First Flight Test

Yesterday we had our first flight test with our ambassador Lincoln.
To launch a rocket we need a bike pump, 1.5 L bottle, Water, Safety glasses, launcher, pressure gage, and a measuring cup.

We walked out to the field and set the water bottle launcher up, measured the water level, filled the bottle with water and connected the bottle to the launcher we all got told to stand on the concrete we all counted down from 10..9..8...7... we got to 1 and waited for the rocket to launch it didn't launch. Lincoln pushed a button and the rocket launched off.
The second run we put 30 psi and 200 ml it launched but it was the lowest height.
The third run we put 45 psi and 250 ml it launched a bit late.
The last run we put 45 psi and 350 ml it launched and it was the highest.
we grabbed all of our stuff and walked back into class and left.