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Weight and balance
Introduction
This chapter provides information on aircraft’s weight and balance, which is essential for safe flying
activity.
Weighing procedure
How to weigh the aircraft and later determine the CG correctly:
Make sure all listed aircraft parts and appliances are installed and in position.
Remove all other objects (e.g. tools, mops ...).
Empty fuel tanks except for the unusable fuel.
Fill up engine oil to the top marking.
Retract flaps and spoilers, leave control surfaces centred.
Level the aircraft inside a closed space.
To do this, use the provided airfoil template at lower side of the wing close to the wing root
and make sure its straight edge is level (horizontal).
Once leveled, read the scale readings and subtract eventual tare weight.
Now measure and record all readings and fill out the bottom schematic.
Datum is wing’s leading edge at wing root. Calculate the lever arm of CG using this formula:
Lever arm of CG (X) = ((G
1
/ G) x c) + a
Weighing form
Weighing point and symbol
Scale reading
Tare
Nett
right main wheel (G
D
)
left main wheel (G
L
)
nose wheel (G
2
)
total (G = G
D
+ G
L
+G
2
)
Summary of Contents for Virus 912
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Page 11: ...11 VIRUS www pipistrel si REV 0 Aircraft projections General...
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Page 63: ...63 VIRUS www pipistrel si REV 0 Aircraft and systems on board...
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Page 91: ...91 VIRUS www pipistrel si REV 0 Appendix This page is intentionally left blank...
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