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Depressurization is a loss of pressure in the motor due to a leak or hardware defect, which can significantly decrease the impulse of our motor. Such defects may not be easily noticeable, which is why it's important to analyze post-firing photos for any signs of breakage. This could be caused from many factors, from sliced O-rings, failed RTV adhesion, hardware defects, etc. but is usually identified by burned grease around sealed areas. Typically any anomalies in the hardware that could cause leaks will be found with a hydrostatic test.
Pressure Loss
Now, we will briefly talk about data acquisition. This system should be able to sample transducer as quickly as possible, at least 100 hz. Since transducers typically output a very small signal, it has to be amplified and a conversion function from voltage to force or pressure must be found. Also, the transducers should be pre-calibrated over the full range that they will see during the firing.
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