Republic P-47B Thunderbolt: The Republic P-47B Thunderbolt was one of the great fighters used by the U. S. Army Air Force in World War II, and crews praised its ability to absorb punishment. This P-47B was used by NACA engineers to study the horizontal tail loads experienced by a fighter during abrupt maneuvers.

P-47B Thunderbolt

Curtiss P-40E Warhawk: The Curtiss P-40E Warhawk was powered by a liquid-cooled Allison V-1710 engine. Used for testing modifications to the tail, this Warhawk was used by the NACA at Langley from March to July 1942.