Dual Motor Thrust Vector Control Mount v2

Overview

Specs:

Actuation Range: +-5 degrees

Motor Size: <24mm

Airframe Size: >66mm

Servos: mks HV393i

Measured actuation speed (2 motor load): 0.05s/5 degrees

This part was designed to be 3d-printed, and you can access the onshape CAD files here.

Characterized for all stages of flight

In order to have reliable simulations, I characterized the TVC mount for the ascent and descent phases of flight using MATLAB and Simulink. After generating a transfer function for the TVC mounts response, I can reliably model any mechanical slop caused by the inertia of the dual motor design in the simulation and tune my flight control gains to compensate.

Engineered for Speed

Simulations showed that a higher speed TVC mount resulted in better control through complex flight trajectories. To accomplish this, the mount uses the fastest hobby servos money can buy: (mks HV93i) and tight tolerances to reduce slop.