Walldiver7
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I am just starting down the road to my L3 cert. Below is something that I want to make sure that I am interpreting correctly.
2.4 The capability must exist to externally disarm all pyrotechnic devices on-board the rocket.
In this context, ‘disarm’ means the ability to physically break the connection between a
pyrotechnic system and its power source. Simply turning off the device controlling the
pyrotechnic(s) may not be sufficient.
My interpretation of this means that my L3 project will have SIX switches aboard. That would be two, to switch power to the flight computers, two to arm the drogue charges, and two more to arm the main charges. Have I read this correctly? Note the last sentence of 2.4 where it states "... may not be sufficient." Does this mean that this is up for discussion?
With the requirement of SIX switches, would I not be introducing more failure points?? When I sever the power to the flight computers (switches in the power line leading to the computers), there is no way for any of the charges to be energized..... So why would anyone purposely put in more switches that could fail?
(Moderator, Have I posted this in the correct area?) Yes, this is the correct area. Bob
2.4 The capability must exist to externally disarm all pyrotechnic devices on-board the rocket.
In this context, ‘disarm’ means the ability to physically break the connection between a
pyrotechnic system and its power source. Simply turning off the device controlling the
pyrotechnic(s) may not be sufficient.
My interpretation of this means that my L3 project will have SIX switches aboard. That would be two, to switch power to the flight computers, two to arm the drogue charges, and two more to arm the main charges. Have I read this correctly? Note the last sentence of 2.4 where it states "... may not be sufficient." Does this mean that this is up for discussion?
With the requirement of SIX switches, would I not be introducing more failure points?? When I sever the power to the flight computers (switches in the power line leading to the computers), there is no way for any of the charges to be energized..... So why would anyone purposely put in more switches that could fail?
(Moderator, Have I posted this in the correct area?) Yes, this is the correct area. Bob
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