Technical Memorandum of National Aerospace Laboratory
巻
178
ページ
17
発行年
1970-05
抄録（英）
A forsed-oscillation apparatus for measuring dynamic stability derivatives has been completed in NAL 6m low-speed wind-tunnel.This appartus is capable of forcing a model to perform a single-degree-of-freedom angular oscillation about its pitch, yow, and roll axes with maximum frecuency of 1 Hz and with maximum amplitude of 10°, by means of a 30-PS variable-frequency electric moter and a crank mechanism.The output of the balance inserted in the model, is processed by an analogue readout system utilizing a manually-adjusted null method.The results of the tests which were carried out to confirm the reliability of this method using a conventional airplane model, revealed that it was satisfactory.Some of the difficulties affecting the accuracy of the test are discussed.
大型低速風胴動安定微係数測定装置
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