American Projectiles and Explosives - Chemical, Incendiary, Smoke - "AN" Series Bombs (Part 2)

American Projectiles and Explosives




Explosive Bombs

"AN" Series





100-pound Incendiary AN-M47 Series


AN-M47A2
Overall length: 48.9 inches
Body length: 39 inches

Body diameter: 8.1 inches
Wall thickness: 0.06 inches
Tail length: 12.9 inches
Tail width: 10.9 inches

Filling: Mustard Gas, White Phosphorus, or Gasoline Gel

Construction: The bomb body is a sheet-steel tube with a longitudinal seam weld.  The nose end is hemispherical.  A base plate at the rear end is welded to the tube.  Several bursters may be used interchangeably.  The burster runs the length of the bomb.  The Burster AN-M12 is a tube containing a 50-50 mixture of black powder and magnesium.  The Burster AN-M13 is a tube containing TNT and tetryl pellets at each end, and is used in conjunction with the Igniter AN-M9 (WP or Na).  The Na igniter will permit use over water.  Four vanes are welded to a truncated cone with box-type interior struts to form the tail.


Suspension: Horizontal suspension is provided by two eyebolts formed by holes in each half of the two suspension bands, the halves then being crimped together to form a complete band.  The bands are secured to the bomb body by tightening the bolts on the underside of the body.  One of the bands can be loosened and slipped to the center of gravity if single suspension is required.

Two clusters are now standardized to provide a single suspension for four to six bombs.  The Cluster Adapter M24 holds six AN-M47's ; and the M22 has a capacity of four AN-M47's.





M47A2 - Gas: Loaded with 68.5 pounds of mustard gas.  Complete round weighs 98 pounds.  Inside of body is coated with oil.  Equipped with Burster M4.


M47A1 - Gas: Differs from the M47A2 only in that the interior is coated with black acid-proof paint instead of oil.


M47A - Chemical: Original design, has wall thickness of only 1/32 inch.  Not use for H filling.


M47A2 - Smoke: Main filling is 100 pounds of white phosphorus, and total weight is 127 pounds.  Burster M4 is authorized for high-altitude bombing; Burster M18 is authorized for low-altitude bombing.  Burster M7 may be substituted for either.


M47A1 - Smoke: Like M47A2 - Smoke, with charge of 103 pounds WP and total weight of 129.5 pounds, and interior coated with black acid-proof paint.


AN-M47A2 - Incendiary: Loaded with 40-pound charge of gelled gasoline, either IM or NP, with total weight of 68.6 pounds.  Burster AN-M13 and Igniter AN-M9 (WP or Na) authorized for this bomb.


M47A1 - Incendiary: Like AN-M47A2, with interior coating of acid-proof paint instead of oil.


AN-M47A3 - Incendiary: Identical to AN-M47A2, except that tail assembly is three inches longer.


AN-M47A4 - Incendiary: On this modification, the suspension lugs are strengthened.










The Navy is procuring, at the present time [Manual Date 1949], Incendiary Bombs M47A2 loaded with PWP.  PWP consists of 75% WP and 25% plasticizer; it is more effective than WP, since it gives longer burning, reduces pillaring effect, and increases the anti-personnel effect.  The increased smoke efficiency is due to the larger particles of controlled size which result from the use of PWP.  The bomb contains 75 pounds of PWP and requires a Burster M20, which contains 3/4-inch-diameter tetryl pellets.








500-pound Incendiary AN-M76

Overall length: 59.2 inches
Body length: 45.3 inches

Body diameter: 14 inches
Wall thickness: 0.3 inches
Tail length: 13.9 inches
Tail width: 14.8 inches

Filling: Oil Gel PT 1

Weight of filling: 180 pounds
Total weight: 475 pounds

Charge/weight ratio: 38%

Construction: The body is of one-piece cast-steel construction, with a base plate welded to the body.  A burster tube 3.5 inches in diameter, 35.75 inches long, running through the center of the bomb, is welded to the nose and to the base plate.  The Adapter Booster M115 screws into the base plate.  The bomb tail is a cast-steel sleeve with four sheet-steel fins and internal box-type struts.  Suspension is accomplished by two suspension lugs welded on the body seven inches on each side of the center of gravity and by a single lug, 180 degrees removed at the center of gravity.


Operation: On impact, the fuzes function and detonate the 1.25-pound tetrytol burster in the burster tube and initiate the nine-pound white phosphorus igniter, which, in turn, ignites the main filling.

The bomb has a dispersal area of about 300 by 600 feet.


Remarks: White phosphorus is present in the igniter, and proper precautions should be taken in disposing of these bombs.  The incendiary mixture, PT 1, consisting essentially of paste of magnesium, gasoline, and a thickener, liberates heat at about four times that given off by the usual incendiary mixture IM.

500-pound Chemical AN-M78

Overall length: 59.25 inches
Body length: 46.7 inches

Body diameter: 14 inches
Wall thickness: 0.3 inches
Tail length: 13.9 inches
Tail width: 18.9 inches
Tail weight: 12.3 pounds


Filling: Hydrocyanic Acid (AC)
Weight of filling: 100 pounds
Total weight: 383 pounds

Charge/weight ratio: 26.1%

or

Filling: Phosgene (CG)
Weight of filling: 205 pounds
Total weight: 488 pounds

Charge/weight ratio: 42%

or

Filling: Cyanogen Chloride (CK)
Weight of filling: 165 pounds
Total weight: 448 pounds

Charge/weight ratio: 36.8%

Construction: In construction, the Chemical Bomb AN-M78 resembles the 500-pound G.P. Bomb AN-M64.  The body is of one-piece cast-steel construction with a Burster M15 well running the entire length of the bomb.  The burster is threaded internally at the nose to receive the nose fuze and at the rear to receive the Adapter Booster M115.  The base plug consists of a special forging welded to the case, containing the Needle Valve M1.  The tail is a standard box-type fin assembly secured to the bomb by a locking nut which threads onto the base plug.  Suspension is by two lugs seven inches on either side of the center of gravity, or by a single suspension lug 180 degrees removed at the center of gravity.

Remarks: The Adapter Booster M117 is used in conjunction with the Nose Fuze M127.  This nose fuze is required for aerial bursts with persistent gas agents.

