Power plants – Reaction motor – Method of operation
Patent
1992-07-06
1994-01-04
Bertsch, Richard A.
Power plants
Reaction motor
Method of operation
60254, 60264, F02K 900
Patent
active
052749983
ABSTRACT:
A system is provided for reducing the emissions of hydrochloric acid (HCl) from solid fuel rockets, especially during ground disposal. An aqueous solution (40, FIG. 2 ) of an alkali metal hydroxide is injected as a mist (50) into the rocket chamber (32) as the rocket fuel (30) is burned. The reaction of the alkali metal with hydrogen chloride (HCl) produces a salt and thereby minimizes the presence of hydrochloric acid in the rocket exhaust. An injected neutralizing material which reduces hydrochloric acid, but which produces less thrust than an equal weight of rocket fuel, can be injected into an operating rocket which carries a payload high above the earth, with the injected material being injected only while the rocket is at a lower altitude when hydrochloric acid is most undesirable. The injected material can be produced by a small auxiliary rocket device (82, FIG. 4 ) whose exhaust (84) is delivered directly to the main rocket chamber (86), and with the exhaust of the auxiliary rocket device including a high proportion of magnesium to react with the hydrochloric acid with minimal degradation of rocket performance.
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Bertsch Richard A.
Freilich Arthur
Hornbaker Robert D.
Rosen Leon D.
Thorpe Timothy S.
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