Structural Integrity of the M174 Gun Mount

摘要

An increase in the number and severity of structural problems being found with M174 gun mount cradles brought to the depot for rework suggested a need to study the structural integrity of the gun mount. A project proposal was developed in September of 1986 and funds for the project were provided in December of 1987. The objectives of the proposed M174 gun mount study were to: Determine the reliability of depot reclaimed mounts as compared to new mounts. Determine how many effective full charges (EFC's) a new and reclaimed mount can safely withstand, and identify weakness of and recommend improvements to the gun mount. Driving and firing tests were performed at Aberdeen Proving Ground, MD. The objectives of the test were to obtain data to be used as inputs to the computer model and as a comparison to the model results, and to gather data indicating the stress levels in critical areas of the gun mount. The test was initially scheduled as part of the M110 MAPS test, and the number of instrumentation channels available was limited. Therefore, only strain gage information was requested. (SDW)