Drone cleaning with AIr™
Drone on Mars stirring up dust

Space Dust Cleaning with Drones

Dust accumulation is one of the most persistent operational constraints for solar-powered systems in space exploration, and one of the least solved. On Mars, progressive soiling and dust storms reduced available solar power, constrained rover operations, and contributed to mission-ending energy shortages.

The AIr™ airflow cleaning method relies on non-contact operation, zero liquid dependency, and autonomous sensor-based alignment. These principles align directly with the constraints of space-adjacent and extraterrestrial environments where conventional cleaning is impossible.

(photo: NASA/JPL-Caltech/ASU/MSSS)

Space dust cleaning event
Wind can deposit or remove dust (photo: NASA/JPL-Caltech)

Ingenuity and the Aerial Precedent

NASA’s Ingenuity helicopter, which arrived on Mars with the Perseverance rover in February 2021, demonstrated that autonomous aerial vehicles can operate in the thin Martian atmosphere.

Ingenuity was solar-powered, lightweight, and designed for repeated autonomous flight. Across 72 flights, its success established both the technical feasibility and the mission relevance of lightweight autonomous aerial systems for Mars surface operations.

Ingenuity also showed that rotor downwash can mobilise dust on Mars. High-speed imaging from Perseverance recorded dust being lifted during take-off until the helicopter climbed above about 3 m, and during landing from about 2.3–3.6 m altitude, with dust carried away at 4–6 m/s.

Lessons from Mars

NASA’s solar-powered Mars missions provide the clearest documented evidence of what unmanaged dust accumulation costs at a mission level:

  • Sojourner (1997)
    Solar-cell performance declined progressively during the mission as dust accumulated on the rover.
  • Spirit (2004–2011)
    After becoming stuck in soft sand, Spirit could not tilt its dusty solar panels toward the winter Sun. Dust-related power loss and declining sunlight contributed to a shortage of energy, followed by loss of contact.
  • Opportunity (2004–2019)
    Opportunity survived nearly 15 years, significantly beyond its 90-day design life, aided in part by periodic wind events that cleared panel surfaces. The mission ultimately ended following a major dust storm that blocked sunlight, sharply reduced available solar power, and was followed by loss of contact.

The Opportunity mission is particularly instructive. Its extended lifespan was partly attributable to periodic wind-cleaning events removing accumulated dust, demonstrating that airflow-based panel clearing works under Martian atmospheric conditions. The limitation was that those events were unpredictable and passive. An active, autonomous airflow system addresses precisely that gap.

Mars before and after dust winds
Mars before and after a dust storm (photo: NASA)

Conceptual Applications

AIr™ has explored the application of drone airflow cleaning principles to space dust cleaning and extraterrestrial environments as a forward-looking extension of the patented method. Potential mission-relevant applications include:

Solar Panel Maintenance for Rovers
Autonomous airflow cleaning of rover solar panels would provide consistent energy output during long-duration missions, reducing the operational dependency on unpredictable passive wind events that characterised the Opportunity mission profile.

Stationary Solar Array Maintenance
Future crewed Mars installations and research stations will likely rely on fixed solar arrays for base power generation. Regular autonomous cleaning cycles would maintain output without manual intervention, water, or chemical processes, all of which are either unavailable or prohibitively costly in an extraterrestrial context.

Instrument and Sensor Surface Maintenance
Beyond solar panels, space dust cleaning applies directly to cameras, atmospheric sensors, spectrometers, and navigation systems. Precision airflow clearing of sensitive instrument surfaces extends functional lifespan and reduces mission risk.

Low-Mass Adaptability
AIr™ uses a rotorcraft’s inherent downwash as the cleaning mechanism, avoiding a dedicated cleaning payload such as brushes, water storage, or spray hardware. That payload-light approach is valuable in mass-constrained planetary missions.

NASA’s Dragonfly rotorcraft mission (launch no earlier than July 2028, Titan arrival 2034) will expose its science instruments and navigation sensors to Titan’s organic aerosol and hydrocarbon particulate environment. Autonomous airflow-based sensor clearing could address that maintenance challenge.

Solar panel in desert
Sand and dust storm approaching a solar power plant

From Mars to Earth

The power constraints faced by Spirit and the wind-cleaning events that extended Opportunity’s life are not unique to Mars. Solar farms in the Sahara, Rajasthan, the Atacama, and the Arabian Peninsula face the same progressive soiling dynamic, while water and manual cleaning can be costly or impractical at remote sites.

The AIr™ method was developed for terrestrial arid environments first, but the underlying physics, operational constraints, and design requirements are directly shared with space exploration applications.

“Our mission is to reduce operation and maintenance costs for solar energy while increasing panel profitability. By using drone cleaning technology, we aim to decrease the frequency of manual wet cleans, making solar energy more accessible and efficient, even in marginal areas.”
Ridha Azaiz, Inventor, AIr™

The AIr™ method patent covers sensor-based airflow cleaning of surfaces, including the applications explored here.

Related Planetary Literature

Separate from AIr™, published research from the Mars 2020 mission has characterised how Ingenuity’s rotor downwash naturally mobilises Martian surface dust: