Differential traction drive with extreme overall torque ratios for use in a gas turbine engine driveline

摘要

A power transmission mechanism for a gas turbine engine driveline comprising a geared differential and planetary gear system adapted to receive the output power of a single shaft turbine rotor and to effect a high speed reduction and a split torque delivery path whereby a portion of the driving torque is distributed to a multiple ratio transmission mechanism through a direct mechanical path and the balance of the torque is distributed through a traction drive unit with infinitely variable ratio characteristics.