A number of advanced follow-on to the Heinkel 162 A were considered. This aircraft was also used as the basis of possible designs powered by pulsejets engines, one concept using a single Argus As 044 engine with 500 Kgs thrust ( He 162 A-11 ) and other using twin Argus As 014 engines with 332 Kgs. thrust each ( He 162 A-10 ) However, neither the Luftwaffe nor Heinkel engineers were at all enthusiastic about using pulsejets, as they had poor high-altitude performance, bad fuel economy and high levels of vibration. As far as know, only a prototype of He 162 A-10 flew in March 1945. Other He 162 variants under consideration included the Heinkel He 162 C, with swept-back wings and "vee" or " butterfly" tail assembly, and the He 162 D, with similar configuration but forward swept-wing.