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24-02-2021, 11:21 AM
51

Re: Live - Mars Rover Landing on the 18th

Originally Posted by Surfermom ->
Nice, Longdogs!

Scroll down on this link and you'll find two clips where you listen to the first recordings of a Martian breeze.

https://www.nasa.gov/press-release/n...ng-first-audio

They have recording of what they believe is a a quake by NASA's InSight.
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24-02-2021, 11:58 AM
52

Re: Live - Mars Rover Landing on the 18th

Originally Posted by Bruce ->
More pictures arriving from the Mars Rover on the Martian surface:




Love it Bruce.....
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19-04-2021, 10:40 AM
53

Re: Live - Mars Rover Landing on the 18th

Mars helicopter may have taken off in a 30 second flight.

https://www.independent.co.uk/life-s...-b1833619.html

The data takes hours to get back over the distance between Mars and the Earth, however. Nasa will not announce how the flight went – or whether it did – until 11.15am UK time.

Hope it was a success.

https://www.bbc.co.uk/news/science-environment-56799755

The American space agency has successfully flown a small helicopter on Mars.

The drone, called Ingenuity, was airborne for less than a minute, but Nasa is celebrating what represents the first powered, controlled flight by an aircraft on another world.

Confirmation came via a satellite at Mars which relayed the chopper's data back to Earth.
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19-04-2021, 01:25 PM
54

Re: Live - Mars Rover Landing on the 18th

Chopper on Mars .....

Well done, NASA .....
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19-04-2021, 01:41 PM
55

Re: Live - Mars Rover Landing on the 18th

Originally Posted by Omah ->
Chopper on Mars .....

Well done, NASA .....
Apparently the new Mars rover is slowing down,
It is believed that dust settling on the voltaic cells is blocking light
from reaching the cells an thus reducing voltage to the batteries ??
Meanwhile the old lander has been perambulating around the
Martian landscape for l think a couple of years now?
Perhaps they should call the window cleaner ??

Donkeyman! 👍🤗👍
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19-04-2021, 08:06 PM
56

Re: Live - Mars Rover Landing on the 18th

Apparently the atmosphere on Mars is only a fraction of that here on Earth, so the rotor blades have to be very large to scoop enough air to get it to rise. Our own helicopters can only fly up to a certain height before there is not enough air to keep them airborne.

Quote:

Turbine-engined helicopters can reach around 25,000 feet. But the maximum height at which a helicopter can hover is much lower - a high performance helicopter like the Agusta A109E can hover at 10,400 feet.

A lot lower on Mars.
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20-04-2021, 03:02 AM
57

Re: Live - Mars Rover Landing on the 18th

I don't think dust on the solar panels is anything new. I am sure I read somewhere that one of the vehicles on Mars shut itself down because of dust on the cells leading to low voltages in the battery however a Martian wind blew the panels clean again and, much to the surprise of the controllers on Earth, it rebooted itself and carried on as if nothing had happened.

Or was it the Martians that gave it a quick wipe over? Either way the software seems pretty clever and resilient as nothing can be controlled from Earth in real time.
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20-04-2021, 04:54 AM
58

Re: Live - Mars Rover Landing on the 18th

Originally Posted by OldGreyFox ->
Apparently the atmosphere on Mars is only a fraction of that here on Earth, so the rotor blades have to be very large to scoop enough air to get it to rise. Our own helicopters can only fly up to a certain height before there is not enough air to keep them airborne.

Quote:

Turbine-engined helicopters can reach around 25,000 feet. But the maximum height at which a helicopter can hover is much lower - a high performance helicopter like the Agusta A109E can hover at 10,400 feet.

A lot lower on Mars.
I read that the rotors spin at about five times the rate on Mars. The good news is that there would be less resistance when on a good run .
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20-04-2021, 08:01 AM
59

Re: Live - Mars Rover Landing on the 18th

Originally Posted by Surfermom ->
I read that the rotors spin at about five times the rate on Mars. The good news is that there would be less resistance when on a good run .
Mars has an atmosphere but it is not like Earths at all I seem to remember that it is mostly carbon dioxide (that could be wrong) and that it is only 1% that of our atmosphere.

Mars is also much smaller than Earth because Jupiter swept in and cleaned planet forming debris from its orbit (thank you Brian Cox) so running would be a lot of fun if you had not died from lack of oxygen/atmosphere lost because of its smaller mass.
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20-04-2021, 07:33 PM
60

Re: Live - Mars Rover Landing on the 18th

Originally Posted by Bruce ->
Mars has an atmosphere but it is not like Earths at all I seem to remember that it is mostly carbon dioxide (that could be wrong) and that it is only 1% that of our atmosphere.

Mars is also much smaller than Earth because Jupiter swept in and cleaned planet forming debris from its orbit (thank you Brian Cox) so running would be a lot of fun if you had not died from lack of oxygen/atmosphere lost because of its smaller mass.
Your numbers are about right and yes, one would have to have a healthy supply of O2 in tow.

Though it is still quite low, there is a very surprising, above predicted, rise of oxygen on Mars during its spring and summer months. There are both abiotic and biotic possibilities for this increase which has everyone scrambiling.
 
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