28 Apr '22 13:39>
https://news.yahoo.com/mars-helicopter-captures-stunning-images-084039630.html
@liljo said1% ?...................is that all?
The whole thing is an awesome accomplishment, but just the fact they can get the thing to fly considering Mars atmosphere is only 1% that of Earth...that is amazing!
@liljo saidDoes the machine have double rotors, or what?..........Did you notice?
@jimm619
Yes, according to Astronomy magazine. They did a full article on the rover and helicopter in a recent magazine. They said the volume of atmosphere on Mars is only 1% of that on Earth. One can only imagine the engineering challenges that had to be met for the helicopter to achieve lift off and actually fly any distance at all over the Martian surface.
@jimm619 saidI really didn't notice. I will see if I can dig out that article from Astronomy Magazine. It was very thorough, but I'm not certain if it covered many details of the design. It was mostly covering the mission plans. I'll do my best to find it and check it out.
Does the machine have double rotors, or what?..........Did you notice?
@liljo saidYou can do an internet search for the Mars Ingenuity Helicopter. It does appear to have two rotors, but I'm certainly no expert on the subject! Lots of good intel about it though.
I really didn't notice. I will see if I can dig out that article from Astronomy Magazine. It was very thorough, but I'm not certain if it covered many details of the design. It was mostly covering the mission plans. I'll do my best to find it and check it out.
@sonhouse saidWhy, then , are we unable to helicopter to
@jimm619
It doesn't matter the number of rotors, it is the design of the rotor blades and the rpms the go, I think those blades are running about 3000 RPM, a lot higher than helicopters on Earth but we now know they work on mars so whenever humans get there, there will be designs able to carry humans as well, it's just a matter of engineering now.
@jimm619 saidWhat makes you think we are?
Why, then , are we unable to helicopter to
the top of Everest?
@jimm619 saidIt probably is not safe at that altitude because of the jet stream. It is also really cold and fuel does not burn well in thin air.
Why, then , are we unable to helicopter to
the top of Everest?
@liljo saidNot really.
The whole thing is an awesome accomplishment, but just the fact they can get the thing to fly considering Mars atmosphere is only 1% that of Earth...that is amazing!
@metal-brain saidOK man...so, the fact that man has been able to reach Mars at all, land a rover, operate a helicopter-type drone...doesn't impress you all that much, huh...
Not really.
How fast can you make a blade turn in a vacuum? Pretty fast since there is no air resistance, but no lift because there is no air. Just change the gear ratio so it goes faster in the 1% Mars atmosphere. Faster = more resistance
= more lift.
I wonder if the moon's atmosphere is too thin for a helicopter.
@liljo saidIt was impressive the first time I heard about them.
OK man...so, the fact that man has been able to reach Mars at all, land a rover, operate a helicopter-type drone...doesn't impress you all that much, huh...
Yeah...Okay. You just do you. I am amazed.