Showing posts with label 40kg. Show all posts
Showing posts with label 40kg. Show all posts

Monday, 14 November 2016

French Explosive Ordnance - Bombs






French Explosive Ordnance





Bombs




Classes

French bombs may be divided into three classes.  The bombs in each class are named according to their weight, approximately in multiples of 10kg. and there follows a designation intended to differentiate several bombs of the weight.  H.E. service bombs are made of steel-hardened, forged, or drawn steel; welded sheet or cast steel.  The bomb fillings are generally as follows:

Hardened steel bombs ----- M Mn
Steel bombs ----- M Dn
Other bombs ----- D D



Fillings

The following fillings are used in French bombs:

M Mn - Trimonite (U.S.A.)
-70% melinite (picric acid)
-30% mononitionapthalene

M Dn or MFDN
-80% melinite
-20% dinitronapthalene

D D - Shellite (British)
-60% melinite
-40 dinitrophenol

Of these, "M Mn" is the most used filling for cast-steel anti-personnel bombs.  The remainder are normally filled with "M Dn", "D D" being confined to certain types which are now considered obsolete.


Flares

Flares are normally used in reconnaissance of targets or landing grounds.  They may be 10 or 30 kilograms in weight and should be used at altitudes between 1,500 and 5,000 feet.  The star burns for four or five minutes.  The smoke bomb produces, on impact, a cloud of smoke which lasts about a minute and indicates the direction of the wind.


Coloring of Bombs

1. Service Bombs
-H.E. bombs ---- Yellow
-H.E. bombs (old pattern) ---- Grey
-Flares ---- Red
-Incendiary 1kg (old pattern) ---- Blue body/Black tail
-Incendiary (new pattern) ---- Red body/Green tail
-Incendiary 10kg ---- Red body/Green tail
-Smoke ---- Black nose/Green body and tail

2. Miscellaneous Bombs
-Practice bombs ---- Yellow, blue band, or unpainted
-Instructional bombs ---- Grey or black/Blue band
-Ballast bombs ---- Grey or black/White band


Markings on French Bombs

Markings indicating manufacture are stamped on the nose of the bomb, either transversely near the nose fuze pocket or in a direction parallel to the axis of the bomb.

On mild or forged steel bombs they indicate the source of the steel, the establishments which have carried out the tempering and the manufacture, a consecutive number, the lot number, and year of manufacture.  The letter "M" shows that the bomb is of rolled steel.

On bombs of cast steel, markings indicate the foundry, the lot number, the year of manufacture, and the mark of the factory.

The nature of the explosive filling is indicated by letters 0.4 inch in height, stamped on the bomb at 0.4 inch from the nose fuze pocket.

The following markings are painted on the bombs.
In black, initials of the firm which carried out the filling, with the month and year of filling e.g. PCFD-7-22

Source and lot number of the explosive filling e.g. SF-514-20

Nature of filling
Lot number and year of filling e.g 4-22

In red, the inscription "F de Culot" on the same side as the other markings, in the case of bombs fuzed in the tail.  In addition, bombs of  100kg and over carry below all other markings a number indicating the exact weight of the bomb, to the nearest kilogram.





French Navy Bombs

Little information has been found on French Navy bombs.  Only the information in the following chart is available, except for the 125kg light case bomb, which is included in the bomb section.








10kg (P.A.) Anti-Personnel Type I and Type II


 Overall length: 21.5 inches
Body length: Unknown
Body diameter: 3.54 inches
Wall thickness: 0.5 inches
Tail length: 9.3 inches
Tail width: 5.5 inches

Type of filling:
-70% Picric Acid
-30% Mononitronapthalene

Weight of filling: 2.5 pounds
Total weight: 21 pounds

Fuzing: Nose Only
-24/31 Type H, Model 1921 R.S.A.
-24/31 Model 1925 or Model 1928

Color and markings: Overall yellow
Stamped 0.4 in. from nose fuze pocket in letters 0.4 in. in height - nature of filling.


Description: The bomb casings are single-piece steel castings, internally threaded at the nose to accommodate the tapered steel fuze adaptor.  Type II is similar to Type I, with the following exceptions: No struts are fitted to the tail unit, and strengthening is effected by pressing the lateral and longitudinal corrugations in each tail vane.  In Type I, the tail unit is formed of four similar segments riveted together, fitted over the rear of the bomb, and secured by crimping the tail cone into an annular groove out in the bomb body.








