Jet engine nacelle

Details Jet engine nacelle Jet engine nacelle

1988-06-20

1989-09-12

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft power plants

137 152, B64D 3302, F02C 704

Patent

active

048652687

ABSTRACT:
A construction is provided to aerodynamically affect a jet engine nacelle in its intake lip area primarily by forming and pivotally arranging flaps on a radially outer circumferential sector of the intake lip such that from a first extreme position, in which they are adapted to a cruise lip geometry, they can be moved into a second extreme position, in which they radially expand the outer contour of the intake lip while providing and exposing air blowoff ducts with their rear side, said ducts terminating at the outer wall of the nacelle at essentially a tangent therewith. Further air injection flaps are also provided in certain embodiments for forming air injection ducts through the intake lip walls during certain engine operating conditions.

REFERENCES:
patent: 2699906 (1955-01-01), Lee et al.
patent: 3222863 (1965-12-01), Klees et al.
patent: 3446223 (1969-05-01), Hancock
patent: 3664612 (1972-05-01), Skidmore et al.
patent: 3915413 (1975-10-01), Sargisson
patent: 4025008 (1977-05-01), Peikert
patent: 4474344 (1984-10-01), Bennett

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