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psas / liquid-engine-test-stand

A small liquid rocket engine test stand.
GNU General Public License v2.0
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Identify LFE testing computer system control loop characteristics #6

Closed matthewhauer closed 4 years ago

matthewhauer commented 8 years ago

"Have we identified what the control loops in the system are and if they are safety critical or real time in nature?" -Gavin

"The system" is assumed to be LTC3, at least in the context of the LFE test stand testing rig.

"Real time" needs to be defined (due to 'real time systems' being a specific operating system term and type). Just 'immediately processed', or 'processed with timing guarantees'?

This ticket shall be accepted when the control loops in the liquid fuel engine testing system have been identified and characterized (at least a single-sentence description).

"The system" may need to be formally defined as well, for the sake of clarity.

matthewhauer commented 8 years ago

My understanding of the testing system is that it is not mission critical, that data drop-outs are allowable, and that the safety features will be 'built in' to the LTC3, rather than the test stand.

matthewhauer commented 8 years ago

Erin says this is a Kristin, Travis, and Matt Swagger* question, punctuating the "safety critical" and "real time" parts with "yes and yes".

Engine control and sequencing is a blind spot ~ generally known but not properly documented, analyzed, or turned into a safety process control sequence.

"Great question, Gavin"