Research/Patents/US 5664742
US 5664742

PLUME AVOIDANCE MANEUVERS

Assignee

Filed

Jul 31, 1989

Granted

Sep 9, 1997

Location

PALO ALTO CA US

Abstract

A maneuver for minimizing perturbations on a released re-entry body due toases exhausted from the nozzles of the post-boost control system in which after release of the re-entry body from a position compatible accomplishing with the maneuver, a flip turn is initiated in a near-nozzle-off configuration. The turn is preferably executed in a direction to the side of the direction of the velocity gain required for the platform to reach the next release location. The flip turn is stopped at a lateral escape angle, preferably after turning through an angle of 90 degrees or greater, by initiating an oppositely directed body-axis turn. After being accelerated for a lateral escape time, the platform is oriented in the direction of the required gain in velocity to reach the next release location and coarse thrust is activated. Prior to arrival at the release location, a body-axis turn is accomplished to orient the platform in the proper position for the next release event.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 5, 1990

Rescinded

Jun 12, 1996

Duration

6 years, 4 months

Inventor

  • 1WILLIAM J. MASON

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records