@article{GoettenHavermannBraunetal.2021,
  author    = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Marino, Matthew and Bil, Cees},
  title     = {Aerodynamic Investigations of UAV Sensor Turrets - A Combined Wind-tunnel and CFD Approach},
  series = {SciTech 2021, AIAA SciTech Forum, online, WW, Jan 11-15, 2021},
  journal   = {SciTech 2021, AIAA SciTech Forum, online, WW, Jan 11-15, 2021},
  publisher = {AIAA},
  address   = {Reston, Va.},
  doi       = {10.2514/6.2021-1535},
  pages     = {1 -- 12},
  year      = {2021},
  language  = {en}
}
@article{GoettenHavermannBraunetal.2020,
  author    = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Marino, Matthew and Bil, Cees},
  title     = {Airfoil drag at low-to-medium reynolds numbers: A novel estimation method},
  series = {AIAA Journal},
  volume    = {58},
  journal   = {AIAA Journal},
  number    = {7},
  publisher = {AIAA},
  address   = {Reston, Va.},
  issn      = {1533-385X},
  doi       = {10.2514/1.J058983},
  pages     = {2791 -- 2805},
  year      = {2020},
  abstract  = {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.},
  language  = {en}
}
@article{HavermannSeiler2006,
  author    = {Havermann, Marc and Seiler, F.},
  title     = {Boundary Layer Influence on Supersonic Jet/Cross-Flow Interaction in Hypersonic Flow / Havermann, M. ; Seiler, F.},
  series = {Notes on Numerical Fluid Mechanics and Multidisciplinary Design. 92 (2006)},
  journal   = {Notes on Numerical Fluid Mechanics and Multidisciplinary Design. 92 (2006)},
  publisher = {-},
  isbn      = {1612-2909},
  pages     = {281 -- 288},
  year      = {2006},
  language  = {en}
}
@article{HavermannBeylich1998,
  author    = {Havermann, Marc and Beylich, A. E.},
  title     = {Combined Measurement of Velocity, Temperature and Pressure in Compressible Gas Flows Using Laser-Induced Iodine Fluorescence / Havermann, M. ; Beylich, A. E.},
  publisher = {-},
  year      = {1998},
  language  = {en}
}
@article{PichlerGeorgeSeileretal.2009,
  author    = {Pichler, A. and George, A. and Seiler, F. and Srulijes, J. and Havermann, Marc},
  title     = {Doppler Picture Velocimetry (DPV) applied to hypersonics},
  series = {Shock Waves [Elektronische Ressource] : 26th International Symposium on Shock Waves, Volume 1 / edited by Klaus Hannemann, Friedrich Seiler},
  journal   = {Shock Waves [Elektronische Ressource] : 26th International Symposium on Shock Waves, Volume 1 / edited by Klaus Hannemann, Friedrich Seiler},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-540-85168-4},
  pages     = {503 -- 508},
  year      = {2009},
  language  = {en}
}
@article{Havermann2005,
  author    = {Havermann, Marc},
  title     = {Effects of the shock tube open-end shape on vortex loops released from it / Kainuma, M. ; Havermann, M. ; Sun, M. ; Takayama, K.},
  series = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang},
  journal   = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-540-22497-6},
  pages     = {505 -- 510},
  year      = {2005},
  language  = {en}
}
@article{HavermannSeilerGeorgeetal.2002,
  author    = {Havermann, Marc and Seiler, F. and George, A. and Leopold, F.},
  title     = {Enhanced Doppler Picture Velocimetry (DPV) for Planar Velocity Measurements in High-Speed Shock Tunnel Flow / Seiler, F. ; George, A. ; Leopold, F. ; Havermann, M. ; Srulijes, J.},
  series = {10th International Symposium on Flow Visualization : Kyōto, Japan, August 26 - 29, 2002 / sponsored by International Flow Visualization Society . [Chairman:] Toshio Kobayashi},
  journal   = {10th International Symposium on Flow Visualization : Kyōto, Japan, August 26 - 29, 2002 / sponsored by International Flow Visualization Society . [Chairman:] Toshio Kobayashi},
  publisher = {Visualization Society of Japan},
  address   = {Kyoto},
  isbn      = {4906497829},
  year      = {2002},
  language  = {en}
}
@article{HavermannSalveTinetal.1994,
  author    = {Havermann, Marc and Salve, M. de and Tin, G. del and Panella, B.},
  title     = {Experimental Study of the Temperature Field along a Density Lock / Salve, M. de ; Tin, G. del ; Panella, B. ; Sansoldo, D. ; Havermann, M.},
  series = {Proceedings : International Conference on New Trends in Nuclear System Thermohydraulics, May 30th - June 2nd, 1994, Pisa / organized by Dipartimento di Costruzioni Meccaniche e Nucleari ... . Ed. by Francesco Oriolo},
  journal   = {Proceedings : International Conference on New Trends in Nuclear System Thermohydraulics, May 30th - June 2nd, 1994, Pisa / organized by Dipartimento di Costruzioni Meccaniche e Nucleari ... . Ed. by Francesco Oriolo},
  publisher = {-},
  address   = {Pisa},
  pages     = {623 -- 630},
  year      = {1994},