1,000-pound Chemical AN-M79

Overall length: 69.5 inches

Body length: 53.6 inches

Body diameter: 18.6 inches

Wall thickness: 0.38 inches

Tail length: 18.5 inches

Tail width: 25.4 inches

Tail weight: 21.5 pounds

Filling: Hydrocyanic Acid (AC)

Weight of filling: 185 pounds

Total weight: 707 pounds

Charge/weight ratio: 26%

or

Filling: Phosgene (CG)

Weight of filling: 404 pounds

Total weight: 926 pounds

Charge/weight ratio: 44%

Construction: This chemical bomb resembles the 1,000-pound G.P. Bomb AN-M65, taking the same tail assembly, arming vanes, and fuzes.  The body is of one-piece cast-steel construction and has a steel burster well 2.5 inches in diameter which is placed axially through it and expanded in both the nose and the base plate before welding, thus eliminating any possibility of decomposition of chemical fillers due to the presence of crevices.  The base plate differs from that of the standard G.P. bomb in that it is a special forging welded to the case and containing the Needle Valve M1.  It also has a 1.25-inch filling hole closed by a soft iron gasket, a hard steel gasket plug, and a threaded closing plug.   The Booster M16 is used in the burster well and consists of a waterproof fiber tube filled with 4.45 pounds of tetrytol.  The standard 1,000-pound G.P. tail assembly consists of four fins welded to a sleeve which is held onto the base plate by a locking nut.  Horizontal suspension is accomplished by dual lugs 7 inches on either side of the center of gravity, or by a single lug 180 degrees removed at the center of gravity.

Operation: On impact with the ground, the tetrytol booster breaks the bomb case into a few large pieces without causing the chemical agent to "flash".  The initial cloud formed by the burst of this bomb, when filled with CG, covers an area of 100 yards in diameter within approximately eight to ten seconds.

Remarks: Attempts to disassemble the bomb or any of its components are to be avoided except for the fuzes, which may be removed provided it is necessary to return the bomb to storage.  Release of the filler is dangerous, and should not be undertaken except under exceptional circumstances.  In handling any damaged chemical bombs or in conducting surveillance tests by means of the Needle Valve M1, personnel should be equipped with rubber gloves and a gas mask.  The Adapter Booster M115A1 can be used in place of the M115.

Jettisonable fuel tanks ("fire bombs")

General: The "fire bomb" consists of a jettisonable fuel tank filled with gasoline gel (gasoline-Napalm mixture).  These bombs have been effective against personnel, wooden piers, inflammable stores, etc., with each bomb covering an area approximately 100 feet by 300 feet.

Various types of jettisonable fuel tanks are available for conversion into fire bombs.  A 150-gallon universal or interchangeable tank has been produced.  Stabilizers have been designed to give the fire bomb a more stable flight when dropped form a higher altitude.  The stabilizers are attached to the present tanks by a harness consisting of four cables which run along the longitudinal axis of the tank and are attached to a ring fitted around the nose.  The universal tank has clips welded to the after end, obviating the necessity of the nose ring and cable harness.

Filler: The filler is a gasoline-Napalm mixture.  Napalm consists of a mixture of basic aluminum soaps of fatty acids and napthenic acid, which in itself is inert and is used only to congeal the gasoline to the proper consistency.  Either 100 octane or 80 octane gasoline can be used, with 6% Napalm by weight added for the mixture.  Another powder, Marinco, consisting of 50% magnesium carbonate and 50% calcium carbonate, is added (7% of Napalm by weight) to prevent clogging in the outlet hose.

The Navy has developed the Incendiary Mixers Mk 1 Mod 0 and Mk 1 Mod 1, which mix the gasoline and Napalm in the correct proportions.

Next Time: Practice Bombs - Navy 

American Projectiles and Explosives - Explosive Bombs - "AN" Series (Part 2)

American Projectiles and Explosives



Explosive Bombs

"AN" Series

250-pound G.P. AN-M57 and AN-M57A1

Overall length: 45.4 inches
Body length: 36 inches
Body diameter: 10.9 inches
Wall thickness: 0.27 inches
Tail length: 12.1 inches
Tail width: 14.9 inches
Tail weight: 6 pounds

Filling: 50/50 Amatol
Weight of filling: 123.7 pounds
Total weight: 255.9 pounds
Charge/weight ratio: 48%

or

Filling: TNT
Weight of filling: 129 pounds
Total weight: 260 pounds
Charge/weight ratio: 50%





500-pound G.P. AN-M43 (Obsolescent), AN-M64, and AN-M64A1

Overall length: 56.8 inches
Body length: 45 inches
Body diameter: 14.2 inches
Wall thickness: 0.3 inches
Tail length: 13.9 inches
Tail width: 18.9 inches
Tail weight: 12.3 pounds


Filling: Amatol
Weight of filling: 262 pounds
Total weight: 510 pounds
Charge/weight ratio: 51.2%

or

Filling: TNT
Weight of filling: 267 pounds
Total weight: 525 pounds
Charge/weight ratio: 51%

or

Filling: Composition B
Weight of filling: 274 pounds
Total weight: 535 pounds
Charge/weight ratio: 51%


Remarks: The AN-M43, AN-M64, and AN-M64A1 are identical types except for the adapter booster which is employed in the base plate to receive the tail fuze.





1,000-pound G.P. AN-M44 (Obsolescent), AN-M65, and AN-M65A1

Overall length: 67.1 inches
Body length: 53.1 inches
Body diameter: 18.8 inches
Wall thickness: 0.5 inches
Tail length: 18.5 inches
Tail width: 25.4 inches
Tail weight: 21.5 pounds


AN-M44 (Amatol)
Weight of filling: 530 pounds
Total weight: 964 pounds
Charge/weight ratio: 54.9%

AN-M44 (TNT)
 Weight of filling: 558 pounds
Total weight: 990 pounds
Charge/weight ratio: 56%


AN-M65(Amatol)
Weight of filling: 530 pounds
Total weight: 965 pounds
Charge/weight ratio: 55.8%

AN-M65(TNT)
Weight of filling: 558 pounds
Total weight: 990 pounds
Charge/weight ratio: 56%


AN-M65A1(TNT)
Weight of filling: 558 pounds
Total weight: 990 pounds
Charge/weight ratio: 56%

AN-M65A1(Comp. B)
Weight of filling: 595 pounds
Total weight: 1,040 pounds
Charge/weight ratio: 57%






2,000-pound G.P. AN-M34 (Obsolescent), AN-M66, AN-M66A1, and AN-M66A2

Overall length: 90.4 inches
Body length: 70 inches
Body diameter: 23.3 inches
Wall thickness: 0.5 inches
Tail length: 25.7 inches
Tail width: 31.6 inches
Tail weight: 38.6 pounds


