Pulsed Detonation Engines (PDEs) are a type of propulsion system that operates on the detonation principle. They use a repetitive cycle of fuel injection, ignition, and detonation to generate thrust. In the context of a Pulsed Detonation Engine, the “nozzle exit” refers to the point where the high-speed combustion products exit the engine.
The total energy per unit mass at the nozzle exit can be expressed as the sum of the enthalpy and kinetic energy of the combustion products.
The total energy () at the nozzle exit can be expressed as:
where,
- E is the Total Energy, i.e sum of kinetic and potential energy
- Â is the static enthalpy at the nozzle exit,
- Â is the velocity of the exhaust gases relative to the reference frame of the exhaust gases