In flight mechanics, Propulsion Net Thrust is the resultant force generated by an aircraft’s propulsion system, representing the difference between the thrust produced by the engines and the aerodynamic drag acting against the forward motion of the aircraft. A positive net thrust indicates excess thrust beyond aerodynamic drag, contributing to acceleration, while negative net thrust suggests a deficit, potentially leading to deceleration or descent. The formula to calculate Propulsion net thrust as follows:
Where:
- ma is the air mass flow rate in kg/s.
- Vj is the velocity of jet in m/s
- Vf is the flight velocity in m/s