Propeller pitch change mechanism

Patent · Tue Oct 13 00:00:00 EDT 1992

OSTI ID:6860017

Hora, P

This patent describes an aircraft propulsion system. It comprises: a first turbine carrying a first set of propeller blades; a second turbine carrying a second set of propeller blades; a gear system carried by the first turbine for changing pitch of the first set of propeller blades, which includes a pair of ring gears, both coaxial with the first turbine; a first set of planet gears which engage both ring gears and which induce pitch change when the planet gears rotate; a sun gear which drives the planet gears; a second set of planet gears which are carried by a planet gear carrier affixed to the second turbine and which drive the sun gear in order to change pitch by causing relative motion between the sung ear and the first turbine; and means for preventing a change in speed of the planet gear carrier from causing a change in pitch.

• Assignee: General Electric Co., Cincinnati, OH (United States)
• Patent Number(s): US 5154580; A
• Application Number: PPN: US 7-556688
• OSTI ID: 6860017
• Resource Relation: Patent File Date: 23 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIRCRAFT
PROPULSION SYSTEMS
GAS TURBINE ENGINES
DESIGN
TURBINE BLADES
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
330103* - Internal Combustion Engines- Turbine
320201 - Energy Conservation
Consumption
& Utilization- Transportation- Air & Aerospace