Aircraft Transparency Bird Impact Analysis Using the Magna Computer Program,
AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH
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The history of United States Air Force involvement in the development of bird impact resistant transparent crew enclosures for flight vehicles is briefly reviewed. The decision to develop analytical methods for the design of bird resistant transparencies is noted. The subsequent development of a finite element computer program called MAGNA is discussed and experience with the application of this code to the bird impact analysis of a tactical aircraft canopy is related. Results are presented which show MAGNA to be capable of realistically simulating the canopy response to bird impact. The strong dependence of the bird impact loading upon the dynamic response of the canopy is pointed out, and the need to develop the capability to independently account for the effects of this load-response coupling is stated.