NASA's new generation of Mars helicopter will increase to "supersonic speed"

NASA recently announced that its new generation flight system built for the harsh environment of Mars has passed key tests in a ground simulation environment, and the rotor tip speed has been successfully advanced to a level exceeding the local speed of sound, laying the foundation for more efficient and complex air exploration missions on Mars in the future. The extremely thin atmosphere of Mars makes flying "almost the most difficult thing you can imagine." The breakthrough of this new technology means that Mars helicopters will usher in a qualitative leap in lift and load capacity.

This progress builds on the foundation laid by the Ingenuity helicopter. As the first human aircraft to achieve controlled flight on other planets, Ingenuity has officially been retired, but its technology and experience are being integrated into the latest "Skyfall" Mars helicopter project launched by NASA's Jet Propulsion Laboratory (JPL) to support future joint human and robot exploration.

In the Skyfall plan, one of the most important upgrades to the helicopter is to significantly increase the upper limit of the rotor speed. When Ingenuity performs its mission on Mars, the speed of its foam rotor is limited to 2,700 revolutions per minute (rpm) to ensure a safety margin. Today, JPL engineers are pursuing higher performance indicators, hoping that the new generation of Mars helicopters will greatly increase the available lift and maneuverability while maintaining reliability.

To verify the design, NASA researchers recreated the atmospheric composition and flight conditions of Mars in JPL's space simulator, and tested the rotor system developed by AeroVironment. Near Earth's sea level, the speed of sound is about 760 miles per hour, while in Mars' thin, carbon dioxide-rich atmosphere, Mach 1 is roughly equivalent to 540 miles per hour. In a simulated environment, the test rotor was able to withstand rotational speeds of up to 3,750 rpm, with a tip speed close to Mach 0.98.

The research team then activated additional fans in the simulation cabin to continue applying airflow, further increasing the rotor tip speed to Mach 1.08, achieving a true "supersonic rotor" test. NASA pointed out that this performance improvement shows that the new generation of Mars helicopters are expected to increase the maximum takeoff weight by about 30% in the future, creating conditions for carrying more scientific instruments and larger-capacity batteries.

NASA's positioning of the Skyfall project goes far beyond "flying on Mars." The system is planned to be equipped with a variety of sensors and scientific payloads to obtain data on the Martian atmosphere, surface and near-surface environment to provide support for geology, climate and potential resource distribution research. Stronger lift and energy reserves also mean that the aircraft can perform longer range and more complex missions, including conducting pilot surveys for ground exploration vehicles or future human landing sites.

According to current assumptions, the first Skyfall mission will launch three helicopters to Mars at one time to form a coordinated aerial exploration formation in order to maximize scientific output in one mission. NASA has used the latest ground test data to correct and refine the mission parameters and flight envelope, and plan the mission plan accordingly. This ambitious scientific mission is currently scheduled to be launched in December 2028. If it goes well, the Martian sky will usher in a "rotor fleet" with capabilities far exceeding Ingenuity in the 2030s.