Description
For signaling from aircraft to other aircraft, or from aircraft to ground units. Also used as a distress signal when fired from a grounded plane.
Functioning
This signal is constructed with an outer case of aluminum, known as the barrel, which is closed at one end with a metallic closing cap. At the other end, which is permanently closed in manufacture, is a percussion primer. Also around the base is an annular groove which serves to lock the signal in the projector. Inside the barrel is a black powder propelling charge which is held in a recess in the base and in contact with the primer.
Within the barrel is the signal case which is also constructed of aluminum. At the base of the signal case is the exposed end of the fuse train and a gas-check washer. Inside the signal case, at the base, is a wood spacer enclosing the inner end of the fuse train and holding an expelling charge of black powder. Above the wood spacer is a set-back wad of black felt upon which the candle case rests. Directly on top of the candle case are a pair of felt gas check pads, and a parachute of either cloth or paper. This parachute is held around a wood spacer known as the parachute protector. The signal case is closed with a cork closing wad.
The candle case is of paper with the lower end open in the center to expose the ignition charge. Following the ignition charge is a first fire charge, and finally the signal composition itself. Above the signal composition is a fire clay seal which protects the shrouds from being ignited.
See Also
Nothing else to see.
Source(s)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)
TM 9-1904, Ammunition Inspection Guide (1944)
