KRASH Parametric Sensitivity Study - Transport Category Airplanes

Abstract

The FAA/NASA jointly sponsored Controlled Impact Demonstration (CID) test was conducted. The CID test was a major milestone in a series of inter- related analyses and test prescribed in the FAA Crash Dynamics program. Prior to the CID test, several section and impact tests including analyses were performed. Subsequent to the CID test, correlation between KRASH pretest analyses and actual test data was evaluated. The actual CID test resulted in an unsymmetrical impact which was modeled and the results compared with the recorded test data. Analyses are performed for air-to-ground, ground-to-ground, and longitudinal-only impacts. The results are presented in the form of triangular pulses with definition of the peak amplitude, base time duration and pulse change of velocity. The analytically obtained data are integrated with the full-scale aircraft and section test data to formulate crash design velocity envelopes. The results of the study are used to suggest seat dynamic test conditions. Keywords: Dynamic pulse, Design criteria, Transport category airplanes.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1987
Accession Number
ADA189962

Entities

People

  • Gil Wittlin
  • W. L. Labarge

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Airplanes
  • Automatic Frequency Control
  • Drop Tests
  • Dynamic Tests
  • Failure Mode And Effect Analysis
  • Fixed Wing Aircraft
  • Frequency
  • Fuselages
  • Impact Tests
  • Landing Gear
  • Mass
  • Nose Wheels
  • Plastic Explosives

Readers

  • Aerospace Engineering
  • Explosive Engineering.
  • Theoretical Analysis.