The report presents the results of analytical study to establish methods of conducting the first exploratory tests, followed by a presentation of the methods used in the first experimental crash test. A Piasecki Model H-25A helicopter was employed in recreating a typical accident approximating an unsuccessful attempt to attain autorotation from a low altitude power failure. The instrumentation and research techniques used in (1) the measurement of the impact forces and accelerations, (2) the determination of the feasibility of the utilization of on-board recorders, and (3) the evaluation of certain problems inherent in the dynamic crash testing of full-scale VTOL aircraft are presented. Tentative results and the technical problems encountered are discussed and recommendations for subsequent testing are made. (Author)
U.S. Army H-25 Helicopter Drop Test, 22 October 1960
1960
106 pages
Report
Keine Angabe
Englisch
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