  language  = {en}
}
@article{GoettenHavermannBraunetal.2020,
  author    = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Marino, Matthew and Bil, Cees},
  title     = {Improved Form Factor for Drag Estimation of Fuselages with Various Cross Sections},
  series = {Journal of Aircraft},
  journal   = {Journal of Aircraft},
  publisher = {AIAA},
  address   = {Reston, Va.},
  issn      = {1533-3868},
  doi       = {10.2514/1.C036032},
  pages     = {1 -- 13},
  year      = {2020},
  abstract  = {The paper presents an aerodynamic investigation of 70 different streamlined bodies with fineness ratios ranging from 2 to 10. The bodies are chosen to idealize both unmanned and small manned aircraft fuselages and feature cross-sectional shapes that vary from circular to quadratic. The study focuses on friction and pressure drag in dependency of the individual body's fineness ratio and cross section. The drag forces are normalized with the respective body's wetted area to comply with an empirical drag estimation procedure. Although the friction drag coefficient then stays rather constant for all bodies, their pressure drag coefficients decrease with an increase in fineness ratio. Referring the pressure drag coefficient to the bodies' cross-sectional areas shows a distinct pressure drag minimum at a fineness ratio of about three. The pressure drag of bodies with a quadratic cross section is generally higher than for bodies of revolution. The results are used to derive an improved form factor that can be employed in a classic empirical drag estimation method. The improved formulation takes both the fineness ratio and cross-sectional shape into account. It shows superior accuracy in estimating streamlined body drag when compared with experimental data and other form factor formulations of the literature.},
  language  = {en}
}
@article{LettiniHavermannGuidettietal.2010,
  author    = {Lettini, Antonio and Havermann, Marc and Guidetti, Marco and Fornaciari, Andrea},
  title     = {Improved functionalities and energy saving potential on mobile machines combining electronics with flow sharing valve and variable displacement pump},
  series = {IFK 7, 7th International Fluid Power Conference, Efficiency through Fluid Power, 7. Internationales Fluidtechnisches Kolloquium, Workshop Proceedings, Vol. 3, Aachen, DE, 22.-24. Mar, 2010},
  journal   = {IFK 7, 7th International Fluid Power Conference, Efficiency through Fluid Power, 7. Internationales Fluidtechnisches Kolloquium, Workshop Proceedings, Vol. 3, Aachen, DE, 22.-24. Mar, 2010},
  publisher = {-},
  isbn      = {978-3-940565-92-1},
  pages     = {103 -- 114},
  year      = {2010},
  language  = {en}
}
@article{HavermannKainumaTakayama2005,
  author    = {Havermann, Marc and Kainuma, M. and Takayama, K.},
  title     = {Influence of Physical and Geometrical Parameters on Vortex Rings Generated by a Shock Tube / Havermann, M. ; Kainuma, M. ; Takayama, K.},
  series = {Non-lethal options enhancing security and stability : 3rd European Symposium on Non-Lethal Weapons, May 10 - 12, 2005, Ettlingen, Germany / ICT, Fraunhofer-Institut Chemische Technologie; European Working Group Non-Lethal Weapons},
  journal   = {Non-lethal options enhancing security and stability : 3rd European Symposium on Non-Lethal Weapons, May 10 - 12, 2005, Ettlingen, Germany / ICT, Fraunhofer-Institut Chemische Technologie; European Working Group Non-Lethal Weapons},
  publisher = {ICT},
  address   = {Pfinztal},
  pages     = {getr. Z{\"a}hlung [ca. 600 S.]},
  year      = {2005},
  language  = {en}
}
@article{HavermannMoeglin2005,
  author    = {Havermann, Marc and Moeglin, J.-P.},
  title     = {ISL's Research on Systems with Controlled Effects for Non-Lethal Applications / Moeglin, J.-P. ; Havermann, M. et al.},
  series = {Non-lethal options enhancing security and stability : 3rd European Symposium on Non-Lethal Weapons, May 10 - 12, 2005, Ettlingen, Germany / ICT, Fraunhofer-Institut Chemische Technologie; European Working Group Non-Lethal Weapons},
  journal   = {Non-lethal options enhancing security and stability : 3rd European Symposium on Non-Lethal Weapons, May 10 - 12, 2005, Ettlingen, Germany / ICT, Fraunhofer-Institut Chemische Technologie; European Working Group Non-Lethal Weapons},
  publisher = {ICT},
  address   = {Pfinztal},
  pages     = {getr. Z{\"a}hlung [ca. 600 S.]},
  year      = {2005},
  language  = {en}
}
@article{GoettenFingerHavermannetal.2018,
  author    = {G{\"o}tten, Falk and Finger, Felix and Havermann, Marc and Braun, Carsten and Gomez, Francisco and Bill, C.},
  title     = {On the flight performance impact of landing gear drag reduction methods for unmanned air vehicles},
