NASA-associated researchers reported that the experimental rotor airfoil roamx-0201 had an approximately 19–43% higher lift-to-drag ratio than CLF5605, the airfoil used on Ingenuity. The AIAA Journal study compared the designs at a Reynolds number of 20,000, Mach 0.60, and a range of angles of attack. Its findings on maximum lift and stall behavior came specifically from computational results.
What the study found
Lift-to-drag ratio compares the lift an airfoil generates with the aerodynamic drag it produces. A higher ratio means more lift relative to drag under the tested conditions. Across the methods reported in the paper, roamx-0201’s ratio was approximately 19–43% higher than CLF5605’s.
| Measure | roamx-0201 result versus CLF5605 | Method scope |
| Lift-to-drag ratio | Approximately 19–43% higher | Reported across the study’s methods |
| Maximum lift | Approximately 20% higher | OVERFLOW and PyFR computational results |
| Stall characteristics | Superior | OVERFLOW and PyFR computational results |
The authors used OVERFLOW implicit large-eddy simulations, PyFR direct numerical simulations, and experiments in Tohoku University’s Mars Wind Tunnel. Stall occurs when an airfoil loses lift as its angle of attack increases. The paper’s abstract assigns the maximum-lift and stall findings to OVERFLOW and PyFR; it reports the lift-to-drag improvement across the study’s methods.
How to interpret the range estimate
Phys.org separately reported a model-based projection of up to 18.7 km in one flight for a future Mars helicopter carrying scientific instruments. That figure describes a projected vehicle range, rather than the airfoil-level comparisons in the AIAA Journal study.
NASA records that Ingenuity completed 72 flights, covering 17.0 km in total. Its last flight was on January 18, 2024, and NASA marked the mission complete on January 25, 2024. The cumulative distance across those flights is a different measure from a projected distance for one future flight.
