Table 3: Operational requirement of HFG facility.
Test Section Parameters |
Vacuum Tank and Pump |
||
Working medium |
Nitrogen |
Tank volume |
80 m3 |
Max. Velocity |
2.5 km/s |
Pumping rate at 1mTorr |
10,00 CFM |
|
|
Initial back pressure |
10 mTorr |
Flow rate |
0.2 g/s |
|
|
Back pressure |
10 mTorr |
Final back pressure |
40 mTorr |
Max. back pressure |
40 mTorr |
Lowest vacuum pressure |
1 mTorr |
|
|
Average temperature |
300 K |
Max. run time |
28 sec |
|
|
Nozzle Configuration |
Diagnostic Tools |
||
Material |
Tungsten |
Flow velocity |
Pitot tube or LDV |
Nozzle throat diameter |
1 mm |
Pressure |
Pressure gage |
Nozzle exit diameter |
100 mm |
Vacuum |
Vacuum gage |
Nozzle length |
350 mm |
Temperature |
Thermocouples or TIS |
Expansion conical angle |
16 degree |
Flow rate |
Flow controller |
Mach envelop diameter |
700 mm |
|
|
Thermal Chamber Parameters |
Others required |
||
Chamber material |
Tungsten or HfC |
Gas feeder & controller |
0.2 g/s at 300K |
Max. Gas temperature |
3000 K |
|
|
Max. chamber pressure |
3.5 atm |
Thermal Imaging system (TIS) |
300 K, continuous monitoring |
Max. flow rate |
0.3 g/s |
Arc Lamp: 70-600 Amp |
250 V, current monitoring and controlled with TIS reading |