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Figure 3.
Mean ± SD speed specific drag, as calculated based on the different methods. kp: passive drag coefficient; kaPL = active drag coefficient, as determined by means of the “planimetric method”; kaST = active drag coefficient, as determined by means of the “residual thrust method”; kaSTfit = active drag coefficient, as determined by means of the “residual thrust method” (model fitting). Individual values are reported in Table 2.
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