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  • Other Sources  (3)
  • 2000-2004  (3)
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  • 1
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    V/STOL Dynamics, Control, and Flying Qualities (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: This publication presents material that constituted the lectures presented by the author as part of Course AA 234, Dynamics, Control, and Flying Qualities of Vertical/Short Takeoff and Landing (V/STOL) Aircraft that was taught in the Department of Aeronautics and Astronautics at Stanford University. It covers representative operations of vertical and short takeoff and landing (V/STOL) aircraft, a discussion of the pilot's strategy in controlling these aircraft, the equations of motion pertinent to V/STOL tasks, and their application in the analysis of longitudinal and lateral-directional control in hover and forward flight. Following that development, which applies to the characteristics of the basic airframe and propulsion system, the text concludes with a discussion of the contributions of control augmentation in specific flight tasks and of the integration of modern electronic displays with these controls.
    Keywords: Aircraft Stability and Control
    Type: NASA/TP-2000-209591 , A-0003625 , NAS 1.60:209591
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Evaluation of Flying Qualities and Guidance Displays for an Advanced Tilt-Wing STOL Transport Aircraft in Final Approach and Landing (2002)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: A piloted simulation was performed on the Vertical Motion Simulator at NASA Ames Research Center to evaluate flying qualities of a tilt-wing Short Take-Off and Landing (STOL) transport aircraft during final approach and landing. The experiment was conducted to assess the design s handling qualities, and to evaluate the use of flightpath-centered guidance for the precision approach and landing tasks required to perform STOL operations in instrument meteorological conditions, turbulence, and wind. Pilots rated the handling qualities to be satisfactory for all operations evaluated except those encountering extreme crosswinds and severe windshear; even in these difficult meteorological conditions, adequate handling qualities were maintained. The advanced flight control laws and guidance displays provided consistent performance and precision landings.
    Keywords: Aeronautics (General)
    Type: AIAA Paper 2002-6016 , 2002 Biennial International Powered Lift Conference and Exhibit; Nov 05, 2002 - Nov 07, 2002; Williamsburg, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Caldera-forming processes and the origin of submarine volcanogenic massive sulfide deposits (2003)
    Geological Society of America
    In:  Geology, 31 (4). pp. 375-378.
    Details
    Publication Date: 2020-07-31
    Description: Certain volcanogenic massive sulfide (VMS) ore deposits form in submarine calderas. This association is well known, but the link between caldera formation and the origins of the deposits remains poorly understood. Here we show that the size and location of a VMS deposit within a submarine caldera may be determined by how and when the caldera formed. These spatial-temporal conditions control development of the hydrothermal system associated with the VMS deposit. We propose that caldera opening along outward-dipping faults promotes magma degassing, seawater influx, and high-temperature leaching, resulting in a metal-rich hydrothermal fluid. These outward-dipping faults are considered to provide critical pathways for ore-forming fluids responsible for some caldera-hosted VMS deposits and may also be fundamentally important for the formation of many other caldera-hosted ore deposit types.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
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