Accession Number:

ADA071749

Title:

Angular Vibration of Aircraft. Volume 2. Prediction Methods for Angular Vibration

Descriptive Note:

Final rept. Aug 1977-Apr 1979

Corporate Author:

ANAMET LABS INC SAN CARLOS CA APPLIED MECHANICS DIV

Report Date:

1979-04-01

Pagination or Media Count:

457.0

Abstract:

This report describes development work in several distinct areas, all related to prediction of angular vibration of aircraft structures. Angular vibration in this context refers to dynamic rotations or changes in slope at specific points on a vibrating structure. It is of interest primarily in connection with high resolution optical and electro-optical systems. Efforts were directed at both low frequency vibration, where individual normal modes are known, as well as high frequency vibration where they are not. For low frequency predictions, improved accuracy per unit cost was sought by an evolutionary improvement to an existing finite element code. For high frequency predictions the method of Statistical Energy Analysis was pursued.

Subject Categories:

  • Aircraft
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE