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Heterogeneous fuel for hybrid rocketHeterogeneous fuel compositions suitable for use in hybrid rocket engines and solid-fuel ramjet engines, The compositions include mixtures of a continuous phase, which forms a solid matrix, and a dispersed phase permanently distributed therein. The dispersed phase or the matrix vaporizes (or melts) and disperses into the gas flow much more rapidly than the other, creating depressions, voids and bumps within and on the surface of the remaining bulk material that continuously roughen its surface, This effect substantially enhances heat transfer from the combusting gas flow to the fuel surface, producing a correspondingly high burning rate, The dispersed phase may include solid particles, entrained liquid droplets, or gas-phase voids having dimensions roughly similar to the displacement scale height of the gas-flow boundary layer generated during combustion.
Document ID
20080004123
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Stickler, David B.
Date Acquired
August 24, 2013
Publication Date
June 25, 1996
Subject Category
Spacecraft Propulsion And Power
Funding Number(s)
CONTRACT_GRANT: NAS3-26914
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,529,648
Patent Application
US-PATENT-APPL-SN-173363
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