Transonic Dynamics Tunnel (TDT)

Metadata Updated: March 8, 2017

The Transonic Dynamics Tunnel (TDT) is a continuous flow wind-tunnel facility capable of speeds up to Mach 1.2 at stagnation pressures up to one atmosphere. The TDT has a 16-feet square slotted test section that has cropped corners and a cross-sectional area of 248 square feet. Air or R-134a, a heavy gas, is used as the test medium. The TDT is particularly suited for rotorcraft aeroelastic testing, primarily because of three advantages associated with the heavy gas. First, the high density of the test medium allows model rotor components to be heavier; thereby, more easily meeting structural design requirements while maintaining dynamic scaling. Second, the low speed of sound in R-134a (approximately 550 feet/second) permits much lower rotor rotational speeds to match full-scale hover tip Mach numbers and reduces the time-scales associated with active control concepts and dynamic response. Finally, the high density environment and low kinematic viscosity of the R-134a test medium increases the Reynolds number throughout the test envelope, which permits more accurate modeling of the full-scale aerodynamic environment of the rotor system.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date March 8, 2017
Metadata Updated Date March 8, 2017

Metadata Source

Harvested from Federal Laboratory Consortium Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date March 8, 2017
Metadata Updated Date March 8, 2017
Publisher Federal Laboratory Consortium
Unique Identifier 4439E3B0-0EA7-418B-BC6E-9908CCE9F56B
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Flcbusinessurl https://flcbusiness.federallabs.org/#/laboratory/5666
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Harvest Source Title Federal Laboratory Consortium Data.json
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