Results 11 to 20 of about 8,057 (291)
Life Analysis of Reusable Liquid Rocket Engine Thrust Chamber
Aerospace, 2022 The thrust chamber’s inner wall suffers high temperature and pressure differences from the coolant channel, which limits the life of the rocket engine.
Yuanjie Qi, Yuqiang Cheng, Yan Zhang
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Preliminary Studies of a Propellant System for the Counterprojectile of an Active Protection System [PDF]
Problemy Mechatroniki, 2017 This paper presents a selection of the deliverables for a research project intended to develop a technology demonstrator for a smart counterprojectile forming part of an active protection system.
Zbigniew SURMA +3 more
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Design and Experimental Investigation on Gas Oxygen/Kerosene Ejector Rocket for RBCC Application [PDF]
Xibei Gongye Daxue Xuebao, 2018 The ejector rocket is one of the core components of the rocket based combined cycle propulsion system, and must be capable of variable working conditions.
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Influences of Journal Rotating Direction on Cryogenic Hybrid Journal Bearings
Tribology Online, 2015 In the present study, two types of nine-recess hybrid journal bearings (HJBs) with different recess geometries, i.e., the Young Leaf Mark and the square, were operated at a rotational speed of up to 67,000 rpm using the cryogenic journal bearing test ...
Mamoru Oike +4 more
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A High-Precision Interpolation Method for Data Transfer in Fluid-Structure Interaction Analysis
International Journal of Aerospace Engineering, 2022 In order to improve the precision of data transfer in fluid-structure interaction (FSI) analysis, this paper puts forward an improved inverse isoparametric mapping (IIM) method, which can improve the load transfer accuracy by means of increasing the ...
Xuehua Li +3 more
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Robustness of Cryogenic Hybrid Journal Bearings
Tribology Online, 2012 In the present study, a nine-recess hybrid journal bearing (HJB) having a Young Leaf Mark recess was operated at a rotational speed of up to 75,000 rpm using the cryogenic journal bearing test apparatus at JAXA, to clarify an onset speed of the rotor ...
Mamoru Oike +4 more
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Applied Sciences, 2022 This paper compares various optimization techniques and objective functions to obtain optimum rocket engine performances. This research proposes a modular optimization framework that provides an optimum design for Gas Generator (GG) and Staged Combustion
Suniya Sadullah Khan +5 more
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Авіаційно-космічна техніка та технологія, 2018 The subject matter of the article is an analysis of methods for assessing the reliability of a complex technical system applicable to a rocket engine for solving the problem of estimating the reliability of a rocket engine at an early stage of its ...
Володимир Олексійович Габрінець +1 more
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A Study on Dynamic Characteristics of Thin-Walled Cylindrical Cavities with a Large Aspect Ratio
Aerospace, 2022 The unstable combustion problem in small-sized solid rocket engines with a large aspect ratio is so complicated that its causes remain unclear. In this study, the coupled vibration between the sound field and shell in the engines was proposed as a ...
Fangfang Xu, Hong Li, Dongxu Zhang
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CD8+ T cell memory is sustained in mice by hepatic stellate cells
Hepatology, EarlyView., 2022 HSC role in memory CD8+ T cell maintenance. Abstract Background and Aims Long‐lasting immunological memory is the ultimate goal of vaccination. Homeostatic maintenance of memory CD8+ cytotoxic T cells (MemCD8TCs) is thought to be mediated by IL‐15/IL‐15R heterodimer (15HD)‐expressing myeloid cells.
Yi‐Ting Chen +4 more
wiley +1 more source