Speed and depth sensing in submarines. The Pitot and Prandtl tubes are equally effective underwater. Suppose a submarine

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Speed And Depth Sensing In Submarines The Pitot And Prandtl Tubes Are Equally Effective Underwater Suppose A Submarine 1 (70.26 KiB) Viewed 13 times

Speed and depth sensing in submarines. The Pitot and Prandtl tubes are equally effective underwater. Suppose a submarine is equipped with a forward- pointing Prandtl tube. Two independent sensors are used, one to sense static pressure and the other to sense total pressure. The density of water is assumed constant with depth, equal to 1,025 kg/m³ and independent of temperature. (a) If the submarine is expected to descend to 1,000 m, what is the span required from each pressure sensor? The maximum speed of the sub- marine is 25 knots (1 knot = 1.854 km/h). (b) Show that these two measurements are sufficient to provide both the velocity and the depth of the submarine.