Mission Planner Recognition of Motor Positioning and Frame Type

I’m currently working on a capstone project focused on designing and developing a UAV with Vertical Takeoff and Landing capabilities. Our team plans to create our own aerostructures and airframe. Presently, we’ve configured it as a tri-copter with a rear motor for yaw control and two front motors connected in parallel. We aim to implement a tilt-wing design where all front motors tilt, while the rear motor exclusively controls yaw.

My question pertains to how the Pixhawk autopilot system identifies motor positioning and their relative locations during flight adjustments. Do we need to define a new frame class to inform Mission Planner about motor positions and their angles on the aircraft? Are there specific parameters in Mission Planner that need adjustment to account for this, or does the system automatically recognize and adapt to these motor configurations?

Any help would be greatly appreciated

No need to change position parameters for an already existing frame, like the one you described. But you do need to follow the instructions to tune the PIDs and notch filters.
Do not skip parameterization steps.

Even if the the motors at the front are at a different height than that of the motor in the rear? Also the motors are not equidistant from each other. Does this change anything?

Even if the the motors at the front are at a different height than that of the motor in the rear? Also the motors are not equidistant from each other. Does this change anything?

How big is the height difference?
Equidistance is not that important as long as the two front motors are symetricaly placed.

Post a photo

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This is a mock up of something similar to what we are aiming for

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The height difference is too small. Ignore it