The mass of the balloon determines how much inflation gas (Hydrogen or Helium) the balloon can hold. To carry a large payload, more gas must be used to achieve the desired buoyancy; however, the balloon will burst at a lower altitude. Alternatively, less gas could be used; however, the assent rate will be lower which results in a longer flight. The meteorological standard for assent rate is 5m/s.
| Balloon Weight (gr) |
50 |
100 |
200 |
300 |
350 |
500 |
600 |
1000 |
1200 |
| Diameter at Release (cm) |
86 |
88 |
122 |
127 |
130 |
135 |
148 |
161 |
185 |
| Payload (gr) |
100 |
100 |
250 |
250 |
250 |
250 |
250 |
250 |
1000 |
| Rate of Ascent (m/min) |
180 |
200 |
325 |
325 |
325 |
325 |
325 |
325 |
325 |
| Bursting Altitude (km) |
13 |
16 |
21 |
22 |
24 |
26 |
28 |
32 |
31 |
| Volume at Release (cu.m) |
0.2 |
0.25 |
0.83 |
0.97 |
1.03 |
1.22 |
1.5 |
2.01 |
2.99 |
| Weight of gas (gr @ 21°C,101 kPa) |
17 |
21 |
69 |
81 |
86 |
102 |
125 |
168 |
249 |
| Diameter at Burst (cm) |
120 |
185 |
290 |
370 |
400 |
485 |
575 |
740 |
820 |
| Neck Diameter (cm) |
3 |
4 |
6 |
6 |
6 |
6 |
6.5 |
8.5 |
8.5 |
| Neck Length (cm) |
9 |
12 |
13 |
14 |
14 |
18 |
20 |
20 |
20 |
| Free Lift (gr) |
105 |
300 |
520 |
590 |
600 |
675 |
890 |
1070 |
1190 |
| Nozzle Lift (gr) |
105 |
300 |
770 |
840 |
850 |
925 |
1140 |
1320 |
2190 |
| Gross Lift (gr) |
105 |
400 |
970 |
1140 |
1200 |
1425 |
1740 |
2320 |
3390 |
- Note that the above is based on Hydrogen gas
