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Title: 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 SNL; EDB-85-048156
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}
}