D. Avionics Description
Primary avionics will be an Olsen FCP-M2 and a redundant Altacc as the secondary system, since they have been proven in many flights. Each altimeter will have a separate power source and separate electric matches as well as separate black-powder charges.

These units will be located in the center section. The Olsen FCP-M2 and the Altacc are armed from the outside (see wiring diagram) so no additional wiring is needed. 

Since I am using redundant system, I don't want both charges to go off simultaneously. While the airframe should be strong enough to withstand this, it is clearly a good thing to avoid. One of ejection charges will go off at apogee and the other will utilize a 1.75 second delay. The main chutes will be set to fire at 800 ft agl and the backup system at 500 ft agl. 

Safety: Again, failure deploy the recovery system would be very dangerous on a rocket this large and heavy. 100% redundant altimeters should minimize this risk.
 

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