Accession Number:

ADB029067

Title:

A-10 Windshield Spall Tests.

Descriptive Note:

Final rept. Sep 73-Feb 78,

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Report Date:

1978-04-01

Pagination or Media Count:

58.0

Abstract:

Ballistic tests were conducted to determine the susceptibility to spall of two different types of bullet resistant glass. The specific purpose was to verify attainment of specification requirements to defeat the design threat and minimize injury to the pilot from backface spall at 200 fps beyond design impact condition. Both types consisted of transparent glass panels laminated together with polyvinyl butyral interlayers. The first type contained three glass panels the second type contained four. The tests showed that as the number of glass layers increased, less backface spall was generated. The loss of visibility when hit by a projectile was about the same for both types. Tests were also conducted on two different types of material for the side windshield panels of the A-10, one of stretched acrylic and the other an acrylic sandwich consisting of an as-cast acrylic-poly-carbonate laminate. The results showed that the as-cast acrylic-polycarbonate laminate material was superior to the stretched acrylic for reduced susceptibility to spall and reduced lethal hazard posed to the pilot. Author

Subject Categories:

  • Attack and Fighter Aircraft
  • Ceramics, Refractories and Glass
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE