A TECHNOLOGICAL SURVEY OF VISION BLOCK MATERIALS AND DESIGN
Abstract
Limited firings indicate that materials commercially available for use as ballistic windows are not appreciably better than the laminated glass and the plastic vision blocks covered by Type I and Type II of specification MIL-B- 11352B. Plastic blocks without exterior and interior glass faces are not adequate for stopping AP projectiles from either 0.30 - or 06 or NATO 0.762 weapons. None of the vision blocks of the above specification, or as modified in this endeavor, protection for more than one shot. If the 2nd shot falls with the major destructive area of the 1st shot, either penetration or secondary fragmentation will result. Residual vision after the first shot depends on the location of impact. In most cases monocular vision area will remain. For practical purposes 100% destruction of the vision area will result from a 2nd shot. Inasmuch as the probability of projectile impact is a direct function of target size, it follows that the size of the vision block should be as small as possible for binocular vision.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1962
- Accession Number
- AD0296270
Entities
People
- R.m. Eckerman