AN-M34 (Amatol)
Weight of filling: 1,063 pounds
Total weight: 2,049 pounds
Charge/weight ratio: 51.9%

AN-M34 (TNT)
 Weight of filling: 1,117 pounds
Total weight: 2,103 pounds
Charge/weight ratio: 53.1%


AN-M66(Amatol)
Weight of filling: 1,063 pounds
Total weight: 2,052 pounds
Charge/weight ratio: 52%

AN-M66(TNT)
Weight of filling: 1,117 pounds
Total weight: 2,106 pounds
Charge/weight ratio: 53%


AN-M66A1(TNT)
Weight of filling: 1,117 pounds
Total weight: 2,106 pounds
Charge/weight ratio: 53%

AN-M65A1(Comp. B)
Weight of filling: 1,142 pounds
Total weight: 2,140 pounds
Charge/weight ratio: 53.3%


Remarks: A heavier nose section distinguishes the AN-M66A2 from the AN-M66A1.





4,000-pound K.C. AN-M56 and AN-M56A1

Overall length: 117.3 inches
Body length: 94.9 inches
Body diameter: 34 inches
Wall thickness: 0.37 inches
Tail length: 28 inches
Tail width: 31.6 inches
Tail weight: 95 pounds


Filling: TNT
Weight of filling: 3,362 pounds
Total weight: 4,205 pounds
Charge/weight ratio: 80%

Filling: Amatol
Weight of filling: 3,245 pounds
Total weight: 4,095 pounds
Charge/weight ratio: 79%

Filling: 50/50 Amatol
Weight of filling: 3,238 pounds
Total weight: 4,232 pounds
Charge/weight ratio: 76.5%


Construction: The body consists of a nose forging, three rolled plate sections, and a forged base plate.  The nose forging is welded to the first plate section, and the three plate sections are welded longitudinally and circumferentially.  the female base plate is threaded to the tail section of the body.  The side walls have a minimum thickness of 0.3 inch and a maximum thickness of 0.5 inch.  Suspension is provided by two lugs welded to the case 30 inches apart (15 inches on either side of the center of gravity).  The normal box-type tail is modified on this bomb by eight additional strut rods to give increased stability for this large bomb.


Filling: The standard filling for this bomb as present is cast TNT, but some bombs in the future will be loaded with Tritonal.  A full length Auxiliary Booster M111 is employed to insure complete detonation.


Remarks: The 4,000-pound L.C. Bomb AN-M56A1 differs in that provision is made for a hoisting lug to be added at the center of gravity between the suspension lugs and also for two other suspension lugs to be screwed into the bomb body, 22.5 degrees removed, for suspension in British planes.

The AN-M56 and AN-M56A1 are not procured by the Navy at the present time.

Any future production will have inert nose and tail surrounds.





S.A.P. 500-pound AN-M58 (Obsolescent), AN-M58A1, and AN-M58A2; 
1,000-pound AN-M59 and AN-M59A1

500 lb
Overall length: 57.8 inches
Body length: 46.8 inches
Body diameter: 11.8 inches
Wall thickness: 0.75 inches
Tail length: 15.05 inches
Tail width: 16.18 inches
Tail weight: 11.4 pounds


1,000 lb
Overall length: 69.3 inches
Body length: 57.3 inches
Body diameter: 15.1 inches
Wall thickness: 1 inch
Tail length: 16.8 inches
Tail width: 20.7 inches
Tail weight: 17 pounds


AN-M58
Filling: TNT
Weight of filling: 160 pounds
Total weight: 472 pounds
Charge/weight ratio: 33.9%

AN-M58A1
Filling: TNT
Weight of filling: 162 pounds
Total weight: 494 pounds
Charge/weight ratio: 33%

AN-M59
Filling: TNT
Weight of filling: 320 pounds
Total weight: 995 pounds
Charge/weight ratio: 32%


Construction: S.A.P. bombs are of single-piece construction, either cast or spun, slightly streamlined in shape, with semi-pointed noses.  The threaded nose opening receives a fuze-seat liner and a steel nose plug, which can be removed, allowing an instantaneous nose fuze to be inserted when fragmentation effect is desired.  Suspension lugs are welded to the case in a manner similar to G.P. bombs; for dive bombing, trunnions on a band may be installed.  The box-type tail is characteristic of that used on G.P. bombs.


Filling: Cast TNT is being used currently, with a wax pad employed in the nose to cushion the explosive against premature detonation on impact with an armored target.  One Auxiliary Booster M104 is used, positioned just before the Adapter Booster M102.  In the future, Army S.A.P. bombs will have, as their main charge, Picratol, the filling now standard for the 2,000-pound S.A.P. Bomb M103.


Markings: Bombs having wax in the nose can be identified by the marking "with pad".


Remarks: In the AN-M58A1, 9.5 pounds of Amatol are removed and replaced by 31.5 pounds of steel to increase the penetration of the bomb.  To enable these S.A.P. bombs to be used with anti-withdrawal fuzes, the AN-M58A2 and the AN-M59A1 incorporate base-plate locking pins and the Adapter Booster M102A1, thus preventing removal of the base plate and adapter booster.  Present production eliminates Auxiliary Booster M104.

Next Time:"AN" Series (Part 3)

American Projectiles and Explosives - Explosive Bombs - Navy "MK" Series (Part 1)

American Projectiles and Explosives



Explosive Bombs

Navy "MK" Series


General

The Navy-designed bombs are generally similar to Army bombs of the same class.  Since the formation of the Army-Navy Standard Board, early in 1941, the Navy has concentrated on designing bombs for naval targets and for carrier handling, leaving the other types of bombs to Army designers.


Color

The Navy formerly used a yellow paint over all; later, grey over all, with a yellow disc painted between the lugs if the bomb is a high-explosive type.  Later productions may be found painted olive drab overall, with yellow bands.

100-pound G.P. Mk 1 Mods 2 and 3, Mk 4 Mods 1-4 (Obsolescent)

Mk 1

Overall length: 48.8 inches
Body length: N/A
Body diameter: 7.9 inches
Wall thickness: N/A
Tail length: 21 inches
Tail width: 9.8 inches
Filling: TNT
Weight of filling: 65 pounds
Total weight: 116 pounds
Charge/weight ratio: 56%

Mk 4

Overall length: 36.2 inches
Body length: 28 inches
Body diameter: 8 inches
Wall thickness: 0.175 inches
Tail length: 9.1 inches
Tail width: 11 inches
Filling: TNT
Weight of filling: 55 pounds
Total weight: 120 pounds (Mod 1) - 195 pounds (Mod 4)
Charge/weight ratio: 45.8% (Mod 1) - 52.8% (Mod 4)

Body construction: Mk 1 has two sheet steel castings welded together, the bomb having a "tear drop" shape.  Mk 4 is a single-piece steel forging; cylindrical, with ogival nose.


