Section 8 - Smoke Streamer Bombs: T29AN-M46
U.S. EXPLOSIVE ORDNANCE
PART 3 - PYROTECHNICS
Chapter 8 - AIRCRAFT PYROTECHNICS
Section 9 - PHOTOFLASH BOMBS

M23A1 (Obsolete)

Over-all length, inches

25.4

Diameter of case, inches

4.25

Weight, pounds

10.6

Weight of flash powder, pounds

7.75

Fixed delay, seconds

15

Duration of flash, second

0.20

Intensity of flash, candlepower

150,000,000

Release altitude, feet

4,000 - 7,000

Use: This bomb is used to provide light of high intensity and short duration for night photography from low altitudes.

Description: The bomb case is made of cardboard and closed with metal ends, one of which is marked "Front" to insure proper loading in the rack. This end contains the hang-wire assembly just before the Fuze Assembly M23A1. The fuze assembly is made up of the friction wires attached to the hang wire, match composition, quick match, delay ele-ment, upper and lower rings, and base ignition charge immediately adjacent to the flash-light powder charge. The hand wire is attached to the arming-wire retainer.

Operation: When the bomb is released, the hang wire remains attached to the arm-ing-wire retainer. As the bomb drops, the hang wire pulls the friction wires through the match composition of the fuze. The hang wire also pulls out the hang-wire container, al-lowing both the hang wire container and the bomb to fall free. The flame from the match composition ignites a piece of quick match, which in turn ignites a delay element. After 15 seconds, the delay element ignites the base charge of the fuze, which sets off the flashlight powder charge. The flash lasts a fifth of a second.

Figure 193. Photoflash Bomb M23A1

Section 8 - Smoke Streamer Bombs: T29AN-M46