Fluid sprinkling – spraying – and diffusing – Reaction motor discharge nozzle – With means controlling amount – shape or direction of...
Patent
1985-10-01
1987-07-21
Kashnikov, Andres
Fluid sprinkling, spraying, and diffusing
Reaction motor discharge nozzle
With means controlling amount, shape or direction of...
23926511, 60271, B63H 1110, B63H 1100, D01H 910
Patent
active
046812610
ABSTRACT:
An improved nozzle structure for an engine, such as a ramjet, rocket or turbojet, which generates thrust by expulsion of gaseous fuel combustion products along a thrust axis is described which comprises an annular wall structure defining an inlet and an outlet for the nozzle and having a contoured inner surface defining near the inlet a radially inwardly convergent annular ramp of predetermined length and convergence angle, near the outlet a radially outwardly divergent annular ramp of predetermined length and divergence angle, and a nozzle throat of predetermined diameter at the juncture of the annular ramps; a transverse web member disposed at the nozzle throat and extending diametrically of the annular wall, defining two substantially symmetrical passageways through the nozzle, having a leading edge near the inlet and trailing edge near the outlet, and having a double wedge shaped cross section symmetric with respect to a plane containing the thrust axis, the surface of the web member defining a pair of radially divergent ramps on the leading edge and extending from the inlet to the throat and a pair of radially convergent ramps from the throat to the trailing edge. The annular wall structure and web member comprise a heat resistant material such as a composite of carbon yarn within a carbon matrix, with some of the carbon fibers aligned along the length of the web, and a temperature resistant coating of pyrolytic graphite on both the annular wall structure and web.
REFERENCES:
patent: 2788635 (1957-04-01), Ford, Jr.
patent: 3743184 (1973-07-01), Mancus
patent: 3853586 (1974-12-01), Olcott
patent: 3896615 (1975-07-01), Slatkin et al.
patent: 3940067 (1976-02-01), Cherry et al.
patent: 3980105 (1976-09-01), Myskowski
patent: 4063684 (1977-12-01), O'Brien et al.
Conley Ralph R.
Wetzler Dallas G.
Burkhart Patrick N.
Kashnikov Andres
Scearce Bobby D.
Singer Donald J.
The United States of America as represented by the Secretary of
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