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General control line discussion => Open Forum => Topic started by: Elwyn Aud on February 09, 2021, 10:40:52 AM
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I see where the UAE Mars probe has successfully entered obit. It won't land but just circle the planet collecting data. The Chinese and American probes will both attempt to land a probe on the surface. A whole lot more difficult. The American lander is supposed to have a helicopter on board. If they can pull that off it will be amazing.
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No kidding.
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Yeah, but the FAA will probably fine them for violating Amazon's drone delivery air space.
Bob Hunt
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LL~
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That Mars probe will probably take lots of pictures. But none as good as the ones Elwin gets.
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I see where the UAE Mars probe has successfully entered obit. It won't land but just circle the planet collecting data. The Chinese and American probes will both attempt to land a probe on the surface. A whole lot more difficult. The American lander is supposed to have a helicopter on board. If they can pull that off it will be amazing.
Particularly since the atmospheric density is only .6% of sea level earth. Howard can tell you what density altitude that corresponds to.
Brett
p.s. 112,000 feet. Highest altitude achieved by a manned helicopter = 41,000 feet - only recently have helicopters been able to reach the top of Mt. Everest, at 29000 feet.
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Particularly since the atmospheric density is only .6% of sea level earth.
Considering that the NASA scientists aren't particularly dumb, this is how they conducted their experiments. Intriguingly they even took into account Mars' lower gravity.
https://www.nasa.gov/feature/jpl/nasas-mars-helicopter-completes-flight-tests
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How many prop driven airplanes can fly at 116000 thousand feet. I am sure they have it figured out and it will be a great accomplishment.
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3-in-a-row for Mars, this time the Perseverance lander.
Brett
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The video report of the landing was a bit of a nail-biter considering all the steps involved in getting everything slowed down and then getting the rover safely on the surface. Well done NASA!!! The Chinese probe will just be orbiting for now with an attempted landing in the future.
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How many prop driven airplanes can fly at 116000 thousand feet. I am sure they have it figured out and it will be a great accomplishment.
Just under 97;000 feet here on Earth. The aircraft is sort of a giant version of an indoor rubber powered endurance flyer.
https://en.wikipedia.org/wiki/AeroVironment_Helios_Prototype
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Video of some of the test flights. Skip the first minute to see more controlled flight:
https://www.youtube.com/watch?v=nAQxNd3uBN0
Some more detail about the heli:
https://www.youtube.com/watch?v=GhsZUZmJvaM
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It sounds much like a deHavilland Twin Otter running up over at the airport. Listened to that for years.
Fingers and toes crossed here that they get at least their five discovery/engineering flights in--and maybe an extra!
Dave