Oggers you really must try reading instead of just writing!
The POWER AVAILABLE from the PROPELLER is turned into two different types of power.
The first type is THP which is used to push the aircraft forward against the drag.
The second type is the power that is wasted in propelling the propwash rearwards.
So we cannot say that power available is THP.
In the most favourable conditions, that is in forward flight we have:
Power available from propeller = THP + Power wasted in propwash
But on the ground with the brakes on we have:
Power available from the propeller = Power being wasted in propwash
It isn't a difficlut concept, but to get it you need to READ what has been written. Simply waiting a few seconds then writing another post will not do it.