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Forum Index : Other Stuff : ingenuity flight on Mars
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| zeitfest Guru  Joined: 31/07/2019 Location: AustraliaPosts: 482 |
Amazing stuff... I saw the initial clip "live", this one shows the full ascent/descent as well. ingenuity flight |
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Chopperp Guru Joined: 03/01/2018 Location: AustraliaPosts: 1057 |
Thanks for the link. I also saw it live plus a brief replay of it's rising. Good to see it do it's programmed rotation in the link. I understand it took about 4 hours to get tbe initial lot of data sent back home & processed. They were anxious to get some visual confirmation that all went well. The latest SpaceX docking to the ISS was interesting as well. Rather slow though as per usual. Brian ChopperP |
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| Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578 |
I saw that on the News the other night. I nearly fell off my chair and couldn't stop laughing when they said the thing cost $100M. I can't get my head around how the hell that little thing could cost hundred million ( no doubt US) bucks and all it did was go up and down for 30 sec or whatever. There was nothing better they could spend that sort of money on?? |
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| Chopperp Guru Joined: 03/01/2018 Location: AustraliaPosts: 1057 |
Third successful flight here ChopperP |
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| Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578 |
Good job they can get more than one flight for their $100K. Anyone know if the thing is rechargeable or when the power pack is done that's it? |
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| rogerdw Guru Joined: 22/10/2019 Location: AustraliaPosts: 852 |
I wanna know how it got over to the launch spot. Who put it there?  Cheers, Roger |
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| Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406 |
As I thought, this mars mission and the helicopter are fake. https://www.youtube.com/watch?v=N9HHH_H5KoU The helicopter kicks up absolutely no dust which is impossible. Mars is completely covered in super fine dust laid down by millions of years of wind erosion with no rain ever happening to secure it to the surface. No dust from the downdraft means this is just CGI fakery, the mission is fake as I originally stated and then clearly demonstrated with the (now faked properly) "camera images" but they screwed up again, evidently Mars is a clean room that has no dust. You know - the dust that can completely block out all views of the surface during dust storms. The dust they claim has seriously stifled previous rovers because it built up on the solar panels. Where is it in that helicopter video? it should have been a red-out or brown out. I figured the helicopter would be a failure from the dust, WHERE IS IT??? Cut and pasted From Jim Stone's website. Cheers, Tony. |
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| zeitfest Guru Joined: 31/07/2019 Location: AustraliaPosts: 482 |
It suggests that small very-high-altitude helicopter flight is possible on Earth as well, apart from duration problems. So, if solar power can sustain it, a very-high-altitude helicopter could hover for a few months in the sun above a polar location...much cheaper than geostationary satellites. |
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| Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578 |
That would be impossible at this point in time and for the foreseeable future. There is no way cells could be lightweight or efficient enough for that to happen for a very long time yet if ever. The energy required to get the vehicle up high and the power required to sustain it in the thin air would be magnitudes beyond practical. There is also the problem of wind. If there is air for the chopper to work with, there will be wind and plenty of it. Would be impossible to hold a fixed position or probably even control the crafts position given the wind speeds at different altitudes. It's a nice thought but before that happened we'd have cars that were daylight mileage unlimited with some panels on the the roof or Bonnet, solar planes with cells on the wings and a lot of other things way before solar helicopters. |
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| zeitfest Guru Joined: 31/07/2019 Location: AustraliaPosts: 482 |
solar plane |
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| Davo99 Guru Joined: 03/06/2019 Location: AustraliaPosts: 1578 |
And the point of the link is?? |
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| Warpspeed Guru Joined: 09/08/2007 Location: AustraliaPosts: 4406 |
The big advantage of space satellites is they are high enough to cover a large expanse of the globe. A high altitude aircraft can only "see" from horizon to horizon which would not be very useful in comparison. As Dave says, the higher you go, the more difficult it all becomes as the atmosphere surrounding the earth is very thin compared to the diameter of the earth. It is definitely possible to build an aircraft that can stay airborne almost indefinitely without resulting to solar power, which obviously does not work at night. The Russians have had this for a very long time in the form of a cruise missile that can go completely around the world many times, and therefore has unlimited range. Its done with a closed cycle steam turbine driving a propeller. Heat for the boiler comes from radioactive decay of plutonium 238, and a condenser recycles the same water continuously. Its a very slow low altitude cruse missile with terrain following intelligence, so its very difficult to detect. And its also totally silent... The same plutonium 238 heat source is commonly used in thermoelectric generators for generating electrical power directly, for space applications. The two Voyager probes have been out there for decades still radioing back even now, way out beyond the sun and the entire solar system, and solar power. Edited 2021-05-01 15:18 by Warpspeed Cheers, Tony. |
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