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Unpublished Paper
Nonlinear Decelerator for Payloads in Aerial Delivery Systems. I: Design and Testing
Los Alamos Natl. Lab. arXiv (2014)
  • Andrei Ludu, Embry Riddle Aeronautical University
  • Hong Liu, Embry-Riddle Aeronautical University
Abstract
We study the dynamics and the optimization of the shock deceleration supported by a payload when its airborne carrier impacts the ground. We build a nonlinear elastic model for a container prototype and an elastic suspension system for the payload. We model the dynamics of this system and extract information on maximum deceleration, energy transfer between the container and payload, and energy resonant damping. We designed the system and perform lab experiments for various terminal velocities and types of grounds (cement, grass, sand water, etc.). The results are compared with the theoretical model and results are commented, including predictions for deceleration at different types of ground impact. The results can be used for aerial delivery systems, splash-down of capsules, recoveries, weather balloons, coastal surveying systems, or the new introduced goal-line technology in sport competitions.
Keywords
  • Payload drop,
  • nonlinear oscillations,
  • soft matter,
  • splashdown,
  • air surveillance,
  • ground impact.
Publication Date
Summer August 18, 2014
Citation Information
Andrei Ludu and Hong Liu. "Nonlinear Decelerator for Payloads in Aerial Delivery Systems. I: Design and Testing" Los Alamos Natl. Lab. arXiv (2014)
Available at: http://works.bepress.com/andrei_ludu/88/