30 Questions
What is the principle behind mechanical transmission of power?
Using shafts, gears, chains, belts, etc.
What is the primary function of the supply circuit in a hydraulic system?
To feed the required amount of working fluid at the desired pressure
What is the term 'hydraulics' originally based on the study of?
Water at rest and in motion
What is the purpose of filtration in a hydraulic system?
To purify the working fluid
What is the primary medium used in hydraulic systems?
An oil of some sort
What is the benefit of using a hydraulic system?
To multiply the force applied
What is the purpose of the non-return valve 10?
To prevent a discharge of the hydraulic accumulator
What is a hydraulic reservoir designed to do?
To store sufficient hydraulic fluid for all conditions of operation
What is the purpose of standpipes in hydraulic reservoirs?
To draw fluid during normal operation
What happens to air bubbles in the hydraulic reservoir?
They are purged from the fluid
What type of aircraft do non-pressurized reservoirs typically serve?
Aircraft that are not designed for violent maneuvers
What is a feature of hydraulic reservoirs to prevent foreign matter entry during servicing?
Filler neck
What is the initial pressure of the hydraulic system when the accumulator is first charged?
0 psi
At what pressure does the hydraulic system pump need to create before the hydraulic fluid can actuate the piston?
1,301 psi
What happens to the compressed air when the system pressure is lowered?
It expands against the piston
What is the primary purpose of maintenance in accumulators?
To prevent injury and damage
What must be done before disassembling an accumulator?
Discharge the preload air pressure
What is the position of the piston when the system pressure reaches 3,000 psi?
It is at the normal operating position
What is the purpose of the small piston in the cylindrical reservoir?
To provide head pressure for high altitude operation
Where can filters be located in a hydraulic system?
In the reservoir, pressure line, return line, or any other location
What happens when the filter becomes clogged?
The filter bypass valve opens
What is the principle of operation of a filter bypass valve?
The valve opens when the filter becomes clogged and the pressure over the filter increases
What is the accumulator composed of?
A steel sphere divided into two chambers by a synthetic rubber diaphragm
Why is dirty oil preferred over no flow at all?
Because it allows continued operation of aircraft systems
What is the potential consequence of not releasing the preload?
Serious injury to the technician
What type of power supply is used in the system?
Hydraulic power supply
What is the advantage of the system's design?
Reduced system weight
What is the function of the stabilizer trim?
To control flight control surfaces
What is the purpose of the accumulated power in the system?
To supplement the power pump during high demand
What is the benefit of integrating essential valves in the system?
To reduce the system's weight
Test your understanding of power transmission methods, including mechanical, electrical, and fluid power transmission. Learn about the basics of hydraulic systems and their applications.
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