XP-42 rear view
XP-42 left side view
XP-42 on the ground
XP-42 in flight
XP-42 warming up its engine
XP-42 38-4 during test by NACA
XP-42 38-4 NACA long nose
XP-42 38-4 painted in washable camo used in war games
Curtiss (Model 75S) XP-42 Ohio 1939
XP-42 over Ohio 1939
To improve the aerodynamics of the air-cooled piston engines, the fourth production P-36A (serial number 38-004) was equipped with the long streamlined fairing of a liquid-cooled engine. Twelve different designs were tested with little success – although the aircraft was faster than a regular P-36A, the problems with cooling the engine could not be solved. Since the new P-40 was faster, the project was suspended. At the end of its service time the only XP-42 was given a fully movable tailplane to study this configuration of the elevator.
Source:
Peter M. Bowers: Forgotten Fighters and Experimental Aircraft U.S. Army 1918-1941 2