کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7154167 1462497 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An experimental system for release simulation of internal stores in a supersonic wind tunnel
ترجمه فارسی عنوان
یک سیستم آزمایشی برای شبیه سازی انتشار فروشگاه های داخلی در یک تونل باد صوت
کلمات کلیدی
سیستم دید دوقلو، اندازه گیری پوزیشن، مکانیزم آزادسازی تونل باد،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
چکیده انگلیسی
Aerodynamic parameters obtained from separation experiments of internal stores in a wind tunnel are significant in aircraft designs. Accurate wind tunnel tests can help to improve the release stability of the stores and in-flight safety of the aircrafts in supersonic environments. A simulative system for free drop experiments of internal stores based on a practical project is provided in this paper. The system contains a store release mechanism, a control system and an attitude measurement system. The release mechanism adopts a six-bar linkage driven by a cylinder, which ensures the release stability. The structure and initial aerodynamic parameters of the stores are also designed and adjusted. A high speed vision measurement system for high speed rolling targets is utilized to measure the pose parameters of the internal store models and an optimizing method for the coordinates of markers is presented based on a priori model. The experimental results show excellent repeatability of the system, and indicate that the position measurement precision is less than 0.13 mm, and the attitude measurement precision for pitch and yaw angles is less than 0.126°, satisfying the requirements of practical wind tunnel tests. A separation experiment for the internal stores is also conducted in the FL-3 wind tunnel of China Aerodynamics Research Institute.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Aeronautics - Volume 30, Issue 1, February 2017, Pages 186-195
نویسندگان
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