Results 81 to 90 of about 4,679 (234)
Hybrid rocket performance [PDF]
, 1992 A hybrid rocket is a system consisting of a solid fuel grain and a gaseous or liquid oxidizer. Figure 1 shows three popular hybrid propulsion cycles that are under current consideration.
Frederick, Robert A., Jr.
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Conceptual design: Dependence of parameterization on design performance of three-stage hybrid rocket
Journal of Fluid Science and Technology, 2014 The subject of this paper is to improve on parameterization for conceptual design method of three stage hybrid rocket. Multi-Objective Genetic Algorithm (MOGA) is employed to solve multi-disciplinary design exploration of a three-stage launch vehicle ...
Masahiro KANAZAKI +5 more
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steel research international, EarlyView.The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
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Development of a Hybrid Sounding Rocket Motor [PDF]
, 2012 ii This work describes the development of a hybrid rocket propulsion system for a reusable sounding rocket, as part of the first phase of the UKZN Phoenix Hybrid Sounding Rocket Programme.
Bernard, Geneviève., Bernard Geneviève
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History, EarlyView.Abstract During the 1960s, Mexico's Institutional Revolutionary Party (PRI) embraced Chinese overtures for a commercial opening as consistent with its anti‐imperialist posture, thereby foreshadowing the diplomatic opening to China in 1972. Yet this professed ideological pluralism was eclipsed by an underlying allegiance to the United States' anti ...
YIXIN TIAN
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Viability of an Electrically Driven Pump-Fed Hybrid Rocket for Small Launcher Upper Stages
Aerospace, 2019 An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is ...
Lorenzo Casalino +2 more
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International Journal of Urban and Regional Research, EarlyView.Abstract In this article I dissect the spatial strategies through which the Spanish attempted to orchestrate both racial difference and similarity in the African colonies of Morocco, Western Sahara and Equatorial Guinea during the first half of the twentieth century.
Pol Fité Matamoros
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Design Trade-offs for Hybrid Rocket Motors [PDF]
, 2012 A new method is developed for preliminary design of hybrid rocket motors. A cooperative evolutionary method is used with an indirect approach to perform the coupled optimization of hybrid rocket motor and trajectory for a sounding rocket.
Pastrone, Dario Giuseppe +5 more
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Global Policy, EarlyView.ABSTRACT This article explores the current controversies surrounding the European Ariane launcher and its implications for the future of European space governance. The Ariane program, historically a symbol of European technopolitical integration, faces mounting challenges due to delays, rising costs and increasing competition from private actors like ...
Nina Klimburg‐Witjes, Joseph Popper
wiley +1 more source
Numerical modelling of hybrid rocket boundary layer combustion [PDF]
openL'obiettivo di questo elaborato è quello di modellare numericamente la combustione all’interno dello strato limite dei motori ibridi con il fine di determinare, oltre ai parametri classici della balistica interna, anche l’efficienza di impiego del ...
BUREL, ANDREA
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