Air Cushion Landing System Drop Dynamics Theory (Mechanical)

Abstract

A mechanical analog Vertical Energy Absorption Model (VEAM) is developed to predict the dynamics of an Air Cushion Landing System (ACLS) in the vertical dimension. Three degrees of freedom and thus three primary modes of oscillation are investigated: heave, pitch and roll. Data from Air Force Flight Dynamics Laboratory Tests of a full-scale Australian Jindivik drone are used to develop and verify the model. The VEAM study demonstrates that the use of a mechanical analog prediction scheme for an Air-Cushion Landing System has sufficient merit to warrant further investigation. It shows that a mechanical analog model can predict system response within the model domain of three degrees of freedom without knowledge of the numerous and varying trunk and cushion parameters if the mode spring and damper coefficients are provided.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1973
Accession Number
AD0774431

Entities

People

  • Frederick C. Bauer

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Autonomy

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Center Of Gravity
  • Computational Science
  • Data Analysis
  • Differential Equations
  • Dynamic Tests
  • Equations
  • Equations Of Motion
  • Mass Flow
  • Materials
  • Molecular Dynamics
  • Plastic Explosives
  • Resonant Frequency
  • Test And Evaluation
  • Test Methods
  • Wing Tips

Readers

  • Aerospace Engineering
  • Control Systems Engineering.
  • Marine Hydrodynamics

Technology Areas

  • Autonomy