Accession Number : ADD016294

Title :   Canopy Breaking Device.

Descriptive Note : Patent, Filed 17 Mar 93, patented 12 Apr 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Guill, Frederick C

Report Date : 12 Apr 1994

Pagination or Media Count : 7

Abstract : An aircraft canopy breaking device, having means for penetrating the canopy glazing 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.

Descriptors :   *AIRCRAFT CANOPIES, *PATENTS, CRACK PROPAGATION, EJECTION, EJECTION SEATS, MATERIALS, PERSONNEL, SEATS, SHIELDING

Subject Categories : Aircraft
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE