Apparatus for determining projectile's velocity

Details Apparatus for determining projectile's velocity Apparatus for determining projectile's velocity

2006-05-02

2006-05-02

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

C273S333000

Reexamination Certificate

active

07038764

ABSTRACT:
This invention is an apparatus and method for determining the velocity of a projectile. A light curtain unit (20) creates two light curtains (46)(48) and two sensing planes (50)(52). The projectile causes light from the light curtain (46)(48) to be reflected into the detectors (22a) and (24a) of the sensing planes (50)(52). The time for a projectile to pass through one sensing plane to the other is measured and calculated for display by the Display Unit (10).

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