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Results tagged with drag
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user 2516
Aerodynamic drag is the fluid drag force that acts on any moving solid body in the direction of the fluid freestream flow. Part of the drag is the direct consequence of the wing generating lift.
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Is skin friction drag affected by material?
Normally, friction between surfaces is affected by the materials. Can skin friction be reduced by a low friction material like Teflon?
- 1,043
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answer
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Does waverider have much lower drag than Sears Haack body?
as a good waverider then drag can be as low as 1/6 of its weight, assuming the waverider is the best shape for hypersonic lift to drag ratio. … So is it true that the waverider has much lower drag than a SH body? …
- 1,043
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What is the drag of helicopter rotor at jet speed?
Since rotor blade seems thinner and smaller than wings, I guess when turned off, its drag should be much lower than wing.
So why doesn't that type of hybrid plane exist? … Or the drag of the rotor at the jet speed would be so high? If the drag is high, why is it high, since the rotor blade is also airfoil like wing? …
- 1,043
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About how much drag does a non-operating engine create?
Even small landing wheel should be folded inside body for better drag. So an aircraft with engines turned off will have very high drag, but I can not find any estimation on this matter. … For example, an aircraft that has L/D about 15, how about its drag if engine is removed, e.g. for better glide ratio when engine failure?
Can you estimate this drag? …
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