Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight
The segment control of active twist rotor is investigated to evaluate the effectiveness in rotor power reduction. A numerical model for predicting the isolated rotor power and loads in steady level flights is deployed and validated. A parametric sweep of the amplitude and phase angle for uniform sin...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/3/1041 |
| _version_ | 1797407913487106048 |
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| author | Xiaochi Zhang Zhiqiang Wan De Yan |
| author_facet | Xiaochi Zhang Zhiqiang Wan De Yan |
| author_sort | Xiaochi Zhang |
| collection | DOAJ |
| description | The segment control of active twist rotor is investigated to evaluate the effectiveness in rotor power reduction. A numerical model for predicting the isolated rotor power and loads in steady level flights is deployed and validated. A parametric sweep of the amplitude and phase angle for uniform single-harmonic active twist control is conducted to demonstrate the mechanism of active twist control in rotor power reduction. The optimal control schedules and segment layouts of the segment twist control for power reduction while considering saturation limits are obtained using an optimization framework based on genetic algorithm. Up to 5-seg configuration is considered. The results indicate that the segment twist control reduces the rotor power more than the uniform twist control by applying divergent control schedules to each segment. The load distribution of the rotor disk is harmonized in both circumferential and spanwise directions. The 2-seg and 3-seg control configurations are appropriate, while the configurations with more segments yield limited benefits and they may be penalized with an increase in system complexity. |
| first_indexed | 2024-03-09T03:49:38Z |
| format | Article |
| id | doaj.art-93530f27596a4c278d23592e1ccd81e5 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:49:38Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-93530f27596a4c278d23592e1ccd81e52023-12-03T14:29:07ZengMDPI AGApplied Sciences2076-34172021-01-01113104110.3390/app11031041Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward FlightXiaochi Zhang0Zhiqiang Wan1De Yan2School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaThe segment control of active twist rotor is investigated to evaluate the effectiveness in rotor power reduction. A numerical model for predicting the isolated rotor power and loads in steady level flights is deployed and validated. A parametric sweep of the amplitude and phase angle for uniform single-harmonic active twist control is conducted to demonstrate the mechanism of active twist control in rotor power reduction. The optimal control schedules and segment layouts of the segment twist control for power reduction while considering saturation limits are obtained using an optimization framework based on genetic algorithm. Up to 5-seg configuration is considered. The results indicate that the segment twist control reduces the rotor power more than the uniform twist control by applying divergent control schedules to each segment. The load distribution of the rotor disk is harmonized in both circumferential and spanwise directions. The 2-seg and 3-seg control configurations are appropriate, while the configurations with more segments yield limited benefits and they may be penalized with an increase in system complexity.https://www.mdpi.com/2076-3417/11/3/1041helicopteractive twist rotorsegment controlpower reduction |
| spellingShingle | Xiaochi Zhang Zhiqiang Wan De Yan Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight Applied Sciences helicopter active twist rotor segment control power reduction |
| title | Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight |
| title_full | Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight |
| title_fullStr | Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight |
| title_full_unstemmed | Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight |
| title_short | Optimal Segment Control of Active Twist Rotor for Power Reduction in Forward Flight |
| title_sort | optimal segment control of active twist rotor for power reduction in forward flight |
| topic | helicopter active twist rotor segment control power reduction |
| url | https://www.mdpi.com/2076-3417/11/3/1041 |
| work_keys_str_mv | AT xiaochizhang optimalsegmentcontrolofactivetwistrotorforpowerreductioninforwardflight AT zhiqiangwan optimalsegmentcontrolofactivetwistrotorforpowerreductioninforwardflight AT deyan optimalsegmentcontrolofactivetwistrotorforpowerreductioninforwardflight |