. Analysis of test data on the performance characteristics of planning and displacement floats for supporting submerged loads. Towing; Pontoons. Figure 21a - Photographs of the Two Types of Flow at Knots In the photograph on the left, the float was accelerated to 5•94. knots; in the photograph on the right, the floa^t was decelerated fl^m a speed beyond the hysteresis Figure 21b - Photographs of the Two Types of Flow at Knots In the photograph on the left, the float was accelerated to knots; the photograph on the right shows the float just after it had suddenly yawed t
. Analysis of test data on the performance characteristics of planning and displacement floats for supporting submerged loads. Towing; Pontoons. Figure 21a - Photographs of the Two Types of Flow at Knots In the photograph on the left, the float was accelerated to 5•94. knots; in the photograph on the right, the floa^t was decelerated fl^m a speed beyond the hysteresis Figure 21b - Photographs of the Two Types of Flow at Knots In the photograph on the left, the float was accelerated to knots; the photograph on the right shows the float just after it had suddenly yawed to its port side with a resultant breakdown of flow to the more stable type in which water is thrown forward and to the sides. Figure 21 - Photographs of the Flow about the TMB Planing Float in the Hysteresis Region These tests were made under loads imposed by the 100-pound weight towed from the forward towpoint. this region, showing the hysteresis loop, is plotted in Figure 22. The photo- graphs in Figure 21a, which were both taken at a speed of 5-9^ knots, exhibit clearly the two possible types of flow in the hysteresis region. Near the entrance of the hysteresis loop, shown in Figure 22, conditions are least stable, and the flow tends to change from one type to the other. The flow in which water is thrown forward of the float, occurring on the upper branch of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Eisenberg, Phillip; David W. Taylor Model Basin. Washington, D. C. : Dept. of the Navy, David Taylor Model Basin
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