JET NOZZLE

• US 3,704,829 A
• Filed: 07/21/1971
• Issued: 12/05/1972
• Est. Priority Date: 07/31/1970
• Status: Expired due to Term

• Current Assignee: John Matthew Hall
• Original Assignee: John Matthew Hall
• Inventors: Hall, John Matthew
• Primary Examiner(s): Wood, Jr., M. Henson
• Assistant Examiner(s): Culp, Jr., Thomas C.
• Application Number:
  US05/164,794
• Time in Patent Office: 503 Days
• Field of Search: 239/265.19,265.27,265.33,265.35,265.37,265.39 60/228,230
• US Class Current: 239/265.35
• CPC Class Codes: F02K 1/006 within one plane only

Abstract

A jet nozzle for thrust vectoring has a jet pipe, at the downstream end of which are a plurality of part spherical segments which are movable from a nested position around the jet pipe into a position in which they deflect the stream of exhaust gases from the jet pipe. The movement is effected by a chain which is pushed and pulled by a linear actuator, the chain links having abutments thereon which limit the amount of flexing of the chain to a radius determined by movement of the outermost segment.

Claims

1. A jet nozzle for a gas turbine engine comprising a jet pipe for the flow of combustion products of the engine, a plurality of hollow sphere segments of different radius connected to a common pivot on the jet pipe and capable of being moved between a position in which they are nested around the downstream end of the jet pipe and a position in which they are extended to form a curved extension of the jet pipe for the purpose of diverting the jet flow from the direction determined by the jet pipe itself, a chain connected between the outermost of the segments, and a linear actuator fixedly supported in relation to the jet pipe so that when the chain is pushed by the actuator the segments are moved from the nested to the extended position and vice versa, the chain comprising links including abutments limiting the flexing of the chain away from the straight to a radius determined by the movement of said outermost segment.