Showing 61 - 80 results of 194 for search '"rockets"', query time: 0.05s Refine Results
  1. 61

    Measurement report: Rocket-borne measurements of large ions in the mesosphere and lower thermosphere – detection of meteor smoke particles by J. Stude, J. Stude, H. Aufmhoff, H. Schlager, M. Rapp, M. Rapp, C. Baumann, F. Arnold, B. Strelnikov

    Published 2025-01-01
    “…<p>We present mass spectroscopic in situ data from rocket flights of two improved ion mass spectrometers in the mesosphere and lower thermosphere region. …”
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  2. 62

    A Novel Active Disturbance Rejection Control with a Super-Twisting Observer for the Rocket Launcher Servo System by Di-Fen Shi, Yuan-Long Hou, Xiao-Hui Gu, Run-Min Hou

    Published 2021-01-01
    “…In this paper, a novel active disturbance rejection control (NADRC) with a super-twisting extended state observer (SESO) is utilized in the rocket launcher servo system. The main arguments in the shipborne rocket launcher system are control accuracy and antidisturbance ability, which are closely related to phase delay and bandwidth. …”
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    Statement of the problem of designing a liquid rocket engine dual bell nozzle of the maximum thrust using the direct method of the calculus of variations by Ivan Dubrovskyi, Valerii Bucharskyi

    Published 2023-06-01
    “… A rocket engine with a standard single-section profiled nozzle provides maximum thrust only at a certain value of atmospheric pressure [1]. …”
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  7. 67

    Short‐Period Concentric Traveling Ionospheric Disturbances Excited by the Launch of China's Long March 4B Rocket Detected by 1 Hz GNSS Data by Xiaolin Li, Feng Ding, Xinan Yue, Jianyong Li

    Published 2022-06-01
    “…The CTIDs were most likely generated after the ignition of second‐stage rockets above the mesopause region.…”
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    Numerical Investigation of the Effect of Equivalent Ratio on Detonation Characteristics and Performance of CH<sub>4</sub>/O<sub>2</sub> Rotating Detonation Rocket Engine by Xiao Xu, Qixiang Han, Yining Zhang

    Published 2025-01-01
    “…Equivalent ratio (ER) is an important factor affecting detonation characteristics and propulsion performance of rotating detonation rocket engine (RDRE). In this paper, the effects of different equivalent ratios detonation characteristics and thrust performance of methane-oxygen RDRE were studied by 2D numerical simulation. …”
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    Firing Control Optimization of Impulse Thrusters for Trajectory Correction Projectiles by Min Gao, Yongwei Zhang, Suochang Yang

    Published 2015-01-01
    “…Further simulations show that the impact point dispersion is mainly influenced by the total impulse deployed, and the impulse, number, and firing interval need to be optimized to reduce the impact point dispersion of rockets. Live firing experiments with two trajectory correction rockets indicate that the firing control scheme works effectively.…”
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  19. 79

    Optimization design of an acoustic cover layer for a cylindrical cavity based on porous materials by Bohan ZHANG, Jili RONG, Xiuyan CHENG

    Published 2025-03-01
    “…During the launch and flight of carrier rockets, the acoustic and vibrational excitations generated by the external environment pose significant threats to their internal payloads. …”
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  20. 80

    MUBEM & SAC: STEM Based Science and Nature Camp by Hasan Zuhtu Okulu, Ayse Oguz-Unver, Sertac Arabacioglu

    Published 2019-07-01
    “…The participants found the opportunity to use telescopes, experience an extensive archaeological excavation, observe the near-nano size object with electron microscopes, construct a bridge like an engineer, and design artifacts like rockets and holograms during the camp. According to results, the science and nature camp supported participants’ STEM attitudes and participants' views on the science and nature camp were positive. …”
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