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Thrust force-compensating apparatus with improved hydraulic pressure-responsive balance mechanism

  • US 5,102,295 A
  • Filed: 04/03/1990
  • Issued: 04/07/1992
  • Est. Priority Date: 04/03/1990
  • Status: Expired due to Fees
First Claim
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1. In a gas turbine engine having relatively rotatable first and second structures, an axial thrust force-compensating apparatus comprising:

  • (a) a first annular part mounted to said first engine structure and having an annular end surface;

    (b) a second annular part mounted to said second engine structure and having an annular end surface which opposes and faces toward said annular end surface of said first annular part; and

    (c) primary hydraulic pressure balance means defined in said first annular part for providing separate outer and inner fluid flows through said first part to respective outer and inner regions between said end surfaces of said first and second parts at respective first and second pressures responsive to the amount of separation existing between said end surfaces at said regions, said separate fluid flows at said first and second pressures producing a film of fluid flowing between and in contact with said respective end surfaces which generates primary compensating moment forces acting on said end surfaces to maintain said end surfaces in generally parallel relationship.

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