Accession Number : AD0691222

Title :   DEVELOPMENT OF A DYNAMIC MODEL OF UNRESTRAINED, SEATED MAN SUBJECTED TO IMPACT.

Descriptive Note : Final technical rept. 20 Nov 67-19 Jan 69,

Corporate Author : TECHNOLOGY INC DAYTON OHIO

Personal Author(s) : Yeager,Robert R. ; Machowsky,Gerald V. ; Shanahan,Robert J.

Report Date : 20 MAR 1969

Pagination or Media Count : 90

Abstract : Analytical models were developed to duplicate through computer techniques the responses of human personnel subjected to several decelerational environments produced by dropping a seat-man assembly within a vertical drop tower. To this end, a mathematical model was constructed to simulate the response of the test seat. Comparison of computed curves derived from the analytical models with measured curves based on drop test data showed agreement for 7 G peak deceleration environments. Nonlinearities were developed for the nonlinear critical damping ratio for deceleration levels below 7 G's. (Author)

Descriptors :   (*EJECTION SEATS, IMPACT SHOCK), (*ANATOMICAL MODELS, RESPONSE(BIOLOGY)), MATHEMATICAL MODELS, ANTHROPOMETRY, SIMULATION, DROP TESTS, HUMANS, CORRELATION TECHNIQUES, PHYSIOLOGY, COMPUTER PROGRAMMING, DIGITAL COMPUTERS, DECELERATION, INSTRUMENTATION, NONLINEAR SYSTEMS, TEST FACILITIES

Subject Categories : Human Factors Engineering & Man Machine System
      Escape, Rescue and Survival

Distribution Statement : APPROVED FOR PUBLIC RELEASE