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Introduction

The EU funded Project REMFI focuses on the aerodynamics of the aircraft’s rear fuselage and empennage flow. The aim is to improve the knowledge on complex flow physics and thereby provide a basis for more efficient future tail designs.

Project

In order to obtain a fully optimized empennage design with highly efficient control surfaces, the following tasks are addressed:

  • Elevator / rudder fuselage gaps effects

  • Transition effects on empennage performance, efficiency and hinge moments

  • Improved live-rear-end measuring techniques

  • New and innovative designs for integrated fuselage and empennage including belly fairing

  • Improved knowledge on scale effects up to true flight Reynolds numbers

  • Drag increasing devices for steep descend to reduce noise impact

  • Advanced CFD tools for industrial application with specific guidelines for empennage flow simulation

 

ISM Contribution to REMFI

The Institute of Fluid Mechanics contributed a wide study on the high-lift and stall behavior of the airfoil employed for the horizontal stabilizer of the REMFI aircraft. Simulations were carried out for take of / landing conditions as well as for cruise flight. For both, special respect was paid to model the natural laminar/turbulent transition. ISM’s in-house transition prediction module coupled to the RANS-solver TAU was used. Transition scenarios covered Tollmien-Schlichting and cross flow instabilities. It was shown that transition plays a key role for accurate drag and maximum lift predictions.

Contact: Dipl.-Ing. M. Kruse (m.kruse@tu-braunschweig.de)


  aktualisiert am 17.05.2008
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