Double Exposed Photography Of Flying Small Particles In High Speed Spray By The Use Of Delay System With Optical Fiber

S. Umezu; T. Egashira; S. Hatano; T. Murakami

doi:10.1117/12.969123

7 June 1989 Double Exposed Photography Of Flying Small Particles In High Speed Spray By The Use Of Delay System With Optical Fiber

S. Umezu, T. Egashira, S. Hatano, T. Murakami

Author Affiliations +

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969123
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

Abstract

A new photographic technique to measure the velocity of small particles flying at high speed has been developed. A pulse Ruby laser and an optical fiber system are employed for taking a double exposed photograph in a very short time interval. The delay time is precisely determined by setting the fiber length, then the accuracy of velocity measurements is mainly influenced by the measurements of moving distances of particles. This new technique is applied to observation of diesel fuel spray, and the usefulness of the technique is confirmed.

Citation Download Citation

S. Umezu, T. Egashira, S. Hatano, and T. Murakami "Double Exposed Photography Of Flying Small Particles In High Speed Spray By The Use Of Delay System With Optical Fiber", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969123

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