The mechanical team is building an updated assembly for FINCH. This updated model includes some missing components from the March model and any updates made to the parts.

This discussion is to go through the finch assembly from top to bottom to hash out any issues with the assembly and get input from other teams.

The current state of the updated finch assembly is shown below (solar panels are hidden). Obviously, this is not completed

The top subassembly of Finch includes the +Z Panel and the electrical stack-up. I would say that the assembly and mechanical design for this section is 85% complete. The missing 15% is potential spacing changes, potential volume constraints, and a change to the battery pack if there is a catastrophic failure

The Stackup is built with M3 threaded rods and each component is split with a bracket or a threaded standoff. The order of the components in the stack are:

From top to bottom. ADCS Module > RX/TX Module > RF Module > 3 PCBA > Battery Pack

• Spacing Between boards is 8mm,
• 2.5mm between the solar panels and the boards
• Slight Battery pack change from the march model, the battery pack is flipped and acts as a support bracket for the stack (reduces z height)
• 120.98mm in the z-axis from the bottom of the +Z Panel. There is 338.5mm between the two Z panel

217.52 -42

FINCH Bottom Subassembly

The bottom subassembly for FINCH includes the rails, -Z Panel, Deployment Switches Startracker, and payload. I honestly have no clue what is going on with this subassembly