Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (08)
Page 5 of 15
CHAPTER 08 – WEIGHT AND BALANCE (08-00-00)
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COPYRIGHT

2007 BY DART AEROSPACE LTD.

THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY OTHER
PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
0
Date: 07.05.31
8.4.1
This distance from F.S. 0.0 to a line
through centers of forward jack pads is called the
forward arm. The distance from F.S. 0.0 to a line
through the center of aft jack pads is called the aft
arm. The forward arm is 61.69 in. (156.69 cm)
and the aft arm is 211.58 in. (537.41 cm) (Figure
8-2).
8.4.2
Multiply total net weight of forward
scales by forward arm. The product is called
forward moment and is expressed in inch pounds
(in-Lbs)
8.4.3
Multiply total net weight of aft scales by
aft arm. This is the aft moment in in-Lbs
8.4.4
Add forward and aft moments and divide
by total “As Weighed” weight. The quotient is
helicopter “As Weighed” CG in inches aft of F.S.
0.0.
NOTE
The above procedure may be stated in equation
form as follows:
As Weighed
CG = (Net Wt. Fwd Scales) (61.69) + (Net Wt. Aft Scales) (211.58)
Total Net (As Weighed) Weight
Figure 8-2. Weight and Balance