Jonker Sailplanes JS-MD 3 - Page 96

JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 6-6
Figure 6.3-2 and Table 6.3-2 give the maximum mass and the moment
arms of the various variable loads for JS-3 with two separate non-
expendable fin tanks fitted from SN 080 and onwards:
Figure 6.3-2
#
Moment
Load point
Max Mass
Moment arm
kg
lbs
mm
inch
10.1
M
Tail2
Non-expendable tail
tank (bottom)
~5.0
~11.0
4495
177.0
10.2
M
Tail3
Non-expendable tail
tank (top)
~3.9
~8.6
4574
180.0
Table 6.3-2
NOTE: The moment arm of the main water ballast tanks is a
conservative approximation and changes from 200 mm
to 247 mm as the main tanks are filled.