High Frequency Surface Pressure, Shear Stress and Heat Flux Measurements for High Temperature Applications

Award Information
Agency:
Department of Defense
Amount:
$99,071.00
Program:
STTR
Contract:
FA9550-07-C-0129
Solitcitation Year:
2007
Solicitation Number:
N/A
Branch:
Air Force
Award Year:
2007
Phase:
Phase I
Agency Tracking Number:
F074-014-0270
Solicitation Topic Code:
AF07-T014
Small Business Information
LAMBDA INSTRUMENTS, INC.
840 University City Blvd, Suite 4, Blacksburg, VA, 24060
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
133461553
Principal Investigator
 Jon Greene
 Chief Technology Officer
 (540) 953-1796
 jgreene@lambdainc.com
Business Contact
 Jon Greene
Title: Chief Technology Officer
Phone: (540) 953-1796
Email: jgreene@lambdainc.com
Research Institution
 VIRGINIA TECH
 Walter O'Brien
 Dept. of Mech. Engineering
109 Randolph Hall
Blacksburg, VA, 24061
 (540) 231-9104
 Nonprofit college or university
Abstract
Lambda Instruments, Inc., in cooperation with Virginia Tech and Pratt & Whitney, propose to investigate the feasibility of developing ultra high-temperature, high-frequency sapphire optical fiber-based sensors for next generation hypersonic vehicle sensors and wind tunnel testing programs up to 3600 ºF. The capability to accurately measure the surface pressure, skin friction, and temperature gradient imposed on a body subjected to high speed flow is a vital first step toward improving the performance of future hypersonic vehicles. Although real-time determination of these parameters has been an on-going challenge since the early days of flight, only in the last 15 years has attention shifted to hypersonic conditions due to sensor advancements in miniaturization, sensitivity, and mounting techniques. Accurate measurements of aerodynamic heating is a major concern at hypersonic speeds. Temperature sensors used to monitor the thermal profile can also give insight into determining the peak in a shock interaction region or the boundary layer transition. Finally, current air-breathing hypersonic vehicles integrate airframe and engine. The entire fore body of a scramjet vehicle's underside, for example, may be used as an external inlet to provide flow at the perfect condition to the engine. Failure to accurately know or predict surface conditions can lead to engine failure or catastrophic vehicle structural failure.

* information listed above is at the time of submission.

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