Notes on the Opening Behaviour and the Opening Forces of Parachutes-Reference-Cited by-同舟云学术

Notes on the Opening Behaviour and the Opening Forces of Parachutes

Published:1949-11 Issue:467 Volume:53 Page:1053-1062
ISSN:0368-3931
Container-title:Journal of the Royal Aeronautical Society
language:en
Short-container-title:J. R. Aeronaut. Soc.

Author:

O'Hara F.

Abstract

SummaryAn approximate theory of parachute opening is suggested. A formula is derived for the critical opening speed (the highest speed at which the canopy develops fully) which indicates variation of the critical speed with fabric porosity, rigging line length and so forth, of the order observed in wind tunnel tests. Assuming a simple form for the air flow about the parachute, a formula is obtained also for the rate of opening of a canopy. This enables an analysis to be made of the motion of a store-parachute system during canopy development. The theory confirms the possibility of a large increase with altitude, found experimentally, in the maximum parachute force on the store.

Publisher

Cambridge University Press (CUP)

Reference8 articles.

1. Young A. D. Notes on the Aerodynamic Characteristics of Parachutes. R.A.E. Report No. Aero. 1752. (A.R.C. 5886). May 1942.

2. Richards G. J. Tests in the R.A.E. Large Wind Tunnel on the “Squidding” of Parachutes. R.A.E. Report No. Exe./125. June 1942.

3. Duncan W. J. The Cause of the Spontaneous Opening and Closing of Parachutes. (The Phenomena of “Squidding”). R. & M. No. 2119. December 1943.

4. Howard H. B. Loads and Opening Times of Parachutes. C.T.I. Tech. Note No. 155. October 1944.

5. O'Hara F. , and Thompson A. G. An Investigation of the Forces on Equipment During Parachute Development. Report No. A.F.E.E./Res. 15. April 1945.

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