10kg (P.) Anti-Personnel Type I and Type II

 Overall length: 21.5 inches
Body length: Unknown
Body diameter: 3.5 inches
Wall thickness: 0.5 inches
Tail length: Unknown
Tail width: Unknown

Fuzing: Nose Only
-24/31 Type H, Model 1921 R.S.A.
-24/31 Model 1925 or Model 1928

Color and markings: Overall yellow
Stamped 0.4 in. from nose fuze pocket in letters 0.5 in. in height - nature of filling.


Description
Type I: The bomb body consists of a converted 90mm artillery shell.  A sheet-metal extension fits over the upper end of the body and is secured to it by crimping within two annular grooves machined in the body.  The tail unit is riveted to the upper half of the extension.

Type II: This bomb is similar to Type I, with the following exceptions: No conical extension is fitted, but a tail cone formed of a single-piece casting is fitted over the upper end of the bomb and is secured to it by crimping within a single annular groove.










50kg (A.) and 50kg (G.A.M.Mn.) G.P. H.E.
  

(A)
 Overall length: 39 inches
Body length: Unknown
Body diameter: 6.15 inches
Wall thickness: 0.69 inches
Tail length: 17 inches
Tail width: 7.85 inches
Type of filling: M.Dn
Weight of filling: 22 pounds
Total weight: 88 pounds

 (G.A.M.Mn)
 Overall length: 46.5 inches
Body length: Unknown
Body diameter: 7.85 inches
Wall thickness: 0.125 inches
Tail length: Unknown
Tail width: Unknown
Type of filling: M.Mn
Weight of filling: 63 pounds
Total weight: 112 pounds

Fuzing:
(A): Nose - Type H Model 1921; Tail: 3B15
(G.A.M.Mn): Tail: M. No.2

Color and markings: Overall yellow
Painted on bomb case - Type of filling and "F de Culot" if tail-fuzed only.


Description:
(A): The body of this bomb is a single-piece steel forging made from a rejected 155mm artillery shell.

(G.A.M.Mn): This bomb is made of sheet steel; it has either a longitudinal or a circumferential weld.








50kg (D.T. No.1, No.2, and No.3) G.P. H.E.

   
(No.1)
 Overall length: 46.5 inches
Body diameter: 8.25 inches
Wall thickness: 0.375 inches
Tail length: Unknown
Tail width: Unknown
Type of filling: M.Dn or D D
Weight of filling: 44 pounds
Total weight: 123 pounds

 (No.2)
Overall length: 46.5 inches
Body diameter: 7.7 inches
Wall thickness: Unknown
Tail length: 21 inches
Tail width: 10.2 inches
Type of filling: M.Dn or D D
Weight of filling: 42 pounds
Total weight: 123 pounds

 (No.3)
Overall length: 46.5 inches
Body diameter: 7.86 inches
Wall thickness: Unknown
Tail length: Unknown
Tail width: Unknown
Type of filling: M.Dn or D D
Weight of filling: 44 pounds
Total weight: 123 pounds

Fuzing:
No.1 and No.3: Tail only - 3B15

No.2: Nose - Type H Model 1921 R.S.A., Model 1925, or Model 1928.
Tail - Sch.R. Model 1938

Color and markings: Overall yellow
Painted on body - Type of filling, source, year of manufacture, etc.


Description: These bombs are single-piece forgings; No.1 made from converted 220mm artillery shells, No.3 from converted hydrogen cylinder; both made obsolete by the French.  The tail consists of four vanes fastened to teh tail cone, strengthened between the vanes by sheet metal struts.







100kg and 200kg G.P. H.E.
  

100kg
 Overall length: 56 inches
Body length: Unknown
Body diameter: 10.8 inches
Wall thickness: 0.44 inches
Tail length: 18.9 inches
Tail width: 10.2 inches
Type of filling: M.Dn or D D
Total weight: 258 pounds

 200kg
Overall length: 62 inches
Body length: Unknown
Body diameter: 14.5 inches
Wall thickness: 0.41 inches
Tail length: 27.25 inches
Tail width: 11.5 inches
Type of filling: M.Dn or D D
Total weight: 503 pounds

Fuzing:
Nose - A modified R.S.A. 30/45 Model 1930
Tail - 3B15 (100kg only) Sch. R. Model 1938

Color and markings: Overall yellow
Painted on body - Type of filling, source, etc. and "F de Culot" if tail-fuzed only.


