Douglas XB-43 Jetmaster

The Douglas XB-43 Jetmaster was an American 1940s jet-powered prototype bomber, a development of the XB-42 in which the piston engines were replaced by two General Electric J35 turbojets of 4,000 lbf thrust each. Almost two years were needed to ready the aircraft for flight because of delays in obtaining the J35 engines, and America first turbojet bomber finally flew from Muroc Army Air Base on 17 May 1946. Despite being the first American jet bomber to fly, it suffered stability issues and the design did not enter production, as the Army was already moving ahead with the XB-45 Tornado, designed from the outset for turbojet power.