1–20 of 4,224 hits
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    α ↔ β changes in Ti-6A1-2Sn-4Zr-2Mo-Si alloy: Characterization, microstructure, and mechanical properties

    Tarín, P / Rodríguez, M C / Simón, A G et al. | SAGE Publications | 2006
    temperatures between 650 and 1060 °C for 1 h, then water quenched, and subsequently heated at 565 °C for 8 h, air cooled. The mechanical properties of ...
    Keywords: mechanical properties

    Zonotopic Kalman filtering for stability augmentation and flight envelope estimation

    Harno, Hendra G / Kim, Yoonsoo / Moon, Jun et al. | SAGE Publications | 2021
    envelopes of an unmanned helicopter via an observer-based (output) feedback control law and a reachability analysis, respectively. The helicopter ...

    Zonal safety analysis in aircraft conceptual design: application to SAvE aircraft

    Chiesa, Sergio / Corpino, Sabrina / Fioriti, Marco et al. | SAGE Publications | 2013
    the results of the application of this technique to two different configurations of the all electric secondary power system (the conventional ...

    Zero-sum differential game guidance law for missile interception engagement via neuro-dynamic programming

    Xi, A-xing / Cai, Yuan-li / Deng, Yi-fan et al. | SAGE Publications | 2023

    In this paper, for solving the nonlinear control problem of the missile intercepting the maneuvering target, a novel nonlinear zero-sum

     ...

    Yaw control of a flying-wing unmanned aerial vehicle based on reverse jet control

    Zhu, Jiachen / Shi, Zhiwei / Sun, Quanbing et al. | SAGE Publications | 2020
    reverse jet control scheme has been designed: (1) to replace the resistance rudders that are used for the yaw control of a conventional flying ...

    X-ray pulsar-based navigation system/Sun measurement integrated navigation method for deep space explorer

    Wang, Yidi / Zheng, Wei / Sun, Shouming | SAGE Publications | 2015
    In order to enhance the autonomy and survivability of deep space explorers, an X-ray pulsar-based navigation system (XNAV)/Sun measurement ...

    X-ray pulsar-based navigation method using one sensor and modified time-differenced measurement

    Wang, Yidi / Zheng, Wei / Zhang, Dapeng et al. | SAGE Publications | 2019
    X-ray pulsar-based navigation method using one sensor (XNAVO) could fix the position of satellites by sequentially observing X-ray pulsars ...

    XPT Two Years On

    Sismey, B G / Pugh, R / Tate, M R | SAGE Publications | 1986
    The Express Passenger Train (XPT) has been introduced by the State Rail Authority of New South Wales on selected country services. This ...

    W-type flying wing radar cross-section analysis

    Zhou, Zeyang / Huang, Jun | SAGE Publications | 2023
    To study the electromagnetic scattering characteristics of a W-type flying wing with two rotors, a computing method is presented. The ...

    Wrinkling analysis and control of rectangular space membrane

    Liu, Mingjun / Huang, Jin / Wang, Yali | SAGE Publications | 2017
    characteristics of these membrane structures. This article presents an active control method to improve the surface accuracy of membrane structures. A ...

    Workspace analysis and verification of cable-driven parallel mechanism for wind tunnel test

    Wang, Xiaoguang / Hu, Yunbo / Lin, Qi | SAGE Publications | 2017
    . The workspace of such a cable robot is limited due to the geometrical and unilateral force constraints, the investigation of which is ...

    Working Top-Down: Cost Estimating before Development Begins

    Pugh, P G | SAGE Publications | 1992
    The present state of the art of cost estimating is reviewed with particular reference to its employment in connection with strategic ...

    Wing flutter suppression enhancement using a well-suited active control model

    Marretta, R M A / Marino, F | SAGE Publications | 2007
    State-space theory is employed here to model a new active wing flutter suppression control. In this paper, the design of a flutter ...

    Wing Flutter Simulations Using an Aeroelastic Solver Based on the Predictor—Corrector Scheme

    Xiao, J / Gu, C | SAGE Publications | 2010
    and analysis of wing flutter in the time domain. The CFD solver is based on an unsteady multi-grid finite-volume algorithm for the Euler ...

    Wind tunnel validation of computational fluid dynamics-based aero-optics model

    Nahrstedt, D / Hsia, Y-C / Jumper, E et al. | SAGE Publications | 2009
    A computational fluid dynamics (CFD)-based aero-optics validation study was conducted in wind tunnel tests at the US Air Force Academy. A ...

    Wind tunnel test of a whirl flutter aeroelastic demonstrator

    Cecrdle, Jiri / Vich, Ondrej / Malinek, Petr | SAGE Publications | 2019
    whirl flutter is explained. Next, the mechanical concept of the demonstrator is described, and preparatory experiments are outlined. The main ...

    Wind tunnel experiments on the optimization of distributed suction for laminar flow control

    Wright, M C M / Nelson, P A | SAGE Publications | 2001
    energy consumption as well as net drag. The flow control system that will have the best chance of doing this will use the minimum amount of ...

    Why Space is Expensive—Operational/Economic Aspects of Space Transport

    Parkinson, R C | SAGE Publications | 1991
    to be continued. They can only be justified if a more commercial attitude is taken to cost recovery without increasing the cost of operations ...

    Wheelset Guidance—Conicity, Wheel Wear and Safety

    Pearce, T G | SAGE Publications | 1996
    This is a discussion of the profile features which govern the guidance of a wheelset, both on straight track and on curves. Starting from ...

    Wheel-Rail Interface Management: A Rolling Stock Perspective

    Fröhling, R D / Hettasch, G | SAGE Publications | 2010