A Survey of Unsteady Hypersonic Flow Problems
A Survey of Unsteady Hypersonic Flow Problems
A Survey of Unsteady Hypersonic Flow Problems
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A "flutter" speed and frequency can then be found from these equations<br />
in the usual way if a value is assumed for a,. It oan be shown that<br />
equations (4.16) are the same as the linearized equations for flutter abwt .s<br />
large mean incxdence as if a, is replaced by as. Since q is, in fact,<br />
one half <strong>of</strong> the amplitude <strong>of</strong> the motion, it follows from this analysts that the<br />
flutter speed and frequency for an oscillation <strong>of</strong> large amplitude are the same<br />
as for the linearxzed flutter about a mean angle <strong>of</strong> attack as = q. Fig. 46,<br />
then, shows a boundary for the non-linear flutter case, es well as for the large