초록 ▼

A power takeoff for an unducted fan gas turbine engine having first and second counterrotating coaxial rotors coupled respectively to first and second propellers. The rotors and propellers are oriented for rotation about a longitudinal axis of the engine. A gear is coupled to each of the rotors for

A power takeoff for an unducted fan gas turbine engine having first and second counterrotating coaxial rotors coupled respectively to first and second propellers. The rotors and propellers are oriented for rotation about a longitudinal axis of the engine. A gear is coupled to each of the rotors for rotation therewith and arranged to provide rotational motion about an axis transverse to the engine axis. A shaft is coupled to the gear for rotation about the transverse axis. Each of the propellers includes a plurality of propeller blades, each of the blades is rotatable about a corresponding blade axis, and a control is coupled to the blades for varying the pitch thereof whereby power is selectively distributed between the propellers and the power takeoff. The power takeoff may include a propeller coupled to the shaft for developing thrust substantially transverse to the engine axis and/or a pump, compressor, or generator to supply fluids or electric power to other apparatus.

대표청구항 ▼

In an unducted fan gas turbine engine including first and second coaxially disposed rotors oriented for rotation about a longitudinal engine axis, a plurality of first propeller blades coupled to the first rotor and a plurality of second propeller blades coupled to the second rotor, the propeller bl

In an unducted fan gas turbine engine including first and second coaxially disposed rotors oriented for rotation about a longitudinal engine axis, a plurality of first propeller blades coupled to the first rotor and a plurality of second propeller blades coupled to the second rotor, the propeller blades providing thrust along the longitudinal axis, apparatus for converting power from the rotors into thrust transverse to the longitudinal axis of the engine comprising: gear means coupled to the first and second rotors for providing power transverse to the longitudinal axis; and thrust means coupled to a said gear means for converting the transverse power into a thrust transverse to the longitudinal axis.