Analytical and experimental evaluation of a proposed self-forging fragment munition (open access)

Analytical and experimental evaluation of a proposed self-forging fragment munition

Analytical and experimental tools have been used to study the formation of a proposed self-forging fragment projectile. The primary objective of this study is the determination of the interior and exterior shape of the fully formed fragment, and to determine if the fragment tumbles in flight. In addition, it is of interest to compare computer predictions to experimental results. An experiment was performed using high speed photography and high-energy flash x-ray radiography to study liner and case motion and projectile formation. Fabrication and assembly tolerances were closely controlled in an effort to eliminate tolerances as a possible source of fragment instability. X-ray film-density contours were analyzed to determine the fully formed fragment interior and exterior shape. Down-range yaw screens showed fragment tumbling in flight. The computed fragment shape was compared to experimental results and it was found that a retaining ring in the computational model near the liner periphery had a significant effect on the final computed fragment shape. With the retaining ring in the computational model and full two-way sliding between all material interfaces, the final computed fragment showed very good agreement with the experiment on both exterior and interior shapes.
Date: December 27, 1982
Creator: Tuft, D.B. & Folsom, E.N.
System: The UNT Digital Library
Congressional Pay (open access)

Congressional Pay

The question of a salary increase for Members of Congress was considered by both Houses numerous times during the 97th Congress. The issue was last considered during December in the FY83 Further Continuing Appropriations. As sent to the President, the measure provided for a 15% pay increase for Members of the House of Representatives and other senior Federal officials, but not for Senators. The resolution was signed into law by the President on Dec. 21, 1982. Previously, in September, Congress approved a pay cap through Dec. 17, 1982 for Members and other senior Federal officials.
Date: December 27, 1982
Creator: Dwyer, Paul E.
System: The UNT Digital Library