  series = {Deutscher Luft- und Raumfahrtkongress 2018},
  journal   = {Deutscher Luft- und Raumfahrtkongress 2018},
  publisher = {DGLR},
  address   = {Bonn},
  doi       = {10.25967/480058},
  pages     = {11 S.},
  year      = {2018},
  abstract  = {The flight performance impact of three different landing gear configurations on a small, fixed-wing UAV is analyzed with a combination of RANS CFD calculations and an incremental flight performance algorithm. A standard fixed landing gear configuration is taken as a baseline, while the influence of retracting the landing gear or applying streamlined fairings is investigated. A retraction leads to a significant parasite drag reduction, while also fairings promise large savings. The increase in lift-to-drag ratio is reduced at high lift coefficients due to the influence of induced drag. All configurations are tested on three different design missions with an incremental flight performance algorithm. A trade-off study is performed using the retracted or faired landing gear's weight increase as a variable. The analysis reveals only small mission performance gains as the aerodynamic improvements are negated by weight penalties. A new workflow for decision-making is presented that allows to estimate if a change in landing gear configuration is beneficial for a small UAV.},
  language  = {en}
}
@article{HavermannSeilerBolleretal.2005,
  author    = {Havermann, Marc and Seiler, F. and Boller, F. and Mangold, P.},
  title     = {Operation of the ISL transonic shock tube in a high subsonic flow regime / Seiler, F. ; Havermann, M. ; Boller, F. ; Mangold, P. ; Takayama K.},
  series = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang},
  journal   = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-540-22497-6},
  pages     = {307 -- 312},
  year      = {2005},
  language  = {en}
}
@article{HavermannHaertigReyetal.2002,
  author    = {Havermann, Marc and Haertig, J. and Rey, C. and George, A.},
  title     = {Particle image velocimetry in mach 3.5 and 4.5 shock-tunnel flows / Haertig, J. ; Havermann, M. ; Rey, C. ; George, A.},
  series = {AIAA journal. 40 (2002), H. 6},
  journal   = {AIAA journal. 40 (2002), H. 6},
  publisher = {-},
  isbn      = {0001-1452},
  pages     = {1056 -- 1060},
  year      = {2002},
  language  = {en}
}
@article{HavermannBeylich1997,
  author    = {Havermann, Marc and Beylich, A. E.},
  title     = {Performance and Limitations of the Laser-Induced Fluorescence Measurement Technique and the Established Experimental Methods for the Study of Supersonic Mixing / Havermann, M. ; Beylich, A. E.},
  series = {International Journal of heat and technology. 15 (1997), H. 2},
  journal   = {International Journal of heat and technology. 15 (1997), H. 2},
  publisher = {-},
  pages     = {3 -- 10},
  year      = {1997},
  language  = {en}
}
@article{HavermannHaertigReyetal.2001,
  author    = {Havermann, Marc and Haertig, J. and Rey, C. and George, F.},
  title     = {PIV measurements in Mach 3.5 and 4.5 shock tunnel flow / Haertig, J. ; Havermann, M. ; Rey, C. ; George, F.},
  publisher = {-},
  year      = {2001},
  language  = {en}
}
@article{HavermannHaertigReyetal.2008,
  author    = {Havermann, Marc and Haertig, J. and Rey, C. and George, A.},
  title     = {PIV Measurements in Shock Tunnels and Shock Tubes / Havermann, M. ; Haertig, J. ; Rey, C. ; George, A.},
  series = {Particle Image Velocimetry : New Developments and Recent Applications},
  journal   = {Particle Image Velocimetry : New Developments and Recent Applications},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {978-3-540-73528-1},
  pages     = {429 -- 442},
  year      = {2008},
  language  = {en}
}
@article{HavermannSeilerGeorgeetal.2003,
  author    = {Havermann, Marc and Seiler, F. and George, A. and Leopold, F.},
  title     = {Planar Velocity Visualization in High-Speed Wedge Flow using Doppler Picture Velocimetry (DPV) compared with Particle Image Velocimetry (PIV) / Seiler, F. ; Havermann, M. ; George, A. ; Leopold, F. ; Srulijes, J.},
  series = {Journal of Visualization. 6 (2003), H. 3},
  journal   = {Journal of Visualization. 6 (2003), H. 3},
  publisher = {-},
  isbn      = {1343-8875},
  pages     = {253 -- 262},
  year      = {2003},
  language  = {en}
}
@article{HavermannSeilerGeorgesetal.2008,
  author    = {Havermann, Marc and Seiler, F. and Georges, A. and Srulijes, J.},
  title     = {Progress in Doppler picture velocimetry (DPV) / Seiler, F. ; George, A. ; Srulijes, J. ; Havermann, M.},
  series = {Experiments in Fluids. 44 (2008), H. 3},
  journal   = {Experiments in Fluids. 44 (2008), H. 3},
  publisher = {-},
  isbn      = {1432-1114},
  pages     = {389 -- 395},
  year      = {2008},
  language  = {en}
}