Sydney students simulate flight of NASA鈥檚 Ingenuity
The School of Aerospace, Mechanical and Mechatronic students with Associate Professor Ben Thornber. Credit: University of Sydney聽
Last week, the NASA Ingenuity Mars helicopter made its maiden voyage, successfully taking聽to the Martian skies聽and then safetly returning to the planet's surface聽moments later.
It was the first time a machine has been flown on another planet. Scientists and engineers say it could be a game-changer for space exploration.
Prior to the flight, a group of School of Aerospace, Mechanical and Mechatronic Engineering students, led by Associate Professor Ben Thornber, completed aerodynamic simulations of the 鈥淢ars-copter鈥檚鈥� first flight using a process known as computational fluid dynamics, which is known in the industry as simply "CFD".
CFD involves computational and numerical analysis and it allows engineers and scientists to map how liquids and gasses flow. In this instance, CFD is one tool that can help researchers understand the interaction between Ingenuity's rotors and the Martian atmosphere.
The students hope their models will be used by NASA to better understand聽the complex flow fields聽generated by the aircraft's coaxial rotor configuration 鈥� a configuration where rotors are mounted one above another.聽
Students Shaka Chu and Jack Park have led the project. Credit: University of Sydney
They also hope their computations will help NASA engineers and scientists better understand Ingenuity's interaction with Martian wind and聽the Mars Perseverance Rover.
The team says their approach is essential to understanding how spacecraft fly and operate, as it is impossible to聽accurately聽mimic all space conditions on Earth.
鈥淚ngenuity鈥檚 test flight聽is聽an important milestone in space exploration as it聽demonstrates聽the efficacy of helicopter technology on Mars, which has conditions quite different to Earth,鈥� said Shaka Chu.
鈥淥n Earth, helicopters rely on lift created by the fast spinning of their rotors, however they operate under聽Earth鈥檚聽atmospheric and gravitational conditions,鈥� said Mr Chu.
鈥淥n Mars, flying conditions are quite different. Firstly, the atmosphere聽聽is composed predominantly of carbon dioxide聽at one-hundredth the density of sea level air, meaning that聽Ingenuity聽must displace enormous volumes of Martian atmosphere downwards to stay aloft.聽Secondly,聽Ingenuity also experiences only one third of the聽Earth鈥檚聽gravitational聽force聽making Earth-based testing extremely challenging,鈥� said Jack Park.
鈥淭here are no humans or engineers on Mars, which is why computational engineering is so important," he said.聽
Associate Professor Ben Thornber said: 鈥淐omputations including the complex geometry of the Rover are enormously challenging, but thanks to our new computational models we can deliver important insights to help understand and advance upon the flight performance of this unique helicopter."