@article{ref1,
title="Flight Test and Simulation of a Cargo Container Slung Load in Forward Flight",
journal="Journal of the American Helicopter Society",
year="2009",
author="Robinson, Dwight and Theron, Johannes N. and Cone, Andrew and Tischler, Mark B. and Lusardi, Jeffery and Cicolani, Luigi S. and Raz, Reuben and Rosen, Aviv",
volume="54",
number="3",
pages="032006-32018",
abstract="This paper presents recent results from a cooperative effort by the U.S. Army Aeroflightdynamics Directorate, the Technion Israel Institute of Technology, and Northern Arizona University to study and simulate the behavior of the 6 × 6 × 8 ft CONEX cargo container in forward flight suspended beneath a UH-60 Black Hawk helicopter. This load, like other cargo containers, is subject to massively separated unsteady flow and is limited by stability to operational airspeeds well below the power-limited speed of the configuration. The study makes use of aerodynamic data from wind tunnel, flight test, and computational fluid dynamics. The objective is a simulation of the helicopter-slung load system validated over the complete flight envelope. The principal remaining technical challenge is a model of the unsteady load aerodynamics capable of predicting the critical unstable speed. Some progress has been made in meeting this challenge. ©2009 American Helicopter Society.<p />",
language="",
issn="0002-8711",
doi="10.4050/JAHS.54.032006",
url="http://dx.doi.org/10.4050/JAHS.54.032006"
}