Thermal Efficiency of a Lockheed Martin F-35 Lightning II Engine Calculator

The Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, all-weather stealth multirole fighters. Like other jet-powered aircraft, the thermal efficiency is not typically expressed through a direct formula as it would be for a heat engine. However, we can discuss relevant concepts and parameters.

The thermal efficiency is expressed mathematically as:

where:

  •  is the thermal efficiency,
  •  is the thrust produced by the engine,
  •  is the jet velocity,
  • f is the mass flow rate of fuel,
  •  is the specific enthalpy of the fuel.

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