Operation of Systems Flashcards
What are the four main control surfaces?
Elevators, Ailerons, Rudder and Trim Tabs.
What does the rudder do?
Controls the movement of the plane about its vertical axis. The motion is called yaw.
What do ailerons do?
They control the airplane about its longitudinal axis. This motion is called roll.
What do elevators do?
Control the movement of the plane about its lateral axis. This motion is called pitch.
What do the trim tabs do?
They are small adjustable hinges on the aileron, rudder or elevator control surfaces. They make it easier for the pilot to release manual pressure on primary controls.
How are various flight controls operated?
They are manually operated through use of a cable or rod system. The yoke controls the ailerons and elevator while the foot pedals control the rudder.
What are flaps?
They are moveable panels on the trailing edge of the wing. They are used to increase both lift and drag. This permits slower airspeed and a steeper angle of descent during a landing approach. In some cases, they also are used to shorten the takeoff distance.
Describe the landing gear system.
Consists of a tricycle-type system utilizing two main wheels and a steerable nose wheel.
Describe the braking system.
Hydraulically actuated disc-type brakes are utilized on each main gear wheel. A hydraulic line connects each brake to a master cylinder located on each pilot’s rudder pedals.
What four strokes must occur in each cylinder of a four stroke engine?
Intake, Compression, Power and Exhaust.
What does the carburetor do?
Vaporizes liquid fuel into small particles and then mixes it with air. Creates the air/fuel mixture.
How does the carburetor heat system work?
A carb heat valve, controlled by the pilot, allows unfiltered, heated air from a shroud located around an exhaust muffler to be directed to the induction air manifold prior to the carburetor.
What change occurs to the fuel/air mixture when applying carb heat?
The introduction of heated air into the carburetor results in a richer mixture because warm air is less dense resulting in less air for the same amount of fuel. Use of carb heat can cause a decrease in engine power of up to 15 percent.
What does the throttle do?
Manually controls the amount of fuel/air entering the cylinders.
What does the mixture control do?
It regulates the fuel-to-air ratio. The purpose is to prevent mixture from becoming too rich at high altitudes, due to decreasing air density.
