B

4-3. Creating transonic airfoils

A two-step design procedure using exact subsonic - supersonic compatibility

Lit: Sobieczky, H., Seebass, A. R.: Supercritical Airfoil and Wing Design.
Ann. Rev. Fluid Mech. 16, pp. 337-63 (1984)

 

Step 1: Basic config. and CFD with Fict. Gas

Step 2: Meth of Char. shape modification

Fict. Gas CFD, using density deficiency at M > 1 to compute shape change

Design result obtaining improved aerodynamic efficiency