ideal rocket

A ideal rocket is a hypothetical rocket engine that satisfies a number of assumptions which make carrying out calculations on rocket performance much easier. Among these assumptions are that the propellant flow is completely steady, that all the reactants and products are perfectly evenly mixed, that no heat escapes through the rocket walls, and that all processes are frictionless. Although these are idealizations and simplifications they are good enough for many purposes. For example, the measured actual performance of a chemical rocket propulsion system is typically only 1–6% below that predicted for the ideal case.