Static Test 3--

The third test of the hybrid PVC prototype was fairly successful except for an endurance problem with the nozzle. For this engine, the injector orifice was reduced and the NOX tank was enlarged.

Click on image to enlarge

Total Impulse 770 Newtons / second
Burn time 3.8 seconds
Max. Newtons 267 N
   
Fuel burned 0.07 Kg.
Nitrous Oxide 0.460 Kg.
Propellant weight total 0.530 Kg.
Oxidizer ratio 6.5
 ISP 148 sec
Ambient temperature 68 F
Test date 6/6/03


And here is the video:

hybrid3.mov (530 KB)

hybrid3.mpg (110 KB)

hybrid_3.mpg (1,679 KB)

Frame by frame analysis

Frame1

Frame2

Frame3

Frame4

Frame5

| Frame6
  • Frame1 - Igniter start
  • Frame2 - Igniter hot flame, engine warm up, valve opener
  • Frame3 - NOX starts to pour out the nozzle and the combustion flame follows just behind
  • Frame4 - Engine full power
  • Frame5 - Nozzle failure, flame start to show on the sides of the nozzle body
  • Frame6 - End combustion, juncture of nozzle - combustion chamber starting to show born out.

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