Propeller nozzles thereby reducing lateral forces

Details Propeller nozzles thereby reducing lateral forces Propeller nozzles thereby reducing lateral forces

1987-07-29

1989-04-18

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Reaction motor discharge nozzle

With erodible, frangible or fusible nozzle part

23926519, B64D 3304, B63H 1110

Patent

active

048219622

ABSTRACT:
A propeller nozzle, particularly for a missile, comprises a revolution pipe having a forward convergent portion, a minimum section, and a rearward divergent portion with a large outlet throat section. The invention is designed to minimize lateral forces in the nozzle due to a separation of gaseous fluid exhausting from the propeller, during the start of the propeller pressure increase. For this purpose, the pipe comprises means disposed in the vicinity of a section internal to the divergent portion and substantially downstream from the minimum section for making a gaseous fluid separation stable, symmetrical and coaxial to the nozzle. These means can include a groove and/or a projection, preferably destroyable through mechanical erosion and/or melting under the effects of the gaseous fluid.

REFERENCES:
patent: 2944623 (1960-07-01), Bodine
patent: 3048972 (1962-08-01), Barlow
patent: 3057148 (1962-10-01), Kimpel
patent: 3237402 (1966-03-01), Steverding
patent: 3352495 (1967-11-01), Fischer
patent: 3749317 (1973-07-01), Osofsky
patent: 3877646 (1975-04-01), McCullough
patent: 4434614 (1984-03-01), Gill

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