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The B-29 was designed as what the Army Air Forces called a "Hemisphere Defense Weapon." The 1940 specifications called for an aircraft capable of carrying 20,000 pounds of bombs for 5,333 miles at a speed of 400 miles an hour. While it did not meet all these goals the B-29 still carried more bombs, higher, farther and faster than any other bomber of World War II. It also introduced pressurized crew compartments to military aircraft, which allowed the crews to forego the heavy and awkward cold weather flying clothes that crews of other planes, were forced to wear. Over 4,000 Super Fortresses were built and many continued to serve the U.S. Air Force into the early 1950s as bombers, reconnaissance planes, and as refueling tankers.
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| Wingspan |
141 ft 3 in |
| Length |
99 ft |
| Height |
29 ft 7 in |
| Weight |
141,100 lbs (loaded) |
| Maximum Speed |
358 mph |
| Service Ceiling |
31,850 ft |
| Range |
4,100 miles |
| Engines |
4 Wright R-3350-23 radial, 2,200 horsepower each |
| Crew |
11 |
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