Hot Gas TVC For Planetary Ascent Vehicle

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CA69C
Agency Tracking Number: 094221
Amount: $594,202.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solicitation Year: 2009
Solicitation Topic Code: S3.08
Solicitation Number: N/A
Small Business Information
Wickman Spacecraft & Propulsion Co.
WY, Casper, WY, 82604-1339
DUNS: 026732599
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Wickman
 Principal Investigator
 (307) 307-5895
 jwickman@wickmanspacecraft.com
Business Contact
 John Wickman
Title: Business Official
Phone: (307) 307-5895
Email: jwickman@wickmanspacecraft.com
Research Institution
 Stub
Abstract
A Mars ascent vehicle (MAV) uses solid rocket motors to propel soil samples into orbit, but the motors cannot provide steering. Flexseal TVC control is planned for the first stage while hydrazine thrusters will be used for spin stabilization of the second stage. This approach is heavy and results in a spinning sample container in orbit, which is difficult to recover. Wickman Spacecraft & Propulsion Company (WSPC) proposes innovative hot gas thrusters for steering that use the gases from the solid rocket combustion chambers. This approach is lighter, improves orbit insertion accuracy and provides a non-spinning orbiting container to increase mission success probability.The MAV valves must handle metalized gases at 3,093 C. During Phase I, WSPC demonstrated a hot gas valve operating above 3,093 C with the same propellant to be used in MAV. Valves from all other companies must operate at 2,760 C or below with little metal in the exhaust gas. During Phase II, WSPC will demonstrate a MAV first stage thruster and multiple MAV first stage thrusters operating from a single solid rocket motor using MAV solid propellant. This final demonstration test will simulate a typical MAV first stage TVC duty cycle.

* information listed above is at the time of submission.

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