Incendiary Bombs

When the bomb strikes the target, inertia causes the firing pin to move forward striking the primer. The primer ignites the first fire mixture which ignites the filler (1) (0.63-lb of Thermate, TH3) and the Mg alloy body (2) 

The nose end of the bomb is closed by a sheet-steel nose cup which provides a seat for the fuze. The tail end of the bomb is closed by a sheet-steel cup with a well in its center to provide a mounting for the fin assembly. Behind the nose cup is located the dome. It separates the fuze from the filling of PT1 and forms a container for two small bags of Mg/BkPdr mixture. 

About 6 oz of WP (white phosphorus) enclosed in a plastic bag is placed behind the dome and ahead of PT1. When the bomb strikes a target, the fuze functions and sets off 

Mg/BkPdr mixt in the dome. Gases released on burning blow the dome toward the tail end of the bomb. This action rejects PT1, WP, the tail cup and the tail assembly from the bomb. The WP ignites upon exposure to the air and sets fire to PT1. The scattered jelly burns 5 to 10 mins (Ref 51a, pp 2-39 2-40) 

The largest of the incendiary bombs described in Ref 51a is the 100-lb AN-M47A4 Inc Domb (See Fig 2-11). Its preferred fuse is the Nose Fuze AN-M159 (See Fig 4-6), while AN-M126A1 (described in Ref 51a, pp 4-7 to 4-9) is its authorized alternate. 

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Dapalm The aluminium soap of naphthenic and palmitic acids used to gel gasoline. The thickened gasoline has been used for military flame throwers and incendiary bombs. See metallic soaps. 

Metal Incendiaries. Metal incendiaries include those of magnesium in various forms, and powdered or granular aluminum mixed with powdered iron(III) oxide. Magnesium is a soft metal which, when raised to its ignition temperature, bums vigorously in air. It is used in either soHd or powdered form as an incendiary filling, and in alloyed form as the casing for small incendiary bombs. 

Brand-, burn(ing). Are, incendiary, -balsam, tn. ointment for bums, -bombe, /. incendiary bomb, -eisen, n. burnt iron, -erz, n. inflammable ore (as bituminous shale, or as idrialite). 

Stab, m. rod stick bar staff, -bakterie,/. bacillus, -brandbombe, /. stick-type incendiary bomb. 

Thermit-bom be, /. thermite bomb, -brand-bombe, /. thermite incendiary bomb, -fiil-iung, /. thermite filling or charge, -ladung, /. thermite charge, -schweissung,/. thermite weld(ing). -verfahren, n. thermite process. 

Wohnung,/. dwelling, residence, housing. Wohnungs-anzeiger, m. directory, -bombe, /. incendiary bomb. 

Chlorine trifluoride is a toxic, intensely reactive gas. It was used in World War II to make incendiary bombs. It reacts with ammonia and forms nitrogen, chlorine, and hydrogen fluoride gases. When two moles of chlorine trifluoride reacts, 1196 kj of heat is evolved. 

Flares. A flare compn is described in Refs 15 16 contg powd Mg, Na perchlorate, and a binder which can be cast and cured, and which has a luminous intensity of 50,500 candle-secs/g Incendiaries. A mixt of 1 OOg of Na perchlorate and 58.7g of powd Al has a Qr of 2751cal/g and can be used as a filler for incendiary bombs (Ref 6). A proc is described in Ref 14 for coating Na perchlorate with Al, and the use of the coated material in incendiaries Photo flash Compositions. Mixts of 80% Ca metal and 20% Na perchlorate and 80% Ca, 10% Na perchlorate, and 10% Na nitrate have been examined as expl photoflash compns for both sea level and high altitude use (Ref 13) Refs 1) Gmelin, System No 21 (1928), 408 Supp Part 1 (1964), 180 2) H.H. Willard ... 

Vol 7,165). The principal advances in the intervening years have been in the wider use of metals which are known to yield pyrophoric fragments, in the fabrication of incendiary bombs, and in the use of Zr, Ti and mischmetal. Early small arms incendiary mixts are reviewed in Ref 134, Table 5-7. As a pyrotechnic metal,... 

When tetroxide is combined with aluminium and sulphur, it is a compound used in incendiary bombs. 

Crozier, T. H., HMInsp. Expl. Spec. Rept. 237, London, HMSO, 1929 A 20 t quantity of an incendiary bomb mixture of the finely powdered oxide, aluminium and sulfur became accidentally ignited and burned with almost explosive violence. It is similar to thermite mixture. 

Three minutes later, they awoke hearing the loud staccato of a German plane. At 5 20 A.M., the plane dropped a Farben incendiary bomb. This was the beginning of World War II. 

Molotov cocktail—A crude incendiary bomb made of a bottle filled with flammable liquid and fitted with a rag wick. 

Aluminum is a very versatile metal with many uses in today s economy, the most common of which are in construction, in the aviation-space industries, and in the home and automobile industries. Its namral softness is overcome by alloying it with small amounts of copper or magnesium that greatly increase its strength. It is used to make cans for food and drinks, in pyrotechnics, for protective coatings, to resist corrosion, to manufacmre die-cast auto engine blocks and parts, for home cooking utensils and foil, for incendiary bombs, and for all types of alloys with other metals. 

Fuze and Burster Bomb. A combination of fuze and burster, for use in a bomb, such as a liquid-filled incendiary bomb, which may be filled in the field... 

Note An "aimable cluster" consisting of a number of incendiary bombs held in a single container is briefly described in... 

A simpler, in construction than previously described fuzes, is the Impact Nose Fuze M142A1, designed to be installed in the 10-lb Incendiary Bomb M74 (or M74A1), during their manuf and not to be removed in the field. It is described in Ref 51a, pp 4-24 4-25, but not described here because it was replaced in most cases by M197 described below... 

An improved version of the M142A1 fuze is the Impact Nose Fuze MI97. (shown here in Fig 4-5) is used in 10-lb Incendiary Bomb M74A1 (shown here in Fig 2-6). The fuze is the direct-arming, arming-pin type, which functions at any angle of impact. 

Nose Impact Fuze RSA Model 1930 (p 195) Mechanical Impact Nose Fuze Mbis (p 196) Incendiary Bomb Fuzes, Models 1925 and 1930 (p 197)... 

Bomb Burster, AN-M13., designed for use (in conjunction with igniter AN-M9) in incendiary bomb AN-M47A4, consists of a plastic tube 0.45-inches in diam, 36.0-in long, provided at each end with a soft brass cup. It is filled with ca 65 g of TNT and has a Tetryl pellet at each end (Ref 51a, P 5-15)... 

Incendiary bomb fuzes) 720-21 (Flare fuze) 723, Fig 282 (Primer for airport flare) 725, Fig 283 (Built-in fuze for photoflash bomb) 12a) K.S. Warren, "Compilation of Data on the Composition of Foreign Primers and Detonators", PATR 1450(1944)... 

WWI. Incendiary bombs developed at that period were not very effective and comparatively easy to extinguish (Vol 2, p B243-R)... 

A. Stettbacher, 30, 2387 (1936) and Nitrocellulose, 6, 202 (1935) Chemical and mechanical delay igniters. A review, mainly of chemical delay incendiary bombs... 

I. M. Filling. Jellied gasoline filling developed during WWII by Standard Oil Co and used for filling incendiary bombs isobutyl methacrylate polymer 5.0, fatty acids, such as stearic acid,... 

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