Gas turbine engine starting mechansim

Details Gas turbine engine starting mechansim Gas turbine engine starting mechansim

1988-06-06

1989-10-03

Stout, Donald E.

Power plants

Combustion products used as motive fluid

Different fluids

60 39161, 192 42, 192 45, F02C 7275

Patent

active

048708178

ABSTRACT:
An in-flight starting mechanism for a gas turbine engine in a propeller type aircraft propulsion system wherein the propeller is driven by a free power turbine rotor rotatable independently of the gasifier rotor of the engine. The starting mechanism includes an inner race, an outer race and a plurality of rollers in pockets in the outer race. The rollers are centrifugally biased out of engagement with an inner race surface of the inner race when both the free power and gasifier rotors are driven normally in the forward or propelling direction. The pockets are evenly spaced around the inner race so that at least some of the rollers are moved by gravity against the inner race surface when the rotors are substantially stopped as occurs when the engine is shutdown in flight and the propeller feathered. Thereafter, as the propeller is unfeathered and the energy extracted from the passing airstream drives the free power turbine rotor in the forward direction, the inner race surface energizes the rollers to wedge between the inner and outer races to effect a positive connection between the rotors whereby the gasifier rotor is backdriven by the propeller to initiate engine restart.

REFERENCES:
patent: 2723531 (1955-11-01), Wosika et al.
patent: 2952973 (1960-09-01), Hall et al.
patent: 3481145 (1969-12-01), Oldfield
patent: 3722213 (1973-03-01), Carter et al.
patent: 3750782 (1973-08-01), Costantini et al.
patent: 4062185 (1977-12-01), Snow
patent: 4062186 (1977-12-01), Snow et al.
patent: 4674276 (1987-06-01), Kitaguchi

Affiliated with

Also associated with

Rating

Gas turbine engine starting mechansim does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas turbine engine starting mechansim, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas turbine engine starting mechansim will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-657741