TY  - BOOK
A1  - Mertens, Josef
A1  - Velden, Alexander van der
A1  - Kelm, Roland
A1  - Kokan, David
T1  - Application of MDO to large subsonic transport aircraft
Y1  - 2000
N1  - Aerospace Sciences Meeting and Exhibit <38, 2000, Reno, NV> ; (AIAA Paper ; 00-0844)
PB  - American Institute of Aeronautics and Astronautics
CY  - Reston, Va.
ER  - 
TY  - PAT
A1  - Mertens, Josef
A1  - Velden, Alexander van der
A1  - Kelm, Roland
T1  - Flugzeug mit Flügeln, deren maximaler Auftrieb durch steuerbare Flügelkomponenten veränderbar ist : Offenlegungsschrift DE102004045732 ; Offenlegungstag: 30.03.2006 = Aircraft with wings whose maximum lift can be altered by controllable wing components
Y1  - 2006
N1  - Zugleich EP1791755A1. - Volltext über Datenbank: http://publikationen.dpma.de/
PB  - Deutsches Patent- und Markenamt
CY  - München
ER  - 
TY  - JOUR
A1  - Mertens, Josef
A1  - Röger, Wolf
T1  - F-Schlepp: Problem Taumelschwingung
JF  - Aerokurier. 44 (2000), H. 10
Y1  - 2000
SN  - 0341-1281
N1  - in der Bereichsbibliothek unter der Signatur 23 Z 391-2000
SP  - 73
EP  - 73
ER  - 
TY  - PAT
A1  - Mertens, Josef
A1  - Lajain, Henri
T1  - Method of fabricating leading edge nose structures of aerodynamic surfaces : patent no.: US 6,415,510 B2 ; date of patent: Jul. 9, 2002
Y1  - 2002
N1  - Volltext auch in der Datenbank http://publikationen.dpma.de/ zu finden unter der Nummer US000006415510B2
PB  - United States Patent and Trademark Office
CY  - [Washington, DC]
ER  - 
TY  - JOUR
A1  - Mertens, Josef
A1  - Klevenhusen, K. D.
A1  - Jakob, H.
T1  - Accurate Transonic Wave Drag Prediction Using Simple Physical Models
JF  - AIAA-Journal. 25 (1987), H. 6
Y1  - 1987
SN  - 0001-1452
SP  - 799
EP  - 805
ER  - 
TY  - JOUR
A1  - Mertens, Josef
A1  - Kelm, R.
A1  - Velden, A. van der
T1  - Interdisziplinäre Auslegung eines Verkehrsflugzeugflügels
JF  - DGLR-Jahrbuch 1999 Bd. 3
Y1  - 1999
N1  - DGLR-JT99-156
SP  - 1605
EP  - 1610
ER  - 
TY  - JOUR
A1  - Mertens, Josef
A1  - Hünecke, Klaus
T1  - Experimentelle Untersuchung zur Landeeigenschaft von Hyperschall-Fluggeräten / Hünecke, Klaus ; Mertens, Josef
JF  - DGLR-Jahrbuch 1988 Bd. 1
Y1  - 1988
N1  - DGLR-88-123
SP  - 706
ER  - 
TY  - JOUR
A1  - Mertens, Josef
A1  - Henke, Rolf
T1  - Adaptive technologies for future civil air transport
JF  - Air & Space Europe. 3 (2001), H. 3-4
Y1  - 2001
SN  - 1247-5793
SP  - 80
EP  - 82
ER  - 
TY  - CHAP
A1  - Mertens, Josef
A1  - Becker, K.
ED  - Ballmann, Josef
T1  - Numerical solution of flow equations : an aircraft designer's view
T2  - Nonlinear hyperbolic equations - theory, computation methods, and applications : proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen, FRG, March 14 to 18, 1988. - (Notes on Numerical Fluid Mechanics ; 24)
N2  - Today the most accurate and cost effective industrial codes used in aircraft design are based on the full potential equation coupled with boundary layer equations. However, these are not capable to solve complicated three-dimensional problems of vortical flows and shocks. On the other hand Euler and Navier-Stokes codes are too expensive and not accurate enough for design purposes, especially in regard of drag and interference prediction. The reasons for these deficiencies are investigated and a way to overcome them by future developments is demonstrated.
Y1  - 1989
SN  - 3-528-08098-1
U6  - http://dx.doi.org/10.1007/978-3-322-87869-4_41
N1  - International Conference on Nonlinear Hyperbolic Problems <3, 1988, Aachen>
SP  - 403
EP  - 412
PB  - Vieweg
CY  - Braunschweig
ER  - 
TY  - CHAP
A1  - Mertens, Josef
T1  - Laminar leading edges: manufacturing, contamination, and operational aspects - results from the German RaWid programme
N2  - RaWid was the German national technology programme on transonic aerodynamics and supporting technologies, lasting from 1995 to 1998. One of the main topics was laminar wing development. Besides aerodynamic design work, many operational aspects were investigated. A manufacturing concept was developed to be applied to operational laminar wings and empennages. It was built in a large scale manufacturing demonstrator with the aerodynamic shape of a 1,5 m section of the A320 fin nose. Tolerances in shape and roughness fulfilled all requirements. The construction can easily be adapted to varying stiffness and strength requirements. Weight and manufacturing costs are comparable to common nose designs. The mock-up to be designed in ALTTA is based on this manufacturing principle. Another critical point is contamination of suction surfaces. Several tests were performed to investigate perforated titanium suction surfaces at realistic operational conditions: - a one year flight test with a suction plate in the stagnation area of the Airbus "Beluga" - a one year test of several suction plates in a ground test near the airport - a one year test of a working suction ground test installation at all weather conditions. No critical results were found. There is no long term suction degradation visible. Icing conditions and ground de-icing fluids used on airports did not pose severe problems. Some problems detected require only respection of weak design constraints.
KW  - Laminare Strömung
KW  - Ansaugsystem
KW  - Profilumströmung
KW  - Laminarprofil
KW  - RaWid
KW  - hybrid laminar flow
KW  - suction systems
KW  - suction structure
KW  - contamination
KW  - operational aspects
Y1  - 2000
ER  -