Gleb V.Liseykin, Mikhail M.Bogatyrev, Mikhail A.Pronin, Vsevolod I.Smyslov

DOI Number: N/A

Conference number: IFASD-2015-027

Modal tests and experiments in artificial flow (provided by electromechanical modeling method EMM) are conducted with elastically scaled model developed for wind tunnel (WT) flutter research before entering WT for actual tests. The main objective of EMM tests is to determine modal characteristics of the model out of the flow and “in the EMM flow” within stability boundaries and their dependence on model parameters and flow conditions. Concentrated aerodynamic forces which depend on oscillations of several points of the scaled model are being computed in real time by special computing unit based on different aerodynamic theories that may be selected by a tests engineer. Data acquisition and excitation systems intended for wind tunnel flutter tests may be adjusted during EMM tests. Some additional measurements with EMM are carried out at the end of wind tunnel tests including conditions not investigated in the WT. Some experimental results on dynamically scaled elevator model are presented. Analysis of the data, assessment of the advantages and limitations of the EMM method are given in this work.

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In Categories: 2. IFASD 2015, Experimental Methods & Bridges
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