Piezoelectric fuse for projectile with safe and arm mechanism

Details Piezoelectric fuse for projectile with safe and arm mechanism Piezoelectric fuse for projectile with safe and arm mechanism

1988-08-22

1991-07-23

Brown, David H.

Ammunition and explosives

Igniting devices and systems

Arming devices

102210, F42C 1102

Patent

active

050333828

ABSTRACT:
A piezoelectric fuse, and safe and arm mechanism for a small active projectile is disclosed including a piezoelectric element mounted within the projectile near the leading end thereof with an impact deformable electrically conductive shell spaced from and at least partially surrounding the piezoelectric element and a resilient material substantially filling the space between the piezoelectric element and the shell. Electrical leads connect the detonator to the shell and to a rearward piezoelectric element contact so that upon projectile impact, the shell deforms compressing the piezoelectric element generating a voltage thereacross, and thereafter, the shell makes electrical connection with a piezoelectric element forward contact actuating the detonator. The safe and arm mechanism includes an interrupter located in a "safe" position between the detonator and a lead charge. The interrupter may move from the safe position only upon both sufficient angular velocity and sufficient linear acceleration of the projectile.

REFERENCES:
patent: 2458468 (1949-01-01), Flett
patent: 2892411 (1959-06-01), Brown et al.
patent: 3031968 (1962-05-01), Dowdell et al.
patent: 3256817 (1966-06-01), Rabinow et al.
patent: 3603259 (1971-09-01), Webb
patent: 3742857 (1973-07-01), Schmidt et al.
patent: 3842742 (1974-10-01), Harnau
patent: 4026214 (1977-05-01), Backstein
patent: 4464991 (1984-08-01), Kaiser
patent: 4606272 (1986-08-01), Kerdraon
patent: 4662279 (1987-05-01), Popovitch
Arradcom, DRDAR-SCA-CF, M505A3 20 mm projectile Oct. 1, 1980.

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