It is usual when carrying out tank tests on seaplane models to include measurements of the change in attitude when pitching moments of different amounts are applied. The measurements are generally made over a range of speeds in the neighbourhood of three‐quarters of the take‐off speed, in the neighbourhood of one‐third of the take‐off speed, and also with the hull or floats at rest. Curves of attitude against speed, with different applied moments, are shown in Fig. 11, for a twin‐float seaplane, and may be regarded as typical.
Garner, H.M. and Coombes, L.P. (1930), "Seaplane Hulls and Floats: An Epitome of Present Knowledge with Suggestions for Future Research", Aircraft Engineering and Aerospace Technology, Vol. 2 No. 9, pp. 223-225. https://doi.org/10.1108/eb029310
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