1–20 of 45 hits
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    Multi-Objective Hybrid Optimal Control for Interplanetary Mission Planning

    Englander, Jacob A. | NTRS | 2014
    problem as a multi-objective hybrid optimal control problem. The method is demonstrated on hypothetical mission to the main asteroid belt and to ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Lunar And Planetary Science And Exploration , Computer Programming And Software

    Development Concepts for Mars Ascent Vehicle (MAV) Solid and Hybrid Vehicle Systems

    McCollum, Lisa Tunstill / Schnell, Andrew / Yaghoubi, Darius et al. | NTRS | 2019
    hybrid and solid vehicle systems for potential Mars Ascent Vehicle (MAV) concepts for the Jet Propulsion Laboratory (JPL). Two MAV propulsion ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Spacecraft Propulsion And Power

    A hybrid approach to near-optimal launch vehicle guidance

    Leung, Martin S. K. / Calise, Anthony J. | NTRS | 1992
    delivers over 99.9 percent of optimal performance and terminal constraint accuracy. ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Launch Vehicles And Space Vehicles

    Mars Ascent Vehicle Hybrid Propulsion Configuration

    Yaghoubi, Darius / Schnell, Andrew | NTRS | 2020
    performing detailed design and analysis on the vehicle with respect to structures and mechanisms, Guidance/Navigation/Control (GNC) systems, avionics ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Spacecraft Propulsion And Power

    Trade-off results and preliminary designs of Near-Term Hybrid Vehicles

    Sandberg, J. J. | NTRS | 1980
    vehicles. The preliminary designs were developed on the basis of mission analysis, performance specification, and design trade-off studies ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Urban Technology And Transportation

    Advanced control design for hybrid turboelectric vehicle

    Abban, Joseph / Norvell, Johnesta / Momoh, James A. | NTRS | 1995
    requirements using advanced control systems is presented. It exploits fuzzy logic, technology and rule based decision support scheme. The benefits of ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Electronics And Electrical Engineering

    A Hybrid Power Management (HPM) Based Vehicle Architecture

    Eichenberg, Dennis J. | NTRS | 2011
    space and terrestrial vehicles. GRC's Electrical and Electromagnetics Branch of the Avionics and Electrical Systems Division initiated the HPM ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Energy Production And Conversion

    Adaptive Optimization for System Performance and Combined Bernstein Polynomial, Optimal Reciprocal Collision Avoidance, Differential Dynamic Programming for Trajectory Replanning and Collision Avoidance for UAM Vehicles

    Matthew Houghton / Michael Acheson / Andrew Patterson et al. | NTRS
    optimal switching time between modes of hybrid dynamical systems. This presentation discusses a parameterized optimal control trajectory ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Stability and Control

    Applications of the hybrid coordinate method to the TOPS autopilot

    Fleischer, G. E. | NTRS | 1978
    Preliminary results are presented from the application of the hybrid coordinate method to modeling TOPS (thermoelectric outer planet ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Launch Vehicles And Space Vehicles

    Aeroelastic effects in multi-rotor vehicles with application to a hybrid heavy lift system. Part 1: Formulation of equations of motion

    Venkatesan, C. / Friedman, P. | NTRS | 1984
    basis of a numerical study aimed at determining the aeroelastic stability and structural response characteristics of a Hybrid Heavy Lift Airship ...
    Keywords: Aircraft Stability And Control

    Reliability and Safety Assessment of Urban Air Mobility Concept Vehicles

    Cedric Justin / Srujal Patel / Etienne Demers Bouchard et al. | NTRS | 2021
    , hybrid electric), notional thrust control systems (rpm control and collective control), and navigation control systems for the concept vehicles ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Concept Vehicles , Air Transportation And Safety

    Retrofits Convert Gas Vehicles into Hybrids

    NTRS | 2012
    . One initiative at Glenn Research Center, the Hybrid Power Management (HPM) program, focused on joining new and mature technologies for optimal ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Man/System Technology And Life Support

    Power Systems Evaluated for Solar Electric Propulsion Vehicles

    Kerslake, Thomas W. / Gefert, Leon P. | NTRS | 2000
    derivative, a SCARLET (Solar Concentrator Arrays with Refractive Linear Element Technology) derivative, and a hybrid inflatable-deployable thin ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Spacecraft Propulsion And Power

    Examination of Unified Control Incorporating Generalized Control Allocation

    Michael J Acheson / Jacob Cook / Irene Gregory | NTRS
    Hybrid vehicles which combine vertical take off and landing with cruise configurations pose a unique challenge for control design and ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Stability And Control , Unified Control,Control Allocation

    Aeromechanical stability analysis of a multirotor vehicle model representing a hybrid heavy lift airship (HHLA)

    Venkatesan, C. / Friedmann, P. P. | NTRS | 1984
    aeromechanical stability of single rotor and tandem rotor coupled rotor/fuselage systems. ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Stability And Control

    Autonomous control systems - Architecture and fundamental issues

    Antsaklis, P. J. / Passino, K. M. / Wang, S. J. | NTRS | 1988
    vehicles is described in detail; it is designed to ensure the autonomous operation of the control system and it allows interaction with the pilot ...
    Publisher: NASA National Aeronautics and Space Administration

    Modular attitude control of a large space platform

    Chichester, F. D. | NTRS | 1982
    Hamiltonian are also presented. A subproblem hierarchy for hybrid multilevel LQR attitude control of a three axis model is described. ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Launch Vehicles And Space Vehicles

    The effects of selected modern technological concepts on the performance and handling characteristics of LTA vehicles

    Mazza, C. J. | NTRS | 1975
    fractions and lighter, more efficient propulsion systems. Qualitatively, future airships are discussed in terms of stability, control and flying ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    MARGInS: Model-Based Analysis of Realizable Goals in Systems

    Davies, Misty / Pressburger, Tom / He, Yuning et al. | NTRS | 2014
    systems which contain some level of autonomy, are best described by hybrid and non-linear mathematics. Even simplified models of such systems need ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance , Computer Programming And Software , Statistics And Probability

    Interagency Workshop on Lighter than Air Vehicles, Monterey, Calif., September 9-13, 1974, Proceedings

    Vittek, J. F., Jr. | NTRS | 1975
    comparison of three heavy lift airborn systems, boundary layer control for airships, computer aided flexible envelope designs, state-of-the-art of ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance