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Showing 1 to 20 of 21 for “"Liquid oxygen"”.
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Feasibility of producing lunar liquid oxygen
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Explosive property of aluminum powder liquid oxygen mixture
… explosion of a mixture of aluminum powder and liquid oxygen when fired without the use of a fixed detonator.</p>
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Numerical investigation of the combustion of liquid oxygen droplets in an environment of hydrogen under microgravity conditions
… more effective and better cryogenic powered liquid rocket engines, it is vital to undertake further studies to better understand the behavior of the LOX/LH2 system. This work studies the configuration of a single liquid oxygen droplet surrounded by gaseous hydrogen diluted with helium. A …
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Transplant organ preservation cooler
… system which will be powered by boiled off oxygen from a liquid oxygen source. The design of the preservation cooler pump and temperature control system are presented. Results of tests proving the successful operation of the preservation cooler prototype are also presented.
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Cost Optimized Logistics for Commercial Operations in Low Earth Orbit and Cislunar Space
… lunar in-situ resource utilization (ISRU) liquid oxygen generation system. These mission architectures were modelled and simulated in SpaceNet which first analyzed for feasibility and then were processed by COST-O. This data was used to make financial forecasts and were analyzed for cost …
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Preliminary design of a 1 kN liquid propellant rocket engine testing platform
This work presents a preliminary design of a liquid rocket engine test platform to support research into liquid propulsion systems and rocket engine components, including injectors, ignition systems, combustion chambers and engine cooling systems. The liquid propellants, specifically liquid oxygen …
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Mechanistic modeling of increased oxygen transport using functionalized magnetic fluids in bioreactors
Absorption of gases into a liquid is of crucial importance to multiphase reactions because diffusion of a sparingly soluble gas across a gas-liquid interface generally limits the relevant reaction rates. Pertinent examples of multiphase reactions that have found application in the chemical and …
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Quality changes of aquacultured hybrid striped bass fillet meat resulting from reduction of post-harvest metabolism
… sump tanks, rotating biological contactors and liquid oxygen injection and underground U-tubes for aeration. Fish were anesthetized by two methods after harvest to reduce metabolic activity. Hybrid striped bass were either held in cooled water or water with elevated CO<sub>2</sub> levels prior …
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Analyses of flame response to acoustic forcing in a rocket combustor
High frequency combustion instabilities in liquid propellant rocket engines are spontaneously occurring pressure fluctuations that are coupled with unsteady combustion processes. Under the right conditions the unsteady fluctuations can grow to a point where they affect the operation of the …
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Optimisation of ozone generation using dielectric barrier discharge
… at cryogenic temperature of -183 °C using liquid oxygen. The liquid ozone is produced and the highest ozone efficiency achieved is ~ 460 g/kWh. The ozone dissociation reactions involving atomic oxygen and free electrons and the humidity effect at cryogenic temperature of -183 °C were …
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Characterisation, Treatment and Utilisation of the Effluent from an Intensive Fish Farm
… were carbon dioxide and suspended solids. The oxygen consumption of the fish was also measured. Water treatment by lagooning did not produce a satisfactory effluent and the reasons for the failure of the lagooning system are are discussed. The effluent discharge consent standards imposed by the …
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Cryogenic Shape Memory Alloy Actuators For Spaceport Technologies: Materials Characterization And Prototype Testing
… to provide a variable conductive pathway between liquid methane and liquid oxygen dewars in order to passively regulate the methane temperature. Development of the switch concept has been continued in this work by utilizing Ni-Ti-Fe as the active SMA element. Ni-Ti-Fe exhibits the shape memory …
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Tartaglia, Zigzag et Flips : les particules denses à haut Reynolds
… with the particular case of a Leidenfrost liquid ring. A such object is created by approaching an annular magnet from a paramagnetic liquid oxygen drop. The closing dynamics of this non wetting ring is described with by the way of a potential flow approach.
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Design, Fabrication And Testing Of A Shape Memory Alloy Based Cryogenic Thermal Conduction Switch
… switch for operation between dewars of liquid methane and liquid oxygen in a common bulk head arrangement for NASA. The design of the thermal conduction switch is based on a biased, two-way SMA actuator and utilizes a commercially available NiTi alloy as the SMA element to demonstrate …
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Winter Limnological Conditions in a PRAIRIE Pothole and the Application of Molecular Oxygen
… winter, and reaeration utilizing molecular oxygen was evaluated as a practical method to prevent winterkill. Ice and snow conditions after 20 December, 1977 allowed little light penetration, and phytoplankton numbers (6174/ml to 1668/ml) and chlorophyll concentration (46.6 mg/L to 14.1 mg/L) …
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Molten Regolith Electrolysis reactor modeling and optimization of in-situ resource utilization systems
… architectures. In particular, producing oxygen from lunar regolith holds great promise for maintaining life support systems and enabling orbital refueling of chemical propulsion systems to reduce launch vehicle mass. Unfortunately, significant uncertainty as to the mass, power, and …
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Sodium chlorate oxygen generation for fuel cell power systems
… investigated the use of sodium chlorate as an oxygen storage medium for use in underwater fuel cell power systems. Research into improving hydrogen storage systems is the primary concern when designing fuel cell systems with access to atmospheric oxygen. However, in an underwater environment, …
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Structure and stabilization of cryogenic spray flames
… Engines using cryogenic fuels, such as liquid oxygen and hydrogen, are used for most missions since they combine high performance with a relatively light structure. The design of such motors has, until recently, been based on empirical results from systematic tests. Future design will …
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Self-sealing of thermal fatigue and mechanical damage in fiber-reinforced composite materials
… tanks provide a promising method of storage for liquid oxygen and hydrogen for aerospace applications. The inherent thermal fatigue of these vessels leads to the formation of microcracks, which allow gas phase leakage across the tank walls. In this dissertation, self-healing functionality is …
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Numerical Modelling of LOX Droplet Combustion in Hydrogen under Micro-gravity Conditions
One of the most frequent liquid rocket propellant configurations is LOX/LH2. Specifically,since this fuel/oxidizer mixture produces an extremely high specific impulse (Isp) with only water vapor as an exhaust. This makes LOX combustion research critical for improving combustion efficiency and …
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