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In-flight simulation of high agility through active control: Taming complexity by designThe motivation for research into helicopter agility stems from the realization that marked improvements relative to current operational types are possible, yet there is a dearth of useful criteria for flying qualities at high performance levels. Several research laboratories are currently investing resources in developing second generation airborne rotorcraft simulators. The UK's focus has been the exploitation of agility through active control technology (ACT); this paper reviews the results of studies conducted to date. The conflict between safety and performance in flight research is highlighted and the various forms of safety net to protect against system failures are described. The role of the safety pilot, and the use of actuator and flight envelope limiting are discussed. It is argued that the deep complexity of a research ACT system can only be tamed through a requirement specification assembled using design principles and cast in an operational simulation form. Work along these lines conducted at DRA is described, including the use of the Jackson System Development method and associated Ada simulation.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Padfield, Gareth D.
(Defence Research Agency Bedford, United Kingdom)
Bradley, Roy
(Caledonian Univ. Glasgow, United Kingdom)
Date Acquired
September 6, 2013
Publication Date
July 1, 1993
Publication Information
Publication: NASA. Ames Research Center, Piloting Vertical Flight Aircraft: A Conference on Flying Qualities and Human Factors
Subject Category
Aircraft Stability And Control
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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