Patent ID: 7654087

Claim:
A compound cycle engine comprising a gas turbine engine including an engine casing housing a compressor and a turbine section mounted for rotation about a central axis, said turbine section having a turbine shaft coaxial to the central axis located between a front of the engine casing and a rear turbine exhaust plane, the engine casing having top, bottom and lateral side extending axially between the front of the engine casing and the exhaust plane, and at least one rotary cycle topping device providing an input to said turbine section and cooperating therewith to provide shaft horsepower, the at least one rotary cycle topping device being located on one of the lateral sides of the engine casing between the front face and are rear face of the engine casing, said at least one rotary cycle topping device having an output shaft located between the top and bottom side of the engine casing at an angle comprised between about 45 degrees to about 90 degrees to the turbine shaft, and wherein a bevel gearbox mounted to the engine casing mechanically links the turbine shaft and the output shaft of the at least one rotary cycle topping device together wherein said bevel gearbox includes first and second bevel gears respectively rigidly mounted to said rotary cycle topping device output shaft and said turbine shaft, and wherein a third bevel gear is mounted to said output shaft for meshing engagement with a fourth bevel gear associated to a load to be driven.