Systems and methods for supplementing a power system to achieve consistent operation at varying altitudes are disclosed herein. A hybrid power system comprising a single power source driving multiple generators may implement a power recovery turbine to drive a supercharger compressor, which may provide...http://www.google.com.au/patents/US7111462?utm_source=gb-gplus-sharePatent US7111462 - Onboard supplemental power system at varying high altitudes
