Editing Lockheed XF-90 (section)

==Testing and evaluation==
[[File:Lockheed XF-90 parked.jpg|right|thumb|The first XF-90 prototype.]]
[[File:Lockheed XF-90 (46-688) in Yucca Flat.jpg|thumb|Remains of the second XF-90 prototype.]]
The XF-90 was the first USAF jet with an afterburner and the first Lockheed jet to fly supersonic, albeit in a dive. It also incorporated an unusual vertical stabilizer that could be moved fore and aft for horizontal stabilizer adjustment. Partly because Lockheed's design proved underpowered, it placed second to McDonnell's [[XF-88 Voodoo]] which won the production contract in September 1950, before the penetration fighter project was abandoned altogether.

Upon Lockheed losing the production contract, the two prototypes were retired to other testing roles. The first aircraft (''46-687'') was shipped to the [[National Advisory Committee on Aeronautics|NACA]] Laboratory in [[Cleveland, Ohio]] in 1953 for structural tests. It was no longer flyable, and its extremely strong airframe was tested to destruction. The other (''46-688'') survived three atomic blasts at [[Frenchman Flat]] within the [[Nevada Test Site]] in 1952.<ref>{{cite web|title=Here's All That Remains After You Drop Nukes on a Fighter Jet|date=November 1, 2021|author=Benny Kirk|website=[[Autoevolution]]|url=https://www.autoevolution.com/news/heres-all-that-remains-after-you-drop-nukes-on-a-fighter-jet-173117.html}}</ref>