Description: These bombs have a forged steel case.  The tail assembly consists of four vanes attached to the tail con and reinforced by struts made of strip steel.








500kg (Model 1930, No.1, and No.2) G.P. H.E.
   

Model 1930
 Overall length: 81 inches
Body length: Unknown
Body diameter: 19.3 inches
Wall thickness: 0.56 inches
Tail length: 34.2 inches
Tail width: 27.2 inches
Type of filling: M.Dn or D D
Weight of filling: 600 pounds
Total weight: 1285 pounds

 No.1
Overall length: 83 inches
Body length: Unknown
Body diameter: 21.4 inches
Wall thickness: 0.44 inches
Tail length: Unknown
Tail width: Unknown
Type of filling: M.Dn or D D
Weight of filling: 662 pounds
Total weight: 1182 pounds

No.2
Overall length: 79 inches
Body length: Unknown
Body diameter: 19.6 inches
Wall thickness: 0.625 inches
Tail length: Unknown
Tail width: Unknown
Type of filling: M.Dn or D D
Weight of filling: 595 pounds
Total weight: 1148 pounds

Fuzing:
Nose - A modified R.S.A. Mod. 1930 (except 500kg Model 1930)

Tail - 3B15 Sch. R. 1938 (500kg Model 1930 only)

Color and markings: Overall yellow
Painted on body - Type of filling, source, etc.


Description:
Model 1930: Bomb case is made of a single-piece steel forging.

No.1: This bomb is made of three sheet-steel sections welded together, presumably circumferentially.

No.2: The bomb case is made of a single-piece steel forging.

The tail assembly of these bombs consists of a tail cone with four vanes attached.



  



125kg G.P. H.E. (Naval)
  

 Overall length (w/o fuze): 61.5 inches
Body length: 36 inches
Body diameter: 12.2 inches
Wall thickness: 0.25 inches
Tail length: 26.8 inches
Tail width: 12 inches
Type of filling: TNT
Weight of filling: Unknown
Total weight: 125 kilograms (approx.)

Fuzing:
Nose: Type A
Tail: No.8

Color and markings: Unknown


Description: This bomb is light cased.  The tail assembly is secured to the bomb body by four clamping bolts which are received by four lugs on the body.  The tail unit has corrugate stiffening plates for strengthening.









40kg Fragmentation Bomb
   

 Overall length: 35.75 inches
Body length: Unknown
Body diameter: 6.25 inches
Wall thickness: Unknown
Tail length: 16.75 inches
Tail width: 7.75 inches
Type of filling: Unknown
Weight of filling: Unknown
Total weight: Unknown

Fuzing:
Nose: No.3
Tail: Unknown

Color and markings: Unknown


Description: This bomb is a converted artillery shell.  The tail unit is the cross-blade type, with the blade joined near the end of the bomb by a narrow strengthening band.








1kg Incendiaries Type A and Type B
   

 Type A
Overall length: 14.5 inches
Body length: 9 inches
Wall thickness: 0.35 inches
Tail length: 4.75 inches
Tail width: 2 inches
Type of filling: Thermite
Total weight: 1 kilogram

Type B
Overall length: 14.5 inches
Body length: Unknown
Wall thickness: 0.35 inches
Tail length: Unknown
Tail width: 2 inches
Type of filling: Thermite
Total weight: 1 kilogram

Fuzing:
Nose only - Fuzes for 1kg Incendiaries

Color and markings:
Type A: Blue body and Black tail
Type B: Red or Blue body and Green or Black tail


Description:
The bomb bodies are cylindrical castings of magnesium alloy, with the nose internally threaded to take a nose fuze.  Toward the nose, the bomb casing is perforated by two small vents, plugged with wax.  The bombs differ in tail assemblies, with Type A consisting of three sheet-metal banes supported at the ends by a circular ting and Type B consisting of a cast-alloy tail cone and eight vanes.









