NACA0012翼型动态失速特性和测压方法的研究

 全面介绍了应用测压方法，对ＮＡＣＡ００１２翼型，在俯仰正弦振动的情况下，进行广泛实验研究的情况和结果。实验时对模型的俯仰振动频率、雷诺数、平均迎角等的影响进行较为广泛的研究。此外，还应用两种动态数据采集方法——扫描法和采样保持法，在相同的实验条件下，同时进行数据采集，对动态测试系统截止频率也进行了广泛的实验研究，利用动态测试系统的软件包，对数据进行频谱分析，在大量实验的基础上，对测压方法和两种数据采集方法进行对比与分析

DYNAM IC STALL CHARACTERS OF NACA 0012 AIRFO IL AND INVESTIGATIONS OF DYNAMIC PRESSUREM EASUREM ETHODS

The characters of dynam ic stall on NACA 0012 airfo il o scillat ing in p itch w ere inves2 t igated by experimentally determ ining p ressure dist ribut ion. The test parameters included a wide range of reduced frequencies, Reynolds numbers, amplitudes of scillation and mean angles of incidence. Two methods of highspeed data acquisitionscan and sample hold were used in the tests. The effects of filter cutoff frequencieswere investigated. The powerspect rawere analysied by VIEWDAC software package of highspeed data acquistion system. Finally, the comparisons with ther experiments and the retical calculation were presented.