Gas turbine engine having low cost speed reduction drive

Details Gas turbine engine having low cost speed reduction drive Gas turbine engine having low cost speed reduction drive

1992-02-19

1993-08-24

Bertsch, Richard A.

Power plants

Reaction motor

Interrelated reaction motors

60 392, 415229, 475196, F02K 302

Patent

active

052378179

ABSTRACT:
The cost and bulk of a speed reducing transmission required to provide low speed rotational power from a gas turbine engine is avoided by employing bearings (16, 18) jornalling a high speed shaft (12) of the engine with a power takeoff in the form of a tubular shaft (62) having bearing receiving and retaining openings (82) to act as a bearing cage for bearing elements (64, 66) disposed between inner and outer bearing races (68, 70). Upon rotation of the high speed shaft (12), the bearing elements (64, 66) will move in an epicyclic fashion thereby driving the tubular shaft (62) at a reduced rotational rate allowing it to drive loads such as a dynamoelectric machine (90) or a ducted fan (48) at rotational speeds less than the rotational speed of the high speed shaft (12).

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