1–20 von 38 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

    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

    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

    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

    Probabilistic process simulation to predict process induced distortions of a composite frame

    Liebisch, M. / Hein, R. / Wille, T. | Springer Verlag | 2018
    distortions and residual stresses of composite structures is developed, while taking into account probabilistic variations. The simulation strategy is ...

      Probabilistic process simulation to predict process induced distortions of a composite frame

      Liebisch, M. / Hein, R. / Wille, T. | Online Contents | 2018
      Abstract Within this work, an enhanced simulation strategy for predicting process-induced distortions and residual stresses of composite ...

    Paths to alternative fuels for aviation

    Richter, Sandra / Braun-Unkhoff, Marina / Naumann, Clemens et al. | Springer Verlag | 2018
    conversion of biogenic feedstock into alternative jet fuel is based on microbial, thermal and/or chemical breakdown of larger (bio)-molecules into ...

      Paths to alternative fuels for aviation

      Richter, Sandra / Braun-Unkhoff, Marina / Naumann, Clemens et al. | Online Contents | 2018
      microbial, thermal and/or chemical breakdown of larger (bio)-molecules into smaller ones, followed by the catalytic formation of fuel molecules and ...

    Corrosion of ammunition dumped in the Baltic Sea

    Freier Zugriff
    Jurczak Wojciech / Fabisiak Jacek | DOAJ | 2017
    The article presents the preliminary results of a research aimed at preparation for the extraction of chemical ammunition immersed after ...

    State estimation for reactive Euler equation by Kalman Filtering

    Schäpel, Jan- Simon / Wolff, Sascha / Schulze, Philipp et al. | Springer Verlag | 2017
    combination with chemical kinetics is another focus of this contribution. ...

      State estimation for reactive Euler equation by Kalman Filtering

      Schäpel, Jan- Simon / Wolff, Sascha / Schulze, Philipp et al. | Online Contents | 2017
      Unscented Kalman Filter used to estimate quantities which are of interest for the combustion process inside the considered combustion tube, i.e ...

    About the interaction between composition and performance of alternative jet fuels

    Braun-Unkhoff, Marina / Kathrotia, Trupti / Rauch, Bastian et al. | Springer Verlag | 2015
    ; however, the amount and type of hydrocarbons (chemical family) differ considerably. The question is how the composition of the fuel will affect ...

      About the interaction between composition and performance of alternative jet fuels

      Braun-Unkhoff, Marina / Kathrotia, Trupti / Rauch, Bastian et al. | Online Contents | 2015
      hydrocarbons (chemical family) differ considerably. The question is how the composition of the fuel will affect its suitability and performance: (i ...

    Generating Test Cases with 100-Percent Requirements Coverage Using Design of Experiments

    Jeppu, Yogananda / Rey, Gonzalo J. / Apte, Prakash R. | AIAA | 2014
    -control programs of commercial aircraft like the Boeing 747-8 and Airbus A350 XWB are verified and validated using model-based test methods. These ...
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Design of Experiments

    Alternative fuels in aviation

    Braun-Unkhoff, Marina / Riedel, Uwe | Springer Verlag | 2014
    . The data are used for the validation of a detailed chemical reaction mechanism following the concept of a surrogate. Such validated reaction ...

      Alternative fuels in aviation

      Braun-Unkhoff, Marina / Riedel, Uwe | Online Contents | 2014
      detailed chemical reaction mechanism following the concept of a surrogate. Such validated reaction models able to describe and to predict reliably ...

    Effectiveness Assessment of Tactical Laser Engagement Scenarios in the Lower Atmosphere

    Fiorino, Steven T. / Randall, Robb M. / Echeverria, Francesco J. et al. | AIAA | 2013
    Verlag: The American Institute of Aeronautics and Astronautics
    Schlagwörter: Chemical Oxygen Iodine Lasers

    High performance modeling of atmospheric re-entry vehicles

    Martin, Alexandre / Scalabrin, Leonardo C. / Boyd, Iain D. | Tema Archiv | 2012
    of chemical species are involved. The CFD result demonstrates the need for such chemistry model when modeling the flow field around an ...

    Nautical risk assessment for LNG operations at the port of koper

    Perkovic, Marko / Gucma, Lucjan / Przywarty, Marcin et al. | Tema Archiv | 2012
    increased LNG activities. The ports in the area are host to a variety of vessels, including containers, tankers and chemical carriers, general cargo ...

    Masterbox: new concept for a dynamic autoclave process control

    Liebers, N. / Ucan, H. / Kühn, M. et al. | Springer Verlag | 2011
    multiple scenarios of different control strategies. The so called MASTERBOX is the centre piece of this new process control concept. It serves as ...
    Schlagwörter: Chemical Shrinkage

      Masterbox: new concept for a dynamic autoclave process control

      Liebers, N. / Ucan, H. / Kühn, M. et al. | Online Contents | 2011
      based on sensors obtaining quality-relevant process parameters and a real time process simulation able to predict multiple scenarios of ...
      Schlagwörter: Chemical Shrinkage