Saturday, May 2, 2009, 10:27 AM
We spent the day doing some rewiring. Some of our actuators from the previous tests were unreliable. The propulsion team replaced those with pneumatic actuators. We had to rework our switch box to make more 24v line available.
Team created a test vessel to test out the concept of determining LOX load level. We utilized a steel cylinder capped at one end and strapped thermocouples along the outside. We utilized alcohol and dry ice (-110 degree) as our test solution. As we gradually filled up the test vessel we determined that we could detect the loading level by the differences in the temperatures at various points on the cylinder. This is the technique we will utilize on the LOX tank. The team began mounting the thermocouples onto the LOX tank.
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Saturday, April 25, 2009, 10:31 AM
The Computer team has gotten back together to review needed changes in support of the upcoming test firing (May 30/31). We need to redo some actuators, develop and test out a LOX load level indicator system, change our switch box to support more 24v lines, test out an updated igniter system, rework the ignition sequence to ensure we have combustion of the motor within a specified time window, and finally we need to perform end to end testing. | permalink
Sunday, April 20, 2008, 11:17 PM
Things are looking good for the next test firing in May. The Prop team fixed the leaking LOX valve. The computer team did some additional testing. Tweaked a few parameters for optimizations, but essentially it is ready to go. | permalink
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