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→Development
== Development ==
== Development ==
The [[United States Army Air Forces]] recognized the need for a very high altitude, long-range bomber late in the 1930s.<ref name=NASM>Willie, S., and Lee, R.E. "[http://www.nasm.si.edu/research/aero/aircraft/boeing_b29.htm Boeing B-29]." [http://www.nasm.si.edu/ National Air and Space Museum], Smithsonian Institution, 2004. Retrieved August 7, 2007.</ref> In February of 1940, the Army issued a specification for a bomber that could carry 2,000 [[bomb]]s at 400 mph for at least 5000 [[mile]]s.<ref name=NASM/><ref name=ace>Authors unknown. "[http://www.acepilots.com/planes/b29.html Boeing B-29 Superfortress]." ''[http://www.acepilots.com/index.html#top AcePilots.com]''. Retrieved August 8, 2007.</ref><ref name=Baugher>Baugher, Joseph. ''[http://www.csd.uwo.ca/Elevon/baugher_us/b029i.html Boeing B-29 Superfortress]''. May 29, 1998. Retrieved August 8, 2007.</ref>
The [[United States Army Air Forces]] recognized the need for a very high altitude, long-range bomber late in the 1930s.<ref name=NASM>Willie, S., and Lee, R.E. "[http://www.nasm.si.edu/research/aero/aircraft/boeing_b29.htm Boeing B-29]." [http://www.nasm.si.edu/ National Air and Space Museum], Smithsonian Institution, 2004. Retrieved August 7, 2007.</ref> In February of 1940, the Army issued a specification for a bomber that could carry 2,000 [[bomb]]s at 400 mph for at least 5000 [[mile]]s.<ref name=NASM/><ref name=ace>Authors unknown. "[http://www.acepilots.com/planes/b29.html Boeing B-29 Superfortress]." ''[http://www.acepilots.com/index.html#top AcePilots.com]''. Retrieved August 8, 2007.</ref><ref name=Baugher>Baugher, Joseph. "[http://www.csd.uwo.ca/Elevon/baugher_us/b029i.html Boeing B-29 Superfortress]." ''Joe Baugher's Encyclopedia of Military Aircraft.'' May 29, 1998. Retrieved August 8, 2007.</ref>
Four aircraft builders submitted proposals to the army. [[Boeing]], with its Model 345, won the contest.<ref name=NASM/><ref name=Boeing1>Authors unknown. "[http://www.boeing.com/history/boeing/b29.html Boeing B-29 Superfortress]." [http://www.boeing.com/ Boeing Group], product history section. Retrieved August 8, 2007.</ref>
Four aircraft builders submitted proposals to the army. [[Boeing]], with its Model 345, won the contest.<ref name=NASM/><ref name=Boeing1>Authors unknown. "[http://www.boeing.com/history/boeing/b29.html Boeing B-29 Superfortress]." [http://www.boeing.com/ Boeing Group], product history section. Retrieved August 8, 2007.</ref>