Advisability of issuing approved type certificates to parachute manufacturers, whose products meet number of stipulated requirements of Government, is being considered by Department of Commerce; test of certainty; Government strength test; in fourth test rate of descent for live drop must not exceed 18 ft. per sec.
Parachute certification plan
US Aviation Quarterly
1929
1 Fig.
Article (Journal)
English
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NTIS | 1969
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