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This volume contains the description of an EC-sponsered program to
study all relevant aspects of shock/ boundary-layer interaction
control, the latter designed to improve aircraft performance at
design (cruise) and off-design conditions. The work being presented
includes a discussion of basic control experiments and the
corresponding physical modeling, to account for shock control and a
discussion of the airfoil experiments conducted for code validation
and control assessment, in conjunction with the basic experiments
and computations. The contents is comprised of a section giving a
broad overview of the research carried out here and more detailed
individual contributions by the participants in the research.
Der Band enthalt den Abschlussbericht eines von EU geforderten
Projekts EUROSHOCK, das alle relevanten Aspekte der Kontrolle von
Stossfronten und Grenzschichten (wichtig z.B. fur die Verbesserung
der Flugeigenschaften von Fluzeugen) untersuchte. Neben einer
ausfuhrlichen Diskussion der grundlegenden Kontrollexperimente und
der zugrundeliegenden Modellierung werden auch die Versuche an
Tragflachen beschrieben, die zur Validierung von Modellrechnungen
durchgefuhrt werden. Daruber hinaus enthalt der Band auch die
detaillierten Ergebnisse der Teilnehmer an dem Forschungsprogramm."
The survival of the Aeronautical Industries of Europe in the highly
competitive World Aviation Market is strongly dependent on such
factors as time-to-market of a new or derivative aircraft and on
its manufacturing costs but also on the achievement of a
competitive technological advantage by which an increased market
share can be gained. Recognizing this, cooperative research is
continuously encouraged and co-financed by the European Union in
order to strengthen the scientific and technological base of the
Aeronautical Industries thus providing - among others - the
technological edge needed for survival. Corresponding targets of
research within Area 3, Technologies for Transport Means, and here
in particular Area 3A, Aeronautics Technologies, of the Industrial
and Materials Technologies Program ( Brite -EuRam III, 1994 -1998)
have been identified to be aircraft efficiency, cost effectiveness
and environmental impact. Concerning aircraft efficiency - relevant
to the present research - a reduction in aircraft drag of 10%, a
reduction in aircraft fuel consumption of 30%, and a reduction in
airframe, engine and system weight of 20% are envisaged. Meeting
these objectives has, of course, also a strong positive impact on
the environment.
This volume contains a thorough description of the EU-supported project EUROSHOCK II concerned with the investigation of active shock and boundary layer control to improve aircraft performance. Discussed are basic experiments, supplemented by Navier-Stokes computations, to improve and validate physical models relevant to control and the extension, validation and application of various computational methods to airfoil and wing flows with control. Furthermore described are experiments on airfoils and wings carried out to assess the aerodynamic benefits of control and to provide data for validation purposes. Finally, control applications to real aircraft and the corresponding installation penalties and mission benefits are addressed. This volume is a sequel to Vol. 56 on passive shock control.
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