Balloon

[stilist]

http://www.high-altitude-balloon.com/Radiosonde-balloon-payload-balloon

Some numbers for weight / payload / burst altitude (ceiling).

Model	Net weight (g)	Balloon neck length (in)	Horizontal diameter (in)	Maximum lift (g)	Burst altitude (ft)	Rising speed (ft/s)
50g	50~60	3.15±0.34	11.42 ~13.78	150	39370	10.94
100g	100~118	3.54±0.34	18.90 ~21.26	160	49200	10.94
200g	200~230	4.72±0.79	22.44 ~25.98	760	55760	10.94
300g	300~330	4.72±0.79	30.31 ~35.04	810	59040	>18.59
350g	350~390	4.72±0.79	32.68~37.4	825	65600	>18.59
400g	400~440	4.72±0.79	35.43~39.76	875	68880	>18.59
500g	500~550	4.72±0.79	42.52~47.64	905	82000	>18.59
600g	600~630	4.72±0.79	47.64~55.12	1120	85280	>18.59
750g	750~800	5.12±0.79	53.94~63.78	1220	91840	>18.59
800g	800~850	5.12±0.79	55.12~63.78	1220	91840	>18.59
1000g	1000~1050	5.12±0.79	60.24~67.72	1310	101680	>18.59
1200g	1200~1300	5.51±0.79	67.72~75.2	2240	104960	>18.59
1600g	1600~1700	5.51±0.79	74.8~82.68	2400	118080	>18.59
2000g	2000~2100	5.12±0.79	76.77~86.61	2500	124640	>18.59

[stilist]

http://tools.highaltitudescience.com/

Does calculations similar to the above table.

[stilist]

Note: 100000 ft is 30480 meters.

And the search query to use is ‘high altitude balloon burst altitude’.

[stilist]

Another calculator: http://habhub.org/calc/; indicates how far into the flight the balloon will burst. Can also change the gas in the balloon.

[stilist]

Also need to limit the descent rate, to avoid issues with GPS cutout (https://en.wikipedia.org/wiki/CoCom#Legacy).