8. The B-25 Mitchell Medium Bomber

Far as picking the most suitable bomber, the great wingspan of the B-18 and B-23 bombers was problematic for carrier operations. The risk of hitting the carrier’s superstructure was high, and they took up plenty of space, so the number that could be taken aboard a carrier was low. B-26s did not have those problems, but their takeoff characteristics were not well suited for a carrier deck. So Doolittle considered an untested airplane, the North American B-25 Mitchell. The twin-engine B-25 had been designed in response to a 1939 US Army Air Corps solicitation, which sought an airplane that could carry a 2400-pound bomb load for 1200 miles, at a speed of 300 miles per hour. North American Aviation came back with a plane that exceeded the bomb load and range requirements, with 3000 pounds for 1350 miles, and came close to the solicited speed at 272 miles per hour.



