Break Screen Based Speed Sensing Circuit
Patent application, filed 28 Apr 2000
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A device for sensing projectile velocity in an underwater environment is provided. The device includes a plurality of evenly spaced break screen members positioned in a path of the projectile. Each break screen member includes a support member, a pair of transparent sheets spanning the support member, a continuous resistive trace sandwiched between the transparent sheets, and a sensing member correspondingly connected to resistive trace. The sensing member includes means for outputting a signal responsive to impact of the projectile against the break screen, and a logic arrangement for determining difference between impact of at two adjacent break screens throughout the run of break screens, thereby determining a velocity of the projectile.
- Electrical and Electronic Equipment
- Underwater Ordnance