Browsing by Subject "Aircraft engines"

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  • Adaptive cutting force control on a milling machine with hybrid axis configuration 
    Denkena, Berend; Flöter, F. (Amsterdam : Elsevier BV, 2012)
    In the re-contouring process of aircraft engine components, the unknown geometry and inhomogeneous material properties of the workpiece are major challenges. For this reason a new repair process chain is supposed which ...
  • Advanced high pressure turbine blade repair technologies 
    Alfred, Irene; Nicolaus, Martin; Hermsdorf, Jörg; Kaierle, Stefan; Möhwald, Kai; Maier, Hans Jürgen; Wesling, Volker (Amsterdam : Elsevier B.V., 2018)
    Components in aircraft engines and gas turbines are exposed to extreme conditions in order to increase performance and efficiency of the overall engine, hence there is an increasing need for cost-effective and time-efficient ...
  • Aerodynamic damping of composite UHBR fans under the consideration of acoustic intake reflections 
    Gößling, Jan; Seume, Joerg R.; Flüh, Jan Peter; Paletta, Nicola; Eggers, Torben; Friedrichs, Jens; Natale, Nunzio (New York, N.Y. : The American Society of Mechanical Engineers, 2022)
    Steadily rising regulations and demands on aeroengines require the continuous reduction of CO2 emissions. Among other factors, particularly the weight reduction of the engine as well as synergetic engine-airframe integration ...
  • Approaches for improving cutting processes and machine too in re-contouring 
    Denkena, Berend; Boess, V.; Nespor, D.; Rust, F.; Floeter, F. (Amsterdam : Elsevier, 2014)
    Re-contouring in the repair process of aircraft engine blades and vanes is a crucial task. Highest demands are made on the geometrical accuracy as well as on the machined surface of the part. Complexity rises even more due ...
  • Crack repair of single crystal turbine blades using laser cladding technology 
    Rottwinkel, Boris; Nölke, Christian; Kaierle, Stefan; Wesling, Volker (Amsterdam : Elsevier B.V., 2014)
    The formation of cracks in single crystal (SX) turbine blades is a common problem for aero-engines. To repair cracks, which are located under the tip-area, a new method is to clad with single-crystal-technology. This ...
  • Design considerations for the electrical power supply of future civil aircraft with active high-lift systems 
    Mueller, J.-K.; Bensmann, A.; Bensmann, B.; Fischer, T.; Kadyk, T.; Narjes, G.; Kauth, F.; Ponick, B.; Seume, J.R.; Krewer, U.; Hanke-Rauschenbach, R.; Mertens, A. (Basel : MDPI AG, 2018)
    Active high-lift systems of future civil aircraft allow noise reduction and the use of shorter runways. Powering high-lift systems electrically have a strong impact on the design requirements for the electrical power supply ...
  • Experimental and Numerical Based Defect Detection in a Model Combustion Chamber through Machine Learning 
    von der Haar, Henrik; Ignatidis, Panagiotis; Dinkelacker, Friedrich (Tōkyō : [Verlag nicht ermittelbar], 2021)
    A disturbed combustion process in an aircraft engine has an impact on the internal flow and leads to specific irregularities in the species distribution in the exhaust jet. Measuring this distribution provides information ...
  • Mechanical Integrity of Steel Discs with Corrosion Pits 
    Urbano, Jose; Golowin, Andrej; Löhnert, Stefan; Bestle, Dieter (Les Ulis : EDP Sciences, 2018)
    Currently, prediction of crack initiation by corrosion pits is only possible by assuming regular geometrical shapes, such as semi-spheres or semi-ellipsoids. Moreover, typical fatigue life diagrams associate the crack ...
  • A study on electrofuels in aviation 
    Goldmann, Andreas; Sauter, Waldemar; Oettinger, Marcel; Kluge, Tim; Schröder, Uwe; Seume, Jörg R.; Friedrichs, Jens; Dinkelacker, Friedrich (Basel : MDPI AG, 2018)
    With the growth of aviation traffic and the demand for emission reduction, alternative fuels like the so-called electrofuels could comprise a sustainable solution. Electrofuels are understood as those that use renewable ...
  • Surface roughness of real operationally used compressor blade and blisk 
    Gilge, Philipp; Kellersmann, Andreas; Friedrichs, Jens; Seume, Jörg R. (London : SAGE Publications Ltd., 2019)
    Deterioration of axial compressors is in general a major concern in aircraft engine maintenance. Among other effects, roughness in high-pressure compressor reduces the pressure rise and thus efficiency, thereby increasing ...