Patent ID: 8882027
Filing Date: 2014-11-11
Classification: B64C,B64D

Abstract:
1. A power plant provided with a piston engine driving a conventional gearbox dimensioned for a turbine engine, and an aircraft rotor driven by said power plant, said piston engine having a first row of pistons presenting an angle (α) with a second row of pistons to define a space therebetween, wherein the power plant includes a flywheel and a torsion shaft set into motion by said pistons to drive said conventional gearbox, said torsion shaft being arranged within the space between the first row of pistons and the second row of pistons, said torsion shaft driving the flywheel; wherein the powerplant includes adjustment means for adjusting the relative speed of rotation between a first speed of rotation (V wherein the adjustment means comprises a speed reducer arranged upstream from said torsion shaft, the speed reduced being mechanically engaged with a crank shaft of said piston engine and said torsion shaft; wherein the adjustment means comprises a speed multiplier upstream from said flywheel to increase the speed V wherein the crankshaft and torsion shaft each comprise a longitudinal axis passing through the center of and extending along a length of each shaft; and wherein the longitudinal axes of the crankshaft and torsion shaft are parallel and both the crankshaft and torsion shaft extend between a first and a second end of said piston engine.