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Showing 1 to 20 of 20 for “"hybrid rocket"”.
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Hybrid Rocket Motor Scaling Process
<p>Hybrid rocket propulsion technology shows promise for the next generation of sounding rockets and small launch vehicles. This paper seeks to provide details on the process of developing hybrid propulsion systems to the academic and amateur rocket communities to assist in future research and …
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Unsteady Internal Ballistics of a Hybrid Rocket
… progress made in the field of space tourism, hybrid rocket engines have gained a renewed interest due to their simplicity, low cost, operational flexibility, and safety. The flow in the ports of a hybrid rocket motor involves several coupled unsteady phenomena like moving walls, combustion in …
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Optimal Sizing and Control of Hybrid Rocket Vehicles
… work, a genetic algorithm is used to optimize a hybrid rocket engine in order to minimize the propellant required for a specific mission. In a hybrid rocket engine, the mass flow rate of the oxidizer can be throttled to enhance the performance of the rocket. First, an analysis of the internal …
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Development of Lattice-Augmented Fuels for Hybrid Rocket Applications
Hybrid rocket propulsion systems, which utilize a solid fuel and liquid oxidizer, are among the safest and simplest rocket propulsion systems that can be developed. Despite these attractive qualities, the commercialization of the technology has been slow due to difficulties associated with scaling …
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Novel Gel-Infused Additively Manufactured Hybrid Rocket Solid Fuels
… costs, vehicle design and mission capabilities. Hybrid rockets are considered some of the safest forms of chemical propulsion. That factor alone makes hybrid rocket propulsion systems desirable options. Hybrid systems often benefit from multiple additional advantages over conventional solid and …
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Analysis of a Hybrid Rocket Burn Using Generalized Compressible Flow
<p>The analysis of square ports in a hybrid rocket is simple when compared to other complicated port geometries such as a wagon wheel configuration. In the present work, fuel grains with several ports in a hybrid rocket engine are analyzed by transforming the ports into equivalent square ports. As …
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Solid amine-boranes as high performance hypergolic hybrid rocket fuels
<p>Hypergolic hybrid rockets have the potential of providing systems that are simple, reliable, have high performance, and allow for energy management. Such a propulsion system can be applied to fields that need a single tactical motor with flexible mission requirements of either high speed to …
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Design And Fabrication Of A Full-featured Labscale Hybrid Rocket Engine
… and testing of a full-featured, Lab-Scale Hybrid Rocket Engine was not only envisioned to be the chosen method of putting student payloads into space, but to be an invaluable teaching resource. The subject of the present thesis is the analysis, design, development, integration and …
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The development and implementation of a hybrid rocket motor thrust stand to investigate the relationship between combustion chamber pressure and graphite rocket nozzle erosion in hybrid rocket motors
Rocket motors frequently implement carbon-based nozzle inserts to insulate the motor from the heat produced by combustion. Over time these inserts will erode due to oxidation at the surface wherein oxidizing species found in the combustion products react with the carbon to form carbon monoxide. It …
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Rayleigh Flow of Two-Phase Nitrous Oxide as a Hybrid Rocket Nozzle Coolant
… San Luis Obispo currently maintains a lab-scale hybrid rocket motor for which nitrous oxide is utilized as the oxidizer in the combustion system. Because of its availability, the same two-phase (gas and liquid) nitrous oxide that is used in the combustion system is also routed around the throat …
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Design and Analysis of a Reusable N2O-Cooled Aerospike Nozzle for Labscale Hybrid Rocket Motor Testing
… mons.calpoly.edu/cgi/ir_submit.cgi#_ftn1">[1]</a> hybrid rocket motor at Cal Poly-SLO.<a href="http://digitalcommons.calpoly.edu/cgi/ir_submit.cgi#_ftn2">[2]</a> The detailed design was based on the results of previous research involving cold-flow testing of annular aerospike nozzles and hot-flow …
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Investigation of Methods and Devices for Active Thrust Profile Control in Hybrid Rocket Engines through Oxidiser Flow Management
Research on thrust control in hybrid rocket engines (HREs) has gained renewed interest due to the growing demand for microsatellites and small launch vehicle operations, as well as the limitations of solid and liquid propulsion technologies. The ability to optimise the thrust profile is a key …
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CFD Study of Taylor-Like Vortices in Swirling Flows
… swirling flow behavior in the context of a hybrid rocket engine have been analyzed. While modeling the flow inside a cylindrical chamber using CFD, a similarity with the Taylor vortices instability has been observed. Similar to the classic Taylor-Couette flow system, a secondary flow field …
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Development, testing, and validation of a heat transfer model for bi-propellant liquid rocket engines
… characteristics in a bi-propellant liquid rocket engine is a time and resource intensive process. The highly unpredictable and turbulent nature of the combustion requires complex modeling to predict the temperatures and fluid properties. These properties are required to evaluate material …
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Aerospike Rocket Motor Structural Webbing
<p>A labscale hybrid rocket motor test stand has been developed for research at Cal Poly. The primary focus of research using this rig has been the development of regenerative cooling techniques using nitrous oxide as coolant and oxidizer, as well as validation of technologies relating to the …
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Controller Design for a Swirl Injection Hybrid Launch Vehicle
… this research arises from the new development of rocket engines which swirl combustion gases to gain combustion stability benefits, and in the case of hybrid rocket engines, fuel regression benefits as well. The stability of the launch vehicle dynamics due to the internal torque has not been …
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Experimental and Theoretical Study of Hypergolic Solid Fuel Ignition and Combustion with Hydrogen Peroxide
… ignition provides significant advantages for hybrid rockets by eliminating the need for conventional ignition devices, enabling rapid and reliable startup. This study investigates the ignition and combustion behaviors of hypergolic solid fuels (HSFs) using rocket-grade hydrogen peroxide (RGHP) …