1 cubic foot of helium lifts 28g
1 pound = 454g
Ascent rate of 300ft/min for each pound of free lift OR Ascent rate of 300ft/min for every 16.2 cubic feet of free lift helium
Equipment Weight:
Energizer Energi-to-Go: 57g
Canon Powershot A1100IS w/Lithium AA’s and 4GB SD: 185g
Micro DV Recorder: 20g
Motorola i290 Phone: 88g
36″ Nylon Parachute: 51g
150g Balloon: 150g
11″ Antenna w/Pigtail: unknown
Styrofoam Box: unknown
Tape & Recovery Sign: unknown
Current Payload Weight: 551g
Current Minimum Helium Requirement w/300ft/min Ascent Rate: 35.88 cubic feet