Flight Manual for Gas Balloons of Type NL-STU
Issue 2.0
July 25, 2016
Page 5-3
5.3.3 Matrix of theoretically possible loads
Envelope
size
Max.
take-off
mass
acc. to ISA*
Standard
basket
Overall weight**
incl. load ring,
ropes, lines,
etc.
Minimum
ballast
Theoretically
possible
load***
280 m³
319 kg
Basket I
102 kg
30 kg
187 kg
380 m³
433 kg
Basket II
119 kg
45 kg
269 kg
510 m³
581 kg
Basket III
143 kg
45 kg
393 kg
640 m³
729 kg
Basket IV
165 kg
60 kg
504 kg
840 m³
957 kg
Basket V
186 kg
60 kg
711 kg
1000 m³
1140 kg
Basket VI
208 kg
75 kg
857 kg
1000 m³
1140 kg
Lightweight
basket
178 kg *****
75 kg
887 kg
1000 m³
1140 kg
Fabric walled
basket
155 kg *****
75 kg
591 kg ****
*
15 °C air temperature / 1013.25 hPa / 1.225 kg/m³ / Take-off at mean sea level
**
Mean overall weight – the overall weight may vary according to the design, e.g. due to
advertising on the envelope
***
Instruments, trail rope, equipment, flight ballast and occupants must be included in the calcula-
tions
****
The theoretically possible load for the fabric walled basket exists of 2 occupants (2x77 kg),
equipment (30 kg) and the minimum of ballast (75 kg). There is the possibility to storage at most
330 kg ballast in the basket. The remaining ballast has to be attached outboard
*****
Trail rope and crew equipment is not included