An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disk Loading V/STOL Model

An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disk Loading V/STOL Model

Author: Travis W. Binion

Publisher:

Published: 1971

Total Pages: 72

ISBN-13:

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The investigation reported herein is the experimental portion of a unified theoretical and experimental search for a slotted wind tunnel wall configuration with minimal interference for conventional and V/STOL models. It is shown that theory and experiment are in excellent agreement for the classical case provided an appropriate expression is used to relate the wall geometry to the boundary condition. Classical data correction equations are not appropriate for the V/STOL case, however. An additional term, not predicted by theory, is needed to account for changes in the jet wake. Geometric parameters which influence the wall interference quantities are indicated. Wall configurations are shown which will produce interference-free force data to a jet-to-free-stream velocity ratio of 4.5. (Author).


An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disc Loading V/STOL Model

An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disc Loading V/STOL Model

Author: T. W Binion (Jr)

Publisher:

Published: 1971

Total Pages: 65

ISBN-13:

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The investigation reported herein is the experimental portion of a unified theoretical and experimental search for a slotted wind tunnel wall configuration with minimal interference for conventional and V/STOL models. It is shown that theory and experiment are in excellent agreement for the classical case provided an appropriate expression is used to relate the wall geometry to the boundary condition. Classical data correction equations are not appropriate for the V/STOL case, however. An additional term, not predicted by theory, is needed to account for changes in the jet wake. Geometric parameters which influence the wall interference quantities are indicated. Wall configurations are shown which will produce interference-free force data to a jet-to-free-stream velocity ratio of 4.5. (Author).


An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disk Loading V/STOL Model

An Investigation of Several Slotted Wind Tunnel Wall Configurations with a High Disk Loading V/STOL Model

Author: Travis W. Binion

Publisher:

Published: 1971

Total Pages: 0

ISBN-13:

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The investigation reported herein is the experimental portion of a unified theoretical and experimental search for a slotted wind tunnel wall configuration with minimal interference for conventional and V/STOL models. It is shown that theory and experiment are in excellent agreement for the classical case provided an appropriate expression is used to relate the wall geometry to the boundary condition. Classical data correction equations are not appropriate for the V/STOL case, however. An additional term, not predicted by theory, is needed to account for changes in the jet wake. Geometric parameters which influence the wall interference quantities are indicated. Wall configurations are shown which will produce interference-free force data to a jet-to-free-stream velocity ratio of 4.5. (Author).


Calculation of Interference for a Porous Wall Wind Tunnel by the Method of Block Cyclic Reduction

Calculation of Interference for a Porous Wall Wind Tunnel by the Method of Block Cyclic Reduction

Author: C. F. Lo

Publisher:

Published: 1975

Total Pages: 46

ISBN-13:

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The lift interference was calculated for a porous wall wind tunnel by a modified method of block cyclic reduction. This efficient, numerical method has indicated its accuracy by comparison with other available analytical and approximate solutions. A scheme is introduced to search for optimum wall configurations. The lift interference computed for an NACA 64-series finite airfoil in some optimum configurations has demonstrated the achievement of minimization of interference. The effect of test section length is also examined. (Author).


Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports

Author:

Publisher:

Published: 1991

Total Pages: 1460

ISBN-13:

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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.


Advisory Report

Advisory Report

Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development

Publisher:

Published: 1975

Total Pages: 140

ISBN-13:

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