Suspension: Mk 1 is horizontally suspended by two lugs welded on the body; it may have single lug or trunnions on the band.  Mk 4 has two lugs welded on the body 14 inches apart; with a single lug welded on the opposite side.


Color and markings: Grey overall with a four-inch yellow disc between the two lugs, indicating H.E.  The color may be yellow overall.


Tail construction: Mk 1 has four vanes which pass down over the body and are welded to a tail cone.  The vanes are fastened to the body of the bomb by screws and are braced by two sets of bar struts riveted to the vanes.  Mk 4 has four vanes welded to a sleeve which is secured to the bomb body with a locking nut.  Box-type internal struts are welded to the vanes.

500-pound G.P. Mk 3 Mod 1, Mk 9, and Mk 12 Mods 0-2 (Obsolescent)

Mk 12 Mod 2

Overall length: 59.5 inches
Body length: 42.6 inches
Body diameter: 14 inches
Wall thickness: 0.36 inches
Tail length: 20 inches
Tail width: 19.4 inches
Filling: TNT
Weight of filling: 256 pounds
Total weight: 504 pounds
Charge/weight ratio: 50%

Body construction: One-piece steel, forged or drawn; cylindrical, with ogival nose.


Suspension: Horizontal suspension by two lugs or trunnions on band for dive bombing.


Color and markings: Grey overall with yellow disc between lugs, indicating H.E.


Tail construction: Four sheet metal vanes are welded to a cone which is attached to the body by a nut which surrounds the fuze.  Box-type struts are used.


Remarks: The 500-pound G.P. Bomb Mk 12 Mod 2 is still to be found in the field, but is no longer being manufactured.  The other Marks are obsolete.  The Mk 12 and Mk 12 Mod 1 differ from the Mk 12 Mod 2 as follows: Trunnions are welded to the body.  They also have two hoisting lugs welded to the body, a female base plate, and a right-angle fin sleeve instead of the conical type.

1,000-pound G.P. Mk 3, Mk 5, Mk 9, and Mk 13 Mods 0-2 (Obsolescent)

Mk 13 Mod 2

Overall length: 72.6 inches
Body length: 53 inches
Body diameter: 17.7 inches
Wall thickness: 0.45 inches
Tail length: 22.3 inches
Tail width: 23.5 inches
Filling: TNT
Weight of filling: 511 pounds
Total weight: 1,005 pounds
Charge/weight ratio: 51%

Body construction: One-piece drawn or forged steel; cylindrical with ogival nose.


Suspension: The bomb is suspended horizontally by two suspension lugs, or by trunnions on the band around the body for dive bombing.  A torpedo sling guide key is welded to the bomb for suspension in torpedo slings.


Color and markings: The bomb is painted grey overall, with an 11-inch yellow disc between the suspension lugs to indicate H.E.


Tail construction: Four vanes welded to the tail cone, which is secured to the body by a locking nut which screws onto the threaded collar of the base plate.


Remarks: Though this bomb may be found in the field, it is no longer being manufactured.

The Bombs Mk 3, Mk 5, and Mk 9 are declared obsolete and will be expended in practice.

The Mk 13 and Mk 13 Mod 1, also declared obsolete, differ from the Mk 13 Mod 2 as follows: Trunnions are welded to body.  There are two hoisting lugs welded to the body, in addition to a single hoisting lug between the suspension lugs.  They have a female base plate instead of the conical type.

1,000-pound G.P. Mk 36

Overall length: 71.2 inches
Body diameter: 18.7 inches
Filling: TNT
Weight of filling: 558 pounds
Total weight: 1,012 pounds
Charge/weight ratio: 55%

General: The 1,000-pound Bomb Mk 36, is a modified version of the 1,000 pound G.P. Bomb, AN-M44.  These modifications provide for the use of Nose Fuzes AN-Mk 219 or Mk 221, the use of Tail Fuzes Mk 223 or Hydrostatic Mk 229 Mod 3, a Navy-type hoisting lug and guide key, trunnions for dive bombing, and an explosive filling of TNT, rather than 50-50 Amatol.


Description: This bomb has two suspension lugs, spaced 14 inches apart, welded to the bomb body for suspension from double-hook racks and shackles.  A guide key is provided on the opposite side of the bomb for sling suspension.


Remarks: The G.P. Bomb Mk 36 was designed primarily by the Navy as an alternate for the 1,000-pound G.P. Bomb Mk 13 Mod 2.

7-inch 100-pound Depth Bomb Mk 52

Overall length: 45.9 inches

Body length: 7 inches
(Note: I believe this should be Diameter, not Length)

TNT
Weight of filling: 45.3 pounds
Total weight: 99.1 pounds
Charge/Weight ratio: 46%

Torpex
Weight of filling: 50.3 pounds
Total weight: 104.1 pounds
Charge/Weight ratio: 49%

General: This is a light-case, fast sinking, round-nose bomb for use by airships.  It is carried in a Bomb Rack Mk 53 and, accordingly, has no trunnions, trunnion bands, or suspension lugs.  A cylindrical shroud is fastened to the tail section by four vanes.  The entire tail assembly is fastened to the rear of the bomb body by six flat-head machine screws.  A cast-iron nose, into which is fitted a booster can, is secured to the bomb body.  The bomb is filled with either TNT or Torpex.  The Nose Fuze Mk 140 will normally function on impact with a solid object below the surface of the water, but will also function upon striking the surface of the water at any velocity greater than approximately 300 feet per second.  This velocity may be attained in a free fall from a vertical height of 1,400 feet.

