Spark-Ignition (SI) Engine Power Output (P) Calculator

The power output (P) of an Spark Ignition (SI) in aircraft design represents the mechanical power produced by the engine. This power is used for propulsion, driving the aircraft’s propeller or jet propulsion system.

Spark Ignition (SI) Engine Power Output (P): This represents the mechanical power produced by the internal combustion engine and is typically measured in watts (W), kilowatts (kW), or horsepower (hp).The formula for calculating Spark Ignition (SI) Engine Power Output depends on the type of engine:

Ensure that the torque and angular velocity values are in consistent units for the calculation.

  • Determine Torque (Ï„): Measure or find the torque produced by the opposed engine. This can be obtained from engine performance data or testing. Torque is typically measured in newton-meters (N·m) or foot-pounds (ft·lb).
  • Determine Angular Velocity (ω): Measure or find the angular velocity of the engine’s crankshaft. Angular velocity is typically measured in radians per second (rad/s).
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