Accession Number:

AD0784191

Title:

Development and Experimental Verification of Procedures to Determine Nonlinear Load-Deflection Characteristics of Helicopter Substructures Subjected to Crash Forces. Volume 1. Development of Simplified Analytical Techniques to Predict Typical Helicopter Airframe Crushing Characteristics and the Formulation of Design Procedures

Descriptive Note:

Final rept.

Corporate Author:

LOCKHEED-CALIFORNIA CO BURBANK

Personal Author(s):

Report Date:

1974-05-01

Pagination or Media Count:

250.0

Abstract:

The results of a study to develop simplified design procedures for determining nonlinear load-deflection characteristics for helicopter airframe structures are presented in a two-volume report. Volume one describes 60 technical reports and papers with regard to their applicability to crashworthiness analysis and designer-oriented procedures. Studies were made using an existing 31 lumped mass model of the UH-1H helicopter to determine the sensitivity of responses to changes in load-deflection representations. Twelve transmission pylon specimens were fabricated and static and dynamic tests were performed.

Subject Categories:

  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE