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  - RPRT
A1  - Bohn, Dieter
A1  - Funke, Harald
A1  - Gier, J.
T1  - Untersuchung des Strömungsausgleichs in den Schaufelreihen ungleichförmig ungeströmter Turbomaschinen
N2  - Zwischenbericht über das Vorhaben FVV - Nr. 665 (AIF-Nr. 10780) Heft R 498(1998) S. 123-136. Informationstagung Turbinen, Frühjahr 1998, Frankfurt
KW  - Strömungsmaschine
KW  - Turbine
KW  - Strömungsausgleich
KW  - Turbine
Y1  - 1998
ER  - 
TY  - JOUR
A1  - Schmitz, Günter
A1  - Roetert, J.
A1  - Pischinger, M.
T1  - A Fast Intelligent VMEbus System for Combustion Analysis in Engines
JF  - 19th [nineteenth] International Symposium on Automotive Technology & [and] Automation : with particular reference to cell control and quality management systems for the manufacturing industries; Monte Carlo, 24. - 28. October 1988.
Y1  - 1988
SN  - 0947719229
SP  - 381
EP  - 391
PB  - Automotive Automation Ltd
CY  - Croydon
ER  - 
TY  - BOOK
A1  - Esch, Thomas
T1  - Experimentelle Untersuchungen an Verbrennungsmotoren. - 7. Aufl.
Y1  - 2005
PB  - Fachhochschule Aachen, Lehr- und Forschungsgebiet Thermodynamik und Verbrennungstechnik
CY  - Aachen
ER  - 
TY  - BOOK
A1  - Esch, Thomas
T1  - Technische Thermodynamik
Y1  - 2005
PB  - Fachhochschule Aachen, Lehr- und Forschungsgebiet Thermodynamik und Verbrennungstechnik
CY  - Aachen
ER  - 
TY  - BOOK
A1  - Gerhardt, Hans Joachim
A1  - Kramer, Carl
T1  - Windlasten auf nach innen geneigten Dachflächen
Y1  - 1983
N1  - Forschungsbericht / Informationszentrum Raum und Bau der Fraunhofer-Gesellschaft
PB  - IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - BOOK
A1  - Gerhardt, Hans Joachim
T1  - Abschlußbericht zum Forschungsvorhaben 'Untersuchungen zur Windbelastung von kleinformatigen harten Dachwerkstoffen' / Forscher: C. Kramer ; H. J. Gerhardt. Bearb.: H.-W. Kuster
Y1  - 1983
N1  - Forschungsbericht / Informationszentrum Raum und Bau der Fraunhofer-Gesellschaft
PB  - IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - BOOK
A1  - Gerhardt, Hans Joachim
T1  - Untersuchungen zur aerodynamischen Detailoptimierung von Personenkraftwagen mit Hilfe von Modellversuchen im Windkanal / Carl Kramer ; Hans-Joachim Gerhardt; Siegfried Scherer
Y1  - 1977
SN  - 3-531-02633-X
N1  - Forschungsberichte des Landes Nordrhein-Westfalen ; 2633: Fachgruppe Maschinenbau, Verfahrenstechnik
PB  - Westdt. Verl.
CY  - Opladen
ER  - 
TY  - BOOK
A1  - Gerhardt, Hans Joachim
T1  - Lagersicherheit lose verlegter Wärmedämmplatten auf Flachdächern gegen Abheben durch Windeinwirkung : Abschlußbericht zum Forschungsvorhaben "Lose verlegte Wärmedämmplatten" / H. J. Gerhardt ; K. K. Bofah ; C. Kramer
Y1  - 1989
N1  - Bauforschungsberichte des Bundesministers für Raumordnung, Bauwesen und Städtebau : Bau- und Wohnforschung
PB  - IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Bullerschen, Klaus-Gerd
A1  - Wilhelmi, Herbert
T1  - Cooling of arc furnace electrodes with heat pipes
JF  - Chemical Engineering & Technology. 14 (1991), H. 1
Y1  - 1991
SN  - 0930-7516
SP  - 45
EP  - 53
ER  -