Thinking about this some more, I take that back. It's not just an expansion
process, it's one where thermal energy is transferred although it's still
fundamentally the pressure producing the force, the actual energy is
probably thermal.
Troy
Just a minor bugbear of mine - a nozzle converts static pressure into worknot
thermal energy. The process is essentially adiabatic. As you expand gasesyou
don't lose heat within the exhaust, the gas essentially just has thecapacity to
hold more thermal energy as it expands hence why its temperature dropscoefficient
accordingly. It's also why there's no thermal elements to the thrust
equation.
Troy
