1–20 of 206 hits
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    A new method for ship inner shell optimization based on parametric technique

    Free access
    Yan-Yun Yu / Yan Lin / Ming Chen et al. | DOAJ | 2015
    optimization of a product oil tanker and a bulk carrier, and it is proved to be effective, highly efficient, and engineering practical. ...
    Keywords: Ocean engineering , Naval architecture. Shipbuilding. Marine engineering

    A Review of Wind Tunnel Based Virtual Flight Testing Techniques for Evaluation of Flight Control Systems

    Free access
    Min Huang / Zhong-wei Wang | DOAJ | 2015
    traditional ground evaluation methods, such as Hardware-in-the-Loop Simulation (HILS). With FCS evaluated by VFT before flight test, the risk of ...

    Study on the Effect of Air Throttling on Flame Stabilization of an Ethylene Fueled Scramjet Combustor

    Free access
    Ye Tian / Shunhua Yang / Jialing Le | DOAJ | 2015
    The effect of air throttling on flame stabilization of an ethylene fueled scramjet combustor was investigated by numerical simulation and ...

    Numerical Simulation of Oil Jet Lubrication for High Speed Gears

    Free access
    Tommaso Fondelli / Antonio Andreini / Riccardo Da Soghe et al. | DOAJ | 2015
    The Geared Turbofan technology is one of the most promising engine configurations to significantly reduce the specific fuel consumption. In ...

    Theoretical and Numerical Studies of Dynamic Scaling of a Six-Degree-of-Freedom Laser Propulsion Vehicle

    Free access
    Masayuki Takahashi / Naofumi Ohnishi | DOAJ | 2015
    To estimate the flight reactions of a full-scale vehicle from reduced-scale tests, we constructed a scaling theory for the vehicle size ...

    Knowledge-Based Shape Optimization of Morphing Wing for More Efficient Aircraft

    Free access
    Alessandro De Gaspari / Sergio Ricci | DOAJ | 2015
    An optimization procedure for the shape design of morphing aircraft is presented. The process is coupled with a knowledge-based framework ...

    Heat Flux at the Surface of Metal Foil Heater under Evaporating Sessile Droplets

    Free access
    Igor Marchuk / Andrey Karchevsky / Anton Surtaev et al. | DOAJ | 2015
    Evaporating water drops on a horizontal heated substrate were investigated experimentally. The heater was made of a constantan foil with ...

    Chaotic Artificial Bee Colony Algorithm for System Identification of a Small-Scale Unmanned Helicopter

    Free access
    Li Ding / Hongtao Wu / Yu Yao | DOAJ | 2015
    The purpose of this paper is devoted to developing a chaotic artificial bee colony algorithm (CABC) for the system identification of a ...

    Modelling of Solar Radiation Pressure Effects: Parameter Analysis for the MICROSCOPE Mission

    Free access
    Meike List / Stefanie Bremer / Benny Rievers et al. | DOAJ | 2015
    Modern scientific space missions pose high requirements on the accuracy of the prediction and the analysis of satellite motion. On the one ...

    Distributed Cooperative Search Control Method of Multiple UAVs for Moving Target

    Free access
    Chang-jian Ru / Xiao-ming Qi / Xu-ning Guan | DOAJ | 2015
    To reduce the impact of uncertainties caused by unknown motion parameters on searching plan of moving targets and improve the efficiency of ...

    Prediction of Conducted Emissions in Satellite Power Buses

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    Giordano Spadacini / Flavia Grassi / Diego Bellan et al. | DOAJ | 2015
    This work reports a modeling methodology for the prediction of conducted emissions (CE) in a wide frequency range (up to 100 MHz), which ...

    Firing Control Optimization of Impulse Thrusters for Trajectory Correction Projectiles

    Free access
    Min Gao / Yongwei Zhang / Suochang Yang | DOAJ | 2015
    This paper presents an optimum control scheme of firing time and firing phase angle by taking impact point deviation as optimum objective ...

    Optimization of Trajectory Correction Scheme for Guided Mortar Projectiles

    Free access
    Yongwei Zhang / Min Gao / Suochang Yang et al. | DOAJ | 2015
    flight; however, this method cannot get the max trajectory correction capability of canards according to our analysis. This paper presents an ...

    Optimal Configuration of Virtual Links for Avionics Network Systems

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    Dongha An / Kyong Hoon Kim / Ki-Il Kim | DOAJ | 2015
    meeting the requirement of AFDX. The first is to search available feasible configuration (MTU, BAG) pairs to satisfy application requirements as ...

    A Three-Dimensional Cooperative Guidance Law of Multimissile System

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    Xing Wei / Yongji Wang / Shuai Dong et al. | DOAJ | 2015
    In order to conduct saturation attacks on a static target, the cooperative guidance problem of multimissile system is researched. A three ...

    Research on Dynamic Reliability of a Jet Pipe Servo Valve Based on Generalized Stochastic Petri Nets

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    Yuanbo Chu / Zhaohui Yuan / Jia Chen | DOAJ | 2015
    The jet pipe servo valve is widely used in the military fields of aviation and ship, whose reliability has obvious randomness and dynamic ...

    Sensitivity Analysis of Transonic Flow over J-78 Wings

    Free access
    Alexander Kuzmin | DOAJ | 2015
    angles of attack. Solutions of the unsteady Reynolds-averaged Navier-Stokes equations are obtained with a finite-volume solver on unstructured ...

    Guidance and Control Design for a Class of Spin-Stabilized Projectiles with a Two-Dimensional Trajectory Correction Fuze

    Free access
    Yi Wang / Wei-dong Song / Dan Fang et al. | DOAJ | 2015
    A guidance and control strategy for a class of 2D trajectory correction fuze with fixed canards is developed in this paper. Firstly ...

    Frequencies of Transverse and Longitudinal Oscillations in Supersonic Cavity Flows

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    Taro Handa / Kazuya Tanigawa / Yusuke Kihara et al. | DOAJ | 2015
    effect of the cavity length-to-depth (L/D) ratio on the frequency for a free-stream Mach number of 1.7. The pressure oscillations are measured by ...

    Investigation of Flow Control for the Hypersonic Inlets via Counter Flow

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    Xiaoqiang Fan / Yuan Tao | DOAJ | 2015
    , which is similar to the shock reflection ion hysteresis phenomenon. In order to improve the performance of the flow field, counterflow is ...