Computation of the Safety Fans for Multistage Aerodelivery Systems

Abstract

This paper deals with the development of a mathematical foundation and practical algorithms to compute the safety fans to be used in conjunction with aerodynamic deceleration payload delivery systems tests. The paper provides formulas to compute a descent/gliding trajectory for a multiple-stage system and then considers several cases of major failures, It also introduces the concept of ballistic winds, simplifying calculation of the safety fans so that the computer is no longer needed, and shows how to carefully calculate these ballistic winds based on the best known winds aloft. Finally, the paper introduces the graphical user interface developed and tested by the authors that is supposed to provide test planning officers with a unique variety of trade-off options as well as to effectively represent all safety-related information both to the ground personnel and to the crew performing a payload delivery from a transport aircraft or helicopters.

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Document Details

Document Type
Technical Report
Publication Date
May 07, 2009
Accession Number
ADA517945

Entities

People

  • Melissa S. Corley
  • Oleg A. Yakimenko

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Drag
  • Aeronautics
  • Aircrafts
  • Altitude
  • Astronautics
  • Ballistic Trajectories
  • Computations
  • Equations
  • Failure Mode And Effect Analysis
  • Graphical User Interface
  • Grids
  • Latitude
  • Longitude
  • Measurement
  • Robotics
  • Trajectories
  • User Interface

Fields of Study

  • Computer science
  • Engineering

Readers

  • Aerospace Engineering
  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Systems Analysis and Design