Aerodynamic blade design with multi-objective optimization for a tiltrotor aircraft
| Autor: | Giuseppe Gibertini, Giovanni Droandi |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Airfoil
Engineering ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION Blade (geometry) Aerodynamic Blade design Multi-objective optimization Tiltrotor business.industry Rotor (electric) Constrained optimization General Medicine Structural engineering Aerodynamics Solver law.invention law Genetic algorithm business |
| Zdroj: | Aircraft Engineering and Aerospace Technology. 87:19-29 |
| ISSN: | 0002-2667 |
| DOI: | 10.1108/aeat-01-2013-0005 |
| Popis: | Purpose – The purpose of this paper is to present the aerodynamic blade design of a tiltwing aircraft with a multi-objective optimization procedure. The aerodynamic design of tiltrotor blades is a very challenging task in the project of this type of aircraft. Design/methodology/approach – Tiltrotor blades have to give good performance both in helicopter and aeroplane modes. According to the design parameters (the chords, the twists and the airfoils along the blade), as the optimization objectives are different from one operating condition to another, the blade is the result of a multi-objective constrained optimization based on a controlled elitist genetic algorithm founded on the NSGA-II algorithm. The optimization process uses a BEMT solver to compute rotor performance. To avoid negative effects due to compressibility losses in aeroplane mode, the blade shape has been refined following the normal Mach number criterion. Findings – It has been found that the optimized rotor blade gives good performance bo... |
| Databáze: | OpenAIRE |
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