Stabilization of external loads in high speed flight using an active cargo hook

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


The use of an active cargo hook for stabilizing external loads during high speed flight is demonstrated in simulation. A CONEX cargo container with two rear mounted stabilization fins is used as the subject load. Significant nonlinearities in the dynamics of the external load result in multiple equilibria and limit cycle oscillations. A full state feedback linear quadratic controller is developed assuming an isolated load in wind tunnel model and shown to be successful in stabilizing the originally unstable load at a target airspeed of 100 kt. The design Is then completed to cover the target carriage envelope from hover to high speed flight. Simulations of a coupled system incorporating a UH-60 Black Hawk helicopter with an actuated cargo hook and the external load show that the controller is successful in providing system stability throughout the target flight speed envelope.

Original languageEnglish (US)
Title of host publication43rd European Rotorcraft Forum, ERF 2017
PublisherAssociazione Italiana di Aeronautica e Astronautica (AIDAA)
Number of pages14
ISBN (Print)9781510865389
StatePublished - 2017
Event43rd European Rotorcraft Forum, ERF 2017 - Milan, Italy
Duration: Sep 12 2017Sep 15 2017

Publication series

Name43rd European Rotorcraft Forum, ERF 2017


Other43rd European Rotorcraft Forum, ERF 2017

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Aerospace Engineering
  • Instrumentation
  • Electrical and Electronic Engineering


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