ENGINE SYSTEM FOR VERTICAL AND SHORT TAKE OFF AND LANDING (V/STOL) AIRCRAFT

摘要

An engine system with a multi-gas-generator, tip-turbine driven lift fan with pressurized air circulation control for use on vertical and short-take-off and landing (V/STOL) aircraft is disclosed. Gas generators located around the periphery of the fan drive the fan through action on a fan blade-tip turbine or provide compressed gas (hot or cold) to circulation control devices. Variable pitch fan blades improve part-power cruise performance. Enclosed in a nacelle, the engine employs circulation control to enhance V/STOL performance. In some embodiments, a core cruise turbine gas generator mounted in the center of the fan duct powers the fan during cruise mode. In some hybrid gas and electric power embodiments, the core cruise gas generator is replaced by an electric motor that draws power from a battery in the fuselage. The battery may be charged by an electric generator driven by a gas generator around the periphery of the fan.

主权项

1. An engine system for vertical takeoff and landing (VTOL) aircraft comprising:
a fan comprising a plurality of blades; and at least one gas generator disposed relative to the plurality of blades so that exhaust gas from the at least one gas generator impinges on the plurality of blades to generate rotational energy.