Compact high power turbopump for a rocket engine

Details Compact high power turbopump for a rocket engine Compact high power turbopump for a rocket engine

1993-11-24

1995-04-04

Thorpe, Timothy S.

Pumps

Motor driven

Fluid motor

F04B 1700

Patent

active

054031656

ABSTRACT:
A compact high power turbopump for feeding liquid propellant to a rocket engine comprises: a short, large diameter shaft that is capable of rotating; a single impeller providing a large pressure rise at a large flow rate, the impeller being mounted on the short shaft so as to constitute a single pump stage; a ball bearing for supporting the short shaft in a small section zone thereof situated in front of the impeller; a fluid bearing dimensioned so as to withstand a high speed of rotation N and having a large diameter D, the fluid bearing serving to support the short shaft in a large section zone situated behind the impeller; a turbine cantilevered out on the short shaft behind the fluid bearing; an inducer of the high pressure type disposed upstream from the ball bearing on the suction pipe; and metal casing elements for the pump and for the turbine that are of simplified shape.

REFERENCES:
patent: 1385115 (1921-07-01), Cone
patent: 2956502 (1960-10-01), Glaser, et al.
patent: 3105631 (1963-10-01), Hanny
patent: 3734649 (1973-05-01), Sandy, Jr.
patent: 4370106 (1983-01-01), Lauterbach
patent: 4619590 (1986-10-01), Johnson
"Over 40 Years of M.A.N. Exhaust Gas Turbochargers", Diesel & Gas Turbine Worldwide, Nov., 1982. pp.6-13.
"HM60 Cryogenic Rocket Engine for Future European Launchers", M. F. Pouliquen, Journal of Spacecraft and Rockets, vol. 21, No. 4, Aug. 1, 1984, New York, pp. 346-353.

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