A400M Hydraulic Power SubSystem

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Questions and Answers

What is the primary function of the Ground Service Panel (GSP) in the A400M aircraft?

To monitor hydraulic system pressure

To connect a hydraulic ground support cart to operate the hydraulic system (correct)

To control the engine driven pumps

To manage fluid exchange systems

What is the purpose of the blue hydraulic system reservoir in the A400M aircraft?

To allow air pressurization/depressurization for maintenance tasks (correct)

To store hydraulic fluid for emergency use

To supply hydraulic fluid to consumers during ground handling

To provide a backup system for hydraulic power

What is required for the hydraulic system to operate during ground handling or maintenance tasks when bleed air supply is not available?

Electrical power from the aircraft

Manual operation of the engine driven pumps

Hydraulic power from the ground support cart

Air pressurization/depressurization of the blue hydraulic system reservoir (correct)

What is the benefit of using the Ground Service Panel (GSP) in the A400M aircraft?

It enables the connection of a hydraulic ground support cart for ground handling and maintenance tasks Signup and view all the answers

What is the primary safety concern when operating the hydraulic system using the Ground Service Panel (GSP) in the A400M aircraft?

Over-pressurization of the hydraulic system Signup and view all the answers

What is the role of the engine driven pumps in the A400M aircraft's hydraulic system?

To operate the hydraulic system during flight Signup and view all the answers

What is the primary function of the High Pressure Manifold in the A400M Hydraulic System?

To receive high pressure fluid from the Engine Driven Pumps and distribute it to the Blue/Yellow Hydraulic System consumers Signup and view all the answers

What is the purpose of the Pressure Relief Valve in the High Pressure Manifold?

To release the fluid back to the LP system when the pressure becomes too high Signup and view all the answers

What is the function of the System Pressure Transducers in the High Pressure Manifold?

To transmit a pressure signal to the Flight Control Computers and the Control and Display System Signup and view all the answers

What is the source of the high pressure fluid received by the High Pressure Manifold?

The Engine Driven Pumps Signup and view all the answers

What is the purpose of the Pressure Switch in the High Pressure Manifold?

To sense low system pressure and send a signal to the High Lift Control Computers Signup and view all the answers

What is the function of the system accumulator in the A400M Hydraulic System?

To store energy and supply it to the system when needed Signup and view all the answers

What is the purpose of the Control and Display System (CDS) in the A400M Hydraulic System?

To display the system pressure on the system display page Signup and view all the answers

What is the function of the LP circuit in the A400M Hydraulic System?

To connect the High Pressure Manifold to the LP system Signup and view all the answers

What is the purpose of the blue system accumulator located in the HP manifold?

To supplement the flow from the system pumps during short-term and high flow consumer demands Signup and view all the answers

What type of pump is used to operate the hydraulic system during ground maintenance?

Electrical Motor Pump (EMP) Signup and view all the answers

What is the purpose of the selector valve in the hydraulic system?

To allow for fluid flow from the EMP or ground supply during ground maintenance Signup and view all the answers

What is the function of the check valve in the hydraulic system?

To prevent backflow of hydraulic fluid during engine start-up Signup and view all the answers

Which system does the hydraulic blue system supply power to?

Flight controls, normal and parking brake, cargo ramp, stabilizer struts, cargo door, air deflector, ramp toes, and Hose Drum Unit (HDU) Fuel Pump Signup and view all the answers

What is the purpose of the hydraulic system in the A400M aircraft?

To provide hydraulic power to various systems in the aircraft Signup and view all the answers

What is the function of the hydraulic accumulator dedicated to the Blue Braking System?

To provide additional hydraulic power during high-demand situations Signup and view all the answers

What is the purpose of the ground supply in the hydraulic system?

To supply hydraulic fluid to the system during ground maintenance Signup and view all the answers

Study Notes

Ground Service Panel (GSP)

Enables connection of hydraulic ground support cart to operate hydraulic system and supply its consumers
Allows air pressurization/depressurization of blue hydraulic system reservoir for ground handling or maintenance tasks when bleed air supply is not available

High Pressure Manifold

Receives high pressure fluid from Engine Driven Pumps (EDP) and distributes it to Blue/Yellow Hydraulic System consumers, LP circuit, and system accumulator
Incorporates:
- Three System Pressure Transducers transmitting pressure signal to Flight Control Computers and Control and Display System (CDS)
- One Pressure Switch sensing low system pressure and sending signal to High Lift Control Computers (HLCC)
- One Pressure Relief Valve integrated in the manifold, releasing fluid back to LP system when system pressure becomes too high

Hydraulic Consumers

Blue System Consumers

Hydraulic blue system supplies power to:
- Flight controls
- Normal and parking brake
- Cargo ramp
- Stabilizer struts
- Cargo door
- Air deflector
- Ramp toes
- Hose Drum Unit (HDU) Fuel Pump
Blue system Electrical Motor Pump (EMP) enables hydraulic system consumers to be operated for ground maintenance and operation
One blue system accumulator, located in HP manifold, supplements flow from system pumps during short-term and high flow consumer demands
Selector valve lets continuous supply via check valve from EDPs when at least one engine is running
During ground maintenance, selector valve can be opened to grant fluid flow from EMP or ground supply to blue hydraulic system flight control consumers tests

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Description

This quiz is based on the A400M Training Manual, focusing on the Hydraulic Power SubSystem. It covers the description and related concepts of the system.