TY  - JOUR
A1  - Mertens, Josef
T1  - Aerodynamische Ziele des Adaptiven Flügels (ADIF).
JF  - DGLR-Jahrbuch 1998 Bd. 1
Y1  - 1998
N1  - DGLR-JT98-213
SP  - 47
EP  - 52
ER  - 
TY  - JOUR
A1  - Gerhardt, Hans Joachim
A1  - Kramer, C.
T1  - Aerodynamsiche RA-Optimierung
JF  - Zentralblatt fuer Industriebau. 31 (1985), H. 5
Y1  - 1985
SN  - 0044-4227
SP  - 358
EP  - 362
ER  - 
TY  - CHAP
A1  - Ballmann, Josef
A1  - Boucke, Alexander
A1  - Braun, Carsten
T1  - Aeroelastic sensitivity in the transonic regime
T2  - Symposium Transsonicum IV : proceedings of the IUTAM symposium held in Göttingen, Germany, 2 - 6 September 2002 / ed. by Helmut Sobieczky. Fluid mechanics and its applications.  Vol. 73
Y1  - 2003
SN  - 978-94-010-3998-7
SP  - 225
EP  - 236
PB  - Kluwer Academic
CY  - Dordrecht
ER  - 
TY  - JOUR
A1  - Götten, Falk
A1  - Havermann, Marc
A1  - Braun, Carsten
A1  - Marino, Matthew
A1  - Bil, Cees
T1  - Airfoil drag at low-to-medium reynolds numbers: A novel estimation method
JF  - AIAA Journal
N2  - This paper presents a novel method for airfoil drag estimation at Reynolds numbers between 4×10⁵ and 4×10⁶. The novel method is based on a systematic study of 40 airfoils applying over 600 numerical simulations and considering natural transition. The influence of the airfoil thickness-to-chord ratio, camber, and freestream Reynolds number on both friction and pressure drag is analyzed in detail. Natural transition significantly affects drag characteristics and leads to distinct drag minima for different Reynolds numbers and thickness-to-chord ratios. The results of the systematic study are used to develop empirical correlations that can accurately predict an airfoil drag at low-lift conditions. The new approach estimates a transition location based on airfoil thickness-to-chord ratio, camber, and Reynolds number. It uses the transition location in a mixed laminar–turbulent skin-friction calculation, and corrects the skin-friction coefficient for separation effects. Pressure drag is estimated separately based on correlations of thickness-to-chord ratio, camber, and Reynolds number. The novel method shows excellent accuracy when compared with wind-tunnel measurements of multiple airfoils. It is easily integrable into existing aircraft design environments and is highly beneficial in the conceptual design stage.
Y1  - 2020
U6  - https://doi.org/10.2514/1.J058983
SN  - 1533-385X
VL  - 58
IS  - 7
SP  - 2791
EP  - 2805
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Maurischat, Andreas
T1  - Algebraic independence of the Carlitz period and its hyperderivatives
JF  - Journal of Number Theory
KW  - Drinfeld modules
KW  - Periods
KW  - t-modules
KW  - Transcendence
KW  - Higher derivations
Y1  - 2022
U6  - https://doi.org/10.1016/j.jnt.2022.01.006
SN  - 0022-314X
VL  - 240
SP  - 145
EP  - 162
PB  - Elsevier
CY  - Orlando, Fla.
ER  - 
TY  - JOUR
A1  - Maurischat, Andreas
T1  - Algebraic independence of the Carlitz period and its hyperderivatives
KW  - Drinfeld modules
KW  - t-modules
KW  - Transcendence
KW  - Hyperdifferentials
Y1  - 2021
N1  - Zweitveröffentlichung.
