SECTION 1
GENERAL
CESSNA
MODEL 182T NAV I I I
SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
(Continued)
WEIGHT AND BALANCE TERMINOLOGY
Reference
Datum
Reference Datum
is an imaginary vertical plane
from which all horizontal distances are measured
for balance purposes.
Station
Station
is a location along the airplane fuselage
given in terms of the distance from the reference
datum.
Arm
Arm
is the horizontal distance from the reference
datum to the center of gravity (C.G.) of an item.
Moment
Moment
is the product of the weight of an item
multiplied by its arm. (Moment divided by the
constant 1000 is used in this handbook to simplify
balance calculations by reducing the number of
digits.)
Center of
Gravity (C.G.)
Center of Gravity
is the point at which an
airplane, or equipment, would balance if
suspended. Its distance from the reference datum
is found by dividing the total moment by the total
weight of the airplane.
C.G. Arm
Center of Gravity Arm
is the arm obtained by
adding the airplane's individual moments and
dividing the sum by the total weight.
C.G. Limits
Center of Gravity Limits
are the extreme center
of gravity locations within which the airplane must
be operated at a given weight.
Standard
Empty Weight
Standard Empty Weight
is the weight of a
standard airplane, including unusable fuel, full
operating fluids and full engine oil.
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1-12
U.S.