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With Flight 15, Ingenuity began the journey back towards "Wright Brothers Field" at "Octavia E. Butler Landing," the site where Perseverance touched down with Ingenuity in February. This flight was performed with the recently-increased rotor speed of 2,700 rpm. After reviewing the data from Flight 15, the Ingenuity team is prepared to attempt our Flight 16 no earlier than Thursday, Nov. 18. With Flight 15, Ingenuity began the journey back towards "Wright Brothers Field" at "Octavia E. Butler Landing," the site where Perseverance touched down with Ingenuity in February. This flight was performed with the recently-increased rotor speed of 2,700 rpm. After reviewing the data from Flight 15, the Ingenuity team is prepared to attempt our Flight 16 no earlier than Thursday, Nov. 18.
Flight 16 will be a shorter, 109-second flight. Ingenuity will climb up to 33 feet (10 meters), glide over the "Raised Ridges" at 3 mph (1.5 meters per second), then land near the edge of "South Seitah," covering a distance of 380 feet (116 meters). We plan to capture a series of nine color Return-to-Earth (RTE) camera images evenly spaced throughout the flight, oriented to the southwest and opposite the flight path.
If we could fly all the way across Seitah on Flight 9, why are we breaking the return path into multiple segments? As discussed in the Flight 9 retrospective post, the terrain of Seitah is particularly challenging for Ingenuity's navigation algorithm. Because the navigation algorithm assumes flat terrain, any changes to the terrain height introduces heading error.
On Flight 9, Ingenuity landed 154 feet (47 meters) away from the center of our 164-foot-(50-meter)-radius target airfield. The heading error on Flight 9 was less of a concern because the terrain of South Seitah was benign and allowed a large degree of uncertainty in our landed position.
However, the terrain on the north side of Seitah is rockier. As a result, we have to be more precise in our landing location on the return path. Flight 16 will tackle the tricky terrain of the Raised Ridges. By doing a short flight over these ridges, we reduce accumulated heading error that can build up over longer flights.
Flight 16 will set up Ingenuity for a Seitah crossing on Flight 17, getting us closer to the current goal of Wright Brothers Field. While waiting for the Perseverance rover to catch up after Flight 17, the Ingenuity team is considering performing a flight software update to enable new navigation capabilities and better prepare Ingenuity for future flights.
Related Links
Ingenuity Mars Helicopter
Mars News and Information at MarsDaily.com
Lunar Dreams and more
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NASA sending Mars helicopter back to where it all started
Washington DC (UPI) Nov 8, 2021
NASA's Mars helicopter Ingenuity has flown for the 15th time on Mars, starting a journey back to its starting point for future missions in a new direction. The latest flight, over the weekend, was relatively short - at just 128 seconds - and was designed in part to further test flight conditions at Jezero Crater now that summer has arrived. "Ingenuity opportunistically took images of science interest and they'll be processed soon," NASA posted on Twitter. Flight controllers plan ... read more