More Small Diameter Nozzle Testing

We finished off some more small diameter nozzle testing this week. With some interesting results.All Test were performed with a 1.5L bottle with 600ml of water

We will be able to use results to steadily increase the instantaneous thrust on the water rocket car.

Picture Diameter (mm) Pressure (psi) Time to empty bottle Area of Nozzle

Gardena 9mm Joiner

Gardena 9mm

9 140 0.433 63
9 80 0.533 63

8mm Nozzle Insert

8mm Nozzle Insert

8 140 0.533 50.2
8 80 0.734 50.2

7mm Nozzle Insert

7mm Nozzle Insert

7 140 0.467 38.4
7 80 1.000 38.4

6mm Nozzle Insert

6mm Nozzle Insert

6 140 1.000 28

5 x 2.5mm Nozzle Insert

5 x 2.5mm Nozzle Insert

5 x 2.5 (star) 140 1.066 24.55
6 80 1.243 28
5 x 2.5 (star) 80 1.400 24.55

These nozzle inserts may be of use to vertical water rockets as well

Here is a short video of the 5 star patter test at 140psi. All the others were a little boring so I wont bother posting them, the results are above

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