Page Comparison

Airframe model - mechanical side

• Models getting put together, will be reviewed @ next week’s sync

  • To present to other sub-teams - gather feedback

  • This date may change based on progress as

Landing gear decisions - 2 different designs that will be assessed/evaluated for performance /weight differences

Sensor docs look good to get started on mounting

Base platform for mounting - grid of holes design for ease of placing things (m3 holes spaced __ mm apart?)

• different method of mounting, where the mount only requires a locating pin and is otherwise held on mechanically with a ledge (or similar)

  • easy to take out and put back

  • may be hard to integrate with a carbon fiber plate

  • additional weight?

Grid pattern at the beginning → when things are solid in place, if that occurs, we can re-cut a plate with the correct holes and cut off some 3D print mount weight

• does this cut out the mounts entirely?

• might still need 3D print interfaces between mount:plate

Objectives/compromises

1. adjustable pattern that requires specialized mounts to interface sensors:plate, means sensors can be moved

   1. 12 g is a 3D print case for ESCs

   2. Weight is lots

   3. Combining mounts?

2. easily-accessible sensors/electronics than can be removed with a pin/screw and slid out, mechanical options for holding it to the frame w/o bolts to unscrew

3. weight minimization, cutting out only the intended locations of where things should be

Seek common mounting patterns to optimize the sensor mounting hole base pattern

• see Daniel’s mounting pattern document

** CONOPS will be out in sept, this will change where things are mounted **

Emechtrical - electronics and motors updates

How many motors to buy? ~6?

Props?

board/electronics mounting notes

• No need to centre the PDB

  • easy location to tell if its on fire 🔥

• Center the flight controller and the IMU

What connectors to use? - Bullet between ESCS, motors?

• screwing wires into the PBD vs

ESC location depends on drone configuration:

• all motor wires run to centre of drone, where ESCs are located in the middle?

• mount ESCs under the motors?

  • bullet connectors go under the motors

  • potentially ripping pads off ESC if the bullet connector wires are too short

  • ESC being on a high damage location - also, 3D printed mounts are failure points already

CAD Mockups for different options. Decide whether or not ESC’s / high power stuff should be easily accessible.