Showing 121 - 140 results of 194 for search '"rockets"', query time: 0.04s Refine Results
  1. 121

    Modified Regression Rate Formula of PMMA Combustion by a Single Plane Impinging Jet by Tsuneyoshi Matsuoka, Kyohei Kamei, Yuji Nakamura, Harunori Nagata

    Published 2017-01-01
    “…A modified regression rate formula for the uppermost stage of CAMUI-type hybrid rocket motor is proposed in this study. Assuming a quasi-steady, one-dimensional, an energy balance against a control volume near the fuel surface is considered. …”
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  2. 122

    Airspace closures due to reentering space objects by Ewan Wright, Aaron Boley, Michael Byers

    Published 2025-01-01
    “…We determine the probability for a rocket body reentry within airspace over a range of air traffic densities. …”
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  3. 123

    Semantic difficulties of the English aerospace terminological system by Irina Suima

    Published 2024-06-01
    “… The Purpose of the research is to describe the modern system of astronomical and rocket engineering terminology and to investigate the peculiarities of the translation of the relevant terms into the Ukrainian language. …”
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  4. 124

    DISCRETENESS ERRORS OF FREQUENCY LEVEL GAUGES AND METHODS OF THEIR MINIMIZATION by V. B. Goncharov, V. D. Ivchenko

    Published 2016-06-01
    “…The report examines the main causes of errors in the measurement of the level of rocket fuel components by variable frequency sensors - the speed of the wave propagation, the period of modulation, the nonlinearity of the amplitude-frequency characteristics of the generator and circuits, frequency deviation and difference frequency. …”
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  5. 125
  6. 126

    Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography by Wei Xianggeng, Bo Tao, Wang Pengbo, Ma Xinjian, Lou Yongchun, Chen Jian

    Published 2020-01-01
    “…Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the inhibitor. …”
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  7. 127

    Research on High Effi ciency Computing Technology Based on COTS Products by Yue ZHANG, Yubing ZHANG, Tianqi MA, Bin LI, Yenan SHI

    Published 2020-09-01
    “…Aiming at the problem of space environment adaptability of COTS products,the fault tolerance reinforcement of space computer was carried out through crosss layer collaborative software fault tolerant technology.The space computer based on COTS product was designed and developed.Through carrying the last stage rocket,the on orbit technical test was carried out for six months.The test results show that the proposed method can improve the space environment adaptability of COTS products,it has guiding signifi cance to promote the aerospace application of commercial shelf products.…”
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  8. 128
  9. 129

    Research on the influence of loading rate on the dynamic initiation fracture toughness of CMDB propellant by Jian Zheng, Xuan Wu, Zhengwei Sun, Zongtao Guo, Menglong Zhang, Xiong Chen

    Published 2024-12-01
    “…Abstract In the field of gun launched missile extended range rocket, the propellant grain in the rocket needs to withstand significant launch loads during their firing phase, and also bear the high pressure caused by ignition, and the impact of launch overloads and ignition shocks on the structural integrity of propellants becomes very important. …”
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  10. 130

    Some features of impact penetration of penetrators into ground of celestial bodies by E. V. Leun, А. А. Poliakov, S. A. Zashchirinsky, V. K. Sysoev, K. M. Pichkhadze, V. V. Shalay

    Published 2021-03-01
    “…These values are determined for a number of alloys and high-purity metals widely used in rocket and space technology for Earth and space temperatures. …”
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  11. 131

    Design Mode Analysis of Pareto Solution Set for Decision-Making Support by Satoru Hiwa, Tomoyuki Hiroyasu, Mitsunori Miki

    Published 2014-01-01
    “…The effectiveness of the proposed method is verified on the conceptual design problem of the hybrid rocket engine.…”
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  12. 132

    UAV launch methods by Oleksandr Dobrodomov, Vladyslav Proroka, Oleksii Kulyk

    Published 2024-06-01
    “…Catapults are suitable for a wider range of UAV sizes and launch energy requirements; Chemical reactions, such as those occurring in chemical gas generators or through solid rocket fuel combustion in rocket motors, can also provide launch energy. …”
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    Article
  13. 133

    Experimental investigation of the parameters of additively manufactured coaxial swirl injectors by Samir Vekilov, Volodymyr Lipovskyi, Roman Marchan, Artem Lohvynenko

    Published 2023-06-01
    “…Usually for successful development of the rocket engine costly equipment as well as advanced manufacturing experience is in need which explains high overall manufacturing cost. …”
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  14. 134

    Pesticide application and water quality in Doho and Kibimba rice irrigation schemes, eastern Uganda by Sulaiman, Abubakar Aminua, Sarah, Nachuha, Zakia, Tebetyoc

    Published 2022
    “…Independent t-test results showed that water pH, temperature and turbidity varied significantly between Doho and Kibimba (P<0.05). Herbicides such as rocket, Diazine, Cypermatrine glyphosate were being used by famers with rocket frequently used at Doho while glyphosate was the only one used at Kibimba. …”
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  15. 135

    New Space Companies Meet a “Normal” Solar Maximum by Noé Lugaz, Huixin Liu, Brett A. Carter, Jennifer Gannon, Shasha Zou, Steven K. Morley

    Published 2023-09-01
    “…However, the number of rocket launches, satellites in orbit and private space companies has increased dramatically in the past 20 years. …”
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  16. 136

    Investigation on Aging Model of Solid Propellant Using the Degree of Crosslinking by Junqi Wang, Huiru Cui, Weili Ma

    Published 2022-01-01
    “…Solid propellant is the main part of solid rocket motor (SRM). To further investigate the service life of SRM, aging of solid propellant should be concerned. …”
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  17. 137

    Prospects of Germany’s new North Sea spaceport by Vladislav B. Belov

    Published 2024-08-01
    “…This strategy was updated in 2023, with one of the priorities being the creation of a dedicated spaceport for launching low-orbit rocket carriers in the North Sea. This project represents a unique opportunity not only to strengthen Germany’s position on the international stage but also to stimulate the development of the national space sector, including its commercialization, known as New Space. …”
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  18. 138

    A Systematic Study of Inverting Overlappograms: MaGIXS—A Case Study by P. S. Athiray, Arthur Hochedez, Amy R. Winebarger, Dyana Beabout

    Published 2025-01-01
    “…An unfolding method is successfully developed and demonstrated on the recent rocket flight of the Marshall Grazing Incidence X-ray Spectrometer, which observed several strong emission lines in the 8–30 Å wavelength range from two X-ray bright points and a portion of an active region. …”
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  19. 139

    Mega LEO Satellite Constellations Networking: Challenges and Key Technologies by SUN Yaohua, FENG Xinao, PENG Mugen

    Published 2024-12-01
    “…Owing to the advances in satellite manufacturing and rocket launch technology, the deployment of mega LEO constellations has become an important direction for the development of satellite Internet. …”
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  20. 140

    Design of device for gas shielding of joint during friction stir welding by I. K. Chernykh, E. V. Vasil`ev, E. I. Tkachenko, A. S. Lukin, D. A. Proshutinskiy, V. A. Valova, E. A. Savva

    Published 2019-11-01
    “…Due to its characteristics, titanium alloys are widely used in industries such as shipbuilding, aircraft manufacturing, rocket production, etc. Friction stir welding of titanium alloys is a perspective method for manufacturing parts in these industries. …”
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