A Laser System For Cryogenic Wind Tunnels

Flow Visualization in Wind Tunnels

Flow visualization is an experimental means of examining the flow patterns around a body or over its surface. The flow is “visualized” by introducing dye, smoke or pigment into the flow in the area under investigation. The primary advantage of such a method is its ability to provide a description of the flow over a model without a complicated data reduction and analysis. Smokeflow visualization...

Characterization and Uncertainty Analysis of a Reference Pressure Measurement System for Wind Tunnels

This paper presents the calibration results and uncertainty analysis of a high-precision reference pressure measurement system currently used in wind tunnels at the NASA Langley Research Center (LaRC). Sensors, calibration standards, and measurement instruments are subject to errors due to aging, drift with time, environment effects, transportation, the mathematical model, the calibration exper...

A Wire-Driven Parallel Suspension System with 8 Wires (WDPSS-8) for Low-Speed Wind Tunnels

As a new type of parallel manipulator, the wire-driven parallel manipulator has advantageous characteristics such as simple and reconfiguration structure, large workspace, high load capacity, high load/weight ratio, easy assembly/disassembly, high modularization, low cost and high speed. A new concept has been proposed by using the wire-driven parallel manipulator as aircraft model suspension s...

Assessment of Wind Erosion Parameters Using Wind Tunnels

*Lawrence J. Hagen, USDA-ARS, Wind Erosion Research Unit, Throckmorton Hall 2004, Kansas State University, Manhattan, KS 66506. *Corresponding author: [email protected]. Contribution from USDA-ARS in cooperation with Kansas Agric. Exp. Sta., Contribution No. 99-389-A. ABSTRACT Assessment of wind erosion parameters applicable to the field scale using wind tunnels requires attention to both scal...

Some Lessons Learned with Wind Tunnels