Inertial speed control coupling for a gas turbine engine

Patent · Tue Jun 23 00:00:00 EDT 1987

OSTI ID:6298222

Kitaguchi, S S

This patent describes a gas turbine engine having a gas generator section for producing a flow of high energy gases and a free power turbine section driven by the gases for rotatably driving an engine load, a speed control device, comprising: an epicyclic gear assembly having a first gear, a second gear, an annular array of differential gears meshed between the first and second gears, and a cage supporting the differential gears for rotation about their individual axes and for orbital motion about the rotational axes; the first gear is connected to and rotatably driven by the free power turbine section; one of the second gear and cage is connected to and rotatably driven by the gas generator section; the other of the second gear and cage includes an inertial mass and is cooperatively driven by one of the second gear and cage and by first gear at a substantially constant speed during steady-state engine operation. The inertial mass has a rotational inertia substantially greater than the rotational inertia of the free power turbine section to couple the free power turbine section to the gas generator section. This temporarily resists rotational speed change of the free power turbine section during a transient load condition.

• Assignee: Garrett Corp., Los Angeles, CA
• Patent Number(s): US 4674276
• OSTI ID: 6298222
• Resource Relation: Patent File Date: Filed date 11 Jul 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
GAS TURBINE ENGINES
SPEED REGULATORS
GAS FLOW
GAS GENERATORS
GAS TURBINES
GEARS
MASS
MOMENT OF INERTIA
ROTATION
STEADY-STATE CONDITIONS
TRANSIENTS
VELOCITY
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MACHINERY
MOTION
TURBINES
TURBOMACHINERY
330103* - Internal Combustion Engines- Turbine