High Repetition Rate, High Resolution Shutterless Photography For Gas Dynamic Studies

Lee A. Cross; Edward A. Strader

doi:10.1117/12.967767

1 March 1983 High Repetition Rate, High Resolution Shutterless Photography For Gas Dynamic Studies

Lee A. Cross, Edward A. Strader

Proceedings Volume 0348, 15th Intl Congress on High Speed Photography and Photonics; (1983) https://doi.org/10.1117/12.967767
Event: 15th International Congress on High Speed Photography and Photonics, 1982, San Diego, United States

Abstract

A system for the production of high resolution, high repetition rate cinephotographic records has been developed at the University of Dayton Research Institute. Such a system consists of a short-pulse duration, high repetition rate metal vapor laser illuminator and an extremely simple film transport. By using a short-pulse duration laser illuminator capable of operating at high PRF it is possible to produce long, detailed, and high resolution photographic records of a variety of types. Such a photographic system can be applied to the analysis of a very wide variety of difficult subjects. Front-lit, speckle, back-lit, shadow, and schlieren photographs have been recorded at framing rates above 10 kHz using 16 mm reel-to-reel and 35 mm rotating drum cameras. The short (20 ns) pulse duration of the laser illuminator effectively stops the motion of both the object and the camera film so that no motion compensating optics are required. Specific examples of the applicability of the shutterless photography to difficult subjects such as burning rocket fuel, mechanical systems undergoing rapid deformation, and rapidly evolving gas dynamics systems such as dump combustors and ramjets are described.

Citation Download Citation

Lee A. Cross and Edward A. Strader "High Repetition Rate, High Resolution Shutterless Photography For Gas Dynamic Studies", Proc. SPIE 0348, 15th Intl Congress on High Speed Photography and Photonics, (1 March 1983); https://doi.org/10.1117/12.967767

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