10kg (Model 1927) Incendiary
   

Overall length: 22.1 inches
Body length: Unknown
Body diameter: 3.54 inches
Wall thickness: Unknown
Tail length: 10.2 inches
Tail width: 5.5 inches
Type of filling: Thermite
Total weight: 1 kilogram

Fuzing:
Nose only - Fuzes for 1kg Incendiaries

Color and markings:
Type A: Blue body and Black tail
Type B: Red or Blue body and Green or Black tail


Description:
The bomb bodies are cylindrical castings of magnesium alloy, with the nose internally threaded to take a nose fuze.  Toward the nose, the bomb casing is perforated by two small vents, plugged with wax.  The bombs differ in tail assemblies, with Type A consisting of three sheet-metal banes supported at the ends by a circular ting and Type B consisting of a cast-alloy tail cone and eight vanes.









10kg Parachute Flares Old Type (A) and New Type (B)
  
  

 Type A
Overall length: Unknown (Book states Type A 10kg)
Body length: 45.3 inches
Body diameter: 4.4 inches
Wall thickness: Unknown
Tail length: Unknown
Tail width: Unknown
Type of filling: Star Composition
Weight of filling: 8 kilograms
Total weight: 13 kilograms

Fuzing:
Type A: Nose only - Time Fuze V.M.
Type B: Nose only - Time Fuze Model 1930

Color and markings:
Type A: Red overall
Type B: White overall; three grey stars painted near the head of the flare.


Description: These types of flares are very similar.  They come in weights of 10, 15, 30, and 50 kg.  The Type A is the older type and B is the newer.

Type A: The 10kg flare of this type has a body of sheet iron, tin plated.  When the fuze functions, it ignites the powder charge and this, in turn, ignites the flare composition.  At the same time the gas caused by the combustion of the powder creates sufficient pressure to eject the star and parachute through the tail of the flare, the cup of which is lightly attached to the body.

Type B: The newer type of flare is made of aluminum.  The tail cover is attached to the body by a lead strip running around the joint between the body and the tail.  The expulsion of the stars and parachute is accomplished in the same manner as in the Type A.  The head of the flare contains a ballast, as well as the powder charge which ignites and expels the contents of the flare.  The ignition of the large star is caused by the safety fuzes.  When the parachute opens, the six small stars hang around the large star.








Smoke Bomb
   

Overall length: 9.45 inches
Body length: Unknown
Body diameter: 2.75 inches
Tail length: 4.25 inches
Tail width: 3.15 inches
Type of filling: Titanium Tetrachloride
Bottle content: 100 cc

Fuzing: None

Color and markings: Green body and tail, Black nose.


Description: The casing is sheet aluminum, with the head pressed separately and soldered in several places to the body.  A glass container fits within the casing, protected from breakage by cork at the tail, felt washers along the side of the casing, and a collar supported on a helical spring at the nose.  A U-shaped safety pin holds the collar in position.  On release, the safety pin is pulled, freeing the bottle in the case.  On impact, the bottle moves forward against a spring onto four cutters in the nose of the body.




Next Time: French Mines and Traps

Monday, 11 July 2016

Italian Explosive Ordnance - Bombs (Part 4)






Italian Explosive Ordnance






100kg Special Bomb Combination Anti-Personnel Bomb and Bomb Container


Overall length: 53.2 inches
Body length: 29 inches
Body diameter: 10.7 inches
Wall thickness: 0.07 inch
Tail length: 20.8 inches
Tail width: 10.7 inches

Type of filling: TNT
Total weight: 113 kilograms or 82.1 kilograms

Fuzing:
-Nose: Type X
-Tail: Type Z
  
Color and markings: Overall reddish brown; red nose

Description:    This is a composite which comprises: (1) 32 small Spezzine bombs; (2) a central bomb; and (3) a nose charge which acts as an anti-personnel bomb.  If Spezzine bombs are filled with H.E., the bomb is called 100kg Sp. I. in the latter, the 32 small bombs (1-kg I) may be replaced by 16 (2-kg I) bombs.

Nose fuze (Type X) functions at a preset height and causes the conical nose portion, carrying a length of burning safety fuze and an explosive charge enclosed in concrete, to fall away and explode subsequently; small bombs thus released fall independently.  The main body continues its flight, containing the central bomb, which explodes on impact under the action of the tail fuze.

The container part consists of two concentric sheet-steel cylinders, the outer 0.08 inch thick and the inner 0.04 inch thick, held together by four strips and the end plate.  The tail is attached to the outer cylinder by four threaded studs; in the inner cylinder is fitted the central bomb, of the "Mitroglia" type.  The nose protrudes and is attached by a steel adapter and locking-ball device to the central bomb.

