Academic literature on the topic 'Helicopter flight operations'

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Dissertations / Theses on the topic "Helicopter flight operations"

1

Lentz, Frederick Charles. "Integration of ASW helicopter operations and environment into NPSNET." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304302.

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Thesis (M.S. in Computer Science) Naval Postgraduate School, September 1995.<br>"September 1995." Thesis advisor(s): Michael J. Zyda, John S. Falby. Includes bibliographical references (p. 107). Also available online.
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Ngo, Tri Dinh. "Constrained Control for Helicopter Shipboard Operations and Moored Ocean Current Turbine Flight Control." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71685.

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This dissertation focuses on constrained control of two applications: helicopter and ocean current turbines (OCT). A major contribution in the helicopter application is a novel model predictive control (MPC) framework for helicopter shipboard operations in high demanding sea-based conditions. A complex helicopter-ship dynamics interface has been developed as a system of implicit nonlinear ordinary differential equations to capture essential characteristics of the nonlinear helicopter dynamics, the ship dynamics, and the ship airwake interactions. Various airwake models such as Control Equiva
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3

Shafer, Daniel Manfred. "Active and Passive Flow Control over the Flight Deck of Small Naval Vessels." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32427.

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Helicopter operations in the vicinity of small naval surface vessels often require excessive pilot workload. Because of the unsteady flow field and large mean velocity gradients, the envelope for flight operations is limited. This experimental investigation uses a 1:144 scale model of the U.S. Navy destroyer DDG-81 to explore the problem. Both active and passive flow control techniques were used to improve the flow field in the helicopterâ s final decent onto the flight deck. Wind tunnel data was collected at a set of grid points over the shipâ s flight deck using a single component hotw
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4

Pereira, Figueira José Márcio. "The use of offline simulation tools to estimate ship-helicopter operating limitations." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0511/document.

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Les limitations d’atterrissage des hélicoptères ne sont pas valables dans l'environnement à bord d’un navire. Il n'existe aucune méthodologie approuvée de l'analyse ou de la simulation pour évaluer la compatibilité des hélicoptères-navires et préparer les essais de qualification hélicoptères-navires. Dans ce contexte, le présent travail présente le développement et l'analyse d'une méthodologie hors ligne pour déterminer les limites opérationnelles hélicoptères-navires, SHOLs, en fonction des prédictions d’un modèle de pilote humain. Pour cela, des essais pilotés par des humains sont effectués
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DERE, Ahmet Murat. "Flight regime recognition analysis for the army UH-60A IMDS usage." Thesis, Monterey, California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2510.

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Approved for public release; distribution is unlimited<br>Usage Monitoring requires accurate regime recognition. For each regime, there is a usage assigned for each component. For example, the damage accumulated at a component is higher if the aircraft is undergoing a high G maneuver than in level flight. The objective of this research is to establish regime recognition models using classification algorithms. The data used in the analysis are the parametric data collected by the onboard system and the actual data, consisting of the correct regime collected from the flight cards. This stud
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Forrest, James Stephen. "Predicting ship-helicopter operating limits using time-accurate CFD ship airwakes and piloted flight simulation." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526869.

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7

Johnson, Kevin Lee. "Prediction of operational envelope maneuverability effects on rotorcraft design." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47601.

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Military helicopter operations require precise maneuverability characteristics for performance to be determined for the entire helicopter flight envelope. Historically, these maneuverability analyses are combinatorial in nature and involve human-interaction, which hinders their integration into conceptual design. A model formulation that includes the necessary quantitative measures and captures the impact of changing requirements real-time is presented. The formulation is shown to offer a more conservative estimate of maneuverability than traditional energy-based formulations through quantitat
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Revor, Mark S. "An analysis of the integrated mechanical diagnostics health and usage management system on rotor track and balance." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FRevor.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, June 2004.<br>Thesis advisor(s): Lyn R. Whitaker, Arnold H. Buss. Includes bibliographical references (p. 77-78). Also available online.
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9

Unnikrishnan, Suraj. "Adaptive Envelope Protection Methods for Aircraft." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11478.

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Carefree handling refers to the ability of a pilot to operate an aircraft without the need to continuously monitor aircraft operating limits. At the heart of all carefree handling or maneuvering systems, also referred to as envelope protection systems, are algorithms and methods for predicting future limit violations. Recently, envelope protection methods that have gained more acceptance, translate limit proximity information to its equivalent in the control channel. Envelope protection algorithms either use very small prediction horizon or are static methods with no capability to adapt to cha
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10

Praveen, B. "Study of the ship airwake-helodeck flow field for safe helo operations." Thesis, 2018. http://localhost:8080/xmlui/handle/12345678/7776.

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