Modeling and Control Design of a Wind Tunnel Model Support
| Author | : |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 1990 |
| Genre | : |
| ISBN | : |
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Modeling And Control Design Of A Wind Tunnel Model Support
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Modeling the Benchmark Active Control Technology Wind-Tunnel Model for Active Control Design Applications
| Author | : National Aeronautics and Space Adm Nasa |
| Publisher | : |
| Total Pages | : 32 |
| Release | : 2018-10-22 |
| Genre | : |
| ISBN | : 9781729088036 |
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This report describes the formulation of a model of the dynamic behavior of the Benchmark Active Controls Technology (BACT) wind tunnel model for active control design and analysis applications. The model is formed by combining the equations of motion for the BACT wind tunnel model with actuator models and a model of wind tunnel turbulence. The primary focus of this report is the development of the equations of motion from first principles by using Lagrange's equations and the principle of virtual work. A numerical form of the model is generated by making use of parameters obtained from both experiment and analysis. Comparisons between experimental and analytical data obtained from the numerical model show excellent agreement and suggest that simple coefficient-based aerodynamics are sufficient to accurately characterize the aeroelastic response of the BACT wind tunnel model. The equations of motion developed herein have been used to aid in the design and analysis of a number of flutter suppression controllers that have been successfully implemented. Waszak, Martin R. Langley Research Center RTOP 522-33-11-01...
Modeling the Benchmark Active Control Technology Wind-tunnel Model for Active Control Design Applications
| Author | : Martin R. Waszak |
| Publisher | : |
| Total Pages | : 34 |
| Release | : 1998 |
| Genre | : Aeroelasticity |
| ISBN | : |
Download Modeling the Benchmark Active Control Technology Wind-tunnel Model for Active Control Design Applications Book in PDF, Epub and Kindle
This report describes the formulation of a model of the dynamic behavior of the Benchmark Active Controls Technology (BACT) wind tunnel for active control design and analysis applications. The model is formed by combining the equations of motion for the BACT wind tunnel model with actuator models and a model of wind tunnel turbulence. The primary focus of this report is the development of the equations of motion from first principles by using Lagrange's equations and the principle of virtual work. A numerical form of the model is generated by making use of parameters obtained from both experiment and analysis. Comparisons between experimental and analytical data obtained from the numerical model show excellent agreement and suggest that simple coefficient-based aerodynamics are sufficient to accurately characterize the aeroelastic response of the BACT wind tunnel model. The equations of motion developed herein have been used to aid in the design and analysis of a number of flutter suppresion controllers that have been successfully implemented.
Scientific and Technical Aerospace Reports
| Author | : |
| Publisher | : |
| Total Pages | : 702 |
| Release | : 1995 |
| Genre | : Aeronautics |
| ISBN | : |
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Facility Air Control Systems Design for a Pilot Transonic Wind Tunnel
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 1979 |
| Genre | : |
| ISBN | : |
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In late 1973 and early 1974 plans were being formulated in the Air Force Flight Dynamics Laboratory (AFFDL) for constructing a wind tunnel with a fifty inch square test section with variable geometry walls. The variable geometry of the walls would provide an adaptive test section which would allow testing larger models in a smaller tunnel than possible in a comparable sized conventional tunnel. The facility would provide support for in-house test programs when time in other, larger tunnels was not available, and provide this support at a lower cost These economies would also permit a more thorough job of testing, which is important in a flight regime where discontinuities exists in modeling theories.
Design Philosophy for Wind Tunnel Model Positioning Systems
| Author | : |
| Publisher | : |
| Total Pages | : 15 |
| Release | : 1992 |
| Genre | : |
| ISBN | : |
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Wind tunnel testing usually requires positioning of the aircraft model in the airstream. This paper presents the design philosophy for a typical generic automatic control system for use in the wind tunnel facilities at Arnold Engineering Development Center in Tullahoma, Tennessee, and is presently used to accurately control the position and/or velocity of an aircraft in one to six degrees of freedom while taking into account the effects of outside influences. Selection of feedback devices, controller design concepts, safeguard implementation, operator status and display capabilities, and mechanism movement simulation are topics that will be addressed.
Wind Tunnel Test Techniques
| Author | : Colin Britcher |
| Publisher | : Academic Press |
| Total Pages | : 672 |
| Release | : 2023-10-20 |
| Genre | : Technology & Engineering |
| ISBN | : 0128181001 |
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Wind Tunnel Test Techniques: Design and Use at Low and High Speeds with Statistical Engineering Applications provides an up-to-date treatment of the topic. Beginning with a brief history of wind tunnels and its types and uses, the book goes on to cover subsonic, supersonic and hypersonic wind tunnel design and construction, calibration, boundary corrections, flow quality assessment, pressure surveys, and dynamic testing. It also focuses on wind tunnel facilities, making it useful for both the designer and operator. Engineers and graduate students in aerospace, automotive and similar programs will find this book useful in their work with experimental aerodynamics, gas dynamics, facility design and performance. Deals with a broad range of flow speeds in wind tunnels, from low speed to high speed Provides a discussion of similarity laws as well as material on statistical analysis Includes coverage on facility-to-facility and facility-to-CFD correlation Presents advanced topics such as cryogenic wind tunnels, ground simulation in automotive testing, and propulsion testing
Wind Tunnels of NASA
| Author | : Donald D. Baals |
| Publisher | : |
| Total Pages | : 218 |
| Release | : 1981 |
| Genre | : Aerodynamics |
| ISBN | : |
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Design, Development and Control of the HIRM Wind Tunnel Model
| Author | : George C. Papageorgiou |
| Publisher | : |
| Total Pages | : 18 |
| Release | : 1999 |
| Genre | : Automatic control |
| ISBN | : |
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Wind Tunnels: Models, Aerodynamics and Applications
| Author | : Russell Mikel |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2015-02-13 |
| Genre | : Tunnels |
| ISBN | : 9781632405234 |
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The models, aerodynamics and applications of wind tunnels are discussed in this profound book. It will be a valuable tool for students and professionals. It provides an insight into various designs of wind tunnelling and their tremendous research potential. It compiles researches conducted by experts on subsonic and supersonic wind tunnel designs, applicable for a broad range of disciplines. The book discusses various aspects of stationary and portable subsonic wind tunnel designs. It also elucidates topics related to supersonic wind tunnel and discusses a method to address fluctuating effects of fan blade rotation. This book also covers an analysis of wind tunnel applications across a multitude of engineering fields including civil, mechanical, chemical and environmental engineering.
