X353-5b Propulsion System Specification

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X353-5b Propulsion System Specification

This specification covers the characteristics of the X353-5B convertible V/STOL propulsion system intended for use in a piloted flight research airplane. The General Electric X353-5B Engine is a high lift-weight ratio convertible engine for turbojet operation and augmented lift operation. The basic X353-5B Engine comprises a turbojet engine modified for non-reheat operation, a tip-turbine lift fan augmenting turbojet thrust for V/STOL lift and propulsive thrusts, a gas diverter valve for selecting engine operating mode, and associated engine controls and accessories. The two part scroll on each lift fan permits incorporation of the X353-5B into an airplane powerplant configuration comprising two (2) basic X353-5B convertible engines pneumatically coupled such that each turbojet provides half of the required driving power for each of the lift fans. Rotors of the two lift fans rotate in opposite directions to minimize gyroscopic relations. All performance figures, weights, quantities, etc., in this specification are given for one X353-5B (one turbojet engine, one fan, one diverter valve) unless specifically stated otherwise.