Results 41 to 50 of about 17,329 (212)
Review of Classical Diffusion-Limited Regression Rate Models in Hybrid Rockets
Aerospace, 2019 In this article, we undertake a concise review of several milestone developments in classical regression rate models of hybrid rocket motors. After a brief description of the physical processes entailed in hybrid rocket combustion, Marxman’s ...
Timothy Marquardt, Joseph Majdalani
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Genetic Algorithm Optimization of a Cost Competitive Hybrid Rocket Booster [PDF]
Performance, reliability and cost have always been drivers in the rocket business. Hybrid rockets have been late entries into the launch business due to substantial early development work on liquid rockets and later on solid rockets.
Story, George
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Experimental Study on the Mass Flow Rate of the Self-Pressurizing Propellants in the Rocket Injector
Aerospace, 2021 High vapor pressure propellants such as nitrous oxide are widely used in experimental hybrid and liquid rockets as they can be used in a self-pressurization mode, eliminating the need for external pressurization or pumps and simplifying the design of the
Tomasz Palacz, Jacek Cieślik
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An earth pole-sitter using hybrid propulsion [PDF]
, 2010 In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Becerra V. M. +8 more
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Characterization and manufacturing of a paraffin wax as fuel for hybrid rockets
Propulsion and Power Research, 2018 The hybrid propulsion performed with paraffin waxes exhibits most attractive capabilities compared to solid or liquid engines, e.g., throttleability and re-ignition, alongside higher regression rates compared to the conventional hydroxyl terminated ...
F. Piscitelli +4 more
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Analytical control laws for interplanetary solar sail trajectories with constraints [PDF]
, 2008 An indirect method is used to obtain an analytical control law for a spacecraft with a low-thrust propulsion system which is constituted by a solar sail coupled with a solar electric thruster. Constraints on the control inputs for such as the system need
McInnes, C.R., Uchiyama, Kenji
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Attitude stability and altitude control of a variable-geometry Earth-orbiting solar sail [PDF]
, 2016 A variable-geometry solar sail for on-orbit altitude control is investigated. It is shown that, by adjusting the effective area of the sail at favorable times, it is possible to influence the length of the semi-major axis over an extended period of time.
Ceriotti, Matteo +2 more
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The HyEnD stern hybrid sounding rocket project [PDF]
Progress in Propulsion Physics – Volume 11, 2019 The student team Hybrid Engine Development (HyEnD) of the University of Stuttgart is taking part with the Institute of Space Systems (IRS) in the DLR educational program STERN (Studentische Experimentalraketen). This program supports students at German universities to design, build, and launch an experimental rocket within a 3-year project time frame ...
Kobald, Mario +5 more
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Needs assessment of gossamer structures in communications platform end-of-life disposal [PDF]
, 2013 The use of a gossamer structure is considered in application to end-of-life disposal of communications platforms. A wide-ranging survey of end-of-life disposal techniques and strategies is presented for comparison against a gossamer structure prior to a ...
Bewick, Charlotte +2 more
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