Counter rotation power turbine

F - Mech Eng,Light,Heat,Weapons – 02 – C

Patent

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60/138

F02C 7/00 (2006.01) F02C 3/067 (2006.01) F02K 3/072 (2006.01)

Patent

CA 1233325

COUNTER ROTATION POWER TURBINE ABSTACT OF THE DISCLOSURE A new and improved gas turbine engine including a gas generator and a power turbine is disclosed. The power turbine includes a first rotor having a plurality of first turbine blade rows extending radially outwardly therefrom, and a second rotor having a plurality of second turbine blade rows extending radially inwardly therefrom. The power turbine is supported aft of the gas generator and is effective for receiving combustion gases therefrom and expanding the gases through the first and second turbine blade rows for extracting substantially all output power therefrom for driving the first and second rotors in counterrotating directions. According to several embodiments of the invention, the power turbine is effective for driving counterrotating fans or propellers disposed either at a forward end or at an aft end of the engine.

438676

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