650-pound Depth Mk 29 (Obsolete) and Mk 37 (Obsolete)

Mk 29

Overall length: 70 inches
Body length: 41 inches
Body diameter: 17.7 inches
Wall thickness: 0.12 inches
Tail length: 36 inches
Tail width: 17.7 inches
Filling: TNT
Weight of filling: 464 pounds
Total weight: 657 pounds
Charge/weight ratio: 70%

Mk 37

Overall length:63 inches
Body length: 41 inches
Body diameter: 17.7 inches
Wall thickness: 0.12 inches
Tail length: 29 inches
Tail width: 17.7 inches
Filling: TNT
Weight of filling: 464 pounds
Total weight: 659 pounds
Charge/weight ratio: 70%



Body construction: These bombs are manufactured with a hemispherical nose reinforced with a steel disc.  The suspension lugs are reinforced with a steel strip.  A flat-nose attachment, in the shape of a bucket and fitting down under the nose of the bomb, can be used to improved underwater trajectory.  The vacant spaces are then filled with plaster of paris.  These attachments increase the weight by 72 pounds.


Suspension: Horizontal suspension is provided by the usual two suspension lugs, with threaded holes on each side 90 degrees removed to receive trunnion lugs for the displacement gear of dive bombers.


Color and markings: The bombs are painted olive drab or grey overall, with an 11-inch yellow disc between the two suspension lugs.  They may be light grey overall.


Tail construction: Four sheet-steel vanes are welded to the tail cone, which is secured to the body by a locking nut screwing onto the rear of the body.  An annular strut is used around the rear of the vanes.  The tail of the Mk 37 was shortened by seven inches so that the Tail Fuze Mk 229 could arm more readily.  Otherwise, the tail is similar to that of the Mk 29.


Remarks: AN-Mk 219 will not arm under 2,500 feet of altitude if the flat-nose attachment is used.

AN-M103 or AN-M103A1 will not arm with the flat-nose attachment, unless special arming vanes are used.

An extender is supplied with each bomb to permit installation of the Hydrostatic Fuze AN-Mk 224 or AN-Mk 234 in the longer athwartships tube.

The Mk 29 is converted to the Mk 37 by replacing the tail.

Because of numerous instances in water crash landings where depth bombs fuzed with the Athwartships Fuze AN-Mk224 or AN-Mk 234 exploded, these two fuzes have been suspended from use.  As a consequence, the Depth Bombs Mk 29 and Mk 37 may be used only if a nose impact fuze is installed.

Next Time: Navy "MK" Series (Part 2)

British Explosive Ordnance - Cluster Projectiles Part 2

British Explosive Ordnance

Cluster Projectile 500lb No.14 Mk I (Service)

Contents: One hundred and six 4lb incendiary bombs
Overall length: 67 inches
Body diameter: 14 inches
Tail length: 21 inches
Tail diameter: 14 inches
Total weight: 450 pounds

Fuzing: Nose Fuze No.42 Mk IV
Tail No.: No.42 Mk I
  

Color and markings: Dull red overall, one of the tensioning straps painted bright red

  

Description: The cluster comprises two fagots of 53 bombs each.  The bombs in the two fagots are arranged nose-to-tail, and with their safety plungers inwards so that hey are all depressed.  The bombs are held in place by a front end plate and a rear end plate, a top beam and a bottom beam, four wooden slats, tensioning straps, and a retaining bar having lateral pins which engage tabs on the tensioning straps.  A shear wire passes through a bridge and the retaining bar at a position near the rear end plate.  A channel, secured to the rear end plate, supports a fuze adapter, the outer end of which is closed by a transit plug fitted with a leather washer.  Inside the adapter is a piston through which a pin is arranged to engage the lower end of a pivoted lever.  The fuze adapter and the piston are slotted to receive the lever.  The upper end of the lever is forked and is connected to the retaining bar.  The rear end plate has two dowels for locating the tail in position, and a nut welded to the center of the rear end plate to receive one end of a tail tie rod when the tail unit is fitted to the cluster.  A nose cover is fitted to the front end plate to decrease the drag of the cluster.
 

Tail Construction: The Tail Unit No.42 Mk I is a shortened drum-type tail, having a tail cone to which a tail ring is secured by fins.  At the base of the tail cone are two holes to fit over the dowels on the rear end plate of the cluster.  The tail unit is fitted with a bearing for an arming spindle, so that, if it should ever be required to fuze the cluster with an air armed fuze, a suitable arming spindle with an arming vane could be readily fitted.  Also, to provide against this contingency, a bracket to receive a safety wire is welded to the tail cone and a hole passes through a projection on the support for the arming-spindle bearings.  A tie rod passes through the center of the tail, and one end of the rod is screw threaded to go into the central nut of the rear end plate.  Two windows, one of which is open, are provided in the tail cone.  The open window is provided so that when the cluster is prepared for use, the fuzing link, connected to the pull percussion mechanism of the Fuze No.42 Mk IV, can be passed through it and connected to the fuzing unit of the bomb carrier.


Functioning: When a cluster is released from an aircraft, the fuze functions, and after a period of delay during which the cluster projectile falls freely, the fuze magazine charge is fired.  The products of combustion of the magazine charge force the piston in the fuze adapter against the lower end of the pivoted lever, which is thus rocked about its pivot and exerts a pull on the retaining bar to break its shear wire, and to move so that the pins on the bar disengage the tabs on the tensioning straps.  The straps then fly outwards and the cluster disintegrates, the component parts failing away separately.  The individual 4lb bombs function on impact.


Suspension: A British type suspension lug is fitted to the top beam, and tapped holes in the beam are provided for fitting American type lugs.

 

Cluster Projectile 750lb No.15 Mk I (Service)
   

Contents: One hundred and fifty eight 4lb incendiary bombs
Overall length: 67 inches
Body diameter: 17.3 inches
Tail length: 21 inches
Tail diameter: 17.8 inches
Total weight: 668 pounds

Fuzing: Nose Fuze No. 42 Mk IV
Tail No.: No.42 Mk I

  

Color and markings: Dull red overall, one tensioning strap painted bright red

  

Description: This cluster comprises two fagots of 79 bombs each.  The bombs in each fagot are arranged nose-to-tail with their safety plungers inwards so that they are all depressed.  The bombs are held in place by a front end plate and a rear end plate, a top beam and a bottom beam, four wooden slats, tensioning straps, and a retaining bar having lateral pins which engage tabs in the tensioning straps.  A shear wire passes through a bridge and the retaining bar at a position near the end plate.  A channel secured to the rear end plate supports a fuze adapter, the outer end of which is closed by a transit plug fitted with a leather washer.  Inside the adapter is a piston through which is a pin arranged to engage the lower end of a pivoted lever.  The fuze adapter and the piston are slotted to receive the level.  The upper end of the lever is forked and is connected to the retaining bar.  The rear end plate has two dowels for locating the tail in position, and a nut welded to the center of the rear end plate to receive one end of a tail tie rod when the tail unit is fitted to the cluster.  A nose cover is fitted to the front end plate to decrease the drag of the cluster.


