Nasa’s Mars helicopter Ingenuity will never fly again, the space agency has said.
The pioneering robot vehicle was the first ever to achieve powered and controlled flight on another planet.
It had only been intended for a 30-day mission, used as a demonstration of the technology, which it conducted by travelling to Mars along with the Perseverance rover. But that month became almost three years and dozens of flights, before Nasa said that it would never take off again.
Nasa lost contact with Ingenuity recently but managed to get in touch with it once again. However, it sent back imagery that showed it had become damaged.
Those pictures, sent on January 18 after its 72nd flight, showed that it would be its final mission. The pictures show that a part of one of its rotor blades had broken and that it would no longer be able to fly.
“It is bittersweet that I must announce that Ingenuity, the ‘little helicopter that could’ – and it kept saying, ‘I think I can, I think I can’ – well, it has now taken its last flight on Mars,” Nasa Administrator Bill Nelson said in a video posted on social media.
What was planned as a 30-day technology demonstration of no more than five short flights ended up stretching well beyond the expectations of engineers who designed and built the helicopter at Nasa’s Jet Propulsion Laboratory (JPL) near Los Angeles.
Ingenuity ultimately buzzed over the Martian terrain 14 times farther than originally planned, logging more than two hours, eight minutes of flight time and covering a distance of 17 km through all 72 flights. Its peak altitude was measured at 24m.
When the 1.8kg rotor craft performed its modest, debut take-off and landing in the thin Martian atmosphere on April 19, 2021 – a flight of 39 seconds – it was hailed as a seminal feat of interplanetary aviation.
Nasa likened Ingenuity‘s achievement to the historic first controlled flight of the Wright brothers’ motor-driven airplane near Kitty Hawk, North Carolina, in December 1903.
Over time, JPL continued to send the helicopter on progressively more ambitious flights, pushing its capabilities.
The end came after JPL teams began flying Ingenuity into a particularly barren, featureless area of Mars, testing the limits of an auto-navigational system that depends on visible landmarks for aviation guidance, according to Teddy Tzanetos, JPL’s Ingenuity project manager. Nasa said Ingenuity made an “emergency landing” during what became its penultimate flight on January 6, apparently setting itself down more abruptly than planned due to navigational disorientation.
When JPL controllers sought to perform a short, vertical flight 12 days later to determine Ingenuity‘s location, data shows it rose off the ground, hovered briefly, then began a descent before losing contact with the rover, which serves as its communications relay with Earth.
Images the helicopter sent days later captured the shadow of its damaged rotor blade, apparently broken during its final touchdown, Mr Tzanetos told reporters.
Still, Nasa officials celebrated Ingenuity‘s exploits as paving the way for a new mode of aerial exploration on Mars and elsewhere in the solar system, such as Saturn’s moon Titan, for which a rotor-craft called Dragonfly is under development.
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