lifting theory. why we can fly. simplified!

[Dennis Burke]

For newly-minted SSI pilots, the classic 13 chapters from 1955 and the enthusiasm of Alexander Lippisch.

https://m.youtube.com/watch?v=zmn7bJvCDn4&list=PL7d8BMotflM0QXn2EPyvEJ4GxYFl32qCA&index=10

The simulation method of wind tunnel smoke lines is irreplaceable, esp see Chap 10.

just imagine if the venerable 2-33 design would have thrown in a few of these drag-reducing techniques….known for years before wingletts were intro’d to GA.  The 23:1 could have been ???

[Dennis Burke]

Go 7 minutes into Chap 10, where airfoil is introduced

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