The Convair proposal, coded "FZP-110", was a radical two-place delta wing bomber powered by three General Electric J53 turbojet engines. The performance estimates included a speed and a range. A key feature of the design was to store consumables, both weaponry and most of the fuel, within a large external pod, which enabled a smaller fuselage. In January 1951, Convair submitted the FZP-110 proposal, which was received later than other competing bids. During December 1951, a revised "FZP-016" proposal was submitted, which deleted the third engine on the tail, increased the remaining two engines' thrust, and added a third crew member to operate defensive systems.