1–20 von 428 Ergebnissen
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    Existence of Infinitely Many Optimal Iso-Impulse Trajectories in Two-Body Dynamics

    Saloglu, Keziban / Taheri, Ehsan / Landau, Damon | AIAA | 2023

    The question of how many impulses are necessary to optimize a transfer-type maneuver has remained open for decades. Recently, the

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    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Propulsion System

    Research on Surface Treatment Coating on Titanium Alloy Based on Laser Cladding Technology

    al Muin, Abdullah / Chand, Dharmahinder Singh / Malhi, Gurmail Singh et al. | SAE Technical Papers | 2023
    material powder is good self-fluxing, has high-temperature resistance, and is analytically pure with 200 mesh. The chemical properties of Ni ...
    Verlag: Society of Automotive Engineers , SAE International

    Numerical Investigation of Diffusers in Arc-Heated Wind Tunnel: Introducing a Novel and Efficient Hypersonic Diffuser

    Sol Baek, Jin / Choi, Daesan / Kim, Kyu-Hong | ASCE | 2022
    and a second-throat cylindrical diffuser of a large-scale arc-heated wind tunnel with a Mach number 6 nozzle. The length of the diffuser was ...
    Verlag: American Society of Civil Engineers

    Vertical Transport of Lunar Regolith and Ice Particles Using Electrodynamic Traveling Wave

    Kawamoto, Hiroyuki / Hata, Kazuhiro / Shibata, Takahiko | ASCE | 2021
    from the lunar surface, chemical and physical forms, and the amount of water, is unclear, the Japan Aerospace Exploration Agency (JAXA) is ...
    Verlag: American Society of Civil Engineers

    Vertical Transportation of Lunar Regolith and Ice Particles Using Vibrating Tube

    Kawamoto, Hiroyuki / Kubo, Keita / Kikumiya, Ryo et al. | ASCE | 2021
    utilizing a vibration transportation mechanism that realizes the lifting of particles to physical and chemical analyzers installed on the rover. In ...
    Verlag: American Society of Civil Engineers

    Attitude-Orbit Cooperative Control for Small-Scale Spacecraft with Chemical Propulsion: Adaptive Sliding Mode Control Based on Neural Network

    Freier Zugriff
    Wang, Guogang / Liu, Keping / Sun, Zhongbo et al. | ASCE | 2020
    by orbit transfer of small satellites with chemical propulsion. The changing rule of satellite fuel consumption rate and moment of inertia ...
    Verlag: American Society of Civil Engineers

    Performance Impacts of Metal Additive Manufacturing of Very Small Nozzles

    Freier Zugriff
    Tommila, Christopher D. / Hartsfield, Carl R. / Redmond, Joel J. et al. | ASCE | 2020

    For small satellite electrothermal or chemical thrusters, nozzle throat diameters may be less than 1 mm. At these

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    Verlag: American Society of Civil Engineers

    Properties of De-Icing Agents for Use on Paved Airfield Pavements After Their Expiration Dates

    Freier Zugriff
    Rumak Aleksandra / Kowalska Danuta / Kowalewska Agata | DOAJ | 2020
    The NO-17-A205:2017 “Airfield maintenance in winter. Use of de-icers. Requirements and tests” Military Standard is applicable at Polish ...
    Schlagwörter: physico-chemical properties

    Aerothermodynamic Assessment of Spiked Configuration for Drag Reduction at Hypersonic Speeds

    Kumar, Shailendra / Kulkarni, Vinayak / Jammy, Satya Pramod | ASCE | 2020
    reduction effectiveness. In-house perfect gas and chemical nonequilibrium solvers were utilized. The analysis revealed that flow separation and ...
    Verlag: American Society of Civil Engineers

    Vibration Transport of Lunar Regolith for In Situ Resource Utilization Using Piezoelectric Actuators with Displacement-Amplifying Mechanism

    Kawamoto, Hiroyuki | ASCE | 2020
    . Lunar regolith is the most promising substance that can be used as a building material; its chemical composition includes metals, oxygen, helium ...
    Verlag: American Society of Civil Engineers

    Multivariate Comparison of Lunar Soil Simulants

    Zarzycki, Paweł K. / Katzer, Jacek | ASCE | 2019
    used to enable large-scale lunar research programs. They are supposed to be precise copycats of lunar soil in chemical composition, mineralogy ...
    Verlag: American Society of Civil Engineers

    Methods and tools for the characterisation of a generic jet fuel

    Richter, S. / Braun-Unkhoff, M. / Kathrotia, T. et al. | Springer Verlag | 2019
    properties. The development of a chemical kinetic reaction mechanism able to describe the oxidation of a generic fuel consisting of only a few ...

      Methods and tools for the characterisation of a generic jet fuel

      Richter, S. / Braun-Unkhoff, M. / Kathrotia, T. et al. | Online Contents | 2019
      a synthetic jet fuel from scratch with preselected and well-defined physical and chemical properties. The development of a chemical kinetic ...

    Modelling Consequences of Maritime Critical Infrastructure Accidents

    Freier Zugriff
    Bogalecka Magda | DOAJ | 2019
    and prediction. The model also includes the cost analysis of losses associated with these chemical releases. Further, under the assumption of ...
    Schlagwörter: cost of losses

    Characterization of Deposits Collected from Plugged Fuel Filters

    Erlandsson, Anders Christiansen / Csontos, Botond / Bernemyr, Hanna et al. | SAE Technical Papers | 2019
    filters as well. To better understand the process of filtration, awareness of the different possible contaminants from the field is needed. This ...
    Verlag: Society of Automotive Engineers , SAE International

    Solar Sintering for Lunar Additive Manufacturing

    Fateri, Miranda / Meurisse, Alexandre / Sperl, Matthias et al. | ASCE | 2019

    Additive manufacturing (AM) is one of the most promising techniques for on-site manufacturing on extraterrestrial

     ...
    Verlag: American Society of Civil Engineers

    Ecological Safety of the Baltic Sea in the Aspects of Corrosive Reprocessing of Containers with Toxic Warfare Agents

    Freier Zugriff
    Fabisiak Jacek / Jurczak Wojciech / Szubrycht Grażyna et al. | DOAJ | 2018
    Issue of Corrosion of chemical ammunition dumped in Baltic Sea after WW2 is actual because of recent accidents involving contamination of ...

    Prototype of the expert tribological diagnostic system of turbine engine

    Freier Zugriff
    Borowczyk Henryk / Zboiński Marek / Jóźwiak Przemysław et al. | DOAJ | 2018
    . The database consists of the results of tests on the chemical composition and concentration of the wear products in the oil sample as well as ...

    Durability of airfield pavement cement concrete in the presence of de-icing agents

    Freier Zugriff
    Kowalska Danuta / Rumak Aleksandra | DOAJ | 2018
    resistance to frost and chemical deicing agents determine the durability of cement concrete pavement. An increase in the premature deterioration of ...

    Critical physicochemical properties of lubricating oils for aviation applications and their significance in terms of flight safety

    Freier Zugriff
    Skolniak Marta / Turlej Anna | DOAJ | 2018
    reliability. It also points out the requirements for these products in relation to the operating conditions and the chemical composition of a product. ...

    New Type of Sensitivity Analysis Using Bayesian Approach with Artificially Designed Data

    Miki, Kenji | AIAA | 2018

    A new type of sensitivity analysis is proposed with the help of a Bayesian approach. The main idea is the use of two calibration data

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    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Kinetics