Aerodynamic flail for a spinning projectile

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:875253

Cole, James K. ^[1]

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1. Albuquerque, NM

A flail is provided which reduces the spin of a projectile in a recovery system which includes a parachute, a cable connected to the parachute, a swivel, and means for connecting the swivel to the projectile. The flail includes a plurality of flexible filaments and a rotor for attaching the filaments to the front end of the projectile. The rotor is located radially with respect to the spinning axis of the projectile. In one embodiment, the projectile includes a first nose cone section housing a deployable spin damping assembly; a second nose cone section, housing a deployable parachute assembly; a shell section, supporting the first and second nose cone sections during flight of the projectile; a mechanism for releasing the first nose cone section from the second cone section; and a mechanism for releasing the second nose cone section from the shell section. In operation of this embodiment, the deployable spin damping assembly deploys during flight of the projectile when the mechanism for releasing the first nose cone section from the second nose cone section are actuated. Then, upon actuation of the mechanism for releasing the second nose cone section from the shell section, two things happen: the spin damping assembly separates from the projectile; and the deployable parachute assembly is deployed.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-76DP00789
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): H000776
• Application Number: 07/306359
• OSTI ID: 875253
• Resource Relation: Patent File Date: 1989 Feb 06
• Country of Publication: United States
• Language: English

Related Subjects

statutory invention registration
aerodynamic
flail
spinning
projectile
provided
reduces
spin
recovery
parachute
cable
connected
swivel
means
connecting
plurality
flexible
filaments
rotor
attaching
front
located
radially
respect
axis
embodiment
nose
cone
section
housing
deployable
damping
assembly
shell
supporting
sections
flight
mechanism
releasing
operation
deploys
actuated
actuation
happen
separates
deployed
located radially
shell section
cable connected
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