Table 1: Flutter uncertainty by the PCE method.

One-dimensional polynomial order Mean value for flutter velocity: m/sStandard error for flutter velocity: m/sVelocity range: m/s

136.50.7835[35.0, 38.1]
236.50.7840[35.1, 38.2]
336.50.7877[34.9, 38.2]
436.50.7987[34.8, 38.3]
536.50.8137[34.5, 38.6]