Constant thrust hybrid rocket motor

Details Constant thrust hybrid rocket motor Constant thrust hybrid rocket motor

1981-09-10

1984-01-10

Croyle, Carlton R.

Power plants

Reaction motor

Solid and fluid propellant

60258, F02K 956

Patent

active

044246790

ABSTRACT:
A constant thrust hybrid rocket motor having a valve assembly therein which utilizes a fixed diameter orifice in combination with a valve having a variable sized opening therein in order to provide a regulated flow of oxidizer to the combustion chamber of the rocket motor. By selecting the size of the fixed diameter orifice such that it is slightly less than required to yield oxidizer flow at highest density oxidizer conditions (lowest temperature) and selecting the size of the combination of the fixed orifice and the open position of the variable opening such that it is slightly greater than required at lowest density oxidizer conditions (highest temperature), the operation of the rocket motor can be reliably maintained over a wide temperature range and without experiencing wide pressure variations by regulating the size of the variable opening.

REFERENCES:
patent: 1883240 (1932-10-01), Phelan
patent: 3041828 (1962-07-01), Broders et al.
patent: 3058303 (1962-10-01), Mulready
patent: 3156092 (1964-11-01), Holzman
patent: 3272770 (1966-09-01), Lundahl
patent: 3373564 (1968-03-01), Maybin
patent: 3390698 (1968-07-01), Carmichael et al.
patent: 3636712 (1972-01-01), Kaufmann
patent: 3702536 (1972-11-01), Gregory
patent: 3740946 (1973-06-01), Welton et al.
patent: 4000613 (1977-01-01), Fukumoto et al.
patent: 4286767 (1981-09-01), Hashimoto
patent: 4341224 (1982-07-01), Stevens

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