17 Questions
What type of base fluid is essentially castor oil and alcohol?
Vegetable Based Hydraulic Fluid
Why should a hydraulic fluid not foam in operation?
To ensure air does not get carried into the components
What type of seals and hoses are typically used with Mineral base fluid?
Neoprene
Which component in a hydraulic system holds a supply of operational fluid?
Reservoirs
What is the purpose of accumulators in a hydraulic system?
Provide an additional source of hydraulic energy
Which type of valve in a hydraulic system adjusts, regulates, or limits the amount of pressure?
Pressure relief valve
What is the ultimate function of any hydraulic or pneumatic system?
Convert the pressure in the fluid into work
What is the purpose of hydraulic accumulators?
Prevent the pressure from changing rapidly
Which component of a hydraulic system is responsible for producing straight-line movement?
Linear actuators
What is the purpose of seals in hydraulic systems?
Minimize internal leakage
What is the function of the hydraulic pressure manifold in a hydraulic system?
Fill the reservoir with compressed air or nitrogen
Which component is responsible for delivering a properly pressured, continuous supply of fuel in an aircraft?
Hydraulic pump
What type of tank is a bladder fuel tank?
Rubberized bag
What is the purpose of a fuel primer in an aircraft's fuel system?
To vaporize fuel directly into the cylinders prior to starting the engine
Which component in a hydraulic system is responsible for providing a means for shutting off the fuel flow and for fuel transfer?
Hydraulic valve
What property must hydraulic fluid possess in order to flow smoothly through all hydraulic lines with minimal opposition?
Incompressibility
What is the advantage of having an output piston larger than the input piston in a hydraulic system?
Mechanical advantage
Test your knowledge on different types of hydraulic fluids used in hydraulic systems. Learn about the characteristics and compatibility requirements of vegetable base, mineral base, and synthetic hydraulic fluids.
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