ABSTRACT
Each known problem solving of elastic construction dynamics under the influence of wind loads supposes there is indispensable for the calculations information about aerodynamic forces which can be obtained experimentally only. This is the main trouble of all aeroelastic problems as to obtain reliable information concerning the working aerodynamic forces needs a great number of experiments and finally it is connected with sizeable expenditures than subsequent motion equation solution. In this connection the practical significance of similar investigations exceeds the bounds of oscillating bodies behavior in a wind flow owing to technical actuality of
analogous researches for liquid flowing rod construction, for example, submarine pulp feed-lines. That's why it is advisable to considerate from the scientific point of view more common problem of self-excited oscillation beginning mechanism for elastic constructions being flown by air or liquid.
