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dc.contributor.authorHarada, Masanori
dc.contributor.authorBollino, Kevin
dc.dateAugust 18-21, 2008
dc.date.accessioned2013-03-07T21:43:10Z
dc.date.available2013-03-07T21:43:10Z
dc.date.issued2008-08-18
dc.identifier.urihttp://hdl.handle.net/10945/29661
dc.descriptionThe article of record as published may be located at http://arc.aiaa.org/doi/abs/10.2514/6.2008-6634en_US
dc.descriptionen_US
dc.descriptionAIAA Guidance, Navigation and Control Conference and Exhibit 18 - 21 August 2008, Honolulu, Hawaiien_US
dc.description.abstractThis paper investigates characteristics of minimum-fuel trajectories for an Unmanned Aerial Vehicle (UAV) in high altitude, circling flight under a constant wind. Previous research has shown that periodic circling flight, consisting of a boost arc (maximum thrust) and a coast arc (minimum thrust), improves the fuel consumption when compared to steady-state circling. Since the periodic flight includes ascending flight at the boost arc and descending flight at the coast arc, it is naturally expected that the wind energy influences the trajectories. In this work, numerical simulations are used to investigate the effects of both wind speed and direction on a UAV flying around one loop enclosed in a cylindrical boundary area. The results show that the optimal wind direction manifests as a tail wind just at the coast arc. In addition, the results demonstrate that the optimal wind direction changes with the wind speed and, in some cases, the trajectory under high winds results in smaller fuel consumption than the zero wind case. Thus, the importance of these results is two fold. First, that the periodic flight reveals the existence of an optimal wind direction for the minimum fuel circling. Second, and probably more importantly, generating optimal trajectories without rejecting wind disturbances provides an autonomous capability of using wind to its advantage and therefore improving fuel consumption or perhaps other mission performance metrics.en_US
dc.publisherThe American Institute of Aeronautics and Astronautics (AIAA)en_US
dc.relation.ispartofAIAA Guidance, Navigation and Control Conference and Exhibit 18 - 21 August 2008, Honolulu, Hawaii
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.rightsApproved for public display, distribution unlimiteden_US
dc.titleMinimum Fuel Circling Flight for Unmanned Aerial Vehicles in a Constant Winden_US
dc.typeConference Paperen_US
dc.contributor.corporateOptimal Guidance and Control Laboratory
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.corporateThe American Institute of Aeronautics and Astronautics (AIAA)
dc.contributor.corporateAmerican Astronomical Society (AAS)
dc.contributor.corporateIEEE
dc.subject.authorFuel Circlingen_US
dc.subject.authorUnmanned Aerial Vehiclesen_US
dc.description.funderNAen_US


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