HYDRAULIC- GREEN,
- YELLOW,
Now, let’s look at the systems in more detail.
MENU
HYDRAULIC
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The GREEN and YELLOW hydraulic systems are each pressurized by an engine driven pump.
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HYDRAULIC
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The YELLOW hydraulic system can also be pressurized by an electric pump.
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HYDRAULIC
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A Power Transfer Unit (PTU) enables the GREEN system to be pressurized by the YELLOW system and vice versa.
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HYDRAULIC
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Fire shut off valves are located between the reservoirs and the engine driven pumps.
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HYDRAULIC
The BLUE hydraulic system is pressurized by an electric pump.
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HYDRAULIC
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In an emergency the BLUE system can be pressurized by the Ram Air Turbine (RAT).
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HYDRAULIC
Each hydraulic system delivers a constant pressure to the users.
MENU
RAT
ELEC
ELEC
2
1
All the components we have talked about are displayed on the ECAM HYD page.
PSI
PSI
3000
3000
3000
HYDRAULIC
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MENU
Let’s briefly review the basic system using the ECAM HYDRAULIC page.
. The reservoirs,
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The controls for the components that we have introduced are located on the overhead hydraulic control panel.
Let’s now go to the ECAM HYD page together with the hydraulic control panel.
MENU
HYDRAULIC
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The hydraulic system is fully automatic. However each pump and the PTU have an associated pushbutton switch for abnormal operation.
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HYDRAULIC
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Each hydraulic engine pump is controlled by a pb sw located on the overhead panel.
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HYDRAULIC
Each hydraulic electrical pump is controlled by a pb sw.
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HYDRAULIC
MENU
HYDRAULIC
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The RAT may be extended manually by using this guarded pb sw.
Module completed