Canopy breaking device

Details Canopy breaking device Canopy breaking device

1993-03-17

1994-04-12

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft structure

Details

244122AF, 49141, 137 681, 81 20, B64D 2500

Patent

active

053019040

ABSTRACT:
An aircraft canopy breaking device, having means for penetrating the canopy lazing material upon application of an applied force from the rising ejection seat to the penetrating means. The device further comprises prepositioning means for prepositioning the penetrating means at a fixed distance from the canopy glazing material, shielding the penetrating means from inadvertently contacting the canopy glazing material, other material or personnel, and compressing whereby upon application of a force the penetrating means contacts the canopy glazing material causing crack propagation in the canopy glazing material.

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patent: 4570879 (1986-02-01), Dupin
patent: 4570880 (1986-02-01), Gehse
patent: 4580745 (1986-04-01), Brophy
patent: 5072896 (1991-12-01), McIntyre

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