448
Ravikiran et al.
Fig. 5 Meshed geometry
Fig. 6 Pressure, temperature and velocity contours inside nozzle
3 Results and Discussion
3.1 Nozzle Analysis
The nozzle model was created in ANSYS and analyzed for pressure, temperature
and velocity variations as discussed in Sect. 2.3. Figure 5 shows the meshed view of
the nozzle model. The results of post-processing are shown in Fig. 6.
As seen in Fig. 6 the pressure and temperature were maximum at the inlet of the
nozzle and gradually decreased towards the outlet. On the contrary, the velocity was
minimum at the inlet and increased towards the outlet. The velocity was found to be
1 M at the throat and 2.86 M at the outlet of the nozzle corresponding to the choked
flow condition. The final fabricated model of the nozzle along with the motor casing
weighed 225 g.
3.2 Thrust Force and Altitude
The thrust force of the motor was measured after mounting it inside a paint box and
keeping it upside down in a weighing balance. The thrust force due to fuel ignition
Ravikiran et al.
Fig. 5 Meshed geometry
Fig. 6 Pressure, temperature and velocity contours inside nozzle
3 Results and Discussion
3.1 Nozzle Analysis
The nozzle model was created in ANSYS and analyzed for pressure, temperature
and velocity variations as discussed in Sect. 2.3. Figure 5 shows the meshed view of
the nozzle model. The results of post-processing are shown in Fig. 6.
As seen in Fig. 6 the pressure and temperature were maximum at the inlet of the
nozzle and gradually decreased towards the outlet. On the contrary, the velocity was
minimum at the inlet and increased towards the outlet. The velocity was found to be
1 M at the throat and 2.86 M at the outlet of the nozzle corresponding to the choked
flow condition. The final fabricated model of the nozzle along with the motor casing
weighed 225 g.
3.2 Thrust Force and Altitude
The thrust force of the motor was measured after mounting it inside a paint box and
keeping it upside down in a weighing balance. The thrust force due to fuel ignition