Accession Number:

ADD019928

Title:

Break Screen Based Speed Sensing Circuit

Descriptive Note:

Patent application, filed 28 Apr 2000

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

2000-04-28

Pagination or Media Count:

17.0

Abstract:

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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Underwater Ordnance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE