Modern British Airship Practice

Modern British Airship Practice THE general shape of the hull is one of lower fineness ratio 5.5 than has been employed in previous rigid airships and it has no parallel portion. It approximates closely to a shape known as U 721 evolved by the National Physical Laboratory during the war and found to have a remarkably low drag coefficientlittle more than 2 per cent. of the resistance of a circular plate of the same diameter as the maximum diameter of the form. The drag coefficient of the bare hull of R 33 which is typical of the best of the older shapes in the wind tunnel is 0.0115, that of R 101 is 0.00725 with polygonal crosssection of 30 sides. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Modern British Airship Practice

Aircraft Engineering and Aerospace Technology, Volume 1 (9): 8 – Sep 1, 1929

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb029202
Publisher site
See Article on Publisher Site

Abstract

THE general shape of the hull is one of lower fineness ratio 5.5 than has been employed in previous rigid airships and it has no parallel portion. It approximates closely to a shape known as U 721 evolved by the National Physical Laboratory during the war and found to have a remarkably low drag coefficientlittle more than 2 per cent. of the resistance of a circular plate of the same diameter as the maximum diameter of the form. The drag coefficient of the bare hull of R 33 which is typical of the best of the older shapes in the wind tunnel is 0.0115, that of R 101 is 0.00725 with polygonal crosssection of 30 sides.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Sep 1, 1929

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