PSI - Issue 84

Gian Felice Giaccu et al. / Procedia Structural Integrity 84 (2026) 1055–1062

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Fig. 3. Installation of Section Model 1 in Northeastern University’s wind tunnel: (a) bottom view, (b) three-dimensional view, and (c,d) wind tunnel setup 3.2. Wind Tunnel Results: Observation of Flutter Occurrence with and without Gyroscopic Stabilizer Figure 4 shows the effect of the input DC voltage, applied to the DC motors used to engage the stabilier, on the gyroscopic device’s dynamic properties: (a) angular velocity and (b) gyricity Ω , for both Section Models 1 and 2. In Fig. 4(a), is obtained by interpolating preliminary experimental measurements without wind flow, taken at incremental voltage steps, after the system and stabilizer reached steady state.

(a) (b) Fig. 4. Relationship between the input voltage to the electric motor and (a) angular velocity and (b) gyricity Ω of the gyroscopic devices in Section Models 1 and 2