"Static Thrust of Propellers
The thrust of a propeller is not constant for different flight speeds. Reducing the inflow velocity generally increases the thrust. A reduction of the aircraft speed down to zero tends to increase the thrust even further, but often a rapid loss of thrust can be observed in this regime."
(Included by Simplex - the OP, in his post #80)
I was not going to get involved in this long and largely impossible thread, so I shall just say that if the OP really believes that propellor thrust does not vary with speed that is his/her own problem and we may as well give up trying to use engineering principles to counter his/her assertions.
( Alan Lupton above)
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