A Novel Surface Thermometry Approach for use in Aerothermodynamic Wind Tunnel Testing

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CG89P
Agency Tracking Number: 105956
Amount: $99,965.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: A4.01
Solicitation Number: N/A
Small Business Information
Boston Applied Technologies, Inc.
6F Gill Street, Woburn, MA, -
DUNS: 114584175
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Xiaomei Guo
 Principal Investigator
 (781) 935-2800
 xmguo@bostonati.com
Business Contact
 Yingyin Zou
Title: Business Official
Phone: (781) 935-2800
Email: kzou@bostonati.com
Research Institution
 Stub
Abstract
This SBIR project is aimed at developing a novel thermometry technology with upconverting phosphors for temperature measurement in NASA's high-enthalpy wind tunnels. Conventional thermographic phosphors require illumination by ultraviolet (UV) light and emit light at visible wavelengths. However, UV excitation is problematic in many large-scale facilities because it demands very expensive UV-quality windows and the UV light can be absorbed and scattered by gas species and particles in the flow path. Upconversion phosphors have been previously developed in our company and the temperature-sensing effect up to around 1000ºC with excellent sensitivity was demonstrated. A major part of this Phase I efforts will be directed towards applying these thermographic phosphors to a surface coating on a model and tested in a wind tunnel environment. The objective is to develop new surface coatings that are aerodynamically smooth, very durable, require near IR excitation and enable surface temperatures in the range of 300 K to 1500 K to be measured.

* information listed above is at the time of submission.

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