Author : N. Matheson
Publisher :
ISBN 13 : 9780642078766
Total Pages : 21 pages
Book Rating : 4.0/5 (787 download)
Book Synopsis Atmospheric and Pressurized Low Speed Wind Tunnel Performance and Cost Comparisons by : N. Matheson
Download or read book Atmospheric and Pressurized Low Speed Wind Tunnel Performance and Cost Comparisons written by N. Matheson and published by . This book was released on 1984 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Australian report, the performance of a series of low-speed wind tunnels designed to operate at various maximum pressures ranging from 2 to 5 atmospheres is estimated and compared with the performance of a similar atmospheric tunnel on the basis of capital cost and power input. The choice of the design of a new tunnel is usually influenced by cost and power considerations and it is important to provide the most capable design and to maximize performance within given limits of these variables. Pressurization offers a major advantage in allowing Reynolds number (RN) and Mach number (MN) effects to be investigated separately. This can be particularly important for tests of modern aircraft configurations operating at high lift. For the same capital cost and consumption, pressurization allows the maximum RN and MN to be increased substantially, but the working section is much smaller. This may make it difficult to satisfy some test requirements particularly for V/STOL aircraft. Models for a pressurized tunnel are also more complex and may be more costly because they must withstand much higher aerodynamic loads. To illustrate the effects of tunnel pressurization the analysis is applied to a tandem section low-speed tunnel previously suggested as suitable for future Australian test requirements. Keywords include: Subsonic wind tunnels, and Model tests.
