Weather Ballon with Camera/GPS payload. 1x600g or 2x600g balloon for lift?

[Rbai63]

Hi I am starting a project and will be inflating a 900g Kaymount weather balloon with a payload that consists of a styrofoam box inside of that will be a SPOT personal gps tracker, Camera and a Flip HD camcorder. I purchased 2 of the 600g balloons. I will do this by filling one up and attatching 30-40Ft of string to one end and attaching it to the top of the other balloon. Would it be a good idea to inflate both for the 1 payload to get higher in the air and a faster accent rate, or is one 900g enough? I know some people use 1200g balloons. I am shooting for 100,000 Ft, after I receive all materials in the mail I will figure out how much helium I will need for the payload because I am not sure what the weight will be for it yet I am guessing <5lbs.

Thanks

I will try to get this launched over Thanksgiving break, will upload photos and videos.

 

[berkeman]

Hi I am starting a project and will be inflating a 900g Kaymount weather balloon with a payload that consists of a styrofoam box inside of that will be a SPOT personal gps tracker, Camera and a Flip HD camcorder. I purchased 2 of the 600g balloons. I will do this by filling one up and attatching 30-40Ft of string to one end and attaching it to the top of the other balloon. Would it be a good idea to inflate both for the 1 payload to get higher in the air and a faster accent rate, or is one 900g enough? I know some people use 1200g balloons. I am shooting for 100,000 Ft, after I receive all materials in the mail I will figure out how much helium I will need for the payload because I am not sure what the weight will be for it yet I am guessing <5lbs.

Thanks

I will try to get this launched over Thanksgiving break, will upload photos and videos.

Welcome to the PF.

Be sure to read this recent thread about high-altitude balloon experiments. It has some good advice about parachutes, low temperatures, and some legal issues. Also has a link to a cool video.

 

[chemisttree]

Welcome to the PF.

Be sure to read this recent thread about high-altitude balloon experiments. It has some good advice about parachutes, low temperatures, and some legal issues. Also has a link to a cool video.

Which recent thread was that, Berkeman?

 

[berkeman]

Which recent thread was that, Berkeman?

Oops, duh. I managed to leave out the link!

https://www.physicsforums.com/showthread.php?t=437146

.

 

[pmacias]

Hi there,

Thank you for sharing your project with me. It sounds like an exciting and ambitious endeavor. In terms of the balloon size, it ultimately depends on the weight of your payload and the desired altitude. A 900g balloon may be enough to reach 100,000 ft, but it may also depend on factors such as weather conditions and wind speed.

In general, using two balloons for one payload may provide more lift and a faster ascent rate, but it also adds complexity and potential for complications. It's important to carefully calculate the weight of your payload and the amount of helium needed to reach your desired altitude. I recommend consulting with experienced balloon experts or using online calculators to determine the best approach for your project.

Additionally, make sure to follow all safety protocols and regulations when launching a weather balloon. Good luck with your project and I look forward to seeing your photos and videos!