TY  - CHAP
A1  - Mertens, Josef
T1  - Reduction of aerodynamic drag (RaWid)-Status after the first year of the program
T2  - New results in numerical and experimental fluid mechanics. - (Notes on numerical fluid mechanics ; 60)
N2  - The technology programme “Reduction of aerodynamic drag (RaWid)” for high speed aerodynamics at Daimler-Benz Aerospace Airbus is sponsered by the German ministry for education, research and technology since July 1, 1995. Connected to this industrial programme are the cooperation programmes “MEGAFLOW” under leadership of the DLR and “Transition” by the DFG, and several contributions by DLR and universities.

The programme is oriented towards technologies required for a MEGALINER which gains momentum by the ambitious plans for a new large Airbus A3XX.

In the first year new technological steps were undertaken in theory, design and experiment. Some critical steps were verified by wing designs checked in wind tunnel tests.
KW  - Wind Tunnel
KW  - Aerodynamic Drag
KW  - Flight Test
KW  - Friction Drag
Y1  - 1997
SN  - 3-528-06960-0
U6  - http://dx.doi.org/10.1007/978-3-322-86573-1_2
SP  - 7
EP  - 14
PB  - Vieweg
CY  - Braunschweig [u.a.]
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  -