翼の突風応答に関する研究

第1報 2次元剛体翼の応答

抄録

In this report the investigation on the response of a two-dimensional rigid wing to the gusts is made. The kinds of the gusts which are treated here, are that vary sinusoidally and vary randomly.
The experiments are performed using a wing model which has the cross section of NACA-0012. In the case of the sinusoidal gust, the following results are obtained.
(1) The results of this experiments coincide with the results of oscillating wing.
(2) The values of the non-dimensional lift are lower than the value of Sears' gust function.
In the case of the random gust, the frequency transfer functions of the lift show the different inclination from Sears' function.
It is considered at the theoretical analysis that the thickness effect of the wing to the gust response is investigated by the numerical calculations for the sinusoidal gusts, and for the random gusts the frequency transfer functions are obtained by means of obtaining the power-spectral functions of circulation. The former affects little at the range of the experiments, but the latter coincides to the results of the experiments.