Changes

The HONEY architecture is defined by a flight stack, comprised of stacked HONEY-compliant boards, with common data, power, and CAN buses, physically integrated through a series of four corner standoffs.  Flight boards in the flight stack are inter-connected by the standoffs mentioned above (Harwin R6104-02 standoffs). Boards are expected to be 0.062" thickness.  

The HONEY architecture is defined by a flight stack, comprised of stacked HONEY-compliant boards, with common data, power, and CAN buses, physically integrated through a series of four corner standoffs.  Flight boards in the flight stack are inter-connected by the standoffs mentioned above (Harwin R6104-02 standoffs). Boards are expected to be 0.062" thickness.  

The flight-stack is compromised of two primary divisions: ''Flight Critical Components (FCC)'' and "Flight Tertiary Components (FTC)". At time of writing, there are only two FCC's -- the Core Avionics and the Core BMS. All other boards, non-essential to flight operation, are considered FTC. Components are categorized and assessed as FCC or FTC upon design and implementation on a rolling basis. A flight-ready flight-stack must consist of at least one of each of the Flight Critical Components, and can include zero or any number of Tertiary Flight Components.

The flight-stack is compromised of two primary divisions: ''Flight Critical Components (FCC)'' and ''Flight Tertiary Components (FTC)''. At time of writing, there are only two FCC's -- the Core Avionics and the Core BMS. All other boards, non-essential to flight operation, are considered FTC. Components are categorized and assessed as FCC or FTC upon design and implementation on a rolling basis. A flight-ready flight-stack must consist of at least one of each of the Flight Critical Components, and can include zero or any number of Tertiary Flight Components.

As of writing, The FCC (Avionics & BMS) are specified by the HONEY spec as being the strictly top-most and strictly bottom-most boards in the flight stack, with all FTC in-between. This is the case for two reasons: Core Avionics required a clear view of the sky for proper Iridium & GPS reception, and therefore must be on the top of the stack. The BMS holds four 18650 Li-Ion cells on its bottom, and the standard inter-board spacing is insufficient to fit the battery pack. it is therefore allocated to the bottom of the stack, which is fastened to the payload container by longer standoffs to accommodate the battery pack size.  

As of writing, The FCC (Avionics & BMS) are specified by the HONEY spec as being the strictly top-most and strictly bottom-most boards in the flight stack, with all FTC in-between. This is the case for two reasons: Core Avionics required a clear view of the sky for proper Iridium & GPS reception, and therefore must be on the top of the stack. The BMS holds four 18650 Li-Ion cells on its bottom, and the standard inter-board spacing is insufficient to fit the battery pack. it is therefore allocated to the bottom of the stack, which is fastened to the payload container by longer standoffs to accommodate the battery pack size.