Results 141 to 150 of about 1,875 (170)
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Monopropellant Thruster Exhaust Effects upon Spacecraft
Journal of Spacecraft and Rockets, 1971a = ion engine exhaust opening radius A = cross-sectional area Ann = Einstein coefficient B = absorption coefficient c = speed of light D = thruster exhaust diameter at the thruster exhaust plane e = electron charge E = energy f = absorption oscillator strength (Landenburg/value) h = Planck constant / = photon intensity J = inner quantum number k ...
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Fabrication of Catalyst-Insertion-Type Microelectromechanical Systems Monopropellant Thruster
Journal of Propulsion and Power, 2012Amicroelectromechanical systemsmonopropellant thruster having a design thrust of 100mNwas fabricated and tested. Hydrogen peroxide (90 wt%), which is a green propellant, was selected as the monopropellant. Platinumwas used to decompose the hydrogen peroxide, and it was coated on Al2O3 via impregnation.
Lee, JS Lee, Jeong-Sub +3 more
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Testing and Characterization of a Hydrogen Peroxide Monopropellant Thruster
Journal of Propulsion and Power, 2008In the present paper, the use of advanced catalytic beds on ceramic supports as a cost-effective alternative to metal screen reactors for the decomposition of high-concentration hydrogen peroxide in small monopropellant rockets is investigated. For this purpose, a reconfigurable test bench for the characterization of the operation and the propulsive ...
PASINI, ANGELO +4 more
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Verification of Contamination Predictions for Monopropellant Thrusters
1977Abstract : This paper represents the major results and conclusions of an AFRPL in-house analysis program set up to verify the capabilities of the monopropellant option of the CONTAM computer code for predicting plume contamination on sensitive spacecraft surfaces. The data used for verification was acquired in an AFRPL sponsored program at JPL. In that
Steven G. Wax, Larry P. Davis
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Flight performance of a high-impulse monopropellant thruster
Journal of Spacecraft and Rockets, 1976A discussion of flight experience obtained on a 250 lbf thrust monopropellant hydrazine thruster is presented. Consistent and highly predictable performance was achieved over the full range of operating conditions, and the catalyst bed resistance parameter was employed successfully in performance prediction.
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Green Monopropellant 100mN Thruster
AIAA Propulsion and Energy 2021 Forum, 2021Tim McKechnie +6 more
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A Combustion Stability Analysis for Catalytic Monopropellant Thrusters
Journal of Spacecraft and Rockets, 1972An analytical means of determining the low-frequency combustion stability for catalytic monopropellant thrusters has been presented. The use of frequency-analysis from feedback control systems is shown to predict the conditions of stable-unstable operation of a 2001bf hydrazine thruster.
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Performance Test of Hydrazine Decomposition Catalyst for Monopropellant Thruster
45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2009In general, thruster hot-firing test should be performed in vacuum condition to simulate space environment. However in case of this study, for reducing cost and development schedule, most performance tests were carried out in atmospheric conditions with continuous nitrogen purging, only baseline hot-firing tests were performed in vacuum conditions for ...
In-tae Kim +7 more
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$\hbox{MnO}_{2}$ Nanowire Embedded Hydrogen Peroxide Monopropellant MEMS Thruster
Journal of Microelectromechanical Systems, 2013Feasibility of chemically synthesized MnO2 nanowire catalyst embedded silicon microelectromechanical systems (MEMS) H2O2 monopropellant microthruster has been demonstrated. Due to exothermic reaction process, sustenance of thrust generation does not require any heating of propellant thus minimizing electrical power requirement.
Pijus Kundu +3 more
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Microcooling Channel Effect on a Monopropellant Microelectromechanical System Thruster Performance
Journal of Propulsion and Power, 2017AS MICROELECTROMECHANICAL system fabrication technology advances, the aerospace industry, in pursuing smaller, faster, and cheaper satellites, sees several opportunities for effective satellite operations. Miniature satellites with 1–10 and 10–100 kg masses are called nanosatellites and microsatellites, respectively; and they offer the advantages of ...
Huh, J, Kwon, S
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