# Differences

This shows you the differences between two versions of the page.

 balloontrayectory [2016/03/29 22:43]sam balloontrayectory [2016/03/31 11:48] (current)ana 2016/03/31 11:48 ana 2016/03/29 22:43 sam 2016/03/26 20:09 ana 2016/03/26 20:09 ana 2016/03/26 20:08 ana 2016/03/26 20:08 ana 2016/03/26 20:07 ana 2016/03/26 20:06 ana 2016/03/26 20:04 ana 2016/03/26 20:03 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:32 ana 2016/03/26 19:32 ana 2016/03/26 19:32 ana 2016/03/26 19:31 ana 2016/03/26 19:29 ana 2016/03/26 18:51 ana created 2016/03/31 11:48 ana 2016/03/29 22:43 sam 2016/03/26 20:09 ana 2016/03/26 20:09 ana 2016/03/26 20:08 ana 2016/03/26 20:08 ana 2016/03/26 20:07 ana 2016/03/26 20:06 ana 2016/03/26 20:04 ana 2016/03/26 20:03 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:33 ana 2016/03/26 19:32 ana 2016/03/26 19:32 ana 2016/03/26 19:32 ana 2016/03/26 19:31 ana 2016/03/26 19:29 ana 2016/03/26 18:51 ana created Line 23: Line 23: To calculate the amount of Helium that the balloon needs to carry our payload, first we are gonna use the //Balloon Performance Calculator//​ using as variable the positive lift that we are gonna add, in order to obey the constraints. To calculate the amount of Helium that the balloon needs to carry our payload, first we are gonna use the //Balloon Performance Calculator//​ using as variable the positive lift that we are gonna add, in order to obey the constraints. - For a payload of 2300 grams, keeping an ascent rate of $4.562 m/s$ with an estimated burst altitude of $29400 \pm 1000 m$ and an ascent time of $107.4 \pm 5 minutes$, we will need a positive lift of $1100 grams$. + For a payload of 1800 grams, keeping an ascent rate of $4.5578 m/s$ with an estimated burst altitude of $30723 \pm 1000 m$ and an ascent time of $110 \pm 5 minutes$, we will need a positive lift of $1000 grams$. - This means we will have to fill the balloon with $4682,​8077 ​\pm 250 liters$ of $Helium$. + This means we will have to fill the balloon with $3845 \pm 250 liters$ of $Helium$. The estimations are an average of the the results provided by the //Balloon Performance Calculator//​ and the //Balloon Burst Calculator//​. The estimations are an average of the the results provided by the //Balloon Performance Calculator//​ and the //Balloon Burst Calculator//​.