PRODUCTION ENGINEERING MEASURE QUARTZ CRYSTAL UNITS CR-(XM-40)/U (2.5 MC HIGH PRECISION)

Abstract

Work was continued on designs and techniques for the production and testing of CR-(XM-40)/U quartz crystal units. The CR-(XM-40)/U are very high precision, high stability units at 2.5 mc. These units are intended to serve in primary frequency standards and similar applications where the maximum stability is demanded. Fabrication and preliminary evaluation was completed for engineering sample units, including a few made from cultured quartz. Final check-out of the evaluation equipment was also done. The difficulties encountered in producing sample units were cleared up. Sample units appear to be superior to the ability to test them, with most of the apparent failures traceable to improper test techniques or to equipment malfunctions. Problems in connection with temperature control still exist, but a revised oven design and a special oil bath are expected to solve these problems. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1961
Accession Number
AD0270649

Entities

People

  • J.m. Wolfskill
  • R.t. Schlaudecker
  • Robert Mouck

Tags

DTIC Thesaurus Topics

  • Engineering
  • Fabrication
  • Frequency
  • Frequency Standards
  • Malfunctions
  • Precision
  • Production
  • Production Engineering
  • Production Management Methods
  • Productivity
  • Standards
  • Temperature Control
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Thermal Physics or Thermal Science.