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Proceedings Paper

Development Of Model P-302 Beryllium Rotating Mirror Component In High Speed Streak Camera
Author(s): Yongsheng Sang
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Paper Abstract

This paper depicts the development and test of Model P-302 Beryllium Rotating Mirror Component used in Model WPG-30 or Model SJZ-15 Streak Camera. The mirror body is made of Hot lsostatic Pressing (HIP) Beryllium. The mirror reflective surface is made by replica film method and consists of 0.1 wave-length flatness beryllium substrate with an aluminum overcoating. Its reflectance is 83%. The cavity of the rotating mirror is not vacuumized. The rotor is strictly adjusted with the dynamic balance method. The turbine is driven by compressive-air and the maximum rotating speed in test is 5,833 rps. The size of the mirror body is 22.5X25 mmX8 mm (rotating diameter is 22.5 mm). Under examination of dynamic performance its writing rate is 15 km/s, the time resolution is 1.4 ns (0.01 mm slit width), the dynamic resolution in scanning direction is 28 line pairs/mm and the effective aperture at film is 1/10.6. The results for detonation experiments indicated that when its rotating speed was 5,000rps, the image density was suitable for measurement while using 36 DIN film. And the results also showed that the precision of measurement have been greatly improved as compared with the steel rotating mirror used before.

Paper Details

Date Published: 7 June 1989
PDF: 5 pages
Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); doi: 10.1117/12.969090
Show Author Affiliations
Yongsheng Sang, Southwest Institute of Fluid Physics (China)


Published in SPIE Proceedings Vol. 1032:
18th Intl Congress on High Speed Photography and Photonics
DaHeng Wang, Editor(s)

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