NASA's Mars helicopter goes on wild ride after navigation error, but is "ready to fly again"
A navigation timing error sent NASA's little Mars helicopter on a wild, lurching ride, its first major problem since it took to the Martian skies last month. The experimental helicopter, named Ingenuity, managed to land safely, officials at the Jet Propulsion Laboratory reported Thursday.
"Despite unexpected motion from an image processing issue, Ingenuity muscled through the final ~65 meters of its 215-meter journey, landed safely & is ready to fly again," JPL posted on Twitter, along with animated images of the flight on Twitter.
The trouble cropped up about a minute into the helicopter's sixth test flight last Saturday at an altitude of 33 feet. One of the numerous pictures taken by an on-board camera did not register in the navigation system, throwing the entire timing sequence off and confusing the craft about its location.
Ingenuity began tilting back and forth as much as 20 degrees and suffered power consumption spikes, according to Havard Grip, the helicopter's chief pilot.
A built-in system to provide extra margin for stability "came to the rescue," he wrote in an online status update. The helicopter landed within 16 feet of its intended touchdown site.
Ingenuity became the first aircraft to make a powered flight on another planet in April, two months after landing on Mars with NASA's rover Perseverance.
The 4-pound helicopter aced its first five flights, each one more challenging than before. NASA was so impressed by the $85 million tech demo that it extended its mission by at least a month.
Saturday's troubled flight was the first for this bonus period. Engineers have spent the past several days addressing the problem.
Ingenuity captured the world's imagination with its first flight on April 19, about a month after arriving on Mars with the Perseverance rover. The drone climbed up to an altitude of about 10 feet, hovered briefly and then landed.
It flew a second time on April 22, climbing to 16 feet and flying about seven feet to one side and then back again. For its third flight on April 25, Ingenuity climbed back up to 16 feet and flew 164 feet down range before returning to its starting point.
William Harwood contributed to this report.
