Results 1 to 10 of about 5,519 (211)
Design and performances of a compact differential pumping unit for X-ray beamlines [PDF]
Journal of Synchrotron RadiationIn this contribution, we present a compact differential pumping unit with apertures ≥500 µm. It allows windowless operation for in-air sample environments as well as to connect low-quality in-vacuum sample environments to the beamline UHV (≤10−8 mbar ...
Cristian Maccarrone +2 more
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Static Load Characteristics of Hydrostatic Journal Bearings: Measurements and Predictions [PDF]
Sensors, 2022 Hydrostatic bearings for liquid rocket engine turbopumps provide distinctive advantages, including high load capacity even with low viscosity cryogenic fluid and extending life span by minimizing friction and wear between rotor and bearing surfaces ...
Howon Yi +3 more
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Study of Manufacturing Processes for Liquid Rocket Turbopump Impellers: Test and Analysis [PDF]
Journal of Aerospace Technology and Management, 2020 In the context of the cooperative development of the L75 Liquid Rocket Engine (with 75 kN of thrust) and in the frame of a global enlargement of competence in the field of turbomachines for liquid rocket propulsion systems, Institute of Space Propulsion ...
Ekaterina Sergueievna Zink +4 more
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Numerical and Experimental Study of Nose for LOx Floating Ring Seal in Turbopump
Aerospace, 2022 Floating ring seals are widely used as a leakage control solution for turbomachines because they effectively operate with small clearances between the shaft and seal.
Joon-Hwan Bae +4 more
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Investigation on the Rotordynamic Characteristics of Turbopumps with Angular Contact Ball Bearings
Vibration, 2023 The support stiffness of the turbopump rotor system with angular contact ball bearing varies with the rotational speed, which leads to the inaccurate prediction of the dynamics of the turbopump rotor system.
Yue Su, Kaifu Xu, Yongqiang Gao, Lu Jin
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Heat Generation in Cryogenic Turbopump Bearing
Tribology Online, 2021 Ball bearings on the main shaft of rocket engine turbopumps which supply cryogenic propellants to the main combustion chamber are critical elements of the entire propulsion system of a rocket. A self-lubricating ball bearing with a retainer made of glass-
Hiromitsu Kakudo +2 more
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International Journal of Turbomachinery, Propulsion and Power, 2023 The correct computation of flows over rough surfaces in technical systems, such as in turbomachines, is a significant issue for proper simulations of their performance data.
Benjamin Torner +2 more
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Influence of the Turbopump Exhaust on the Aerodynamic Performance of Supersonic Aircraft
气体物理, 2023 The influence of the location and the flux of the exhaust outlet on the supersonic aircraft by CFD method was studied. The optimum location was confirmed, and the research of the influence of angle of attack on exhaust effects was further carried out ...
Xi-hang JIANG, Lin-jing MA
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Multi-Disciplinary Optimization Conceptual Design of the Launcher Based on Non-Turbopump Propulsion Systems [PDF]
فصلنامه علوم و فناوری فضایی, 2022 Turbopump propulsion systems have been used in almost all launch vehicles. With the advancement of manufacturing technologies, especially in the use of composite and lightweight structures, the use of non-turbopump propulsion systems has been considered ...
Hanieh Eshaghnia +3 more
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Applied Sciences, 2022 The vibration characteristics induced by radial hydraulic force on the fire turbopump have been investigated by numerical simulations in this paper. The numerical model was validated with corresponding experimental measurements.
Ye Yuan, Rong Jin, Lingdi Tang
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