Vehicle main and auxiliary power units
First Claim
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1. A vehicle dual power system comprising:
- a vehicle mounted gas turbine propulsion engine including a shaft coupled compressor and turbine;
a plurality of associated ancillary units;
electric motor means arranged to drive the ancillary units and to drive the compressor of the gas turbine propulsion engine in order to initiate start-up thereof;
a source of electrical power;
switch means;
the electric motor means being connected to the source of electrical power via the switch means, the switch means being selectively operable so that the ancillary units and the compressor are driven separately or together by the electric motor means;
wherein the source of electrical power is an electrochemical fuel cell.
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Abstract
An aircraft gas turbine propulsion engine includes a compressor (10) and ancillary systems (cabin pressurizing pumps and other service) in a box 16. A fuel cell 18 powers electric motors (12) and (14) via a switch (20) for the purpose of either simultaneously driving the compressor (10) and ancillary systems, or the ancillary systems alone.
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Citations
5 Claims
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1. A vehicle dual power system comprising:
- a vehicle mounted gas turbine propulsion engine including a shaft coupled compressor and turbine;
a plurality of associated ancillary units;
electric motor means arranged to drive the ancillary units and to drive the compressor of the gas turbine propulsion engine in order to initiate start-up thereof;
a source of electrical power;
switch means;
the electric motor means being connected to the source of electrical power via the switch means, the switch means being selectively operable so that the ancillary units and the compressor are driven separately or together by the electric motor means;
wherein the source of electrical power is an electrochemical fuel cell. - View Dependent Claims (2, 3, 4, 5)
- a vehicle mounted gas turbine propulsion engine including a shaft coupled compressor and turbine;
Specification