منابع مشابه
The Effect of Steady Tailplane Lift on the Oscillatory Behaviour of a T-Tail Flutter Model at High Subsonic Speeds
The oscillatory behaviour of a T-tail has been investigated at high subsonic Mach numbers on an aero-elastic model having tailplane settings of zero and three degrees. There is broadly satisfactory agreement between calculated and measured values of modal frequency and damping. The comparison has been based mainly on the flutter margin criterion of Zimmerman and Weissenburger, since the more co...
متن کاملStructural resonance and mode of flutter of hummingbird tail feathers.
Feathers can produce sound by fluttering in airflow. This flutter is hypothesized to be aeroelastic, arising from the coupling of aerodynamic forces to one or more of the feather's intrinsic structural resonance frequencies. We investigated how mode of flutter varied among a sample of hummingbird tail feathers tested in a wind tunnel. Feather vibration was measured directly at ~100 points acros...
متن کاملA Note on Flutter of Asymmetric Controls
This Paper attempts to give some guidance on the question, of how best to approximate to an aircraft with an asymmetric elevator control for the purpose of flutter calculations. Two examples of asymmetric controls that are.common in practice are (1) the design case of a partitioned elevator each part having its own separate power unit and with one such unit having failed, and (2) the asymmetric...
متن کاملAuricular Flutter
Auricular flutter was first described by McWilliam in 1887 (Mackenzie, 1925) as a result of experimental stimulation. Ritchie (1905) obtained graphic records from the jugular vein, and Jolly and Ritchie (1908) (Mackenzie, loc. cit.) took electrocardiographic tracings from one of Ritchie's cases of auricular flutter. Mackenzie looking back through his old records found cases of auricular flutter...
متن کاملDiaphragmatic flutter.
A case is reported of diaphragmatic flutter with an unusually long duration of symptoms. The patient described demonstrates many of the classical features of this disorder.
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ژورنال
عنوان ژورنال: Journal of the Japan Society for Aeronautical and Space Sciences
سال: 1971
ISSN: 0021-4663
DOI: 10.2322/jjsass1969.19.495