Jonker Sailplanes JS-MD 3 - Page 103

JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 6-13
Fuselage tank (optional)
A fuselage tank may be installed instead of the fuel tanks of the Sustainer
system. Filling the fuselage tanks moves the CG aft. The required
minimum cockpit weight is therefore higher when water is added to the
fuselage tanks.
The table below indicates the maximum weight and moment arm of the
fuselage tank.
Load point
Mass
Moment arm
kg
lbs
mm
inch
M
BT
Fuselage ballast tank
35.0
77
894
35.2
Table 6.4-3
Refer to the minimum cockpit weights placard (or Placard Booklet) or
Table 6.2-1 for the difference in minimum cockpit load if fuselage tanks
are filled. Figure 2.14-2 shows an example of this placard.