TY  - JOUR
A1  - Wittmann, Klaus
A1  - Kehr, J.
A1  - Willnecker, R.
T1  - Decentralized Payload Operations Concept for Columbus
Y1  - 2000
N1  - 51st IAF Congress, Rio de Janeiro, Brazil, Oct. 2000
ER  - 
TY  - JOUR
A1  - Wittmann, Klaus
T1  - Overview of Space Operations at DLR
Y1  - 2000
N1  - SpaceOps2000 Conference, Toulouse, Frankreich,19-23 June 2000
ER  - 
TY  - JOUR
A1  - Wahle, Michael
T1  - Auf sicheren Füßen stehen : Entwicklung eines Maschinenlagers mit einem Federkern aus zelligem Polyurethan
JF  - Der Konstrukteur
Y1  - 2000
SN  - 0344-4570
VL  - 31
IS  - 6
SP  - 30
EP  - 32
ER  - 
TY  - BOOK
A1  - Schmitz, Günter
T1  - Mechatronik im Automobil I: aktuelle Trends in der Systementwicklung für Automobile / Günter Schmitz (Hrsg.)
Y1  - 2000
SN  - 3-8169-1839-5
PB  - Expert-Verl.
CY  - Renningen
ER  - 
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  - 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  - 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  - 
TY  - BOOK
A1  - Ley, Wilfried
T1  - Meteoriten und Space Debris : Gemeinschaftsveranstaltung der FH Aachen, der DGLR und der DLR / 13. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 23. November 2000. / Ley, Wilfried [Hrsg.]
Y1  - 2000
SN  - 3-932182-14-6
PB  - DGLR
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Lasai, Sven
A1  - Kolm, Heiko
A1  - Wahle, Michael
A1  - Pohl, Reiner
T1  - Schwingungsanalyse von Subsystemen mit Hilfe der Simulation
JF  - Automobiltechnische Zeitschrift - ATZ
Y1  - 2000
SN  - 0001-2785
VL  - 102
IS  - 4
SP  - 266
EP  - 270
ER  - 
TY  - BOOK
A1  - Havermann, Marc
T1  - Strahlmischung und Druckrückgewinn in Überschall-Innenströmungen
Y1  - 2000
SN  - 3-86073-761-9
N1  - Aachener Beiträge zum Maschinenbau ; 2 ; Zugl. Aachen, Techn. Hochsch., Diss., 1999
PB  - Mainz
CY  - Aachen
ER  -