초록 ▼

A contoured thrust reverser and lobed nozzle noise suppressor is meant for use with gas turbine engines that have conventional post-exit thrust reversers and that require only moderate levels of noise suppression. The contoured thrust reverser and lobed nozzle noise suppressor comprises a convention

A contoured thrust reverser and lobed nozzle noise suppressor is meant for use with gas turbine engines that have conventional post-exit thrust reversers and that require only moderate levels of noise suppression. The contoured thrust reverser and lobed nozzle noise suppressor comprises a conventional tailpipe frame terminating in a lobed nozzle, and a conventional thrust reverser mechanism holding a pair of contoured blocker doors. In a deployed position, the blocker doors lie aft of the lobed nozzle, having been moved there by the thrust reverser mechanism. The blocker doors abut one another and form a fore-facing scoop, wherein any engine exhaust exiting the lobed nozzle is redirected towards the fore of the engine. In a stowed position, the blocker doors lie over the tailpipe frame and align and nestle together with the engine's cowling. Since the blocker doors partially overlap the lobed nozzle in this position, aft portions of each blocker door are contoured to correspond in shape to an exterior fore portion of the lobed nozzle of which they overlap. The lobed nozzle and contoured blocker doors provide a substantially continuous outer surface aerodynamically configured to help in mixing ambient air with engine exhaust, so as to reduce engine noise.

대표청구항 ▼

[ Having thus described the invention, what is claimed is:] [1.]1. A gas turbine engine having an attached thrust reverser and noise suppressor comprising:a. a lobed nozzle attached to an aft end of an engine tailpipe frame, wherein the lobed nozzle is shaped to mix ambient air external to the frame

[ Having thus described the invention, what is claimed is:] [1.]1. A gas turbine engine having an attached thrust reverser and noise suppressor comprising:a. a lobed nozzle attached to an aft end of an engine tailpipe frame, wherein the lobed nozzle is shaped to mix ambient air external to the frame with engine exhaust; andb. a post-exit thrust reverser comprising a pair of thrust reverser actuators attached to the frame and operably connected to a pair of contoured blocker doors, wherein the actuators are controllable to position the blocker doors at a deployed position in which the contoured blocker doors lie aft of the lobed nozzle and meet to form a fore-facing scoop, and wherein the actuators are controllable to position the blocker doors in a stowed position in which the blocker doors lie over the frame substantially fore of the lobed nozzle with an aft portion of each contoured blocker door overlapping the lobed nozzle; andc. wherein the portions of the contoured blocker doors that overlap the lobed nozzle are correspondingly shaped thereto, whereby the contoured blocker doors, when in the stowed position, nestle together with the lobed nozzle to form a substantially continuous external lobed surface.