Position and Warning Systems Flashcards
An antiskid system is designed to
sense the declaration rate of every main landing gear wheel and release then reapply pressure at a slightly lower value when a skid is detected
In a brake antiskid system, when an approaching skid is sensed, an electrical signal is sent to the skid control valve which
relieves the hydraulic pressure on the brake
An antiskid system is
an electrohydraulic system
Antiskid braking systems are generally armed by
a switch in the cockpit
A typical takeoff warning indication system, in addition to throttle setting, monitors the position of which of the following?
Elevators, speed brake, flaps and stabilizer trim
The primary purpose of a takeoff warning system is to alert the crew that a monitored flight control is not properly set prior to takeoff. The system is activated by
a thrust lever
An airspeed indicator measures the differential between
pitot and static air pressure
The angle of attack detector operates from differential between
pitot and static air pressure
- When an airplane is slowed below approximately 20 MPH, the anti skid system automatically deactivates to give the pilot full control of the brakes for maneuvering and parking
- An antiskid system consists basically of three components; wheel speed sensors, control box and control valves
Both No.1 and No.2 are true
In an antiskid system, wheel skid is detected by
an electrical sensor
Which of the following functions does a skid control system perform?
Normal skid control, fail safe protection, locked wheel skid control, touchdown protection
In the air with the antiskid armed, current cannot flow to the antiskid control box because landing gear
down and lock switch is open
At what point in the landing operation, does normal skid control perform its function?
When wheel rotation decelerations indicates an impending skid
- An antiskid is designed to apply enough force to operate just below the skid point
- A warning lamp lights in the cockpit when the antiskid is turned off or if there is a system failure
both No.1 and No.2 is true
When an airplane’s primary flight control surfaces are set for a particular phase of flight, such as landing or takeoff, the corresponding control-surface indicating system will show
trim position