Lu,
I refer you again to the chapters in "The Jet Engine" by Rolls-Royce. Are they wrong?
They also seem to think that they know something about rockets, although they don't seem to have the knowledge that you do.
Both GE and Rolls-Royce books refer specifically to the mass flow and acceleration.
Perhaps you could argue that as the fluid naturally goes from an area of high pressure to one of low pressure then it accelerates. You can calculate the thrust or drag of an aircraft engine in each section (inlet, compressor etc), but the overall engine works on the acceleration of gas. Even turbine stages rotate not only by changing the direction of flow, but also by presenting a converging path to the gas which accelerates the gas and forces the rotor in the opposite direction.
I don't know your experience and you don't know mine, but like I say, read the book, and then tell me where you agree or it's wrong.
