196 REPORT NO. 551 NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS … Time 30° foS°, seconds not simple to meet because low overawing and low Figure 32.—Summary chart, overawing against time of swing. swirl are conflicting requirements as may be, seen in figure 34. Low overawing may be obtained by the use of weak magnets and a viscous damping liquid but 100 their use…
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