22 Questions
What is the primary function of the Ground Service Panel?
To connect a hydraulic ground support cart
What is the purpose of air pressurization/depressurization of the blue hydraulic system reservoir?
To perform ground handling or maintenance tasks
Where is the Ground Service Panel typically located?
On the exterior of the aircraft
What is the relationship between the bleed air supply and the hydraulic system?
The bleed air supply is used for pressurization/depressurization of the hydraulic reservoir
What component is responsible for regulating hydraulic pressure in the system?
Pressure Regulating Valve
What system is responsible for distributing pressurized air to various components?
Pneumatic Air Distribution System
What is the primary function of the blue system Electrical Motor Pump (EMP)?
To operate the hydraulic system consumers for ground maintenance and operation
Where is the blue system accumulator located?
In the HP manifold
What allows the continuous supply of hydraulic fluid to the blue system consumers?
The check valve
What is the purpose of the extra hydraulic accumulator dedicated to the Blue Braking System?
It will be covered in detail on ATA32
During ground maintenance, what allows fluid flow from the EMP or ground supply to the blue hydraulic system flight control consumers tests?
The selector valve
What are the hydraulic system consumers that receive power from the blue system?
The flight controls, normal and parking brake, cargo ramp, stabilizer struts, cargo door, air deflector, ramp toes and Hose Drum Unit (HDU) Fuel Pump
What is the primary function of the Reservoir Pressurization Unit?
Not mentioned in the text
What is the relationship between the blue system and the Bleed Air System?
Not mentioned in the text
What is the primary function of the High Pressure Manifold in the A400M Hydraulic Power SubSystem?
To receive high pressure fluid from the Engine Driven Pumps (EDP) and distribute it to the hydraulic system consumers
What type of valve is integrated into the High Pressure Manifold?
Pressure Relief Valve
What component transmits a pressure signal to the Flight Control Computers and to the Control and Display System (CDS)?
System Pressure Transducers
What device sends a signal to the High Lift Control Computers (HLCC) in case of low system pressure?
Pressure Switch
What system does the High Pressure Manifold distribute high pressure fluid to?
Blue/Yellow Hydraulic System
What is the function of the Pressure Relief Valve in the High Pressure Manifold?
To release fluid back to the LP system when the system pressure becomes too high
What is the source of high pressure fluid received by the High Pressure Manifold?
Engine Driven Pumps (EDP)
What is the purpose of the system accumulator in the High Pressure Manifold?
To store hydraulic fluid under pressure
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
This quiz covers the Ground Service Panel and High Pressure Manifold components in aircraft hydraulic systems, including their functions and connections.
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