Heterogeneous fuel for hybrid rocket

Details Heterogeneous fuel for hybrid rocket Heterogeneous fuel for hybrid rocket

1993-12-23

1996-06-25

Jordan, Charles T.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

Solid particles dispersed in solid solution or matrix

149 194, 149 195, 149 196, C06B 4510

Patent

active

055296483

ABSTRACT:
Heterogeneous 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.

REFERENCES:
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patent: 3703080 (1972-11-01), Longwell
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patent: 3931040 (1976-01-01), Breazeale
patent: 4790891 (1988-12-01), Halliday et al.
patent: 4882395 (1989-11-01), Ahad
patent: 5049212 (1991-09-01), Colick
patent: 5339624 (1994-08-01), Calsson et al.

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