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ASSIGNMENT 8-Cont. - 14018_742
ASSIGNMENT 8-Cont. - 14018_744

Aviation Structural Mechanic (H&S) 3&2 - How airplanes are built and how to maintain them
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8-23. What type of hand pumps is used in naval aircraft hydraulic systems? Single-action Simple-stroke Double-action Compound-stroke IN ANSWERING QUESTION 8-24, REFER TO FIGURE 7-13 IN THE TEXTBOOK. 8-24. What action takes place when the piston in the pump is moved to the right? 1. Check valve A opens; check valve B closes; fluid enters port C 2. Check valve A closes; check valve B opens; fluid exits port D 3. Check valve A opens; check valve B closes; fluid exits port D 4. Check valve A closes; check valve B closes; fluid exits port D 8-25. When air is in the emergency hydraulic system and the handle of the hand pump is moved to the right, what handle reaction, if any, will occur? 1. It will creep slowly to the left only 2. It will creep slowly to the left and then spring rapidly to the right 3. It will spring rapidly to the left 4. None 8-26. A pump that delivers 3 gallons of fluid per minute at a speed of 2,800 rpm, and continues to deliver at that rate regardless of the pressure in the system, is known as what type of pump? A variable displacement pump A constant displacement pump A rotary action pump A gear-type pump 8-27. The use of a variable displacement pump in a hydraulic system eliminates the need for what component? A reservoir An accumulator A hydraulic fuse A pressure regulator 8-28. 8-29. 8-30. 8-31. 8-32. 8-33. Gear-type pumps are usually driven by what means? A dc electric motor An ac electric motor An aircraft engine A servo unit A piston-type (constant displacement) pump sucks fluid into one port and forces it out the other port. This is known as what type of piston motion? 1. 2. 3. 4. To Axial Rotary Reciprocating Counterrotating change the rotation of a piston- type (constant displacement) pump, you must perform which of the following functions? 1. Reverse the drive gears 2. Reverse the universal link 3. Rotate the valve plate 90 degrees 4. Rotate the valve plate 180 degrees The internal parts of a Stratopower (variable displacement) pump perform what four major functions? 1. Hydraulic drive, flow control, pressure regulation, and bypass 2. Pressure control, mechanical drive, bypass, and fluid displacement 3. Bypass, pressure regulation, fluid displacement, and hydraulic drive 4. Pressure control, flow control, mechanical drive, and pressure regulation A Stratopower pump has creep plates installed for what purpose? 1. To increase the angle of the drive cam 2. To decrease wear on the revolving cam 3. To provide a support for the stationary bearing 4. To ensure proper alignment of the nutation plate During operation of a Stratopower pump in a nonflow condition, lubrication is provided by what means? 1. A bypass system 2. A bypass piston 3. A compensator piston 4. A compensator spring 39







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