NASA tested the blades of the future Martian helicopter at supersonic speeds.

NASA engineers reveal new technological breakthrough

During tests of a new Mars helicopter, NASA engineers surpassed the speed of sound for the first time, reaching 1.08 Mach. This is almost one-third higher than the previous Ingenuity vehicle and paves the way for more payload‑capable aerial scouts.

How the tests were conducted
* Vacuum chamber – simulates the Martian atmosphere (pressure ~100 times lower than Earth's).
* Rotors – several variants: a three‑blade and a two‑blade “SkyFall”.
* To simulate real conditions, an additional propeller was used to create a counter airflow; the actual helicopter will have two propellers to prevent rotation around its axis.

Key results
Parameter | Three‑blade rotor | Two‑blade rotor
---|---|---
Speed (rpm) | 3750 | 3570
Diameter | smaller | larger
Achievement of supersonic | slower | faster

The two‑blade rotor, thanks to its diameter, reaches the target speed more quickly and demonstrates better dynamics.

Breaking the sound barrier was accompanied by extreme loads, but the design withstood them without damage, confirming its suitability for future missions.

What this means for Martian helicopters
* Increased lift – about 30 %, due to supersonic rotation of blade tips.
* Higher payload capacity – ability to carry heavy scientific instruments, larger‑capacity batteries, and complex navigation systems.
* Expanded tasks – not only terrain reconnaissance (as with Ingenuity), but also delivering equipment to hard‑to‑reach canyons, craters, and caves; supporting ground rovers.

Looking ahead
A SkyFall mission to Mars with a nuclear engine is planned for the end of 2028. The descent vehicle should drop three helicopters that will search for optimal landing sites for humans on the Red Planet.

Developing ultra‑high‑speed rotors opens new horizons for exploring Mars and could become the foundation of a full aerial transport system, greatly expanding the capabilities of future expeditions.