Recoilless rifle projectile fuzes

These fuzes are similar to those used in artillery projectiles and the following types are described in TM 9-1300-204 (1959) (Ref 40)  

PIBD Fuze, M509 - for use in HEAT projs of various calibers (pp 36-37) 

PD Fuzes, M503A2, M503A1 or M503 - for use with 57-mm projectiles (pp 40-41) 

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Following recoilless rifle projectile fuzes are described in TM 9-1300-203 (1967) (Ref 52) ... 

Part D, give cutaway views of typical 57, 75, 90, 105 106-mm recoilless rifle ammunition Fuzes used in recoilless rifle projectiles are listed in Section 5, Part C, item f... 

Locations of some of these fuzes in recoilless rifle projectiles are shown on Figs 45, 46, 47, 48 49 in Section 3, Part D Types and calibers of projectiles used in recoilless rifles are listed in Section 4, Part B, item b)... 

British. No information is available on fuzes for projectiles used in cannons, howitzers, mortars and recoilless rifle. Fuzes used in rockets are described in confidential TM 9-1985-1(1953) (Ref 26, pp 351 to 372)... 

Uj) Telemetry Tests (Low Spin and Low Acceleration). The purpose of these tests is to investigate the performance of fuzes used with ammunition of low acceleration and spin parameters, such as the recoilless rifle and mortar projectiles. The techniques require the use of FM transmitters potted into the projectiles for transmitting such information as switch closure and electrical charge generation in flight. The telemetry transmitting station, like the transmitter in the round, are both assembled from std radio components modified for these particular tests (p IIIB-22 of Ref 39)... 

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