Patent ID: 9121369
Filing Date: 2015-09-01
Classification: B64D,F02C,F02K,F05D,Y10T

Abstract:
1. A nozzle arrangement for use with a supersonic jet engine configured to produce a plume of exhaust gases when the supersonic jet engine is operating at a predetermined power setting and moving at a predetermined Mach speed, the nozzle arrangement comprising: a nozzle configured to exhaust the plume of exhaust gases, the nozzle having a trailing edge; and a plug body partially positioned within the nozzle and coaxially aligned with the nozzle, the plug body having an expansion surface and a compression surface downstream of the expansion surface, a protruding portion of the plug body extending downstream of the trailing edge, the protruding portion of the plug body having a concave surface proximate a terminus of the plug body, the plug body having contours and dimensions configured to shape the plume of exhaust gases such that the plume of exhaust gases flows substantially parallel to a direction of a free stream of air flowing off of the trailing edge of the nozzle proximate the trailing edge of the nozzle when the supersonic jet engine is operating at the predetermined power setting and moving at the predetermined Mach speed and has further contours and dimensions that are configured to cause the plume of exhaust gases to isentropically turn the free stream of air flowing off of the trailing edge of the nozzle at a location downstream of the trailing edge of the nozzle such that the free stream of air flowing off of the trailing edge moves in a direction parallel to a longitudinal axis of the plug body when the supersonic jet engine is operating at the predetermined power setting and moving at the predetermined Mach speed.