EUROSHOCK - Drag Reduction by Passive Shock Control : Results of the Project EUROSHOCK, AER2-CT92-0049 Supported by the European Union, 1993 – 1995

It has been recognized by the European Union (EU) that 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. Cooperative research is therefore continuously encouraged and co-financed by the European Union in order to strengthen the scientific and technological base of the Aeronautical Industries thus facilitating the future design and manufacture of civil air­ craft products and providing the technological edge needed for survival. Targets of research within Area 3, Aeronautics, of the Industrial and Materials Technology Programme (1991 - 1993) have been identified to be aircraft efficiency, cost effectiveness and environmental im­ pact. Concerning aircraft efficiency - relevant to the present research - a reduction in aircraft drag of 10010, a reduction in aircraft fuel consumption of 30010 and a reduction in airframe, en­ gine and system weight of 20% are envisaged. Meeting these objectives has, of course, also a strong positive impact on the environment. In order to further technology, the philosophy is to avoid spreading the available resources too thinly and rather concentrate on the feasibility demonstration of a limited number of tech­ nologies of high economic and industrial impact. Front Matter....Pages i-xvii Front Matter....Pages 1-1 Introduction....Pages 3-6 Basic Experiments and Physical Modeling (Task 1)....Pages 6-26 Extension of Numerical Methods and Preliminary Control Assessment (Task 2)....Pages 26-49 Airfoil Tests with and without Control (Task 3)....Pages 50-75 Assessment of Shock Control - A Summary....Pages 76-77 Overall Conclusion and Future Work....Pages 78-79 References....Pages 79-81 Front Matter....Pages 83-83 Introduction to the Individual Contributions....Pages 85-87 Basic Study of Passive Control Applied to a Two-dimensional Transonic Interaction....Pages 89-111 Passive Control of Shock Wave - Boundary Layer Interaction and Porous Plate Transpiration Flow....Pages 113-133 An Investigation of Passive Control Applied to Swept Shock-Wave / Boundary-Layer Interactions....Pages 135-150 Numerical Investigation of the Passive Shock Control on Transonic Airfoils through an Euler/Boundary-Layer Coupling Technique....Pages 151-170 Introduction of Passive Shock Control in an Interactive Boundary Layer Method....Pages 171-194 Extension, Validation and Application of the DA VII Transonic Airfoil Code with Passive Shock Control....Pages 195-220 Development of Viscous-Inviscid Interaction Codes for Prediction of Shock Boundary-Layer Interaction Control (SBLIC) and Buffet over Airfoils....Pages 221-244 Transonic Airfoil Flow Prediction with Shock Boundary Layer Interaction Control (SBLIC) by a Time-Accurate Navier-Stokes Code....Pages 245-263 Shock Boundary Layer Interaction Control Predictions using a Viscous-Inviscid Interaction Procedure and a Navier-Stokes Solver....Pages 265-290 Computation of Transonic Flows Applying Shock Boundary Layer Interaction Control....Pages 291-318 Design and Manufacture of the Cryogenic Laminar-Type Airfoil Model DA LVA-1A with Passive Shock Control....Pages 319-329 Qualification by Laser Measurements of the Passive Control on the LVA-1A Airfoil in the T2 Wind Tunnel....Pages 331-353 Front Matter....Pages 83-83 Experimental Investigation of the Transonic Airfoils DA LVA-1Ae and VA-2 with Shock Control....Pages 355-378 An Experimental Investigation of Passive Shock/Boundary-Layer Control on an Aerofoil....Pages 379-400 An Experimental Investigation of Passive Shock/Boundary Layer Interaction Control on an Airfoil: Unsteady Measurements....Pages 401-414 This volume contains the description of an EC-sponsored programme 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.