Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter
The aerodynamic design of rotor blades is challenging, and is crucial for the development of helicopter technology. Previous aerodynamic optimizations that focused only on limited design points find it difficult to balance flight performance across the entire flight envelope. This study develops a g...
| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
MDPI AG
2017-06-01
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| Colecção: | Applied Sciences |
| Assuntos: | |
| Acesso em linha: | http://www.mdpi.com/2076-3417/7/6/639 |
| _version_ | 1828167036712255488 |
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| author | Jiayi Xie Zhifeng Xie Ming Zhou Jun Qiu |
| author_facet | Jiayi Xie Zhifeng Xie Ming Zhou Jun Qiu |
| author_sort | Jiayi Xie |
| collection | DOAJ |
| description | The aerodynamic design of rotor blades is challenging, and is crucial for the development of helicopter technology. Previous aerodynamic optimizations that focused only on limited design points find it difficult to balance flight performance across the entire flight envelope. This study develops a global optimum envelope (GOE) method for determining blade parameters—blade twist, taper ratio, tip sweep—for optimum rotor speed helicopters (ORS-helicopters), balancing performance improvements in hover and various freestream velocities. The GOE method implements aerodynamic blade design by a bi-level optimization, composed of a global optimization step and a secondary optimization step. Power loss as a measure of rotor performance is chosen as the objective function, referred to as direct power loss (DPL) in this study. A rotorcraft comprehensive code for trim simulation with a prescribed wake method is developed. With the application of the GOE method, a DPL reduction of as high as 16.7% can be achieved in hover, and 24% at high freestream velocity. |
| first_indexed | 2024-04-12T02:11:18Z |
| format | Article |
| id | doaj.art-79f219f1df9943e4828ac73cc3465d46 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-12T02:11:18Z |
| publishDate | 2017-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-79f219f1df9943e4828ac73cc3465d462022-12-22T03:52:22ZengMDPI AGApplied Sciences2076-34172017-06-017663910.3390/app7060639app7060639Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed HelicopterJiayi Xie0Zhifeng Xie1Ming Zhou2Jun Qiu3Institute for Aero-Engine, School of Aerospace Engineering, Tsinghua University, Tsinghua Yuan No. 1, Beijing 100084, ChinaInstitute for Aero-Engine, School of Aerospace Engineering, Tsinghua University, Tsinghua Yuan No. 1, Beijing 100084, ChinaInstitute for Aero-Engine, School of Aerospace Engineering, Tsinghua University, Tsinghua Yuan No. 1, Beijing 100084, ChinaInstitute for Aero-Engine, School of Aerospace Engineering, Tsinghua University, Tsinghua Yuan No. 1, Beijing 100084, ChinaThe aerodynamic design of rotor blades is challenging, and is crucial for the development of helicopter technology. Previous aerodynamic optimizations that focused only on limited design points find it difficult to balance flight performance across the entire flight envelope. This study develops a global optimum envelope (GOE) method for determining blade parameters—blade twist, taper ratio, tip sweep—for optimum rotor speed helicopters (ORS-helicopters), balancing performance improvements in hover and various freestream velocities. The GOE method implements aerodynamic blade design by a bi-level optimization, composed of a global optimization step and a secondary optimization step. Power loss as a measure of rotor performance is chosen as the objective function, referred to as direct power loss (DPL) in this study. A rotorcraft comprehensive code for trim simulation with a prescribed wake method is developed. With the application of the GOE method, a DPL reduction of as high as 16.7% can be achieved in hover, and 24% at high freestream velocity.http://www.mdpi.com/2076-3417/7/6/639ORS-helicopterblade aerodynamic designglobal optimum envelope (GOE)prescribed wake method |
| spellingShingle | Jiayi Xie Zhifeng Xie Ming Zhou Jun Qiu Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter Applied Sciences ORS-helicopter blade aerodynamic design global optimum envelope (GOE) prescribed wake method |
| title | Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter |
| title_full | Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter |
| title_fullStr | Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter |
| title_full_unstemmed | Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter |
| title_short | Multidisciplinary Aerodynamic Design of a Rotor Blade for an Optimum Rotor Speed Helicopter |
| title_sort | multidisciplinary aerodynamic design of a rotor blade for an optimum rotor speed helicopter |
| topic | ORS-helicopter blade aerodynamic design global optimum envelope (GOE) prescribed wake method |
| url | http://www.mdpi.com/2076-3417/7/6/639 |
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