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Hybrid propulsion systems

  • US 8,062,081 B2
  • Filed: 12/12/2008
  • Issued: 11/22/2011
  • Est. Priority Date: 12/12/2007
  • Status: Active Grant
First Claim
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1. A propulsion system comprising:

  • at least two energy sources capable of providing propulsion and an energy management system (EMS) that controls operation of each of the at least two sources, wherein the at least two sources include at least one main propulsive engine and at least one motor-generator unit arranged in-line to drive a common output shaft and linked to a common propulsive output member, wherein the common output shaft and propulsive output member are drivable both independently by the main propulsive engine and the motor-generator unit and simultaneously by the main propulsive engine and the motor-generator unit, wherein the main propulsive engine is capable of driving the common output shaft and driving the motor-generator unit as a generator both independently and simultaneously, and wherein the energy management system dynamically shifts operation of each of the at least two sources to satisfy propulsive demands.

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