Rotating flexible drag mill
Abstract
A rotating parachute for decelerating objects travelling through atmosphere at subsonic or supersonic deployment speeds includes a circular canopy having a plurality of circumferentially arranged flexible panels projecting radially from a solid central disk. A slot extends radially between adjacent panels to the outer periphery of the canopy. Upon deployment, the solid disk diverts air radially to rapidly inflate the panels into a position of maximum diameter. Air impinging on the panels adjacent the panel slots rotates the parachute during its descent. Centrifugal force flattens the canopy into a constant maximum diameter during terminal descent for maximum drag and deceleration.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6063087
- Application Number:
- ON: TI85005737
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; PARACHUTES; DESIGN; REENTRY VEHICLES; SPACE VEHICLES; VEHICLES; 420200* - Engineering- Facilities, Equipment, & Techniques
Citation Formats
Pepper, W B. Rotating flexible drag mill. United States: N. p., 1984.
Web.
Pepper, W B. Rotating flexible drag mill. United States.
Pepper, W B. Wed .
"Rotating flexible drag mill". United States.
@article{osti_6063087,
title = {Rotating flexible drag mill},
author = {Pepper, W B},
abstractNote = {A rotating parachute for decelerating objects travelling through atmosphere at subsonic or supersonic deployment speeds includes a circular canopy having a plurality of circumferentially arranged flexible panels projecting radially from a solid central disk. A slot extends radially between adjacent panels to the outer periphery of the canopy. Upon deployment, the solid disk diverts air radially to rapidly inflate the panels into a position of maximum diameter. Air impinging on the panels adjacent the panel slots rotates the parachute during its descent. Centrifugal force flattens the canopy into a constant maximum diameter during terminal descent for maximum drag and deceleration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {5}
}
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