Self-propelling self-navigating vehicles a step closer

Saturday 24 April 2021 10am

Vehicles that can propel themselves along the water and self-navigate around any object in their path could soon be a reality thanks to new research from The Australian National University (ANU).

According to lead author, ANU physicist Associate Professor Hua Xia, the study builds on the "Magnus effect" - a force that acts on spinning objects.

"This force is widely used in sport, for example when tennis players use topspin or backspin to control the trajectory of the ball," Associate Professor Xia said.

"The idea of the using this force to propel vehicles along the surface of the water was initially implemented in rotor-ships - where large rotors are mounted on the vessel and driven by the engine, pushing the ship perpendicular to the wind and acting as a kind of sail.

"But we were interested in what happens when there's no wind."

The research team studied the motion of fast-spinning disks on the water's surface. They found when the disks reached a certain spin rate, they started self-propelling with acceleration.

"When the disk approaches a solid boundary, it stops accelerating and travels at a constant speed along the boundary of practically any shape, at a fixed distance from it," Associate Professor Xia said.

"This opens the door for numerous applications, including autonomous water vehicles, marine robotics and to monitor hazardous environmental conditions."

The research has been published in Science Advances.

Contact

Dr Hua Xia
E: hua.xia@anu.edu.au
T: (02)61253082

Related news stories

Using gravitational wave technology to improve autonomous vehicles

Forge Photonics, a start up company using gravitational wave detection technology has launched, setting its sights on the $A120 billion global market for autonomous vehicle navigation systems. The company aims to dramatically reduce the cost of navigation systems for a range of markets including self-driving...

Using entangled photons from a metamaterial for quantum imaging

Physicists have developed an ultra-compact quantum imager, based on an extremely sensitive high-resolution technique known as quantum ghost imaging. The new system uses a metasurface only 300 nanometres thick to generate entangled pairs of photons and makes use of their quantum properties to create...

Beating nature to make a night vision detector

Scientists have created new improved materials for detecting infrared light – the key to night vision. The new materials promise a more than tenfold improvement in efficiency over current night vision technology. The challenge in creating these materials - made of germanium with tin atoms embedded...

Random conversation leads to innovative dark matter detector design

A random conversation between physicists from different areas has led to a new ultrasensitive device to search for dark matter. The device is inspired by an instrument designed for mitigating noise in gravitational wave detectors, and will be sensitive to extremely light dark matter particles, around...