Water Rocket Labs

090920-001 Measuring bottle dimensions and volume

Date	20th September 2009
Tested by	GK
Location	Sydney, Australia
Test Procedure	Measuring Pressure Vessel Volume Measuring Pressure Vessel Dimensions
References	N/A

The standard procedures were used to measure the dimensions and volume of 8 common bottles.

The following results were obtained from the experiment:

Bottle	volume increase @60psi ( mL )	volume increase @120psi ( mL )	volume increase after return to 0psi ( mL )	height increase @60psi ( mm )	height increase @120psi ( mm )	Circumference increase @60psi ( mm )	Circumference increase @120psi ( mm )
2L bottle with ridge PC_2000_001	48	157	24	2	6	2.5	8
2L Coke PC_2000_003	59	192	34	2	7	2.5	8
2.25L with ridge PC_2250_001	55	172	29	2	8.5	2.5	8.5
2L no ridge PC_2000_002	58	170	27	1.5	4.5	2.5	8
2L Conical PC_2000_004	50	128	11	2	6	2.5	7
1.25L Standard PC_1250_001	25	70	5	1	2.5	2.5	5
1.25L spiral neck PC_1250_002	24	65	6	2	3.5	2	5
600ml Coke PC_0600_001	15	31	0	0.5	2.5	1	2.5

Most of the bottles responded in a similar manner to being pressurised. At 120psi, 2L bottles increased by about 8mm in circumference, lengthened by ~7mm and volume increased by about 170mL. At the same pressure 1.25L bottles increased their circumference by about 5mm, lengthened by 3mm and increased by about 70mL in volume.
After being pressurised to 120psi the bottles typically did not return to their original volume. The values given are the difference before and after pressurisation.