Quote:
Originally Posted by drgondog
Harri - you have been very evasive about zero Velocity Thrust as well as explaining why the 'practical' approach to calculating high Hp/low velocity thrust equation doesn't work... or more to the point what is missing from the Trust discussion.
Could you please answer the questions?
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I have pointed out the relevant relations between the power and thrust regarding subject of this thread. Which were also completely wrong in your argument.
Regarding the zero speed thrust calculation, which is not the topic of this thread, I suggest that you get for example that mentioned Hamilton Standard Red book. It gives you all the information and relations needed to calculate entire speed region of an airplane. Note that there is no a single mention about the THP in entire book at least in my copy.
My demonstaration should be clear enough; thrust part is simply:
T = (n*W)/V + et
Where et is exhaust thrust. Overall similar approach can be found from Hoerner's "Fluid Dynamic Drag", chapter 14, if you are interested to learn more. The demonstration calculation is solved so that D=T at the new balance point and affecting factors are adjusted accordingly.
Given the large number of questions you have, and mostly off topic, my impression is that you try to derail the discussion out of topic after you have been pointed out to be wrong in the case of the power and thrust relation.