Method and apparatus for trim balancing a gas turbine engine

Details Method and apparatus for trim balancing a gas turbine engine Method and apparatus for trim balancing a gas turbine engine

1993-05-13

1996-08-13

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

Self-shifting or selectively adjustable mass

415201, F01D 2504

Patent

active

055450105

ABSTRACT:
Trim balancing of rotating components in the past has increased manufacturing cost. In many past applications, the time and energy required to trim balance rotating components required partial disassembly of an outer case or structure member. The present trim balancing system allows the gas turbine engine to be balanced with the outer case in situ. Access to a rotating component from the exterior of the case is made possible by a compressor air flow path and a pair of holes. The balancing can be accomplished by adding or removing weights or plugs to a band assembled on the rotating component.

REFERENCES:
patent: 3945760 (1976-03-01), Miller
patent: 4842485 (1989-06-01), Barber

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