Patent ID: 8037686

Claim:
A constant-power, variable-speed gas turbine assembly wherein the assembly converts a portion of an energy of a high pressure gas into mechanical spinning shaft power, maintains near constant power output over a specified turbine rotational speed range, eliminates a need for a separate transmission and with means for magnetically transferring a torque of a turbine contained in a high pressure turbine housing to a region with a different pressure comprising: (a) a gas nozzle for receiving low-velocity, high-pressure gas and discharging high-velocity, low-pressure gas; (b) a first turbine blade mounted on a shaft downstream of the nozzle for receiving gas from the nozzle and discharging the gas at a lower velocity thereby generating a first impulse which imparts torque to the shaft; (c) a stator mounted in the gas turbine assembly downstream from the first turbine blade for changing the direction of gas flow; (d) a second turbine blade mounted on the shaft for receiving the gas flow from the stator when the gas velocity is greater than a velocity of the second turbine blade and reducing the gas velocity thereof generating a second torque producing impulse and thereby maintaining near constant torque on the shaft; (e) an internal discharge which receives and discharges gas from the stator when the velocity of the gas is less than the velocity of the second turbine blade; (f) a high-pressure turbine housing enclosing the gas turbine assembly; (g) a nonmagnetic and dielectric window in the high pressure turbine housing; (h) means attached to spinning elements of the turbine for inducing a magnetic field positioned in close proximity to the nonmagnetic and dielectric window; and (i) means for coupling a magnet field attached to a turbine spinning magnet to a shaft which is external to the high-pressure containment turbine structure.