Flight 17 is approximately half of Flight 9 in reverse, which was one of the most challenging flights for Ingenuity to date. The crossing of the "Seitah" region of Mars' Jezero Crater will take at least two flights, with a stop halfway across. This stop is necessary for two reasons.
Ingenuity's reduced flight time, because of higher rotor RPMs, means that Ingenuity would need to fly faster to cover the same distance. Flying faster increases the navigation uncertainty built up during a flight, which means larger landing ellipses are required. By flying slower, Ingenuity can better target a landing site in South Seitah.
The second reason is that the terrain on the eastern side of South Seitah is more hazardous than the western side. During flight 9, we knew Ingenuity would have a larger uncertainty in the landing location, but that was acceptable since the area was relatively benign. This is not the case this time around. With two flights, Ingenuity can better target safe landing sites on the eastern side of Seitah, without excessive risk on landing.
During Flight 17, Ingenuity is expected to fly 187 meters at an altitude of 10 meters and be airborne for 117 seconds.
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