Radial vs in-line engines

[Crumpp]

Certainly. Send me a PM with your email and I will get you a copy.

You do realize it contradicts almost everything you posted in your last post about the P51.

Particularly:

they took a great deal of care in the design of the radiator system on the P-51

It surely was an efficient and revolutionary system

Supersonic aerodynamics and compressibility were still pretty new and not well understood at the time the P51's radiator was designed. Therefore, they did not correctly slope the intake for normal shock formation. The slope was too steep and separation occurred.

That means high drag. This is confirmed in both later NACA wind tunnel testing and RAE flight testing. It is highly unlikely the P-51 series achieved any of its designers goals of laminar flow or Meredith effect. Interesting enough, the B-24 with the Davis wing in a complete accident of fate, did achieve laminar flow!