27 votes

Is there a valid case to do the imposible turn(180)?

Generally crashing into inhospitable terrain while under control is preferable to a vertical spin into the ground short of flat terrain, which guarantees a bad result. In any case, it usually isn't ...
John K's user avatar
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3 votes

Is there a valid case to do the imposible turn(180)?

For the sake of simplicity let's assume that the impossible turn in this case is in fact fully impossible, so no borderline cases are considered. The actual choice in this case would be "where do ...
Jpe61's user avatar
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2 votes
Accepted

Comparing a Flight In Turbulent Conditions At Va And Vb

The requirements for VA and VB can be found in Code of Federal Regulations, more precicely in Title 14, Chapter I, Subchapter C, Part 25, Subpart C, Flight Maneuver and Gust Conditions ยง 25.335 (c) ...
Jpe61's user avatar
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2 votes

Lift distribution of a swept wing with twist, dihedral, taper

The easiest way (I believe) will be to run a simple VLM aerodynamic analysis. For this, I suggest you use OpenVSP and VSPAERO. Dihedral won't change the lift distribution in a significant way (in ...
Rob McDonald's user avatar
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2 votes
Accepted

How much fuel can be saved in a half full of passengers plane?

The most can be saved with short range planes on long trips. When passenger load is around 10% (as it is for very long range airliners), reducing that to 5% will not make much of a difference. But we ...
Peter Kämpf's user avatar
1 vote

How much fuel can be saved in a half full of passengers plane?

The answer is heavily dependent on the exact airliner. As a general rule, the practical answer is "not enough". Reducing the airliner's weight saves fuel during takeoff (slightly), climb (...
Therac's user avatar
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