Paper
7 June 1989 In-Bore Projectile Velocity Measurement With Laser Interferometer
Zou Wenhao, Yuan Guifang, Tian Qingzheng, Zheng Bo, Wu Cheng
Author Affiliations +
Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969183
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China
Abstract
The measurement of axial motion of the projectile along the gun barrel against time is one of the important methods to study the work-doing ability of propellant powders. The interaction between gun bore and projectile is interesting to many ballistician and designers. The velocity of the projectile changes from zero to several thousand meters per second, so it is difficult to observe the velocity history because of its highly non-linear velocity history and short effective time interval. The whole course in barrel is of great interest. For designers, the shooting moment is the most interesting. The measurement of the data is the most difficult task, and therefore, the highest resolution of the instruments used is requised. Because of its high resolution, F-PVIS is the suitable equipment for measuring the projectile moving in the bore. The retroreflector used is the key element of success and must meet strict requirements. The CV' He-Ne laser beam is di-rected via a-4disposable mirror down the barrel onto the retroreflector glued to the projectile. The Dapple shift of wavelength of reflected beam is proportional to the projectile velocity. Then, the shifted beam passes through a F-P interferometer and is recorded with an image converter tube camera. The basic principles are discussed together with some typical results from the experiments on 30 mm smooth bore gun. It is important to seal powder gases and nylon driving band can be used.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zou Wenhao, Yuan Guifang, Tian Qingzheng, Zheng Bo, and Wu Cheng "In-Bore Projectile Velocity Measurement With Laser Interferometer", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969183
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Interferometers

Velocity measurements

Motion measurement

Cameras

Mirrors

Retroreflectors

Nose

Back to Top