FOURTH QUARTERLY PROGRESS REPORT SERVICES, FACILITIES, AND MATERIALS to DESIGN AND DEVELOP HIGH SHOCK AND VIBRATION RESISTANT CRYSTAL UNITS

摘要

Complete preliminary design specifications were established for each of the frequency-types under consideration by the PRC 57-ELS/D-3600 program and units of each type have been constructed.nThis report contains brief summaries of frequency and resistance date from the second experimental model group and summaries of aging characteristics of both first and second experimental model types. The various design refinements, including a review of the Teflon-glass liner retaining method and the development of epoxy-resin bonding of base to frame, are discussed.