Though not the first aircraft to employ the oblique wing or “scissor” design concept, the first was the German Blohm & Voss P 202 in 1942, the jet powered NASA AD-1 was the first aircraft to successfully demonstrate the concept in a test programme of 79 flights from 1979 to 1982. Dubbed the strangest plane to ever fly, the wing would be pivoted up to 60 degrees when flying at high speed to reduce drag, thus allowing increased speed and longer range owing to reduced fuel consumption. Reportedly it had difficult flying characteristics when the wing was fully swept.