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This is called stall hysteresis. You have two different situations and the flow reacts differently in each of them. When increasing the AOA The flow is attached to the wing and the boundary layer is resisting the adverse pressure gradient as much as possible. At some point the flow detach from your profile and you have stalled let's say at 18°. At this point ...


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I agree with your conclusion that the wall-to-wall wing has more drag than a free-flying wing at the same angle of attack. But what is the point of this comparison? People build wings to create lift. These wings might be on airplanes, but also on helicopters, propellers, the fin keels of boats or the blades in turbo machinery. Their purpose is in all cases ...


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canards offer significant gains in performance characteristics That is news to me. So far, I have viewed the canard wing as akin to an extended spoiler which messes up the flow over the main wing. The benefit of a canard wing on the Avanti is to shift the main wing back so the main spar does not run through the cabin. Note that the canard does not have ...


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Canards are not used in general aviation simply because they have complexe interaction with the main wing which can leeds to issues with stability and being at the front of the CG their effect on flight dynamics may be highly unintuitive in some situations. Therefore you need electronic control to adapt the pilot input to the control surface in order for the ...


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Hypersonic rarified conditions means you're almost in space. You are asking can you stall? Maybe the first question should be can you fly? Correct me if I'm wrong but it seems that you are trying to apply a real life exemple to a totally different area of flight. The stall you are referring to happens in transonic flight when the shock wave appearing on the ...


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Leading edge faps also known as slats don't really create lift. The effect on lift coefficient is minor (less than 10% in general) but they help increase the stall angle of attack. As a summary, flaps creates lift, by increasing surface area and profil camber whereas slats postpone the stall and allow for higher AOA by reducing pressure drop around the ...


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