| 摘要 |
<p>This invention relates to an aircraft (10) having an auxiliary power system (14), the auxiliary power system comprising: a reciprocating engine (16) having an air inlet (18) and an exhaust system (20) including an energy recovery system, in particular a turbine (26); a compressed air source, in particular the passenger cabin (12), for providing compressed air to the air inlet (18); and an electrical generator (22), which is driveably connected to the reciprocating engine (16) for providing electrical power.
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