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Questions about calculating the various measures of performance of an aircraft.

8 votes
4 answers
4k views

Why aren't large, low-speed propellers widely used?

I am trying to calculate different propellers for the simple case like helicopter moving slow up like 1 m/s or staying/hanging in one place. From generic physics point of view it is more efficient to …
Zlelik's user avatar
  • 183
0 votes
0 answers
1k views

What is a good and simple software for calculating propeller thrust and required power?

My main requirements: Calculate propeller thrust with big range of the altitudes (0 - 200 km) or to have air pressure input parameter, which I can type. For example pressure for 152 km is $4.98\time …
Zlelik's user avatar
  • 183