کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
757197 1462505 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pitch link loads reduction of variable speed rotors by variable tuning frequency fluidlastic isolators
ترجمه فارسی عنوان
کاهش بار پیوندها کاهش روتورهای سرعت متغیر با استفاده از ایزولاتورهای مایع تنظیم کننده متغیر
کلمات کلیدی
جداسازی فلوئید بارها پیوند پیوند، کاهش، روتور، فرکانس متغیر، سرعت متغیر
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی

To reduce the pitch link loads of variable speed rotors, variable tuning frequency fluidlastic isolators are proposed. This isolator utilizes the variation of centrifugal force due to the change of rotor speed to change the tuning port area ratio, which can change the tuning frequency of the isolator. A rotor model including the model of fluidlastic isolator is coupled with a fuselage model to predict the steady responses of the rotor system in forward flight. The aeroelastic analyses indicate that distinct performance improvement in pitch link load control can be achieved by the utilization of variable frequency isolators compared with the constant tuning frequency isolators. The 4/rev (per revolution) pitch link load is observed to be reduced by 87.6% compared with the increase of 56.3% by the constant frequency isolator, when the rotor speed is reduced by 16.7%. The isolation ability at different rotor speeds in different flight states is investigated. To achieve overall load reduction within the whole range of rotor speed, the strategy of the variation of tuning frequency is adjusted. The results indicate that the 4/rev pitch link load within the whole rotor speed range is decreased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Aeronautics - Volume 28, Issue 5, October 2015, Pages 1408–1415
نویسندگان
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