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  • 0 posts edited
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  • 10 votes cast
Dec
17
comment How do I figure out the totally airborne height for a given machine?
While this does answer the question, with a metaphor that's much easier to visualize, but I was after the points at which the effect is "effectively zero". Specifically, the point at which an aircraft can move over the edge of a cliff and notice no change in performance. As it turns out that appears to be extremely low, as little as a rotor length. Upvoted all the same.
Dec
17
comment How do I figure out the totally airborne height for a given machine?
I suppose all my googling was for the opposite, for air-only effect, hence I didn't find anything. I'm surprised at the lack of sourceable data for this, although I suppose that could be due to companies treating this as trade secrets.
Dec
19
comment Would an airtight box filled with air act the same way to 1 bar of water pressure as the same box vacuum-sealed at atmospheric pressure?
So the fact the forces are different do not matter, just the resultant force?
Dec
19
comment Would an airtight box filled with air act the same way to 1 bar of water pressure as the same box vacuum-sealed at atmospheric pressure?
Do you mean rather than 2-1=1 it would be 1-0=1? The forces are larger, but the resultant is the same?