Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Engineering Aspects of the Development of the Rainbow

Engineering Aspects of the Development of the Rainbow THE Rainbow is the commercial adaptation of the XF12 photographic aeroplane the Republic Aviation Corporation completed for the Army Air Forces. In 1943, the Photographic Section of the A.A.F. issued specifications for a new multiengined, longrange, highspeed, reconnaissance aeroplane to fly at very high altitudes. The required performance was so much beyond anything in existence at the time that it posed a real problem to designers of high performance aeroplanes. Republic engineers, who for years had specialized in highaltitude, highspeed pursuit planes, eagerly accepted the challenge. After exhaustive studies it was found that the performance required by the specification could only be met with a fourengined machine using Pratt and Whitney R4360 engines, supercharged to carry full military power to 40,000 ft. Other combinations would either fail in speed, or in range, or in desired rate of climb or ceiling. A proposal based on four 4360 engines was submitted to the A.A.F., and in March 1944, the Company was awarded a contract for two XF12 aircraft. The first prototype was completed in December, 1945, and made its first flight on February 4, 1946. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Engineering Aspects of the Development of the Rainbow

Aircraft Engineering and Aerospace Technology , Volume 20 (1): 19 – Jan 1, 1948

Loading next page...
 
/lp/emerald-publishing/engineering-aspects-of-the-development-of-the-rainbow-4smYHoIEMi

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb031588
Publisher site
See Article on Publisher Site

Abstract

THE Rainbow is the commercial adaptation of the XF12 photographic aeroplane the Republic Aviation Corporation completed for the Army Air Forces. In 1943, the Photographic Section of the A.A.F. issued specifications for a new multiengined, longrange, highspeed, reconnaissance aeroplane to fly at very high altitudes. The required performance was so much beyond anything in existence at the time that it posed a real problem to designers of high performance aeroplanes. Republic engineers, who for years had specialized in highaltitude, highspeed pursuit planes, eagerly accepted the challenge. After exhaustive studies it was found that the performance required by the specification could only be met with a fourengined machine using Pratt and Whitney R4360 engines, supercharged to carry full military power to 40,000 ft. Other combinations would either fail in speed, or in range, or in desired rate of climb or ceiling. A proposal based on four 4360 engines was submitted to the A.A.F., and in March 1944, the Company was awarded a contract for two XF12 aircraft. The first prototype was completed in December, 1945, and made its first flight on February 4, 1946.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Jan 1, 1948

There are no references for this article.