Martin XB-16
The Martin XB-16, company designation Model 145, was a projected heavy bomber designed in the United States during the 1930s. == Design and development == The XB-16 was designed to meet the United States Army Air Corps (USAAC) request for a bomber that could carry 2,500 lb (1,100 kg) of bombs 5,000 mi (8,000 km; 4,300 nmi).