The rudder torque capacity of the four-ram...

Question 1 / 2066636ef128f7522a1c523604

Question 1 of 2066636ef128f7522a1c523604

The rudder torque capacity of the four-ram steering gear illustrated, is rated at 44,210,000 inch-pounds with one power unit in operation. If the four-ram system was able to be operated as a two-ram system with both power units on line, what would be the available torque? Illustration GS-0067

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66636ef128f7522a1c523604

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🔍 Key Concepts

• Relationship between number of rams and total rudder torque in a ram-type steering gear • Effect of number of power units (pumps) on pressure vs. speed of rudder movement • How hydraulic pressure × piston area × tiller arm relates to rudder torque

💭 Think About

• In the original rating, which parts of the system are actually creating the torque at the rudder: the rams or the pumps? • If you reduce the system from four rams to two rams, what happens to the total piston area acting on the tiller? • When you put both power units on line, does that normally increase maximum pressure (and thus torque), or mainly increase flow and rudder speed?

✅ Before You Answer

• Be clear whether torque depends on pressure and ram area, or directly on the number of pumps running • Decide how torque changes when the number of active rams is halved but system pressure stays the same • Confirm whether adding a second power unit would double torque or only affect rudder speed at the relief-valve pressure limit

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Question 1 of 20

11,052,500 inch-pounds

22,105,000 inch-pounds

44,210,000 inch-pounds

88,420,000 inch-pounds

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Question 1 / 2066636ef128f7522a1c523604

Question 1 of 2066636ef128f7522a1c523604

Back

Question 1 of 20

66636ef128f7522a1c523604

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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