Sporty's Quiz Hour - 20 Questions to Test Your Aviation Knowledge 

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John Opalko lol btw this is a joke right

@@memelox_1705 Nope. Lost my medical around 1985 and haven't flown since. I do keep up with it, though, and am thinking of getting a ground instructor certificate.

@@johnopalko5223 why not basic med?

@@williammickelson403 BasicMed requires me to have held a medical after July 14, 2006. My last medical expired around 1985. Besides, even if I qualified, I'd be leery of flying because of certain medical weirdnesses my body is doing. I won't even fly gliders any more (no medical required) because I don't feel confident that I'm healthy enough. Even so, between getting my certificate and having to quit, I had a good, enjoyable seven years of flying. That's more than a lot of people have.

@@johnopalko5223 oh good point thanks for reminding me

I think they should add "in level flight." At lower airspeeds, a higher AOA is required to maintain flight. Induced drag scales with AOA, which is why the largest vortices are generated by a heavy, slow and clean aircraft. Effectively, induced drag is a direct result of lift generation. Higher AOA means "more" of the lift vector is facing opposite the direction of flight, which in combination with the strengthened wingtip vortices (more delta p) results in much higher drag. At higher speeds, a lower AOA is needed. This means the pressure differential is lower, the lift vector isnt contributing as much to drag (it is almost perpendicular to flight path), and the induced drag is less. Parasitic drag scales ~ quadratically to airspeed (Result of skin friction (typically linear) and form drag (typically quadratic)) Induced drags scales ~inversely to airspeed. (Result of high AOA flight) The middle point is Vg, or best glide!

Back side of the curve.

@@cl5258 thanks for your explanation. I agree with your suggestion