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Publikationen von Professorinnen und Professoren der HAW Hamburg

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Dieter Scholz
Aircraft Cabin Air and Engine Oil - An Engineering View
Journal of Health and Pollution, 9(24):93-98
Dezember 2019
ISSN: 2156-9614

Schlüsselwörter: aeronautics, airplanes, aircraft, aerospace engineering, turbofan engine, aircraft cabins, cabin air, passenger, oil, air conditioning, bleed air

Marker: TI-FF

Zusammenfassung: Almost all passenger jet aircraft today use potentially contaminated bleed air for cabin ventilation. A detailed look at the design of engine bearings, their lubrication and sealing reveals that jet engines leak small amounts of oil by design and not only in failure cases. An equation is derived to calculate the concentration of a possible cabin air contamination. Results show good agreement with measured concentrations of hydrocarbons in aircraft cabins under normal conditions. The solution to the problem of cabin air contamination is a bleed free design. Other partial remedies are briefly discussed.

Levin Schilling und Peter Dalhoff
Piezoelectric Patch Transducers: Can alternative sensors enhance bearing failure prediction?
Journal of Physics: Conference Series, 1356(012015)
25 Oktober 2019

Marker: TI-M+P

Dieter Scholz
DGLR-Weiterbildung "Flugzeugentwurf"
Luft- und Raumfahrt, 40(3):38-39
Juli 2019

Schlüsselwörter: Flugzeug, Entwurf, Luftverkehr, Zulassung, Anforderungen, Flugbetrieb, Umwelt, Kraftstoffverbrauch, Kosten, DGLR, HAW Hamburg, Airbus

Marker: TI-FF

Zusammenfassung: Im Flugzeugentwurf vereint sich das gesamte Wissen des Flugzeugbaus. Denn ein neues Flugzeug muss sich sowohl innerhalb des Luftverkehrssystems als auch im multimodalen Verkehr behaupten. Die Flugzeugparameter werden dabei ausgehend von Anforderungen wie Nutzlast und Reichweite so ermittelt, dass die Kosten beim Betrieb des Flugzeugs und dessen Umweltbelastung minimiert werden - eine hochkomplexe Aufgabe. Wie das Vorgehen beim Entwurf von Flugzeugen unter Berücksichtigung der Zulassungsvorschriften genau abläuft, lernen die Teilnehmer des DGLR-Weiterbildungskurses „Flugzeugentwurf", der vom 9. bis 12. September 2019 im ZAL TechCenter in Hamburg stattfindet.

Maximilian Otto Heinrich Schutzeichel, Thomas Kletschkowski, Peter Linde und Leif E Asp
Experimental characterization of multifunctional polymer electrolyte coated carbon fibres
Functional Composites and Structures, 1(2)
12 April 2019

Schlüsselwörter: thermo-mechanical testing, structural batteries, material characterization

Marker: TI- F+F

Zusammenfassung: Multifunctional structures like the structural energy storage are investigated for enhanced lightweight design. Polymer electrolyte coated carbon fibres (PeCCF) function as a battery half-cell, combining negative electrode and structural electrolyte of the energy storage. The new material combination results in unknown mechanical and multiphysical effective characteristics. Looking forward to future multifunctional CFRP structures made from PeCCF, an influence of the multiphysical PeCCF properties on the CFRP laminate characteristics is expected. This paper presents experimental work, focusing on the first multiphysical characterization of state of the art PeCCF. Thereby, physical effects like the thermo-mechanical coupling in a temperature domain of 193 K??<T??<??720 K and the temperature induction by resistive heating are characterized. Important finding is a temperature dependent complex modulus of the material compound, which is related to the temperature dependent mechanical behaviour of the polymer coating. In addition, the ability to adapt and to predict the materials temperature, which is influenced by resistive heating, is shown. Furthermore, first indications of durability of the coating after cyclic mechanical loading are presented. In addition, new experimental methods for PeCCF investigation are proposed, e.g. the application of conductive epoxy resin for electrical connections.

Fabian Anstock, Marcel Schütt und Vera Schorbach
A new approach for comparability of two- and three-bladed 20 MW offshore wind turbines
Journal of Physics: Conference Series,

Marker: CC4E

Levin Schilling und Peter Dalhoff
Piezoelectric Patch Transducers: Can alternative sensors enhance bearing failure prediction?
Journal of Physics: Conference Series,

Marker: TI-MP


Peter Kuhn, Simon Ressel und Thorsten Struckmann
Stability of VFB SoC monitoring using electrolyte potential and density
International Flow Battery Forum
09.-11. July 2019
The International Flow Battery Forum

Marker: M&P

Timo Häckel, Philipp Meyer, Franz Korf und Thomas C. Schmidt
Software-Defined Networks Supporting Time-Sensitive In-Vehicular Communication
Kuala Lumpur, Malaysia
Proc. of the IEEE 89th Vehicular Technology Conference: VTC2019-Spring
Verlag: IEEE Press, Piscataway, NJ, USA

Marker: TI-I

Zusammenfassung: Future in-vehicular networks will be based on Ethernet. The IEEE Time-Sensitive Networking (TSN) is a promising candidate to satisfy real-time requirements in future car communication. Software-Defined Networking (SDN) extends the Ethernet control plane with a programming option that can add much value to the resilience, security, and adaptivity of the automotive environment. In this work, we derive a first concept for combining Software-Defined Networking with Time-Sensitive Networking along with an initial evaluation. Our measurements are performed via a simulation that investigates whether an SDN architecture is suitable for time-critical applications in the car. Our findings indicate that the advanced control overhead of SDN can be added without a delay penalty for the TSN traffic when protocols are mapped properly.

Dieter Scholz
A Quick Introduction to the Problem of Cabin Air Contamination
Gespräch kontaminierte Kabinenluft
Berlin, Deutscher Bundestag (Unter den Linden 71, Raum 223)

Marker: TI-FF

Thorben Schüthe, Ahmed Albounyan und Karl-Ragmar Riemschneider
Two-Dimensional Characterization and Simplified Simulation Procedure for Tunnel Magnetoresistive Angle Sensors
Sensors Applications Symposium SAS 2019
Sophia Antipolis, France
March 11-13, 2019
IEEE (Hrsg.) Proc. IEEE Sensors Applications Symposium 2019

Schlüsselwörter: Magnetic Sensors, Characterisation, Cross Coil Setup, Tunnel Magnetoresistive Sensors, TMR-Sensor, Vortex-TMR-Sensors

Marker: TI-I

Zusammenfassung: A method and a measurement setup is described, that is suitable for the rapid characterization and simple modeling of magnetic sensor components for automotive electronics. We apply the the two-dimensional characteristic diagram method for recent angle sensors. This method is already known for incremental speed sensors [1]–[4]. The base of data ac- quisition for the characteristic diagram is an automated scanning procedure with cross-coil-setup. We improve the usable range of the cross-coil-setup by optimized coil shape. Furthermore the two-dimensional excitation with magnetic field components H x and H y is adapted to the field rotation of angle sensors. Two examples with recently launched sensor products based on the promising tunnel magnetoresistance (TMR) effect show how this method can be used to effectively support development work, such as the design of the moving permanent magnet, the mechanical design or a tolerance test.

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Letzte Änderung: 23.01.15

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