Author: David M. Schuster
Publisher:
ISBN:
Category : Plates (Engineering)
Languages : en
Pages : 44

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Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723912580
Category :
Languages : en
Pages : 44

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Book Description
Tests conducted in the NASA Langley Research Center Transonic Dynamics Tunnel (TDT) assess the aerodynamic characteristics of a splitter plate used to test some semispan models in this facility. Aerodynamic data are analyzed to determine the effect of the splitter plate on the operating characteristics of the TDT, as well as to define the range of conditions over which the plate can be reasonably used to obtain aerodynamic data. Static pressures measurements on the splitter plate surface and the equipment fairing between the wind tunnel wall and the splitter plate are evaluated to determine the flow quality around the apparatus over a range of operating conditions. Boundary layer rake data acquired near the plate surface define the viscous characteristics of the flow over the plate. Data were acquired over a range of subsonic, transonic and supersonic conditions at dynamic pressures typical for models tested on this apparatus. Data from this investigation should be used as a guide for the design of TDT models and tests using the splitter plate, as well as to guide future splitter plate design for this facility.Schuster, David M.Langley Research CenterTRANSONIC WIND TUNNELS; AERODYNAMIC CHARACTERISTICS; DYNAMIC PRESSURE; STATIC PRESSURE; VISCOUS FLOW; WIND TUNNEL TESTS; BOUNDARY LAYERS; SEMISPAN MODELS

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 464

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 654

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Author: J. L. Jacocks
Publisher:
ISBN:
Category : Transonic wind tunnels
Languages : en
Pages : 82

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A combined experimental-theoretical approach is developed for determination of the crossflow characteristics of ventilated walls. The technique is based on measurement of static pressures at the boundaries of a two-dimensional flow, calculation of the interior flow properties with Murman- Cole type finite difference techniques, and calculation of the boundary-layer development on and mass flux distribution through the ventilated wall using Patankar-Spalding type solution techniques. Results verify the validity of assuming proportionality between local pressure and flow angle as a boundary condition for wall interference estimates. However, it is also shown that the thickness of the boundary layer represents a dominant influence on the perforated wall characteristics, with both the slope and intercept of the characteristic being dependent on the boundary layer. The effects on the wall characteristics of suppressing the edgetone noise by use of screen overlays or splitter plates within discrete holes are documented.

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 410

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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 496

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 538

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