Summary of Results for a Twin-Engine, Low-Wing Airplane Substructure Crash Impact Condition Analyzed with Program 'KRASH'.

Abstract

This report contains the results of using digital computer program KRASH to model and analyze the dynamic response of a twin-engine, low-wing airplane substructure subjected to a 27.5 ft/sec vertical velocity impact. The test was performed previously by NASA-Langley as part of a joint FAA-NASA effort concerning general aviation airplane crash dynamics. Included in this report are the math model description, pertinent test data, a comparison of analysis versus test results and the results of a limited parameter sensitivity study using program KRASH. Floor and occupant pelvis vertical acceleration responses obtained from test measurement are compared to corresponding analytical results. The effect of model representation and input data selection variations on dynamic behavior are evaluated. Conclusions are presented based on the results of the effort. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA069171

Entities

People

  • Gil Wittlin

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Airplanes
  • Computer Programs
  • Computers
  • Digital Computers
  • Dynamic Response
  • Filters
  • Filtration
  • Fuselages
  • Measurement
  • Modulus Of Elasticity
  • Peak Values
  • Research Facilities
  • Spars
  • Stiffness
  • Test Facilities

Fields of Study

  • Engineering

Readers

  • Aerodynamics/Aeronautics.
  • Computational Modeling and Simulation
  • Explosive Engineering.