کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7153987 1462495 2017 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aerodynamic optimization and mechanism design of flexible variable camber trailing-edge flap
ترجمه فارسی عنوان
بهینه سازی آئرودینامیک و طراحی مکانیزم انعطاف پذیری فلپ جلو و عقب
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
Trailing-edge flap is traditionally used to improve the takeoff and landing aerodynamic performance of aircraft. In order to improve flight efficiency during takeoff, cruise and landing states, the flexible variable camber trailing-edge flap is introduced, capable of changing its shape smoothly from 50% flap chord to the rear of the flap. Using a numerical simulation method for the case of the GA (W)-2 airfoil, the multi-objective optimization of the overlap, gap, deflection angle, and bending angle of the flap under takeoff and landing configurations is studied. The optimization results show that under takeoff configuration, the variable camber trailing-edge flap can increase lift coefficient by about 8% and lift-to-drag ratio by about 7% compared with the traditional flap at a takeoff angle of 8°. Under landing configuration, the flap can improve the lift coefficient at a stall angle of attack about 1.3%. Under cruise state, the flap helps to improve the lift-to-drag ratio over a wide range of lift coefficients, and the maximum increment is about 30%. Finally, a corrugated structure-eccentric beam combination bending mechanism is introduced in this paper to bend the flap by rotating the eccentric beam.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Aeronautics - Volume 30, Issue 3, June 2017, Pages 988-1003
نویسندگان
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