Gulfstream V Operating Manual

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2A-27-10: General:
The flight controls system for the Gulfstream V is hydraulically powered, providing boost
to mechanical linkages to overcome aerodynamic forces associated with high speed
flight. Tandem type hydraulic actuators, receiving hydraulic fluid under pressure from two
independent systems (Left and Right hydraulic systems), are used to move the flight
control surfaces. Both hydraulic systems maintain a system pressure of 3000 psi. Loss of
system pressure by one hydraulic system has no effect on operation of the flight controls,
as the remaining system is capable of maintaining actuator load capacity. In the event of
total loss of hydraulic pressure in both hydraulic systems, the primary flight controls
revert to manual operation.
The flight controls are divided by function as follows (see Figure 2):
• Primary Flight Controls:
The primary flight controls consist of the ailerons, elevators and rudder.
• Secondary Flight Controls:
Secondary flight controls consist of flaps and spoilers.
• Trim Controls:
Trim controls consist of an aileron trim tab, horizontal stabilizer, two elevator trim
tabs and a trimmable rudder. The aileron and elevator trim tabs are mass
balanced to prevent control flutter.
The flight controls system is divided into the following subsystems:
• 2A-27-20: Pitch Flight Control System
• 2A-27-30: Yaw Flight Control System
• 2A-27-40: Roll Flight Control System
• 2A-27-50: Horizontal Stabilizer System
• 2A-27-60: Flaps System
• 2A-27-70: Spoiler System
• 2A-27-80: Gust Lock System
PRODUCTION AIRCRAFT SYSTEMS
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OPERATING MANUAL
FLIGHT CONTROLS
2A-27-00
Page 1
May 22/01