Desirable features of an infrared imaging system for aerodynamic research

Robert E. Wright Jr.; Chith K. Puram; Kamran Daryabeigi

doi:10.1117/12.58548

1 April 1992 Desirable features of an infrared imaging system for aerodynamic research

Robert E. Wright Jr., Chith K. Puram, Kamran Daryabeigi

Proceedings Volume 1682, Thermosense XIV: An Intl Conf on Thermal Sensing and Imaging Diagnostic Applications; (1992) https://doi.org/10.1117/12.58548
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

Advantage of non-intrusiveness, capability for field measurement, and increased availability of IR imaging systems have resulted in their wider use for aerodynamic research. However, certain difficulties persist while using currently available systems for such applications. A critical evaluation of the IR imaging systems is presented on the basis of the state-of-the-art of IR imaging technology and experiences in wind tunnel and flight testing at NASA's Langley Research Center. The requirements for using IR thermography as a measurement tool in aerodynamic research are examined in terms of range, sensitivity, and accuracy of temperature measurement, temporal and spatial resolution, and features of target. Deficiencies of present IR imaging systems are identified, and user precautions to avoid such problems by proper selection and operation of these units are suggested. Different aspects of imager performance such as imager optics, video capabilities, and environmental tolerance are discussed. Electronic data recording and image processing hardware and software requirements are evaluated. Slit response tests and spatial resolution are discussed with the objective of obtaining reliable, accurate, and meaningful information from IR thermography measurements for aerodynamic studies.

Citation Download Citation

Robert E. Wright Jr., Chith K. Puram, and Kamran Daryabeigi "Desirable features of an infrared imaging system for aerodynamic research", Proc. SPIE 1682, Thermosense XIV: An Intl Conf on Thermal Sensing and Imaging Diagnostic Applications, (1 April 1992); https://doi.org/10.1117/12.58548

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KEYWORDS

Imaging systems

Infrared imaging

Aerodynamics

Temperature metrology

Spatial resolution

Video

Image processing

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