Ingenuity helicopter seen on Mars as viewed by the Perseverance rover’s rear Hazard Camera. NASA/AFP
Nasa has delayed by at least several days the first flight of its mini-helicopter on Mars after a possible tech issue emerged while testing its rotors, the US space agency said on Saturday.
Mars Helicopter's first experimental flight to April 14 after a test completed earlier than planned.
The flight was earlier scheduled for April 11.
A high-speed test of the four-pound (1.8 kilogramme) helicopter's rotors on Friday ended earlier than expected due to an alert of a potential issue, according to AFP
"The helicopter team is reviewing telemetry to diagnose and understand the issue," Nasa said in a statement. "Following that, they will reschedule the full-speed test."
Mars Helicopter with all four of its legs deployed before dropping from the belly of the Perseverance rover. NASA/AFP
Nasa noted the copter is "safe and healthy" and had sent information back to Earth.
Initially the plan for Sunday was to have Ingenuity fly for 30 seconds to take a picture of the Perseverance rover, which touched down on Mars on February 18 with the helicopter attached to its underside.
Nasa calls the unprecedented helicopter operation highly risky, but says it could reap invaluable data about the conditions on Mars.
The flight is a true challenge because the air on Mars is so thin -- less than one percent of the pressure of Earth's atmosphere.
This means Ingenuity must spin its rotor blades much faster than a helicopter needs to do on Earth in order to fly.
After the flight, Ingenuity will send Perseverance technical data on what it has done, and that information will be transmitted back to Earth.
This will include a black and white photo of the Martian surface that Ingenuity is programmed to snap while flying.
A day later, once its batteries have charged up again, Ingenuity is to transmit another photo -- in colour, of the Martian horizon, taken with a different camera.
If the flight is a success, Nasa plans another no more than four days later. It plans as many as five altogether, each successively more difficult, over the course of a month.
Nasa hopes to make the helicopter rise five meters (16 feet) and then move laterally.The mission is be the equivalent on Mars of the first powered flight on Earth -- by the Wright brothers in 1903 in Kitty Hawk, North Carolina. A piece of fabric from that plane has been tucked inside Ingenuity in honor of that feat.
The Mars mission has been named Tianwen-1, the official Xinhua news agency reported, citing the China National Space Administration (CNSA). The unmanned exploration mission to Mars is expected to be launched this year.
Weighing just four pounds (1.8 kilograms), its blades are much larger and spin about five times faster -- 2,400 revolutions per minute -- than would be required to generate the same amount of lift back on Earth.
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