Payen PA-22 French Experimental Aircraft
Designed by Nicolas-Roland Payen, the Payen PA-22 was a French experimental aircraft. While being tested in a wind tunnel at Chalais-Meudon (Paris), the Germans invaded France and confiscated it. The German occupation forces completed the wind tunnel testing along with a flight test program.
Improvements including a variable-pitch propeller and supplementary fuel tanks were started but in 1943 an Allied air raid on the Juvisy railway yard also struck the factory, where the PA 22 was located, destroying it.