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Effect of changes in physical parameters on the stability characteristics of parachutes descending through real fluids

Published online by Cambridge University Press:  04 July 2016

T. Yavuz
T. Yavuz*
Affiliation:
Erciyes University, Kayseri, Turkey
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Summary

By introducing experimentally-obtained apparent mass components into the relevant equations of motion, performance characteristics of descending parachutes have been obtained which so resemble those observed as to give an appropriate basis for performance prediction. The effects on pitching oscillations caused by certain changes in system physical parameters; the size of the parachute canopy, the length of the rigging lines and the store mass, have all been considered as well as the effect of parachute altitude. For good stability in pitch the significant ratio of physical parameters is that of store mass to effective canopy mass, inclusive of apparent mass.

Type
Research Article
Information
The Aeronautical Journal , Volume 89 , Issue 889 , November 1985 , pp. 349 - 352
Copyright
Copyright © Royal Aeronautical Society 1985 

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References

1. Yavuz, T. The equations of Motion for a Parachute System Descending through a Real Fluid. See pp 343-348 of this issue.Google Scholar
2. Yavuz, T. Aerodynamics of Parachutes and Like Bodies in Unsteady Motion. PhD Thesis, University of Leicester, 1982.Google Scholar
3. Yavuz, T. and Cockrell, D. J., Experimental Determination of Parachute Apparent Mass and its Significance in Predicting Dynamic Stability. AIAA paper 81-1920. 7th Aerodynamic Decelerator and Balloon Technology Conference, San Diego, 1981.Google Scholar
4. Knacke, T. W. Parachute Recovery System Design Manual. US Naval Weapons Center, China Lake, California, NWC TP 6575. To be published in 1986.Google Scholar