✦ LIBER ✦

Planning and designing direction-finding systems : Selfridge, K.M. In: Compass for Technology, Proceedings of the 23rd Annual Meeting of the Human Factors Society, Boston, Massachusetts, Oct 29–Nov 1 1979, Edited by C.K. Bensel, pp 461–463

Publisher: Elsevier Science
Year: 1980
Tongue: English
Weight: 147 KB
Volume: 11
Category: Article
ISSN: 0003-6870
DOI: 10.1016/0003-6870(80)90033-2

No coin nor oath required. For personal study only.

✦ Synopsis

The apparatus used to eliminate reaction forces external to the body (which are absent during freefall) and the method of recording maximum pull forces as a function of time are described in this paper. Pull forces which can be exerted for periods of 0"25, I, 1"5, 2 and 2"5 s during a 5 s pull are presented in percentile form. A substantial percentage of female parachutists could not exert the maximum pull force permitted by the relevant parachute specification. The relatively low level of strength exhibited by the weakest groups of the population emphasises the need for such basic information in equipment design. 11.3.18 (78180) Drury, C.G. Safety in manual materials handling.

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