25-01-2013, 09:22 AM
CHECKING PROCEDURE OF WEIGING AND C.G LOCATION OF PUSHPAK AIRCRAFT
CHECKING PROCEDURE.docx (Size: 13.52 KB / Downloads: 20)
AIM
To find out the centre of gravity of the pushpak aircraft
OCCASION
As prescribed by the aircraft maintenance manual
DOCUMENTS NEEDED
Aircraft servicing record form
Aircraft maintenance manual
TOOL SUPPORT EQUIPMENT
Aircraft jack and trestle
Leveling board
Plumb bob
Spirit level
Weighing machine
Measuring tape
PROCEDURE
Remove the excessive dirt, grease, moisture etc.. from the aircraft before weighing
Place the Weigh level inside the hanger
Place the aircraft on the weighing machine with main wheels and take the weight
Place the weighing machine at tail wheel and take the weight
To determine the C.G place the aircraft in level condition
Drop a plumb bob tangent to the leading edge at 15cms inboard
Datum line is marked 3” from front position
Trace the reference mark on the floor
Repeat operation on other wing
Stretch a tangent line between the two mass
Measure the distance between the main wheel centre and tail wheel axis
Measure the distance between the main wheel centre and tail wheel centre
Using data, it is possible to determine the aircraft C.G position
C.G of pushpak aircraft = D+(RxL)/W
RESULT
The empty weight of pushpak aircraft is measured and C.G is calculated as per procedure and tabulated. Thus the C.G of pushpak aircraft is calculated