Analysis of Helicopter Structural Crashworthiness. Volume 2. User Manual for "Crash", A Computer Program for the Response of a Spring-Mass System Subjected to One-Dimensional Impact Loading (UH-1D/H Helicopter Application)

Abstract

A mathematical model which may be used to determine the dynamic response of a helicopter airframe subjected to vertical crash loading was developed. This report is, in effect, a manual which will facilitate the use of the computer program 'CRASH'. The program was written to solve the equations and to handle the nonlinearities and constraints which result from use of the mathematical model. The program was used to evaluate the response of the UH-1D/H helicopter to vertical impact loadings. Recommendations were made which, when implemented, will reduce the forces transmitted to the floor and transmission of the aircraft.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1971
Accession Number
AD0880678

Entities

People

  • John K. Drummond
  • Stuart E. Larsen

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Computational Science
  • Computer Programming
  • Computer Programs
  • Computer Simulations
  • Computers
  • Dynamic Response
  • Fuselages
  • Government Procurement
  • Governments
  • Helicopters
  • Mathematical Models
  • Numerical Integration
  • Physical Properties
  • Rotary Wing Aircraft
  • User Manuals

Fields of Study

  • Engineering

Readers

  • Aerospace Engineering
  • Instructional Design and Training Evaluation.
  • Structural Dynamics.