Boeing XB-38 Flying Fortress The XB-38 was destroyed and the project was canceled, in part because the V-1710 engines were needed for other projects such as the Lockheed P-38 Lightning, Bell P-39 Airacobra, Curtiss P-40 Warhawk, North American P-51A Mustang, and Bell P-63 Kingcobra fighters. Boeing XB-38 Flying Fortress The XB-38 Flying Fortress was a single example conversion of a production B-17E Flying Fortress, testing whether the Allison V-1710 V type engine could be substituted for the standard Wright R-1820 radial engine during early World War II. The XB-38 was the result of a modification project undertaken by Boeing and Vega (a subsidiary of
RAF Bomber Command aircrew of World War II Airmen's memoirs mention flying over target areas below which were like "Dante's Inferno", with acres of red and orange flame punctuated by percussions shock waves as bombs exploded and, while sympathy with anybody on the ground is sometimes expressed, mention is usually made of the prior German Blitz bombing of Coventry and London. Wartime reports and aircrew memoirs make regular mention of intense brightly coloured violent explosions within the bomber stream which often showered clouds of sparks which aircrew referred to as "scarecrows" and believed were a type of pyrotechnic shell designed to scare aircrew. Post-war assessment confirmed that these