Digital Twin Technologies: Simulations for the Final Frontier
Dr. Lewis Carter from Raytracer explores the intersection of video games and space technology, explaining how digital twins and immersive VR are revolutionizing astronaut training and mission control. Raytracer bridges the gap between hardware and software engineering to simulate complex scenarios before they ever occur in the real world.
[00:00:10] Raytracer is a small, Brisbane-based team of hardware and software engineers. They create technologies that allow humans to work effectively in remote environments like space. This includes everything from remote control systems for robotic arms to high-fidelity simulations used for training.
What is a Digital Twin?
[00:01:33] A digital twin is a virtual reproduction of a piece of hardware or an environment within a computer. Before spending millions of dollars to send a satellite into space, engineers use digital twins to simulate how that hardware will react to different weather conditions, orbits, or mechanical failures.
[00:02:18] Digital twins provide a “safe space to fail.” For example, in a virtual chemistry lab, if you combine the wrong chemicals and they blow up, you’ve learned a vital lesson without any real-world danger or cost. This iterative design process allows teams to find flaws—like a robotic arm being in the wrong spot—long before a physical prototype is built.
Titan Lake: Training in a Virtual Ocean
[00:04:06] Traditional astronaut training often uses “neutral buoyancy labs”—massive, expensive pools containing replicas of the ISS. Raytracer’s Titan Lake project brings this into the virtual world. By combining scuba gear with a custom VR headset and tracking system, astronauts can “jump into the pool” and see a high-fidelity 3D space station around them, allowing them to practice repairs in simulated zero gravity at a fraction of the cost.
The Link to Video Games
[00:07:44] It might surprise you to learn that the software used to control a lunar rover is often built on the same engines that power your favorite video games. Raytracer uses Unity and Unreal Engine to create their simulations. Many members of the team have backgrounds in game design, 3D animation, and games programming.
[00:10:49] The primary difference between a game and a space simulation is the consequences. If a mobile game crashes, the user is disappointed; if the software talking to a satellite in space breaks, it’s a mission-critical disaster. This requires a level of testing rigor far beyond standard software development.
Advice for Students: Start Playing
[00:11:00] You don’t need a PhD to get started in this field. Dr. Carter recommends that students interested in digital twins download Unity or Unreal Engine—both of which have free versions—and explore the thousands of free tutorials available online. “Don’t limit yourself,” he advises. Even if you aren’t the best at math or English now, skills develop over time if you follow what you actually enjoy.
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