engine mounting schemes helicopters

The engine mount should take the load coming to its crankcase (torque M, axial and radial components of the weight G and the inertial forces), have temperature and installation of expansion joints and shock absorbers. CMP engine mounts are designed for a particular type of engine, taking into account operational requirements (access to all components and elements of the engine mounting, minimum labor input of assembly and disassembly of the engine).

The supports are installed vibration damper in the form of rubber sleeves 5. In connection with the change in the volume zone B-B when it is heated when the engine is started, one of the supports must be provided a linear equalizer, allowing longitudinal movement of the finger of the mount casing relative to its support on the fuselage.

The rear engine support can be placed on a spherical centering joint mounted on the GR crankcase. The outer part of the spherical joint is attached to a cantilever tube attached to the engine crankcase. A shaft passes inside the pipe, which connects the free turbine of the engine through a toothed clutch with the MCH GR. The pivot bearing absorbs axial and lateral forces from the engine. The elements of the front support receive the torque from the engine, a part of the longitudinal and lateral loads from the engine weight.