Theoretical Study of Conditions Limiting V/STOL Testing in Wind Tunnels with Solid Floor

Theoretical Study of Conditions Limiting V/STOL Testing in Wind Tunnels with Solid Floor PDF

Author: Harry H. Heyson

Publisher:

Published: 1970

Total Pages: 340

ISBN-13:

DOWNLOAD EBOOK →

Under sufficiently large wake deflections, the forward portion of the wake is found to flow forward along the floor leading to a vortex pattern which results in Rae's limits (Journal of Aircraft, May-June 1967). Although wind-tunnel data cannot normally be corrected successfully beyond these limits, it may be possible to obtain ground-effect data for conditions more severe than those implied by Rae.

Low-Speed Wind Tunnel Testing

Low-Speed Wind Tunnel Testing PDF

Author: Jewel B. Barlow

Publisher: John Wiley & Sons

Published: 1999-02-22

Total Pages: 738

ISBN-13: 0471557749

DOWNLOAD EBOOK →

A brand-new edition of the classic guide on low-speed wind tunnel testing While great advances in theoretical and computational methods have been made in recent years, low-speed wind tunnel testing remains essential for obtaining the full range of data needed to guide detailed design decisions for many practical engineering problems. This long-awaited Third Edition of William H. Rae, Jr.'s landmark reference brings together essential information on all aspects of low-speed wind tunnel design, analysis, testing, and instrumentation in one easy-to-use resource. Written by authors who are among the most respected wind tunnel engineers in the world, this edition has been updated to address current topics and applications, and includes coverage of digital electronics, new instrumentation, video and photographic methods, pressure-sensitive paint, and liquid crystal-based measurement methods. The book is organized for quick access to topics of interest, and examines basic test techniques and objectives of modeling and testing aircraft designs in low-speed wind tunnels, as well as applications to fluid motion analysis, automobiles, marine vessels, buildings, bridges, and other structures subject to wind loading. Supplemented with real-world examples throughout, Low-Speed Wind Tunnel Testing, Third Edition is an indispensable resource for aerospace engineering students and professionals, engineers and researchers in the automotive industries, wind tunnel designers, architects, and others who need to get the most from low-speed wind tunnel technology and experiments in their work.

Wind Tunnel Design for Testing V/STOL Aircraft in Transition Flight

Wind Tunnel Design for Testing V/STOL Aircraft in Transition Flight PDF

Author: Richard A. Kroeger

Publisher:

Published: 1972

Total Pages: 103

ISBN-13:

DOWNLOAD EBOOK →

Wind tunnels have afforded the best potential for studying regions of aerodynamic uniqueness of V/STOL aircraft, but they have been of limited value because of the magnitude of the flow interference they introduce. A new wind tunnel concept is described for covering the spectrum of transition testing from hover throughout wing sustained flight. The wall interference corrections are physically produced by the structure of the wall. A small scale tunnel was designed, constructed, and tested employing this concept. Data from a small rotor model were obtained in the new tunnel and a large conventional one as a basis for comparative evaluation. (Author).