Results 21 to 30 of about 1,875 (170)
Effect of Structural Materials on Monopropellant Thruster Propulsion Performance in Micro Scale
Aerospace, 2023 This paper reports on the effect of structural materials on heat loss-associated propulsion performance degradation of monopropellant thrusters in the micro scale.
Jeongmoo Huh, Ki Sun Park
doaj +1 more source
Monopropellant Thruster Exhaust Plume Contamination Measurements [PDF]
, 1977 The potential spacecraft contaminants in the exhaust plume of a 0.89N monopropellant hydrazine thruster were measured in an ultrahigh quartz crystal microbalances located at angles of approximately 0 deg, + 15 deg and + or - 30 deg with respect to the nozzle centerline. The crystal temperatures were controlled such that the mass adhering to the crystal
R. S. Passamaneck, R. K. Baerwald
openaire +1 more source
Provide a Predictive Model for the Preliminary Design of Swirl Injectors Based on Neuro-Fuzzy Model Thruster [PDF]
فصلنامه علوم و فناوری فضایی, 2019 the effect of the internal geometry of the injector of a low-thrust monopropellant thruster on the characteristics of the outlet liquid sheet, such as the liquid sheet thickness, the spray cone angle, the average output velocity, and its mass flow rate ...
Hadiseh Karimaei
doaj +1 more source
Energies, 2022 An experimental study was carried out on the ignition characteristics of the HAN/(Emim)(EtSO4) (hydroxylammonium nitrate and 1-ethyl-3-methyl-imidazolium ethyl sulfate) dual-mode ionic liquid monopropellant in chemical propulsion mode in model thrusters.
Jie Fang +5 more
doaj +1 more source
Development and testing of an additively manufactured monolithic catalyst bed for HTP thruster applications [PDF]
, 2016 Additive manufacturing (AM), also known as 3D printing, is a revolutionary manufacturing technology that has attracted many industries in the past two decades.
Adkins, N.J. +7 more
core +2 more sources
Aerospace, 2023 The article presents alternative metal-supported catalysts for decomposition of the highest-class hydrogen peroxide: 98%+ (Type 98 HP, according to MIL-PRF-16005F).
Pawel Surmacz, Zbigniew Gut
doaj +1 more source
Thermal Ignition of ADN‐Based Propellants
Propellants, Explosives, Pyrotechnics, Volume 44, Issue 9, Page 1096-1106, September 2019., 2019 Abstract Ammonium dinitramide (ADN, NH4+ N(NO2)2−) based monopropellants are extremely promising as hydrazine replacement. Thermal igniters are attractive for ADN thrusters as they allow a more prompt ignition and may be better suited for larger engines (100‐500 N) compared to the currently used preheated catalysts.
Michele Negri +2 more
wiley +1 more source
Sensitivity Analysis Based on Progressive LHS Applied to Hydrazine Catalyst Bed Design [PDF]
فصلنامه علوم و فناوری فضایی, 2019 Now, the required samples to achieve the specific precision of sensitivity analysis in design are performed based on trial and error methods. The purpose of this paper is to develop an approach for determining the number of the required sample to achieve
Mohammad N. Meibody +2 more
doaj +1 more source
Preliminary Assessment of Hydrogen Peroxide Gel as an Oxidizer in a Catalyst Ignited Hybrid Thruster
International Journal of Aerospace Engineering, Volume 2018, Issue 1, 2018., 2018 In regard to propulsion system applications, the stability of liquid propellants in long‐term storage is of increasing importance, and this had led to a greater interest in gelation technology. As part of a preliminary test to determine the feasibility of using a gel propellant in a rocket with a catalyst bed, a hybrid rocket with a catalyst reactor ...
Jeongmoo Huh +5 more
wiley +1 more source
Development of Busek 0.5N Green Monopropellant Thruster
, 2013 The monopropellant community has been actively pursuing low toxicity, "green" monopropellants for the past two decades. Of the large number of formulations developed, AF-M315E has received the most attention in the U.S. In comparison with hydrazine, AF-M315E offers improved Isp and density-Isp while being extremely stable and easy to handle.
Tsay, Michael +3 more
openaire +2 more sources