25-01-2013, 09:24 AM
CHECKING UP OF AILERON DEFLECTION AND ELEVATOR DEFLECTION
CHECKING UP OF AILERON.docx (Size: 14.06 KB / Downloads: 21)
AIM
To ensure the deflection angle of aileron and elevator
THEORY
Aileron: the movement of aircraft about lateral axis is called rolling or bank. This moment ailerons are linked together by control cable. So this one aileron is down when other is up that is they function in different directions.
Elevator: The movement of aircraft about longitudinal axis is called pitching. Elevator are used to control this pitching movement. Elevators are linked together by actual cable so that both elevator are down that is move in same direction
OCCASION
Major servicing of aircraft
Aircraft flies when one wing low
As and when required by DGCA
REQUIREMENTS
Man hours=3
Man power=3+1
Documents= Aircraft maintenance manual
TOOLS AND EQUIPMENTS
Tripod
Aircraft ladder
Longitudinal and lateral leveling board
Spirit level
Plumb bob
Measuring tape
PRECAUTIONS FOR AILERONS
Observe all the safety precautions for leveling]
Accuracy of spirit level has to be checked
PROCEDURE
Place the aircraft over the level board
Locate the C.G point and place the leveling board and spirit level on it
Locate the C.G point and place the leveling board and spirit level over it
Level the aircraft as per the concerned maintenance manual
Measure the chord length of aileron
Measure the distance travelled by aileron in upward direction from neutral position to port side
Take the distance from upper wing
Measure the downward distance travelled by aileron form neutral position
Find deflection angle from measured distance
Check angle of deflection within specified limit
FOR ELEVATORS
Measure the distance travelled in upward direction from neutral position to deflected position
Take distance from upper hinge
Measure distance travelled by elevator from neutral position
Find the deflection angle from neutral position
Check the angle of deflection is within the specified limit
RESULT
Thus the aileron and elevator deflection is verified and checked