ROBINSON R44 HYDRAULIC SYSTEM Robinson R44 Raven II pilot training course,

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ROBINSON R44 RAVEN II PILOT TRAINING COURSE  

How to fly Robinson R44 Raven II, 100% free pilot training, Robinson R44 Raven fly, learn Robinson,

HYDRAULIC SYSTEM
Hydraulically-boosted main rotor flight controls eliminate cyclic and collective feedback forces. The hydraulic system consists of a pump, three servos, a reservoir, and interconnecting lines. The working fluid is MIL-H-5606 and normal operating pressure is 450 to 500 psi. The pump is mounted on and driven by the main gearbox. A servo is connected to each of the three push-pull tubes that support the main rotor swashplate. The reservoir is mounted on the steel tube frame behind the main gearbox and includes a filter, pressure relief valve, and pilot-controlled pressure shut-off valve.A sight gage for pre-flight fluid level checks is incorporated in the reservoir and is visible by opening a right side cowl door. A vented filler cap is located on top of the reservoir.The pressure shut-off valve is solenoid-actuated and controlled by the hydraulic switch on the pilot’s cyclic. The switch should be left ON during helicopter shutdown and start up except during the hydraulic system check.

NOTE
Electrical power is required to switch 
hydraulics OFF. Pulling HYD circuit breaker will NOT turn off hydraulics but will disable hydraulic switch.

Without hydraulic pressure, a large pilot input force is required to increase collective. Collective inputs also cause 
longitudinal cyclic forces which makes it difficult to maintain a steady hover. The servos have an irreversible 
feature to prevent rotor feedback forces from moving the controls. This allows the pilot to relax pressure on the controls in steady cruise flight. However, any cyclic input 
will cause the collective to lower and therefore the collective will have to be increased periodically.

CLICK 👉 ROBINSON R44 HANDBOOK

CLICK 👉 PREFLIGHT INSPECTION

CLICK 👉 BEFORE STARTING

CLICK 👉  START ENGINE

CLICK 👉 TAKEOFF

CLICK 👉 CRUISE

CLICK 👉 PRACTICE AUTOROTATION - POWER RECOVERY

CLICK 👉 PRACTICE AUTOROTATION - WITH GROUND CONTACT

CLICK 👉 DESCENT, APPROACH, AND LANDING

CLICK 👉 SHUTDOWN

CLICK 👉 INSTRUMENT PANEL NAME LIST

CLICK 👉 WEIGHT LIMITS

CLICK 👉 FLIGHT AND MANEUVER LIMITATIONS

CLICK 👉 FUEL CAPACITY 

CLICK 👉 POWER FAILURE ABOVE 500 FEET AGL

CLICK 👉 POWER FAILURE BETWEEN 8 FEET AND 500 FEET AGL

CLICK 👉 EMERGENCY WATER LANDING – POWER OFF

CLICK 👉 EMERGENCY WATER LANDING – POWER ON

CLICK 👉 LOSS OF TAIL ROTOR THRUST IN FORWARD FLIGHT

CLICK 👉 LOSS OF TAIL ROTOR THRUST IN HOVER

CLICK 👉 ENGINE FIRE DURING START ON GROUND

CLICK 👉 ENGINE FIRE IN FLIGHT

CLICK 👉 ELECTRICAL FIRE IN FLIGHT

CLICK 👉 TACHOMETER FAILURE

CLICK 👉 HYDRAULIC SYSTEM FAILURE

CLICK 👉 GOVERNOR FAILURE

CLICK 👉 ROTOR SYSTEMS

CLICK 👉 DRIVE SYSTEM

CLICK 👉 FLIGHT CONTROLS

CLICK 👉 REMOVABLE FLIGHT CONTROLS

CLICK 👉 CONTROL FRICTION ADJUSTMENT

CLICK 👉 RPM GOVERNOR

CLICK 👉 HYDRAULIC SYSTEM

CLICK 👉 ENGINE CONTROLS

CLICK 👉 CLUTCH ACTUATOR

CLICK 👉 ELECTRICAL SYSTEM

CLICK 👉 LIGHTING SYSTEM

CLICK 👉 EXTERNAL POWER RECEPTACLE

CLICK 👉 AUDIO SYSTEM

CLICK 👉 OPTIONAL AVIONICS

CLICK 👉 PITOT-STATIC SYSTEM

CLICK 👉 DUAL TACHOMETER

CLICK 👉 WARNING AND CAUTION LIGHTS

CLICK 👉 CABIN HEATING AND VENTILATION

CLICK 👉 SEATS, BELTS, AND BAGGAGE

CLICK 👉 LANDING GEAR

CLICK 👉 ROTOR BRAKE

CLICK 👉 CARBON MONOXIDE DETECTOR

CLICK 👉 EMERGENCY LOCATOR TRANSMITTER (OPTIONAL)

CLICK 👉 OPTIONAL ACCESSORY MOUNTS

CLICK 👉 REQUIRED DOCUMENTS

CLICK 👉 PARKING

CLICK 👉 CABIN DOORS

CLICK 👉 TAIL ROTOR GEARBOX OIL

CLICK 👉 HYDRAULIC FLUID

CLICK 👉 BATTERY

CLICK 👉 FUEL

CLICK 👉 CLEANING HELICOPTER

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