VARIABLE-GEOMETRY CONVERGENT-DIVERGENT EXHAUST NOZZLE
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United States of America Patent
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Issued Date -
Jun 13, 2024
app pub date -
Aug 15, 2023
filing date -
Sep 13, 2022
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Abstract
A variable-geometry convergent-divergent exhaust nozzle includes: a duct to receive exhaust from a combustor; and first and second flap assemblies each including proximal and distal flaps. The first and second proximal flaps are rotatably coupled to the exhaust duct and include entry surfaces that in part define a nozzle passageway to convey the exhaust to an exterior of the engine. The first and second distal flaps are rotatably coupled to the first and second proximal flaps. The first distal flap includes converging and diverging surfaces angled with respect to each other. The second distal flap includes converging and diverging surfaces angled with respect to each other. The converging surfaces define at least in part a convergent portion of the nozzle passageway. The first and second diverging surfaces define at least in part a divergent portion of the nozzle passageway.
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