Problem Pyro BAT Voltage Check

[Lince]

Hey folks:tiphat:

I'm using NASSP v7.0 and I have a problem with the Inseretion checklist, precisely with the D-C Voltage-Amperage Check. When I check the Pyro BAT voltages I see 0 Volt instead of the nominal values.

Thanks in advance

P.S. the scenario is "Apollo 8 Virtual AGC LVDC++ MCC - Launch"

 

[indy91]

That's an interesting one actually. You don't see a pyro voltage because the circuit breakers for it are open at that time in the checklist. So why does the checklist not close them? That's an oversight in the actual Apollo 8 launch checklist. There are handwritten notes in the flown LMP Checklist for a DC Voltage-Amperage Check that says:

If Pyro Bat Chk desired:
-Pyro A&B Seq A&B cb (both) - close [Panel 250]
-[Check Pyro A&B voltages]
-Pyro A&B Seq A&B cb (both) - open[Panel 250]

And that's probably all you have to do to see the pyro voltages.

 

[Lince]

That's an interesting one actually. You don't see a pyro voltage because the circuit breakers for it are open at that time in the checklist. So why does the checklist not close them? That's an oversight in the actual Apollo 8 launch checklist. There are handwritten notes in the flown LMP Checklist for a DC Voltage-Amperage Check that says:



And that's probably all you have to do to see the pyro voltages.

Thank you indy91, it works I will double check these circuit for entry interface :lol: