Vectorable nozzle mounting

Details Vectorable nozzle mounting Vectorable nozzle mounting

1993-03-25

1994-09-20

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, steering propulsion

Fluid

244 124, 244 23D, 2391271, B64D 3304

Patent

active

053482522

ABSTRACT:
A vectorable nozzle mounting for an engine installation in a VSTOL aircraft in which hot gas nozzles are mounted on the airframe is described. A swivelable nozzle is mounted by means of a bearing on an intermediate fixed member such as a mounting ring on the airframe. The hot exhaust gas is discharged into the nozzle through a stub duct carried by the engine casing. Misalignment and movement between the duct and the nozzle is accommodated by movable sealing rings carried in the intermediate member which engage the outer surface of the duct. The sealing rings are spaced apart to form an annular chamber which is supplied with cooling air at a higher pressure than the pressure in the exhaust duct. The cooling air is arranged to cool the nozzle bearing and leakage passed the seals is of cooling air into the nozzle thus excluding hot exhaust gas from the engine bay.

REFERENCES:
Rolls-Royce, "The Jet Engine", published 1986, Rolls-Royce; Figure 18--6, p. 190.

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