Spezzine bombs are packed, with safety pins removed, in eight columns of four; each column has a conical spring to keep it in compression.  Under one spring is a spring-loaded plunger, protruding through the end plate and acting as a safety pin for the Fuze Type Z of the central bomb.
 




15kg Gas Bomb


Overall length: 31 inches
Body length: 20.7 inches
Body diameter: 4.7 inches
Tail length: 13.8 inches
Tail width: 6.3 inches

Type of filling: Diphenyl Chlorarsine
Weight of filling: 3.65 kilograms
Burster used: TNT
Weight of burster: 1.7 kilograms
Total weight: 16 kilograms (approx.)

Fuzing: Tail - Unknown
   
Color and markings: Overall yellow; Geneva cross stenciled on the body
  
Description: The bomb is thick-walled with a steel body and nose cast in one piece, to which a dome-shaped base it attached.  Sheet-metal tail fins are attached to a metal band clamped around the body.

Remarks: This bomb is thought to be the same as the 15kg S.A.P. except for filling.





25kg Gas Bomb (Furretta)


Overall length: 32.7 inches
Body length: 30.1 inches
Body diameter: 6.3 inches
Type of filling: Lachrymator
Weight of filling: 10 kilograms
Total weight: 25 kilograms

Fuzing: Tail - Type K
  
Color and markings: Overall yellow; Geneva cross in red
  
Description:  The bomb has a blunt nose and parallel sides, but no tail or stabilizing fins.  This is a percussion bomb; but it functions as a tear-gas generator.  There is no burster charge, but the casing is pierced with small holes through which the lachrymator is emitted.




40kg Gas Bomb C40P


Overall length: 32.3 inches
Body length: 21.4 inches
Body diameter: 9.9 inches
Tail length: 16.1 inches
Tail width: 9.9 inches

Type of filling: Diphenyl Chlorarsine
Weight of filling: 6.5 kilograms
Weight of burster: 13 kilograms
Total weight: 47 kilograms

Type of filling: Mustard Gas
Weight of filling: 14.7 kilograms
Weight of burster: 0.18 kilograms
Total weight: 40.6 kilograms

Fuzing: Tail only - Unknown
  
Color and markings:
-Diphenyl Chlorarsine: Overall yellow; Geneva cross stenciled in black
-Mustard Gas: Overall yellow; red nose; red stenciled marking (see below)

N 2226
Lorpo KG 359; Tara KG179

 
Description: This bomb is similar to 40kg G.P.-H.E. bomb in size and appearance.  The burster tube contains TNT and is about fifteen inches long.  Other information is lacking.




55kg Gas Bomb and 100kg Gas Bomb (C100P)



55kg
Overall length: 32.3 inches
Body diameter: 9.8 inches
Type of filling: Phosgene
Weight of filling: 20 kilograms
Weight of burster: 18 kilograms
Total weight: 55 kilograms

100kg
Overall length: 50.2 inches
Body length: 32.5 inches
Body diameter: 10.7 inches
Tail length: 20.8 inches
Tail width: 10.7 inches
Type of filling: Diphenyl Chlorarsine
Weight of filling: 14.3 kilograms
Weight of burster: 28.7 kilograms
Total weight: 101.9 kilograms
Fuzing:
-55kg: Unknown
-100kg: Tail only; probably C-1 or Y-1
   
Color and markings:
-55kg: Overall yellow; Geneva cross stenciled in white
-100kg: Overall yellow; Geneva cross stenciled in black


Description: These bombs are similar to same weight G.P.-H.E. bombs.  Little information has been found on them.




250kg and 500kg (500T) Gas Bombs


250kg
Overall length: Unknown
Body length: 57.5 inches
Body diameter: 18 inches
Wall thickness: 0.12 inch
Type of filling: Mustard Gas
Weight of filling: 214 kilograms (approx.)
Total weight: 264 kilograms (approx.) without tail

500kg
Overall length: 96.6 inches
Body length: 54.3 inches
Body diameter: 18 inches
Wall thickness: 0.12 inch
Type of filling: Diphenyl Chlorarsine
Weight of filling: 210 kilograms
Total weight: 298 kilograms

Fuzing:
-250kg: Nose - Unknown
-500kg: Nose - Type T

Color and markings:
-250kg: Overall light blue-grey; yellow nose plug
-500kg: Overall grey; Geneva cross, probably in green, above the lettering S.C.M. 1-37 C-500T

Description: These two bombs are thought to be the same except for the slight differences in length of the body, which could have been measured erratically.  Two different illustrations are shown; one is made from recovered bomb and the other is from Italian drawings.