Tail Construction: The Tail Unit No.42 Mk I is a shortened drum-type tail, having a tail cone to which a tail strut is secured by fins.  At the base of the tail cone are two holes designed to fit over the dowels on the rear end plate of the cluster.  The tail unit is fitted with a bearing for an arming spindle so that, if it should ever be required to fuze the cluster with an air armed fuze, a suitable arming spindle with an arming vane could be readily fitted.  Two windows, one of which is open, are provided in the tail cone.  The open window is provided so that, when the cluster is prepared for use, the fuzing link connected to the pull-percussion mechanism of the Fuze No.42 Mk IV can be passes through it and be connected to the fuzing unit of the bomb carrier.


Functioning: When a fuzed cluster projectile is released, the fuze functions, and, after a delay during which the cluster projectile falls freely, the fuze magazine charge is fired.  The products of combustion of the magazine charge force the piston in the fuze adapter against the lower end of the pivoted lever, which is thus rocked about its pivot and exerts a pull on the retaining bar of the cluster.  This causes the retaining bar to break its shear wire and to be moved so that the pins on the bar disengage the taps on the tensioning straps.  The straps then fly outwards and the cluster disintegrates, the component parts falling away separately.  The individual 4lb bombs function on impact.


Suspension: A British type suspension lug is fitted to the top beam, and tapped holes in the beam are provided for fitting American type lugs.

Cluster Projectiles 1,000lb No.16 Mk II (Service)
  

Contents: Two hundred and thirty five 4lb incendiary bombs
Overall length: 73.5 inches (approx.)
Body diameter: 18 inches (approx.)
Total weight: 935 pounds 

Fuzing: Nose Fuze No. 42 Mk IV
Tail No.: No.48 Mks II and III

  

Color and markings: Dull red overall, one tensioning strap painted bright red

  

Description: This cluster consists of three fagots of 4lb incendiary bombs.  The bombs in each fagot are arranged nose-to-tail with their safety plungers inwards so that they are all depressed.  The bombs are held in place by a front end plate, a rear end plate, a top and bottom beam, four wooden slats, tensioning straps, and a retaining bar.  The retaining bar has a series of lateral pins which engage tabs on the tensioning straps.  A shear wire passes through a bridge and the retaining bar at a position near the front end plate.  A channel secured to the rear end plate supports a fuze adapter, the outer end of which is closed by a transit plug fitted with a leather washer.  Inside the adapter is a piston, through which a pin is passed, arranged to engage the lower end of a pivoted lever.  The fuze adapter and the piston are slotted to receive the level.  The upper end of the lever is forked and is connected to the retaining bar.  A nose cover is fitted to the front end plate to decrease the drag of the cluster.  The tail unit is attached to a spring-loaded rod extending through the center of the cluster.  the tail is held compressed against the spring by an arming wire arrangement.


Tail Construction: The Tail No.48 Mk II and III is of the telescopic type and is supplied fitted to the cluster in the closed position.  It consists of five fairings, forming a shortened cone, carried by the rear end plate of the cluster, and a strut mounted on supports, carried by an inner tube which slides in an intermediate tube.  The intermediate tube extends through the whole length of the outer tube, which is secured to the end plate of the cluster.  The intermediate tube replaces the central bomb of the middle and tail-end fagot of the cluster.

A spring is housed in the inner tube, with one end bearing against a stop in the tube and the other end bearing against a cap which closes the inner end of the intermediate tube.  The spring, which is under compression, tends to slide the inner tube out of the intermediate tube to extend the tail.  This movement is limited by a ferrule on the inner tube, which engages a ferrule in the intermediate tube when the tail is fully extended.

The inner and intermediate tubes have holes provided in them, which register when the tail is closed.  A safety wire is threaded through the holes to retain the tail in its closed position against the action of the spring.  A 4-ft fuzing lanyard is attached to the eye of the safety wire by a shackle, and a similar shackle is provided at the free end of the lanyard.


Functioning: When a fuzed cluster projectile is released from the plane, the arming wire is withdrawn, starting the delay of the fuze and releasing the tail unit, which then springs out on its rod to the fully extended position.  When the fuze functions, the fuze magazine charge is fired and the pressure of the gases forces the piston in the fuze adapter against the lower end of the pivoted lever.  The lever is thus rocked about on its pivot and exerts a pull on the retaining bar of the cluster.  This causes the retaining bar to break its shear wire and to be moved so that the pins on the bar disengage themselves from the tabs of the tensioning straps.  The straps then fly outward, and the cluster disintegrates, scattering the bombs, which fall away separately.  The individual incendiary bombs function on impact.


Suspension: A British type suspension lug is fitted to the top beam, and tapped holes in the beam are provided for fitting American type lugs.


Remarks: The fagot at the nose end of the cluster contains 79 bombs.  The central and tail fagot contains 78 bombs each, the central bomb of each of these fagots being removed to allow insertion of the outer tube, which accommodates the stem of the tail and is secured to the rear end plate of the cluster.

 

Cluster Projectile 500lb No.17 Mk II (Service)

Contents: Twenty six 20lb fragmentation bombs, specially designed for use in this cluster
Overall length: 63 inches (with blunt nose)
Width across flats: 15 inches (octagonal in shape)
Tail length: 27 inches
Total diameter: 17.5 inches
Total weight: 582 pounds 

Fuzing: Tail Fuze No.885 Mk I
Tail No.: No.63 Mks I and II

  

Color and markings: Dark green overall

  

Description: The cluster comprises twenty-six 20lb fragmentation bombs arranged in two fagots of thirteen bombs each.  The bombs are held in place by a front end palte and a rear end plate, a top beam and a bottom beam, side plates, which overlap each other, and tensioning straps and a retaining bar, which hold the components together.  The bombs are completely enclosed.  Lateral pins on the retaining bar engage tabs forming part of shoes attached to the ends of the tensioning straps.  A shear wire passes through the retaining bar and a bridge on the top beam.  A channel secured to the rear end plate supports a fuze adapter, the outer end of which is closed by a transit plug and leather washer.  Inside the adapter is a piston through which is a pin to engage the lower end of a pivoted lever.  The fuze adapter and piston are slotted to receive the lower end of the lever.  The lever passes into the fuze adapter.  Links connect the upper end of the lever to a downwardly projecting plate, welded to the retaining bar.  The rear end plate has two dowels for locating the tail in position, and a nut welded to the center of the plate to receive one end of a tail tie rod, when the tail unit is fitted to the cluster.  The front end plate has two dowels for locating either a blunt nose fairing or a streamlined nose fairing in position, and a nut welded to the center of the plate to receive the securing stud of the blunt nose fairing, or the tie rod of the streamlined fairing.  The blunt nose fairing is fitted to the cluster if it is to be carried internally in an aircraft.  The streamlined nose fairing consists of a hollow metal dome, the base of which is partly covered by an end plate welded to the dome, and is to be fitted to the cluster when carried externally on an aircraft.


