Flight manual DG-1000S
Issued: March 2002
6.5
6.8.4
Battery in the fin
Only the use of the factory supplied battery Z110 (mass 5.5 kg, 11.8 lbs.) is
permitted.
Warning:
Flying is only allowed with the battery in the fin as otherwise the
forward C.G. limit may be exceeded.
Instead of the battery a suitable weight of 5,5 kg may be used.
6.8.5
Waterballast in the wing tanks
The tanks have a capacity of 80 l (21,2 US gallons) per wing
The permitted amount of waterballast
is dependent on the empty weight and
of the load in the fuselage and can be determined from the diagram “
Ballast
chart"
section 6.8.10.
It is only allowed to fly with symmetric wing ballast!
6.8.6
Fin ballast tank
Water ballast in the fin tank should be used to compensate the forward move of
C.G. due to the water ballast in the wings.
The amount of ballast in the fin is dependent on the amount of water in the wing
tanks and to be determined from the following table.
waterballast in the
waterballast in the
wings
fin
wings
fin
kg
kg
lbs.
lbs.
20
0,6
40
1,2
40
1,3
80
2,7
60
2,1
120
4,2
80
2,9
160
5,9
100
3,8
200
7,5
120
4,6
240
9,2
140
5,4
280
10,8
160
6,2
320
12,4
/
/
350
13,5
Flight manual DG-1000S
Issued: March 2002
6.6
6.8.7
Ballast box in the fin
Compensation of the C.G. shift due to the rear pilot:
The ballast box can accommodate max. 4 weights of 2,4 kg mass (heavy weight)
and 2 weights of 1,2 kg mass (light weight), so the max. mass is 12 kg.
The number of weights can be determined by the following table:
Mass of rear pilot
k
g
lbs.
Number of trim
weights
Number of blinks of the lamp in the
front instrument panel see section
4.2.4
55
121
2 heavy + 1 light
5
65
143
3 heavy
6
75
165
3 heavy + 1 light
7
85
187
4 heavy
8
95
209
4 heavy + 1 light
9
105
231
4 heavy + 2 light
10
Warning:
When flying solo the ballast box must be emptied!
Otherwise you will fly with a dangerous C.G. position.
If the ballast box is filled up, the min. cockpit load in the front seat is raised by
35 kg (77 lbs.).
The resulting value (min. cockpit load in front seat from weighing without
b 35 kg) must be entered in the table on page 6.7 as value XX and also
on the placard at the indication lights for the fin tank on the front instrument
panel.
When using the trim weights make sure not to exceed the max. weight of 750kg
(1167 lbs.) Category „U” or 630kg (1653 lbs.) Category „A“ and Category „U“
with fixed undercarriage.
Trim-possibility for heavy pilots:
The ballast box may be used for this purpose too.
One trim weight of 1.2 kg raises the min. load in the front seat by 3.5 kg
(7.7 lbs.).
One trim weight of 2.4 kg raises the min. load in the front seat by 7 kg
(15.4 lbs.).
Example:
Min. cockpit load of the glider: 70 kg
permissible amount of trim weights
Mass of the front pilot:
84 kg
2 x 2.4 kg
Mass of the rear pilot:
65 kg
3 x 2.4 kg or 2 x 2,4 kg and 2 x 1,2 kg
Total amount of trim ballast:
12 kg
This means that the ballast box can be filled completely for this example.
Higher pilot masses can’t be compensated.