-250kg: The casing is of thin sheet metal and is of welded construction.  Inside the body casing is a baffle for the chemical filling.  The tail unit was not recovered, but could take the alloy tail unit which is used in the C500T.

-500kg: Very little is known about this bomb, since it was not used in the war.  The bomb is very similar to the 500kg General Purpose, except that is has a baffle plate in the center.





5kg Vento Marker
  

Overall length: 17.4 inches
Body length: 8.9 inches
Body diameter: 5.2 inches
Wall thickness: 0.3 inch
Tail length: 9.2 inches
Tail width: 7 inches

Type of filling: Smoke or Incendiary
Weight of filling: Unknown
Total weight: 5.2kg
Fuzing: Nose fuze - Type S
Description: The body consists of a thin metal cylinder liner and outer concrete bomb body, which is reinforced with sheet pellets and wire.  The body liner has welded to it: (1) the suspension lug socket which is internally threaded to receive the horizontal suspension lug; (2) four metal vane support which have riveted to them four aluminum-alloy vanes; (3) two pairs of diametrically opposite wire guides for the base plug retaining wire; (4) the ends of a helical reinforcing wire, 16 S.W.G., which is coiled in three turns and passes through the holes provided in the vane support; and (5) the upper end of a second helical reinforcing wire, 8 S.W.G., which is coiled in five turns and is welded at its other end to the fuze pocket.

At the upper end, the liner is closed by a cork plug.  This bomb is used in conjunction with chemical bombs.  The purpose is to indicate the force and direction of the wind at ground level.  Two main fillings are used, a smoke filling for use in the daytime, and an incendiary filling for use at night.  The night filling is the 1kg Incendiary Bomb Type II.  Another modification of this bomb has no body liner but is all concrete and is used for practice.







Next Time: Italian Gas Bombs and Others

Monday, 27 June 2016

Italian Explosive Ordnance - Bombs (Part 2)








Italian Explosive Ordnance





  
  



40kg GP H.E. Bomb

 

Overall length: 32.3 inches
Body length: 19.7 inches
Body diameter: 9 inches
Tail length: 16.1 inches
Tail width: 9 inches

Type of filling: TNT
Weight of filling: unknown
Total weight: 40 kilograms

Fuzing: Tail only - Type N-3
  
Color and markings: Overall grey; red nose

Description:  The bomb has a steel body and nose in one piece.  The tail is of sheet-metal construction with a strengthening band at the end.  The tail unit is bolted to four square lugs on the body.
 
Remarks: This bomb is very similar to 40kg gas bomb, except for filling.




50kg GP H.E. Bomb


Overall length: 40.5 inches
Body length: 21.7 inches
Body diameter: 9.9 inches
Wall thickness: 0.25 inch
Tail length: 18.4 inches
Tail width: 9.9 inches

Type of filling: Amatol
Weight of filling: 29.2 kilograms
Total weight: 59.31 kilograms

Fuzing: Tail only - Type C or Y
   
Color and markings: Overall dull blue.
  
Description: The bomb body consists of a base section and a nose section, both steel.  Screwed into the nose is a pointed steel block, pierced to take a suspension link.  The tail is secured to the base plate, which is attached to the casing with one row of screws.  The tail assembly consists of four vanes, tail cone, and corrugated strengthening ring, all sheet metal.  The bomb can also be suspended horizontally.





100kg GP H.E. Bomb


Overall length: 51.3 inches
Body length: 32.5 inches
Body diameter: 10.7 inches
Tail length: 22 inches
Tail width: 10.7 inches

Type of filling: TNT
Weight of filling: 50.6 kilograms
Total weight: 100 kilograms (approx.)

Type of filling: Amatol
Weight of filling: 49.5 kilograms
Total weight: 100 kilograms (approx.)

Fuzing: Tail only - Type C-1 or Y-1
  
Color and markings:
-TNT filled: Overall grey; red nose
-Amatol filled: Overall dull blue; red nose
  
Description:  The bomb body is a drawn-steel tube to which is riveted a cast-steel nose pierced to take a suspension link.  The base plate is attached to casing with two rows of screws.  The tail assembly is sheet metal consisting of four vanes, cone, and corrugated reinforcing ring, all attached to the bomb base.  The bomb can be suspended vertically or horizontally.




