NASA engineers at the Jet Propulsion Laboratory pushed experimental Mars helicopter rotor blades past the speed of sound during supersonic tests in March. The breakthrough boosts lift capacity by 30 percent, paving the way for the SkyFall mission in November 2028 to deploy three instrument-carrying helicopters to search for Martian ice.
Supersonic Testing Inside JPL’s 25-Foot Space Simulator
Flying on Mars presents an extreme aerodynamic challenge because the planet’s atmosphere is extremely thin, reaching just 1 to 2 percent of Earth’s density, according to ScienceAlert. To generate enough lift to fly in this low-density, carbon-dioxide-rich environment, rotor blades must spin at exceptionally high speeds.
During tests conducted in March at NASA’s Jet Propulsion Laboratory (JPL) in Southern California, engineers performed a total of 137 test runs inside the historic 25-Foot Space Simulator, as reported by Space. The test team removed the chamber’s air and replaced it with carbon dioxide at pressure levels matching Martian conditions. By mounting a three-bladed rotor provided by AeroVironment of Simi Valley, California, and utilizing internal fans to blast the blades with headwinds, engineers drove the rotor tip speeds past Mach 1.
Engineers also tested a longer, two-bladed rotor designed specifically for the upcoming SkyFall mission, which achieved similar near-supersonic speeds at fewer rotations per minute.
Lessons From Ingenuity and the Shift to Science Payloads
The historic Ingenuity Mars Helicopter proved that powered, controlled flight was possible on another world, completing 72 flights at Jezero Crater between April 2021 and 2024, as noted by BGR. However, Ingenuity operated strictly as a technology demonstration and carried zero scientific instruments. Its flight control team intentionally capped rotational speeds to keep rotor tips around Mach 0.7.
“If Chuck Yeager were here, he’d tell you things can get squirrely around Mach 1,”
Jaakko Karras, rotor test lead at JPL
For next-generation aircraft, however, NASA requires substantially greater performance. The supersonic capability increases lift by approximately 30 percent, according to BGR, enabling future vehicles to carry heavier batteries, specialized sensors, and science instruments over longer distances.
SkyFall Mission Architecture and AeroVironment Partnership
Building on this aerodynamic progress, NASA and defense contractor AeroVironment have begun development on three new helicopters for the SkyFall mission, scheduled for a November 2028 launch window. AeroVironment’s MacCready Works advanced solutions team secured a contract to co-design and co-manufacture key helicopter systems, including rotor assemblies, airframes, structures, and avionics integration, while JPL handles power, electronics, algorithms, and software.
Unlike Ingenuity, which arrived on Mars bolted beneath the Perseverance rover, the three SkyFall units will travel independently inside a carrier spacecraft. According to Zamin.uz, each helicopter will weigh approximately 2.5 to 2.7 kg—heavier than Ingenuity’s 1.8 kg build—and feature expanded solar panels for continuous power. The spacecraft will deploy the trio directly into the atmosphere via a novel maneuver where the helicopters separate, descend, and land under their own power.
Subsurface Ice Detection and Scientific Goals
Each SkyFall helicopter will carry a ground-penetrating radar (GPR) equipped with a flexible antenna designed by JPL to inspect soil structure at depths ranging from 12 to 60 cm, as reported by Zamin.uz. This radar suite allows the fleet to map shallow water ice deposits across complex Martian terrain, aiding site selection for future human exploration.
Operating as an autonomous fleet, the three helicopters will communicate directly with orbiters rather than relying on a surface rover for data relay.
“NASA had a great run with the Ingenuity Mars Helicopter, but we are asking these next-generation aircraft to do even more at the Red Planet.”
Al Chen, Mars Exploration Program manager at JPL
Продолжение темы
