1. New large-aperture and high- accuracy lateral shearing interferometer
- Author
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Hai Lin Wang, Da Peng Yan, An Zhi He, and Peng Cheng Miao
- Subjects
Flow visualization ,Physics ,business.industry ,Aperture ,Detector ,Astrophysics::Instrumentation and Methods for Astrophysics ,Moiré pattern ,Grating ,Atomic and Molecular Physics, and Optics ,Flow measurement ,Electronic, Optical and Magnetic Materials ,Interferometry ,Optics ,Electrical and Electronic Engineering ,Shearing interferometer ,business - Abstract
The principle of a new large-aperture high-accuracy interferometer for flow visualization is presented. The interferometer uses a Twyman-Green interferometer as a beam-splitter, a grating as a detector, and a real-time moire fringe method to eliminate systematic errors. The interferometer has been used to measure the flow fields in a shock tunnel and obtained satisfactory results.
- Published
- 1991
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