The Ingenuity helicopter, which has been fluttering around the red planet for almost three years now, fell out of contact with Perseverance, the rover that brought it to the planet (and that it communicates with using Zigbee!). NASA wrote yesterday that the flight, its 72nd, was a test of its systems after it was forced to land it early during its previous flight. The agency is working toward reestablishing contact. While we wait, here’s a recent video of the helicopter in action.
Considering it was just meant to be a proof of concept and only fly once or twice I would say that 71 flights, a max altitude of 78 ft(24 m), and 10.6 miles or 17 kilometers of travel, not to mention all of the footage from its on board cameras, makes Ingenuity an astounding success.
…This processor will have not flips on Mars, possibly up to every few minutes. Their solution is to hold two copies of memory and double check operations as much as possible, and if any difference is detected they simply reboot. Ingenuity will start to fall out of the sky, but it can go through a full reboot and come back online in a few hundred milliseconds to continue flying.
-jhurliman
During a flight is a bit much, but some aircraft have a reboot between flights as a standard procedure to fix glitches that would happen if the plane was left on for the entire time.
Considering it was just meant to be a proof of concept and only fly once or twice I would say that 71 flights, a max altitude of 78 ft(24 m), and 10.6 miles or 17 kilometers of travel, not to mention all of the footage from its on board cameras, makes Ingenuity an astounding success.
NASA’s rovers have been kicking ass for the last few decades. Truly a testament to how great their engineering teams are
Especially considering the use of off-the-shelf Snapdragon 801.
There’s some nice discussion about Ingenuity here: https://news.ycombinator.com/item?id=26177619
Reboot mid flight is a funny solution
Imagine telling an airline pilot to just reboot the whole plane if something goes wrong.
During a flight is a bit much, but some aircraft have a reboot between flights as a standard procedure to fix glitches that would happen if the plane was left on for the entire time.
Definitely exceeded my expectations.
I think it exceeded everyone’s expectations. I know I’m pretty astounded. I didn’t realize it had been three years!
I was amazed it could fly at all in the thin atmosphere of Mars.
I believe they took this into account when they designed the thing.