Sort-of memes that are cracking you up at the moment

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chez_jay in reply to @de_Selby

the shape of the bits of the graph of load (y axis) against speed (x) that you have investigated is usually open-envelope shaped. The 'point' of the 'flap' being at the origin (no speed, no load)

I don't think this is correct. It's an envelope in the sense of boundary or perimeter of successful test points, thus defining known safe flight parameters.

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jj72 in reply to @chez_jay
Envelopes in aerodynamics from one of my old text books, still on the bookcase next to me. I’m very embarrassed that I’ve forgotten it.

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