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Delta wings use a strong vortex flow to keep flow attached even at high AoA (30°).

My goal is make high aspect wing with highest CL and stall angle, and I don't care about drag.

Can we use big angled vertical strakes (at the place where regular vortex generators would be placed) at high aspect wing that will produce strong vortex-flow to achieve high lift at high AoA?

Strakes will produce lots of drag, but will flow separate at higher AoA then normal wing?

By "big strakes", I mean, for example, 25cm high by 35cm long.

If yes, why does vortex flow separate later then normal (laminar and turbulent) flow?

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  • $\begingroup$ you've tagged it with [vortex-generators], so why are small ones not good? $\endgroup$
    – user14897
    Apr 16 at 10:18
  • $\begingroup$ @ymb1 No, strakes are not VGs.. $\endgroup$
    – Jurgen M
    Apr 16 at 11:52
  • $\begingroup$ OK, but why are the small ones (VGs) not good for what you're asking? Feel free to explain in the question body. $\endgroup$
    – user14897
    Apr 16 at 11:56
  • $\begingroup$ @ymb1 Because VGs cant handle high AoA like 30° $\endgroup$
    – Jurgen M
    Apr 16 at 12:10
  • $\begingroup$ Instead of "high aspect," do you mean "low aspect ratio"? (Please answer by editing your question, not by commenting here, because this is a Q&A site, not a forum.) $\endgroup$ Apr 16 at 16:11

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