Mechanical and Hydraulic Power Transmission

What is the principle behind mechanical transmission of power?

Using oil of some sort
Using shafts, gears, chains, belts, etc. (correct)
Using wires and transformers
Using liquids or gas in a confined space

What is the primary function of the supply circuit in a hydraulic system?

To multiply the force
To filter the working fluid
To control the flow of electricity
To feed the required amount of working fluid at the desired pressure (correct)

What is the term 'hydraulics' originally based on the study of?

Liquids and gases in a confined space
Force transmission and multiplication
Oil and its applications
Water at rest and in motion (correct)

What is the purpose of filtration in a hydraulic system?

To purify the working fluid (C) Signup and view all the answers

What is the primary medium used in hydraulic systems?

An oil of some sort (D) Signup and view all the answers

What is the benefit of using a hydraulic system?

To multiply the force applied (C) Signup and view all the answers

What is the purpose of the non-return valve 10?

To prevent a discharge of the hydraulic accumulator (B) Signup and view all the answers

What is a hydraulic reservoir designed to do?

To store sufficient hydraulic fluid for all conditions of operation (D) Signup and view all the answers

What is the purpose of standpipes in hydraulic reservoirs?

To draw fluid during normal operation (A) Signup and view all the answers

What happens to air bubbles in the hydraulic reservoir?

They are purged from the fluid (B) Signup and view all the answers

What type of aircraft do non-pressurized reservoirs typically serve?

Aircraft that are not designed for violent maneuvers (C) Signup and view all the answers

What is a feature of hydraulic reservoirs to prevent foreign matter entry during servicing?

Filler neck (C) Signup and view all the answers

What is the initial pressure of the hydraulic system when the accumulator is first charged?

0 psi (A) Signup and view all the answers

At what pressure does the hydraulic system pump need to create before the hydraulic fluid can actuate the piston?

1,301 psi (B) Signup and view all the answers

What happens to the compressed air when the system pressure is lowered?

It expands against the piston (C) Signup and view all the answers

What is the primary purpose of maintenance in accumulators?

To prevent injury and damage (C) Signup and view all the answers

What must be done before disassembling an accumulator?

Discharge the preload air pressure (D) Signup and view all the answers

What is the position of the piston when the system pressure reaches 3,000 psi?

It is at the normal operating position (D) Signup and view all the answers

What is the purpose of the small piston in the cylindrical reservoir?

To provide head pressure for high altitude operation (A) Signup and view all the answers

Where can filters be located in a hydraulic system?

In the reservoir, pressure line, return line, or any other location (A) Signup and view all the answers

What happens when the filter becomes clogged?

The filter bypass valve opens (A) Signup and view all the answers

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 (B) Signup and view all the answers

What is the accumulator composed of?

A steel sphere divided into two chambers by a synthetic rubber diaphragm (C) Signup and view all the answers

Why is dirty oil preferred over no flow at all?

Because it allows continued operation of aircraft systems (D) Signup and view all the answers

What is the potential consequence of not releasing the preload?

Serious injury to the technician (C) Signup and view all the answers

What type of power supply is used in the system?

Hydraulic power supply (C) Signup and view all the answers

What is the advantage of the system's design?

Reduced system weight (D) Signup and view all the answers

What is the function of the stabilizer trim?

To control flight control surfaces (C) Signup and view all the answers

What is the purpose of the accumulated power in the system?

To supplement the power pump during high demand (C) Signup and view all the answers

What is the benefit of integrating essential valves in the system?

To reduce the system's weight (A) Signup and view all the answers