Recent content by Tomstudy

It might be easier to see by comparing EQ 1.b to EQ 6.8, these are located in sections 155 and 638.

The question is the validity of the equation steps shown as EQ 6.1 through 6.13, found in document sections (632) through (656).

Yes, I agree about the excessive text, but the question is about the equation 1 and 6.13 . He shows the derivation of 6.13 in preceeding equations, so using the pdf version it is possible to ignore the text and follow the equations instead. I cannot see where the trail is faulty from eq1 to...

In a C-D nozzle, when the flow velocity increases through the diverging exit section.

Have you seen this patent application? US 2017/0316133 A1 Basically from my humble understanding, he is saying the DeLaval effect can occur at less than Mach 1 at the throat, with air about 0.5 Mach. Sorry, this doc is 100 pages, here are pertinent section numbers: Standard equation EQ 1...

Thanks so much for the concise response, especially rcgldr, the responses are very much appreciated, Thank You. I see that the engine is supplying the additional energy for the lift force. Makes perfect sense since a heavily loaded plane would require more fuel to fly the same distance. I...

This is not a homework question. I am familiar with the descriptions of what creates lift. However, this idea of the source of the energy for the lift force is what I am troubled by, that is the question. Thanks for any help or direction.

I would much appreciate any critique to this line of thinking. Draw a circle around the airplane to see it as a free body diagram. The airplane engine provides horizontal force to move the plane. Force (F=ma) is a vector quantity with a horizontal direction. The wing lift is a force in the...