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Parameterization of magnetic nozzle flow physics for an in-space propulsion application
42nd AIAA Plasmadynamics and Lasers Conference, 2011The e ciency of a magnetic nozzle in converting thermal energy into directed axial energy is dependent on several factors, most notably on how and where the plasma separates or \detaches" from the nozzle. A detailed knowledge of the physics of this detachment process is presently lacking, but is necessary in order to optimize magnetic nozzle design for
Daniel Araya +3 more
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Investigation of a spray cooling system with two nozzles for space application
Applied Thermal Engineering, 2015Abstract This paper presents a novel spray cooling system applicable to space thermal management systems. Using porous foamed copper, this cooling system is integrated with phase-change microfluidic cooling tactics, able to realize liquid loop control and vapor–liquid separation (VLS) in microgravity due to capillary forces and superhydrophilicity ...
Ji-Xiang Wang +6 more
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Effect of Nozzle Spacing on Nitrogen-Oxide Emissions and Lean Operability
AIAA Journal, 2016Nitrous-oxide emissions and the equivalence ratio resulting in lean extinction of two adjacent gas turbine fuel/air nozzles are measured as the spacing between the two nozzles is varied. Two swirl-stabilized nozzle types are tested: a high-stability pilot design, and a low-emission design with a much lower swirl number. Jet A is used as the fuel.
Brian Dolan +4 more
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A CFD Investigation on the Nozzle of Orifices Distributing in Different Space Layers
SAE Technical Paper Series, 2008<div class="htmlview paragraph">A series calculation methodology from the injector nozzle internal flow to the fuel spray was applied to investigate the internal flow and spray of a nozzle whose orifices distributed in different space layers.
Huiyong Du, Jianxin Liu, Jinping Tang
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Applied Acoustics, 2014
Abstract Acoustic emissions were characterized for fourteen, 8 × 8 arrays of axisymmetric supersonic jets experimentally. The nozzle diameters ranged from 3.2 mm (1/8 in.) to 6.4 mm (1/4 in.) and the hole-to-hole spacing ( S ) over hole diameter ( d ), or the S / d ratios ranged from 1.44 to 3.
Ian S. Coltrin +3 more
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Abstract Acoustic emissions were characterized for fourteen, 8 × 8 arrays of axisymmetric supersonic jets experimentally. The nozzle diameters ranged from 3.2 mm (1/8 in.) to 6.4 mm (1/4 in.) and the hole-to-hole spacing ( S ) over hole diameter ( d ), or the S / d ratios ranged from 1.44 to 3.
Ian S. Coltrin +3 more
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Space Shuttle main engine nozzle-steerhorn dynamics
22nd Structures, Structural Dynamics and Materials Conference, 1981On two occasions during the Space Shuttle main engine development, the LH2 feedline (called the steerhorn, because of its shape) failed during the cutoff transient. A dynamic test was undertaken, and an analytical model was developed and correlated to the dynamic test.
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Space Shuttle Main Engine nozzle thermal protection system
20th Thermophysics Conference, 1985Two of the three Space Shuttle Main Engine (SSME) nozzles are exposed to significant reentry aeroheating loads. To ensure reusability of the Nozzle Assembly, the nozzle primary structure must not exceed specific temperature limits. Due to the thermal, pressure, and dynamic flexing of the nozzle during a mission cycle, an appropriate insulating system ...
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An advanced nozzle for space motor
16th Joint Propulsion Conference, 1980P. DONGUY, R. ELLIS
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Effect of Nozzle Spacing in Supersonic Twin Impinging Jets
AIAA Journal, 2022Yogesh Mehta +4 more
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