Method for making a throat insert for rocket thrusters

Details Method for making a throat insert for rocket thrusters Method for making a throat insert for rocket thrusters

1997-08-22

2000-10-24

Jordan, Charles T.

Metal working

Method of mechanical manufacture

Rocket or jet device making

164 80, 164 98, 164111, B23P 1500

Patent

active

061347817

ABSTRACT:
A thruster rocket engine throat insert (12) has a thin walled shell (54) made from a high strength, oxidation resistant material. The shell (54) having a throat (48) of reduced cross-section and a radially extending annular stiffening ring (60) located at the throat (48). A casing (56) made from a material having a thermal conductivity at least 10 times greater than that of shell (54) is molded around an outer surface (58) of shell (54) and has a generally cylindrical exterior surface (59). Shell (54) resists yielding and oxidation caused by the extreme temperatures of rocket fuel combustion products passing through the throat insert (12), while the casing (56) acts to efficiently transfer heat from the shell (54).

REFERENCES:
patent: 3485290 (1969-12-01), Campbell
patent: 3888295 (1975-06-01), Schillinger
patent: 4584171 (1986-04-01), Niino et al.
patent: 5572865 (1996-11-01), Sackheim et al.

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