Boeing XP3B

The Boeing XP3B-1, company Model 466, was a proposed patrol aircraft developed by Boeing for the United States Navy in the late 1940s. It was planned to be powered by two Allison T40 turboprops driving contra-rotating propellers, and it used tandem landing gear. The project was cancelled before any aircraft were built. The specification given for the design lists a length of about 33.2 metres, a wingspan of 38 metres, a wing area of 1,400 square feet, an empty weight of 29,937 kilograms and a gross weight of 57,606 kilograms, with two Allison T40-A-2 turboprops of 5,200 shaft horsepower each driving six-bladed 17-foot propellers, a maximum speed of 731 kilometres per hour and a range of about 8,328 kilometres.