Table 1. Nozzle dimensions and characteristic times.

Nozzle No.

Description

Dimensions
(mm)

tchar for V=4920 cm3
(sec)*

tchar for V=29,100 cm3
(sec)*

QN1.1

Converging

Dt=1.63

6.85

40.5

QN1.2

Converging

Dt=3.19

1.79

10.6

QN1.3

Converging

Dt=4.79

0.79

4.69

QN1.4

Converging

Dt=6.36

0.45

2.66

QN2.1

Converging-Diverging

Dt=3.18
De=4.11

1.80

10.6

QN2.2

Converging-Diverging

Dt=4.78
De=6.17

0.80

4.71

* Assumes Ti=Ts=295 K and that the gas is air.