EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON INTEGRATED INTAKES FOR AGILE AND HIGHLY SWEPT AIRCRAFT CONFIGURATIONS

An experimental study on the effect of boundary layer ingestion into highly integrated intakes is reviewed. First, a generic intake model that has been specially designed for the tests is introduced. Thereafter, the experimental approach that allows for independently varying Mach and Reynolds number as well as boundary layer thickness and mass flux through the intake, is described. The experiments were performed in the Cryogenic Ludwieg-Tube Gottingen of the German Dutch Wind Tunnels (DNW-KRG). Intake performance is discussed in terms of circumferential distortions and total pressure-recovery at the engine face. In a subsequent numerical study efficiencies of vortex generators are evaluated as a means for improving conditions at the engine face.

[1]  Stefan Koch,et al.  Experimental Study of Boundary-Layer Ingestion into a Diverterless S-Duct Intake , 2015 .

[2]  Dieter Schwamborn,et al.  Development of the TAU-Code for aerospace applications , 2008 .

[3]  D. Krige.  A statistical approach to some basic mine valuation problems on the Witwatersrand, by D.G. Krige, published in the Journal, December 1951 : introduction by the author , 1951 .

[4]  Norman F Smith,et al.  The development and application of high-critical-speed nose inlets , 1945 .

[5]  Albert Betz.  Einführung in die Theorie der Strömungsmaschinen , 1959 .

[6]  Brian G. Allan,et al.  Boundary-Layer-Ingesting Inlet Flow Control , 2013 .

[7]  John Evans,et al.  Efficient Computation of 3D-Flows for Complex Configurations with the DLR-TAU Code , 1999 .

[8]  Magnus H. Tormalm,et al.  Flow Control using Vortex Generators or Micro-Jets Applied in an UCAV Intake , 2014 .

[9]  Martin Rein,et al.  Numerical and Experimental Investigations on Highly Integrated Subsonic Air Intakes , 2014 .

[10]  Anthony Donald Gardner,et al.  Design of a generic subsonic S-duct intake for studies on the effect of boundary layer ingestion , 2009 .

[11]  Olivier Atinault,et al.  Exergy-based Aircraft Aeropropulsive Performance Assessment: CFD Application to Boundary Layer Ingestion , 2014 .

[12]  Tom Hynes,et al.  Performance of a Boundary Layer Ingesting (BLI) propulsion system , 2007 .

[13]  Markus Rütten,et al.  Experimental Investigations on the Influence of Ingesting Boundary Layers into a Diverterless S‐Duct Intake , 2014 .

[14]  Markus Rütten,et al.  Investigation of the Flow within Partially Submerged Scoop Type Air Intakes , 2013 .

[15]  Martin Rein,et al.  Numerical and Experimental Investigations on Subsonic Air Intakes with Serpentine Ducts for UAV Configurations , 2015 .

[16]  M. Drela.  Power Balance in Aerodynamic Flows , 2009 .

[17]  S. Koch.  Zeitliche und räumliche Turbulenzentwicklung in einem Rohrwindkanal und deren Einfluss auf die Transition an Profilmodellen , 2004 .

[18]  Anthony Donald Gardner,et al.  Generic Lambda Wing Configuration in Compressible Flow: Effect of Highly Integrated Intakes , 2015 .