Improved Vibration Design and Test Procedure for Aircraft

Recent experience with vibration qualification of avionics for the B-1 airplane has revealed deficiencies in commonly used vibration design and test procedures. Specific examples of deficiencies are discussed. Recommendations for improving vibration design and test procedures are presented in the areas of environment prediction, qualification testing, and use of vibration isolators. Suggestions are made relative to vibration design and testing in light of the “try-before-buy” concept.