250kg GP H.E. Bomb


Overall length: 73.8 inches
Body length: 35.4 inches
Body diameter: 17.6 inches
Tail length: 39.4 inches
Tail width: 17.6 inches

Type of filling: TNT
Weight of filling: 125.7 kilograms
Total weight: 259.1 kilograms

Fuzing:
-Nose: Type A
-Tail: Type O
  
Color and markings: Overall grey; red nose

Description: The bomb casing is a drawn-steel tube with a cast-steel nose riveted to it.  The base plate has a double flange and is attached to the casing with a double row of screws.  A cast-alloy tail is attached to the upper flange of the base plate with screws.  A lug is secured to the body near the center of gravity for horizontal suspension.




500kg and 800kg GP H.E. Bombs


500kg

Overall length: 96.6 inches
Body length: 52 inches
Body diameter: 18 inches
Tail length: 35.7 inches
Tail width: 18 inches
Type of filling: TNT
Weight of filling: 216 kilograms
Total weight: 508 kilograms

800kg

Overall length: 127.8 inches
Body length: 77.1 inches
Body diameter: 18 inches
Tail length: 52.8 inches
Tail width: 18 inches
Type of filling: TNT
Weight of filling: 357 kilograms
Total weight: 821.6 kilograms
Fuzing:
-Nose: Type A
-Tail: Type O
  
Color and markings: Overall grey; red nose

Description: The bombs have a steel body and nose cast in one piece, with double-flanged base plate attached by double rows of screws.  The cast alloy tail is attached to the upper flange.  The 500kg and 800kg vary only in length and weight.
  
Remarks: A 630kg time bomb has been made from the 800kg by reducing the thickness of walls so as to use a greater explosive charge.



1000kg G.P. Bomb
  

Overall length: 140 inches
Body length: 94.5 inches
Body diameter: 20.5 inches
Wall thickness: 0.29 inch
Tail length: 45.5 inches
Tail width: 28 inches

Type of filling: TNT
Weight of filling: Unknown
Total weight: 1000 kilograms (approx.)

Fuzing: Nose fuze only - Unknown

Color and markings: Overall grey; Nose: red

Description: The bomb casing is made up of four pieces welded together: (1) the nose; (2) a cylindrical part; (3) a truncated cone; and (4) the conical part to which the tail fins are attached.  At about 30 inches from the rear, a steel diaphragm is welded inside the casing to contain the main filling before this point.

A steel nose plug carries a steel fuze adapter, and both these have serrated flanges to form seals against rubber packings which are counter-sunk into the relative surfaces on the bomb nose plug, respectively. A steel booster tube, about 1 and 1/4 inches in diameter, runs the length of the bomb; it is inserted from the tail end, where it is screwed into the tail cone, and at the nose end it is located by a sleeve which forms an extension to the fuze adapter.

A plug which is drilled to take the detonator, is screwed into the forward end of the booster tube; there is a felt washer beneath this plug.  An internal plug, which is located by grub screws, seals the booster charge at the rear.  A steel plug closes the booster tube at the tail end.  The booster tube contains penthrite.  Around the booster tube and forming a core to the main filling is a tube, 3 inches in external diameter, with a bore 2 inches in diameter; this is composed of annular rings of compressed TNT about 2 and 1/4 inches long.


Remarks: A glider attachment was used with this bomb.  The controls for the glider contain a gyro unit for azimuth and an airspeed unit to control the dive angle.




500kg GP H.E. Time Bomb
  

Overall length: 93.7 inches
Body length: 50.9 inches
Body diameter: 18.1 inches
Wall thickness: 0.25 inch
Tail length: 43.3 inches
Tail width: 18.1 inches

Type of filling: TNT
Weight of filling: 247 kilograms

Fuzing: Tail - Type N
Color and markings: Overall grey; red nose

Description: Main body and nose are cast in one piece.  In the nose is a centrally-located clockwork fuze and provision for four additional impact fuzes.  If a time fuze is used, impact fuzes can be made inoperative.  The cast aluminum-alloy tail is attached to the bomb by screws.

Remarks: A similar bomb weighing between 800 and 1000 kilograms is thought to have been used by the Italians.







Next Time: Italian Semi-Armor Piercing and Incendiary Bombs