Water rocket thrust measurement

This experiment looks at isolating the thrust produced as a result of the bottle stretching under pressure. When the nozzle is opened, this stretched bottle returns back to it's original shape pushing the water out. For a full experiment write up see:
http://www.AirCommandRockets.com/day106.htm

Category:

Science & Technology

Tags:

• water
• rocket
• thrust
• measurement

[norio79]

We watched your rocket videos during our lab in our college physics class

and everyone loved your rockets! We are designing a 2L water rocket powered glider.

Was just wondering what nozzle diameter you would recommed for 100 psi?

Thanks.

[gk123434534]

@norio79 Using a smaller nozzle gives you lower acceleration but a longer burn. A larger nozzle will give you high acceleration for a shorter amount of time. If you are making a glider I would suggest the smaller nozzle around 9-10mm. So that the wings don't rip off when you launch it.

[0MoTheG]

well, that result was to be expected but I suppose it is of academic relevance.