Thrust reverser for a propfan engine
AssigneeMTU Motoren-und Turbinen-Union
InventorsAlois Rohra, Peter Tracksdorf
Life of this patent
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Abstract
An engine has a shroud which surrounds one of a propfan and a propeller having blades. The shroud has a variable geometry. A direction of the air flow inside a duct of the shroud is reversible via an adjustment of the blades for the reversal of the thrust of the engine. A separately movable nozzle ring forms a rearward end of the shroud. The nozzle ring is axially displaceable to an extent such that its trailing edge forms wherein air flow is promoted around the end of the shroud.
Claims15
An engine having a shroud which surrounds one of a propfan and a propeller having blades, said shroud having a variable geometry, a direction of an air flow inside a duct of said shroud being reversible via an adjustment of said blades for the reversal of the thrust of said engine, comprising:
- a separately movable nozzle ring forming a rearward end of the shroud, said nozzle ring being axially displaceable to an extent such that its trailing edge forms with an end of the shroud an edge of greater radial cross section than said trailing edge wherein air flow is promoted around said end of the shroud.
An engine having a shroud of a variable geometry which surrounds one of a propfan and a propeller, an air flow direction being reversible inside a shroud duct via adjustable blades for thrust reversal, comprising:
- a movable nozzle ring formed of a rearward end of the shroud, said nozzle ring being divided into separate ring segments, wherein the individual ring segments, via swivelling levers, can be moved axially forward and radially toward the outside as well as while turning about their body axis which is situated perpendicularly with respect to a translatory moving plane, into such a position that, in their moved-out end position, they assume a position which is offset from the rearward end of the shroud and adjusted with respect to an outer air flow, a trailing edge of the ring segments pointing to a core housing of the engine.
Dependencies are inferred from the claim text.