Model of a Two-Blade Parabolic Propeller, Model of a two-blade parabolic propeller in a frame on a floorboard. The pressure surface of the propeller blades is curved in the form of a parabola. The screw probably does not belong in this frame, which can hold a much larger screw. The model has a diameter of 85 mm, the hub has a diameter of 8 mm and is probably too long in relation to the actual size to fit in the frame. 1:20 scale (derived)., anonymous, 1844 and/or c. 1850, wood (plant material), brass (alloy), h 18 cm × w 14.2 cm × d 9.1 cm
Keywords:
Model, Two-Blade Parabolic Propeller, two-blade parabolic propeller, frame, floorboard, pressure surface, propeller blades, curved, form, parabola, screw, belong, hold, larger screw, model, diameter, 85 mm, hub, 8 mm, too long, relation, actual size, fit, 1, 20 scale, derived, 1844, c, 1850, wood, plant material, brass, alloy
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