Tail Construction: The Tail Unit No.63 Mk I consists of a tail cone, having an approximately octagonal base and a tail strut secured to the cone by six supports.  The tail unit has an arming spindle mounted in bearings, and has a fork at its inner end and an arming vane at its outer end.  Two inspection windows in the tail cone are provided to enable the armorer to watch the fork of the arming spindle, when fitting the tail unit to a cluster fuzed with a Tail Fuze No.855.  The Tail No.63 Mk I is only used when the cluster is carried internally in an aircraft.  The Tail No.63 Mk II is similar to the Mk I, except that it is generally strengthened and has seven tail drum supports as compared with the six of the Tail No.63 Mk I, and is to be used when the cluster is carried externally on the aircraft.


Functioning: When the fuzed cluster projectile is released, the fuze functions, and, after a period of delay during which the cluster falls freely, the fuze magazine is fired.  The products of combustion of the magazine charge force the piston in the fuze adapter against the lower end of the pivoted lever, which is thus rocked about its pivot and exerts a pull on the retaining bar of the cluster.  The pull breaks the shear wire passing through the retaining bar and moves the bar so that its pins disengage the tabs on the tensioning straps.  The straps then fly outwards and the cluster disintegrates.  Its component parts fall away separately and the individual bombs descend, supported by their parachute, to function in the normal manner.


Suspension: A British type suspension lug is fitted to the top beam, and tapped holes in the top beam are provided for fitting American type lugs.

Cluster Projectile 350lb No.23 Mk I, and 500lb No.24 Mk I (Service)

  
350lb No.23 Mk I

Contents: Fourteen modified US 20lb fragmentation bombs
Overall length: 62.25 inches
Body diameter: 11.1 inches
Tail length: 27.5 inches
Tail diameter: 12.6 inches
Total weight: 335 pounds 

Fuzing: Tail Fuze No.885 Mk I
Tail No.: No.65 Mk I

500lb No.24 Mk I

Contents: Twenty modified US 20lb fragmentation bombs
Overall length (blunt nose): 62.25 inches
Overall length (streamlined nose): 71.75 inches
Body diameter: 14.5 inches
Tail length: 30.5 inches
Tail diameter: 18 inches
Total weight: 467 pounds 

Fuzing: Tail Fuze No.885 Mk I
Tail No.: No.66 Mk I

  

Color and markings: Dark green overall, one tensioning strap painted red.

  

Description: These clusters are identical in construction, and function in a similar manner.  The Cluster No.23 Mk I, however, is approximately hexagonal in cross-section, while the No.24 Mk I is roughly octagonal.


The bombs forming the cluster are retained in two fagots of 7 bombs each in the No.23 and 10 bombs each in the No.24 by means of top and bottom beams, front and rear end plates, side fairing, and four tensioning straps.  The tensioning straps are held in position by lateral pegs on the release rod, which is carried on the top beam.  The release rod is connected to a lever and piston mechanism, the cylinder of which also forms an adapter for the barometric fuze and is located on the rear end plate.  Before the fuze is fitted, the adapter is closed by a washered plug.

The cluster is converted into an amiable cluster by the addition of a blunt nose fairing and a drum-type tail.  A special streamlined nose fairing is designed only for the Cluster No.24 Mk I, when it is to be stowed externally on the aircraft.

Tail Construction: The Tail Unit No.66 Mk I of the Cluster No.24 consists of a tail cone having an approximately octagonal base to which a circular strut is attached by seven tail fins.  The cone is fitted with the conventional arming assembly consisting of arming vanes, arming spindle, and an arming fork.  The tail is fastened to the cluster by a tie rod, and has two dowel holes in its base to position it.  The cone is fitted with two inspection windows.

The Tail Unit No.65 Mk I is similar to the No.66 Mk I except that it has a hexagonal base, and only six tail pins.


Functioning: On release from the aircraft, the cluster falls until the fuze functions.  The explosion in the magazine forces the piston forward in its housing and causes a rocking movement of the pivoted lever.  The sudden movement of the lever exerts a pull on the retaining bar and breaks the shear wire, disengaging the lateral pins from the tabs of the tensioning straps.  The straps are thus released and fly outwards, releasing the bombs.


Suspension: A British type suspension lug is fitted to the top beam, and two crutching pads bolted to the beam are used when a British type bomb carrier is fitted to the cluster.  Two sets of four tapped holes are provided in the top beam for the attachment of American type suspension lugs.  Two of the four holes at the nose end of the beam normally house the bolts securing one of the crutching pads to the beam.  If American type lugs are fitted, the British type lug and crutching pads must first be removed.

Nose Ejection Clusters

  

General Information: Experts have long strived to obtain a better type of cluster projectile, because of the inherent problems of aiming accuracy, dispersion of contents, weight factor, etc., presented by this type of ordnance.  The British believe that the solution to the search lies in the use of the Nose Ejection type cluster described herein, or its successor as modified by further research.

Nose ejection clusters were put into production near the end of World War II.  The information presented here is a generalized summary of nose ejection clusters, due to the fact that many of the individual clusters of this type are still in the developmental stage. 

  

General Requirements: The fundamental requirement of any cluster is to provide a means of placing cluster contents effectively on the target, the effectiveness being regarded broadly as a function of the angle and velocity of strike, functioning of fuzes or strikers, density of pattern, and accuracy of aim.  Complementary requirements of equal importance are that the cluster shall provide an economical aircraft bomb load, that its preparation for use shall be simple and speedy, that it will withstand road, rail, and ship transport without endangering its safety or usefulness, and that it will meet the strength requirements specified for carriage of bombs in British and American aircraft.

The type of nose ejection cluster now being developed and in production goes far towards meeting these requirements in a simple and direct manner.  It is not possible to generalize on the stability of nose ejection clusters as a group, since this depends on weight and dimensional characteristics, which are mainly due to the type of cluster contents carried.  Ballistic stability resulting in an aiming error of between 2 and 6 mils is being obtained, and will be improved upon as the development of folding and telescopic tails progresses.

