Variable Thrust Hybrid Propulsion for Mission Flexibility

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9300-08-M-3117
Agency Tracking Number: O081-PR3-1147
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: OSD08-PR3
Solicitation Number: 2008.1
Small Business Information
45 Manning Road, Billerica, MA, 01821
DUNS: 030817290
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Stickler
 Executive Vice-President
 (978) 663-9500
 dstickler@aerodyne.com
Business Contact
 Charles Kolb
Title: President
Phone: (978) 663-9500
Email: kolb@aerodyne.com
Research Institution
N/A
Abstract
A novel type of high burning rate hybrid rocket fuel is an enabling technology for a wide range of DoD rocket propulsion applications. This fuel system has been demonstrated to provide burn rate at least four times that of conventional polymers, while retaining the physical properties and specific impulse capability of HTPB based fuels. The result is a high density impulse capability utilizing storable propellant combinations, while eliminating environmental hazards. This fuel maintains a hydrodynamically rough surface to radically enhance convective heat transfer rate, and hence the fuel burn rate. This is achieved by incorporating a particulate fuel material dispersed within a continuum phase polymer matrix. The dispersed fuel material is chosen to transition from solid to gas much more readily than the polymer matrix, and with a particle size scale sufficiently large that the resulting surface voids provide a hydrodynamically rough surface. Combustion of this fuel system maintains the rough surface as theparticles are continually exposed. Secondary effects include increased surface area; decreased fuel phase change enthalpy; and potential for increased specific impulse by inclusion of high energy compounds. The high fuel burn rate enables increased propellant mass fraction while retaining the strength and storage stability of polymeric fuels.

* Information listed above is at the time of submission. *

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