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US 2006/0196382 A1Published application
Projectile fuze
AssigneeSN Technologies S.A.
InventorsJean-pierre Golay, Olivier Pronini, Claude Robert-Nicoud
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AssigneeSN Technologies S.A.
InventorsJean-pierre Golay, Olivier Pronini, Claude Robert-Nicoud
Estimating the term…
Fuze including safety element (30) includes an acceleration detector (31) that acts on a timer (32) coacting with a primer housing rotor (14). Rotation of the rotor can be halted by a second safety device (35) responsive to the dynamic pressure generated by the speed of the projectile (11) in flight. For this purpose, the device includes a diaphragm (36) engaging a flexible blade (51) to space apart the end (55) of the blade and the rotor when the dynamic pressure has a predetermined value, whereby a primer (18) can be moved into line in the explosive train. When the dynamic pressure is too low, the end (55) stops the rotor (14) from rotating and the firing procedure is also blocked in a notch in the rotor (14). The resulting fuze thus has highly reliable dual safety element responsive to two separate physical phenomena and having a simple construction.
Missile fuse comprising an ignition device (12) and security means (30) intended to enable ignition of the missile only under predetermined conditions, characterised in that the security means contain a detection device (35) that is sensitive to the dynamic air pressure arising at the missile (11) in flight, and that is designed so as to enable ignition of the missile when this dynamic pressure attains a predetermined value of dynamic pressure corresponding to a given speed of the missile, but to prevent ignition of the missile when the dynamic pressure does not attain this predetermined pressure value
Dependencies are inferred from the claim text.