The effectiveness of cluster contents from nose ejection clusters is largely fortuitous.  It appears to depend mainly on the inherent stability of the cluster contents and the parent cluster, although the velocity and height of disintegration of the cluster has some bearing.  Control of cluster velocity at disintegration is a problem now being explored.  Earlier investigation showed that decreased velocity at disintegration is invariably accompanied by a closing in of the scatter pattern, and much work on the control of the scatter pattern remains to be done.

Increasing the size of scatter patterns by means of attachments to the cluster contents and asymmetric parasheets is being investigated, but the results so far obtained, though promising, do not justify immediate embodiment.
 


Body Construction: The cluster body consists of a cylindrical steel shell made from 10- or 12-gauge steel plate, and is closed at the rear end by a steel plate of similar gauge, which is welded in position.  Two fuze pockets, which are deep enough to accommodate the burster ejectors, are attached to the end plate, which also embodies a centrally tapped hole for attaching the cluster tail.  A test plug, by which air pressure is applied at the filling factory to check that the rubber sealing joints in the nose are properly tight, is also provided in this plate.  The end plate is shaped to form a shallow truncated cone, the sloping surface of which locates the tail centrally on the cluster body.  The nose end of the cluster is closed by an iron casting secured in place by a number of screws.  On the inside of the casting is an internal steel squash plate secured by a central screw.  Its purpose is to compress the rubber sealing ring against the internal surface of the cluster body to exclude air.  A knife is attached at the front end of the cluster for the purpose of cutting the steel straps as the fagot of cluster contents is ejected.  A pressure plate is assembled in the cluster behind the fagot of cluster contents.  Suspension lugs for British and American type bomb stowage are permanently attached to the cluster body.

The cluster is designed, manufactured, and tested to withstand the climatic conditions experienced in the Far East.  After assembly at the filling factory, the rubber sealing joints in the nose and under the knife fixing screws are tested for tightness by an air-pressure test.


Tail Construction: Two types of cluster tail are in use, the conventional type with a tail cone and cylindrical strut, and one having collapsible fins, which is used where the space available is too small to permit the use of a norm-type tail.  Twin arming mechanisms are locked by means of fuzing wires engaging holes in the arming vanes.  Windows are provided through which the fuze can be observed as the tail is assembled to the cluster.  The tail is located on the tapered end plate of the cluster body, and is secured by a single central bolt.  It is designed, manufactured, and boxed for use in tropical climates.


Transit Bases: To prevent the cluster from sustaining damage affecting the safety of its contents, or destroying the hermetic seal in the nose, each cluster is fitted with transit bases which are intended to remain in position until the cluster is prepared for use.

The transit bases consist of two light-gauge steel rings filled with a material designed to withstand shock loads resulting from rough handling, and also to distribute the load over a large area of the cluster and so prevent damage to the nose seal, which would inevitably result from a blow concentrated at any one point on the nose cover.  The material used in the Mk I design is a resin-bonded sawdust, which is light in weight and resistant to tropical climatic conditions, fungi and insect growth, etc.  The bases are fitted one at each end of the cluster, and secured by tie rods, which embody a quick release device designed to enable the bases to be removed in a minimum of time.


Fuzing: One fuze and burster only are necessary to disintegrate the cluster, but two of each are used as an insurance against complete failure.  Clusters containing 4lb I.B.'s are fuzed with two Tail Fuzes No.42 Mk IV, while all others use two Barometric Tail Fuzes No.886.


Burster Ejectors: Ejection of the cluster contents in effected by a burster ejector, which is ignited by the cluster fuze.  The bursters are placed in the cluster at the time of fuzing.  There are two types of burster, the No.6 Mk I containing 70 grams of G.20 powder for large clusters and the No.7 Mk I containing 50 grams of G.20 powder for the smaller clusters.  The powder is contained in a plastic cylinder manufactured from a polyvinal chloride.  This material is fully resistant to tropical conditions and does not affect the gunpowder.  The cylinders are provided with two small extrusions by which they can be removed from the cluster if required.

For transport and storage the bursters are packed two or four (according to suze) in a sealed metal cylinder, 18 of which are packed in one wooden box.  The metal cylinders are opened by means of a tear-off metal strip.


Contents: The cluster contents are assembled in two or more banks of bombs, with light-gauge steel end plates and longitudinal steel struts, to form a fagot, which is firmly secured by a number of circumferential steel straps.  When properly assembled to a fagot, the cluster contents are safe and the fuzes cannot arm accidentally.  Damage to components of the cluster contents by the force of the ejector charge is prevented by the steel struts, which transmit the force of the explosion from the pressure plate directly to the nose cover, and not through the bombs themselves.


Functioning: On release from the aircraft, the fuzing lanyards are withdrawn from the fuzes and from the air arming vanes.  When a folding tail is used, the lanyard is also withdrawn from the retaining device to allow the tail to assume an expanded position.  At a predetermined height the fuzes operate and ignite the burster.  The expanding gases from the burster drive the fagot of contents forward.  As the fagot passes the cutting edge of the knife, the steel straps binding the cluster are severed, and the screws holding the cluster noose in place are broken.  The contents are then fully ejected.


Developmental Priority: The following is a list of nose ejection clusters in order of their development priority.  The first six items were cleared for production on 7 July, 1945.

Cluster N.E., ANM 69 I.B., 500lb. Mks I & II
Cluster N.E., 18-lb Mg. I.B., 800lb. Mk I
Cluster N.E., J 20-lb I.B., 800lb. Mk I
Cluster N.E., ANM 40 H.E., 600lb. Mk I
Cluster N.E., ANM 40 H.E., 350lb. Mk I
Cluster N.E., F. 8-lb H.E., 550lb. Mk I
Cluster N.E., F. 8-lb H.E., 350lb. Mk I
Cluster N.E., F. 8-lb H.E., 1,000lb. Mk I
Cluster N.E., ANM 69 I.B., 550lb. Mk III
Cluster N.E., 4-lb I.B., 800lb. Mk I
Cluster N.E., J. 30-lb I.B., 500lb. Mk I
Cluster N.E., 4-lb I.B., 500lb. Mk I
Cluster N.E., 4-lb I.B., 950lb. Mk I
Cluster N.E., ANM 69 I.B., 1,000lb. Mk I
Cluster N.E., 3-lb I.B., 1,000lb. Mk I

Next Time: High Explosive Rockets Part 1