Characteristics of Tipping Screens
Abstract
A series of light, metal, plates, called "Tipping Screens," were fired at by caliber .30 and .50 projectiles. Tipping screens at angles of impact from 0 deg. to 60 deg. The yaw of the projectile was measured just prior to impact with the screen and for some distance beyond. It was found that a relatively light screen will produce a large yaw, 40 deg to 60 deg., but that a distance approximately equal to 1/2 of an ordinary semiperiod is required for the yaw to develop. The yaw produced by the screen is independent of the angular velocity and yaw of the projectile at the time of impact. It depends on the material, thickness, and angle of impact of the screen, and the physical properties of the projectile. The variation of tipping with thickness and angle of impact is complex, and cannot be given by a simple formula. The optimum material of those tested is duraluminum; however, the steel shows promise of equaling the performance of the duraluminum if its strength-weight ratio is increased sufficiently. A mechanism by which the screen tips the projectile is proposed, and the results are analyzed in accordance with this hypothesis.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 03, 1941
- Accession Number
- ADA800536
Entities
People
- A. C. Charters Jr
Organizations
- Ballistic Research Laboratory