aerohead: You might be interested in this: Doug McLean | Common Misconceptions in Aerodynamics
youtu.be/QKCK4lJLQHU?t=2822
I sat through 47 minutes of this but he skipped the parts I was waiting for, but he buzzes though the slides in the last minute or so. 'Boundary Layer Separation in 3D' and 'Base drag and Hoerner's jet pump'.
He never gets to the jet pump. searching on the term leads to
enginehistory.org/: Waste Heat Utilization in High Output Aircraft Piston Engines by Robert J. Raymond
An interesting article, but it suggests the Hoerner jet pump is synonymous with the Meredith Effect.