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24 Research products, page 1 of 3

  • Energy Research

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  • Publication . Part of book or chapter of book . 2007
    Authors: 
    Maido Saarlas;
    Publisher: John Wiley & Sons, Inc.
  • Open Access
    Authors: 
    Teruyuki Izumi; P. Boyagoda; Taiji Satoh;
    Publisher: The Robotics Society of Japan

    Saving energy is one of the main topics of discussion in the modern world due to the limitation of energy resources and the deterioration of the environment on earth. It is, therefore, timely to consider saving the dissipative energy in a manipulator system in PTP motio...

  • Authors: 
    D. C. Sederstrom; N. R. Zagalsky; R. C. McLane;
    Publisher: Defense Technical Information Center

    Abstract : A 14-month program is described which culminated in fabrication and limited flight tests of a cockpit meter instrumentation system displaying aircraft specific energy and energy rate (specific excess power). Detailed account is given of the analysis and desig...

  • Open Access
    Authors: 
    Sergey A. Ishkov; A. A. Khramov;
    Publisher: Elsevier BV

    Abstract The problem of cooperative optimization of trajectory and main design parameters of spacecraft, equipped with propulsion systems with energy accumulation, during low Earth orbit formation and correction in non-central gravitational field is considered. The work...

  • Publication . Conference object . 1981
    Authors: 
    S. PETERSEN; C. RADER;
    Publisher: American Institute of Aeronautics and Astronautics

    Abstract : The object of this study is to find the trajectories which a high performance aircraft would employ to maximize the change in specific energy during a prescribed turn. These values of the change in specific energy are compared to the changes in specific energ...

  • Authors: 
    Mark T. Langhenry; James K. Villarreal; Daniel V. MacInnis;
    Publisher: American Institute of Aeronautics and Astronautics

    The efficiency with which any system uses available energy is often an important measure of the performance of that system. Rockets operate by transforming carried energy of various forms into useful kinetic energy of the payload portion of the vehicle. The efficiency o...

  • Authors: 
    Oziel Rios; Delbert Tesar;
    Publisher: ASMEDC

    In this article, a description of the kinetic energy partition values (or energy ratios) of serial chain mechanisms, as well as their rates of change, are presented. These energy ratios are indicators of the kinetic energy distribution within the system and they exploit...

  • Closed Access
    Authors: 
    E. G. C. Burt;
    Publisher: The Royal Society

    The mass and energy expended during the transfer of a space vehicle from one orbit to another depend both on the magnitude of the orbital change and on the spacecraft propulsion variables. In the present paper the optimum time behaviour of these variables is investigate...

  • Closed Access
    Authors: 
    Jianping Chen; Jian Bin Wang; Yi Min Yang;
    Publisher: Trans Tech Publications, Ltd.

    Four-wheel drive omni-directional mobile robots (FDOMRs) usually carry limited energy and have to accomplish their tasks before deadlines. Energy saving can be achieved in several ways, and one of that is determining a velocity trajectory. To find the minimum energy tra...

  • Closed Access
    Authors: 
    Keulen, van, T.A.C.; Jager, de, A.G.; Steinbuch, M.; Cho, Hyungsuck;
    Publisher: Elsevier BV
    Country: Netherlands

    Abstract Typically the energy management problem of a hybrid vehicle is formulated as an optimization problem, where the optimal power split between the prime mover and the secondary power converter is calculated off line based on a given driving cycle and solved numeri...