24 Nov - 8 Dec 2016


An exhibition by Monash Engineering


Caged Octocopter


How can we ensure the safety of public infrastructure such as bridges more easily?

Bridge inspections must be carried out at least twice a year to ensure the structural integrity of the bridge remains uncompromised. This is often an expensive, time consuming and potentially dangerous task.


A dynamic caged octocopter. Able to be operated remotely with minimal training, the octocopter will be able to roll up walls and other surfaces and is mounted with a camera to transmit images.

The octocopter was built in three subsections; the outer cage, the carbon fibre rings and the frame of the quad. The outer cage was made of acrylic which was laser cut and the pieces epoxied together. The carbon fibre in the rings was CNC routed at XM2, then connected with a combination of laser cut plywood and carbon fibre covers held together with nylon bolts and epoxy. To increase the structural integrity of the rings, struts were added made of 3D printed connectors and carbon fibre rods. The frame of the quadcopter provided was modified to replace two of the arms with a carbon fibre tube that runs thru the body and connects to the carbon fibre rings with a circular carbon fibre tube protruding from the square tube. The rings and the cage act as a gimbal system that allows 3-axis rotation, allowing the cage to roll with the body of the octocopter remaining level. Each subsection is connected with ball bearings allowing the section to move in a single axis, with each of the three connections combining to allow the three axis of movement.

Team members

  • David Commis (DD with Science)
  • Bridget Anderson (DD with Science) – CAPTAIN
  • Sam Lock
  • Alwin Wang