Design and construction of a sting-type angle-of-attack mechanism for a low speed wind tunnel PDF Download
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Author: John Edward Hoffschwelle
Publisher:
ISBN:
Category : Wind tunnels
Languages : en
Pages : 148
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Book Description
Author: John Edward Hoffschwelle
Publisher:
ISBN:
Category : Wind tunnels
Languages : en
Pages : 148
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Book Description
Author: Tommy Jack Kubler
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 286
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Book Description
A sting mounting system designed for high angle of attack (AOA) testing has been developed for the 7x10 foot low-speed wind tunnel (LSWT). The mechanism was able to position the model from -15 deg to +90 deg of pitch with accuracy to within 0.2 deg, while keeping the model near the center of the test section. Compatible with the current turntable apparatus, the high angle of attack robotic sting (HARS) retained the turntable's full range of yaw movement of + or - 90 deg. All model positioning was done without shutting the tunnel down to manually alter the sting or mounting apparatus. Pitch adjustment progressed at about 4 deg per second, with final position tuning taking nearly 15 seconds. The mechanism consisted of two square steel telescoping tube struts that were joined at the ends in the test section by a cross link that held the existing LSWT small Langley sting. Wind tunnel blockage and flow irregularities near the model were minimized by mounting drive hardware under the tunnel floor. An IBM/AT compatible microcomputer equipped with an analog-to-digital conversion board provided position control, drive motor signaling, and input signal filtering. Theses. (jhd).
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461573882
Category : Science
Languages : en
Pages : 414
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, SIld disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna and broader dissemination. tional publishing house to assure improved service Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 30 (thesis year 1985) a total of 12,400 theses titles from 26 Canadian and 186 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work.
Author: Avi Eliahu
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
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Book Description
Author: James P. Billingsley
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 64
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Book Description
Wind tunnel model support stings can be subjected to transient aerodynamic and inertial loads which will create oscillatory translations and angular deflections. These transient oscillations always impair steady-state data accuracy and can be large enough to cause structural failure. The primary result of this investigation has been the formulation of a mathematical analysis for the dynamic response of sting-balance combinations subjected to arbitrary transient load inputs. The analysis also provides for sting rigid body motion so that model to tunnel injection and continuous sting rotation can be simulated. A computer program was written to numerically solve the sting-model-balance notion equations.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 268
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Book Description
Author: Jewel B. Barlow
Publisher: John Wiley & Sons
ISBN: 0471557749
Category : Technology & Engineering
Languages : en
Pages : 738
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Book Description
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.
Author: Robert Lyle Fuller
Publisher:
ISBN:
Category : Manipulators (Mechanism)
Languages : en
Pages : 166
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Book Description
Author: Edward P. Warner
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
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Book Description
Author: David Edgar Hahne
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
