HYDRAULIC MENU System presentation 1 19 The A

HYDRAULIC MENU System presentation 1/19

The A 320 family has three independent hydraulic systems : - GREEN, - YELLOW, - and BLUE. Now, let’s look at the systems in more detail. HYDRAULIC MENU System presentation 2/19

The GREEN and YELLOW hydraulic systems are each pressurized by an engine driven pump. HYDRAULIC MENU System presentation 3/19

The YELLOW hydraulic system can also be pressurized by an electric pump. HYDRAULIC MENU System presentation 4/19

A Power Transfer Unit (PTU) enables the GREEN system to be pressurized by the YELLOW system and vice versa. HYDRAULIC MENU System presentation 5/19

Fire shut off valves are located between the reservoirs and the engine driven pumps. HYDRAULIC MENU System presentation 6/19

The BLUE hydraulic system is pressurized by an electric pump. HYDRAULIC MENU System presentation 7/19

In an emergency the BLUE system can be pressurized by the Ram Air Turbine (RAT). HYDRAULIC MENU System presentation 8/19

Each hydraulic system delivers a constant pressure to the users. GREEN USERS 3000 HYDRAULIC PSI BLUE USERS 3000 MENU YELLOW USERS PSI 3000 System presentation 9/19

GREEN USERS 3000 BLUE USERS 3000 PSI YELLOW USERS 3000 PSI RAT ELEC 1 2 All the components we have talked about are displayed on the ECAM HYD page. HYDRAULIC MENU System presentation 10/19

Let’s briefly review the basic system using the ECAM HYDRAULIC page. . The reservoirs, . The fire shut-off valves, HYDRAULIC MENU System presentation 11/19

. The pumps, . The RAT, HYDRAULIC MENU System presentation 12/19

. The PTU, . The pressure indications. HYDRAULIC MENU System presentation 13/19

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. HYDRAULIC MENU System presentation 14/19

The hydraulic system is fully automatic. However each pump and the PTU have an associated pushbutton switch for abnormal operation. HYDRAULIC MENU System presentation 15/19

Each hydraulic engine pump is controlled by a pb sw located on the overhead panel. HYDRAULIC MENU System presentation 16/19

Each hydraulic electrical pump is controlled by a pb sw. HYDRAULIC MENU System presentation 17/19

The PTU is controlled by a pb sw. HYDRAULIC MENU System presentation 18/19

The RAT may be extended manually by using this guarded pb sw. HYDRAULIC MENU Module completed System presentation 19/19 NEXT

LIST OF SUBJECTS YELLOW AND GREEN CIRCUITS BLUE CIRCUIT ECAM PAGE CONTROLS AUDIO GLOSSARY RETURN HYDRAULIC FCOM EXIT MENU System presentation 20/19