vietnam water rocket
Posted: Wed Oct 21, 2015 2:51 am
this is my rocket at a water rocket competision which is only for high school student . and we won 1st place .
flyduration is 65s , we don know how high is it , i think it about 100 meters . . i hope you like it
flyduration is 65s , we don know how high is it , i think it about 100 meters . . i hope you like it