Flame holder for a hybrid rocket motor
First Claim
1. A hybrid rocket motor, comprising:
- a) a container having a fluid reactant therein and an outlet;
b) a combustion chamber defining a longitudinal axis and containing a solid reactant therein;
c) an injector between said container and said combustion chamber through which said fluid reactant is injected into said combustion chamber to be combusted with said solid reactant; and
d) a solid propellant at or near said injector.
1 Assignment
0 Petitions
Accused Products
Abstract
A flame holder is provided at a head end of a combustion chamber of a hybrid rocket motor. The flame holder includes a high-temperature casing defining a cavity, and a solid propellant within cavity around or near the injector. The propellant may be provided in an annulus within the casing, such that the flame plume from the burning propellant is substantially parallel to the flow of the oxidizer, or may be generally cylindrical within a cylindrical casing such that the flame plume of the burning propellant is substantially perpendicular to the oxidizer flow. The solid propellant is preferably ignited substantially simultaneously with the ignition of the hybrid motor. The burning of the solid propellant prevents the flame from combustion of the fluid oxidizer and solid fuel in the hybrid motor from drifting and thereby stabilizes the flame front.
2 Citations
22 Claims
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1. A hybrid rocket motor, comprising:
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a) a container having a fluid reactant therein and an outlet;
b) a combustion chamber defining a longitudinal axis and containing a solid reactant therein;
c) an injector between said container and said combustion chamber through which said fluid reactant is injected into said combustion chamber to be combusted with said solid reactant; and
d) a solid propellant at or near said injector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hybrid rocket motor, comprising:
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a) a container having a fluid reactant therein and an outlet;
b) a combustion chamber containing a solid reactant therein;
c) an injector between said container and said combustion chamber through which said fluid reactant is injected into said combustion chamber to be combusted with said solid reactant; and
d) a casing defining a cavity around a portion of said injector;
e) a solid propellant provided in said cavity. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A hybrid rocket motor, comprising:
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a) a container having a fluid reactant therein and an outlet;
b) a combustion chamber containing a solid reactant therein and having a head end and an aft end;
c) an injector between said container and said combustion chamber; and
d) a flameholding means for stabilizing a flame from a combustion of said fluid and solid reactants at said head end of said combustion chamber. - View Dependent Claims (18, 19, 20, 21)
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22. A projectile, comprising:
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a) a motor having a forward end and an aft end, said motor including, i) a container having a fluid reactant therein and an outlet, ii) a combustion chamber containing a solid reactant therein and having a head end and an aft end, iii) an injector between said container and said combustion chamber, and iv) a flameholding means for stabilizing a flame from a combustion of said fluid and solid reactants at said head end of said combustion chamber;
b) a tubular body around said motor;
c) a nose portion coupled to said forward end of said motor; and
d) a nozzle coupled to said aft end of said motor.
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Specification