Verlagsveröffentlichung: https://doi.org/10.1016/j.jnt.2022.01.006
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Wolff, Nino
A1  - Seefeldt, Patric
A1  - Bauer, Wolfgang
A1  - Fiebig, Christopher
A1  - Gerding, Patrick
A1  - Parow-Souchon, Kai
A1  - Pongs, Anna
A1  - Reiffenrath, Matti
A1  - Ziemann, Thomas
T1  - Alternative application of solar sail technology
T2  - Advances in solar sailing
N2  - The development of Gossamer sail structures for solar sails contributes to a large field of future space applications like thin film solar generators, membrane antennas and drag sails. The focus of this paper is the development of a drag sail based on solar sail technology that could contribute to a reduction of space debris in low Earth orbits. The drag sail design and its connections to solar sail development, a first test on a sounding rocket, as well as the ongoing integration of the drag sail into a triple CubeSat is presented.
Y1  - 2014
SN  - 978-3-642-34906-5 (Print) ; 978-3-642-34907-2 (E-Book)
U6  - https://doi.org/10.1007/978-3-642-34907-2_23
SP  - 351
EP  - 365
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Weihe, Stefan
A1  - Ernst, Ansgar
A1  - Röth, Thilo
A1  - Proksch, Johannes
T1  - Aluminium-Stahl-Verbundguss im Nutzfahrzeugbau
JF  - ATZ - Automobiltechnische Zeitschrift
N2  - In modernen Fahrzeugkarosserien der Großserie kommen zunehmend Materialmischbauweisen zur Anwendung. In Zusammenarbeit der Daimler AG, der Tower Automotive Holding GmbH, der Imperia GmbH sowie der Partnerunternehmen KSM Castings GmbH und Schaufler Tooling GmbH & Co. KG wird das Leichtbaupotenzial von Aluminiumverbundguss-Stahlblech-Hybriden am Beispiel des vorderen Dachquerträgers des Mercedes-Benz Viano/Vito ausführlich untersucht.
Y1  - 2013
SN  - 2192-8800 (Online)
SN  - 0001-2785 (Print)
VL  - 115
IS  - 4
SP  - 312
EP  - 316
PB  - Springer Fachmedien Wiesbaden
ER  - 
TY  - JOUR
A1  - Schael, S.
A1  - Atanasyan, A.
A1  - Berdugo, J.
A1  - Bretz, T.
A1  - Czupalla, Markus
A1  - Dachwald, Bernd
A1  - Doetinchem, P. von
A1  - Duranti, M.
A1  - Gast, H.
A1  - Karpinski, W.
A1  - Kirn, T.
A1  - Lübelsmeyer, K.
A1  - Maña, C.
A1  - Marrocchesi, P.S.
A1  - Mertsch, P.
A1  - Moskalenko, I.V.
A1  - Schervan, T.
A1  - Schluse, M.
A1  - Schröder, K.-U.
A1  - Schultz von Dratzig, A.
A1  - Senatore, C.
A1  - Spies, L.
A1  - Wakely, S.P.
A1  - Wlochal, M.
A1  - Uglietti, D.
A1  - Zimmermann, J.
T1  - AMS-100: The next generation magnetic spectrometer in space – An international science platform for physics and astrophysics at Lagrange point 2
JF  - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Y1  - 2019
U6  - https://doi.org/10.1016/j.nima.2019.162561
SN  - 0168-9002
VL  - 944
IS  - 162561
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Finger, Felix
A1  - Khalsa, R.
A1  - Kreyer, Jörg
A1  - Mayntz, Joscha
A1  - Braun, Carsten
A1  - Dahmann, Peter
A1  - Esch, Thomas
A1  - Kemper, Hans
A1  - Schmitz, O.
A1  - Bragard, Michael
T1  - An approach to propulsion system modelling for the conceptual design of hybrid-electric general aviation aircraft
T2  - Deutscher Luft- und Raumfahrtkongress 2019, 30.9.-2.10.2019, Darmstadt
N2  - In this paper, an approach to propulsion system modelling for hybrid-electric general aviation aircraft is presented. Because the focus is on general aviation aircraft, only combinations of electric motors and reciprocating combustion engines are explored. Gas turbine hybrids will not be considered. The level of the component's models is appropriate for the conceptual design stage. They are simple and adaptable, so that a wide range of designs with morphologically different propulsive system architectures can be quickly compared. Modelling strategies for both mass and efficiency of each part of the propulsion system (engine, motor, battery and propeller) will be presented.
Y1  - 2019
ER  -