Aerospace Propulsion

All known methods which may be used to propel a vehicle in a fluid or in space are based on Newton’s second and third laws of motion (Sect. 7.9, Vol. 1). Devices such as the propeller of an airplane, the propeller of a ship and the jet propulsionJet and rocket propulsion of aircrafts and boats impart energy to a mass of fluid, called propellantPropellant, by changing its momentum fluxMomentum flux.