TY  - JOUR
A1  - Götten, Falk
A1  - Havermann, Marc
A1  - Braun, Carsten
A1  - Marino, Matthew
A1  - Bil, Cees
T1  - Improved Form Factor for Drag Estimation of Fuselages with Various Cross Sections
JF  - Journal of Aircraft
N2  - 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.
Y1  - 2020
U6  - http://dx.doi.org/10.2514/1.C036032
SN  - 1533-3868
SP  - 1
EP  - 13
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - CHAP
A1  - Geiben, Benedikt
A1  - Götten, Falk
A1  - Havermann, Marc
T1  - Aerodynamic analysis of a winged sub-orbital spaceplane
T2  - Deutscher Luft- und Raumfahrtkongress - DLRK 2020
Y1  - 2020
ER  - 
TY  - JOUR
A1  - Götten, Falk
A1  - Havermann, Marc
A1  - Braun, Carsten
A1  - Marino, Matthew
A1  - Bil, Cees
T1  - Aerodynamic Investigations of UAV Sensor Turrets - A Combined Wind-tunnel and CFD Approach
JF  - SciTech 2021, AIAA SciTech Forum, online, WW, Jan 11-15, 2021
Y1  - 2021
U6  - http://dx.doi.org/10.2514/6.2021-1535
SP  - 1
EP  - 12
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - BOOK
A1  - Janser, Frank
A1  - Havermann, Marc
A1  - Hoeveler, Bastian
A1  - Hertz, Cyril
A1  - Bergmann, Ole
T1  - Strömungslehre und Aerodynamik : inkompressible Profile und Tragflügelaerodynamik, Band 2
N2  - Das vorliegende Buch dient als Grundlage für die Bachelor- und Master-Ausbildung von Studierenden im Fachgebiet Strömungslehre und Aerodynamik. Im hier behandelten Teilbereich der inkompressiblen Profile und Tragflügelaerodynamik werden schwerpunktmäßig die folgenden Themen besprochen:

- Profilaerodynamik
- Tragflügelaerodynamik
- Flugzeugpolare
- Methoden zur Flugbereichserweiterung
- Schwebeschub und Schwebeleistung
- Propellerblattaerodynamik
- Numerische Methoden zur Tragflügelberechnung
Y1  - 2023
SN  - 978-3-8107-0261-6
PB  - Mainz
CY  - Aachen
ET  - 4. Auflage
ER  -