Research/Patents/US 5282357
US 5282357Tier 1 — UAP Program Assignee

HIGH PERFORMANCE DUAL MODE INTEGRAL PROPULSION SYSTEM

Assignee

TRW

Filed as: TRW INC.

Filed

Apr 19, 1990

Granted

Feb 1, 1994

Location

Redondo Beach CA (TRW)

Abstract

A propulsion system in which pure hydrazine is used as the fuel for both a bipropellant rocket engine for high-thrust performance and in multiple monopropellant thrusters for station keeping and attitude control functions. Use of a common fuel for both modes of operation significantly reduces propellant weight and inert propulsion system weight for any given mission requirements, and therefore increases the payload that can be delivered to and maintained in a desired orbit. Further, for station-keeping, the monopropellant thrusters can be augmented in performance by employing either electrothermal or additional direct chemical energy, arc jet operation, or force field acceleration, to provide increased specific impulse values up to 2,000 seconds or higher.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Dec 19, 1990

Rescinded

Jan 13, 1993

Duration

2 years

Inventor

  • 1ROBERT L. SACKHEIM

Sensitive facility: Redondo Beach CA (TRW)

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