About To Invade Mars Again

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Scarpozzi

Lifer
Jun 13, 2000
26,391
1,780
126
Sharon Stone doesn’t like this
I'm hoping the rover discovers some real 3 breasted aliens. Not sure if you've seen how they did it for Total Recall or not, but it was a challenge for them to create what probably exists on the red planet...
 

olds

Elite Member
Mar 3, 2000
50,121
778
126
The team behind Ingenuity are not yet sure whether it is even possible for a helicopter to hover above the Martian surface. Mars' atmosphere is less than one percent the density of Earth’s, so it may be too thin for the helicopter to successfully fly.

They couldn't replicate that here? Why would they even send it if they didn't know the answer?
 
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IronWing

No Lifer
Jul 20, 2001
72,828
33,856
136
The team behind Ingenuity are not yet sure whether it is even possible for a helicopter to hover above the Martian surface. Mars' atmosphere is less than one percent the density of Earth’s, so it may be too thin for the helicopter to successfully fly.

They couldn't replicate that here? Why would they even send it if they didn't know the answer?
Helicopters can't really fly on earth either.
 

BoomerD

No Lifer
Feb 26, 2006
66,260
14,689
146
The team behind Ingenuity are not yet sure whether it is even possible for a helicopter to hover above the Martian surface. Mars' atmosphere is less than one percent the density of Earth’s, so it may be too thin for the helicopter to successfully fly.

They couldn't replicate that here? Why would they even send it if they didn't know the answer?

How could they replicate the various conditions...the difference in gravity, atmospheric density, temperature, Matt Damon trying to shoot it down...
 

Spacehead

Lifer
Jun 2, 2002
13,067
9,858
136
I guess it's just a proof-of-concept. Still pretty cool though.
The Mars Helicopter, Ingenuity, is a technology demonstration to test powered flight on another world for the first time. It is hitching a ride on the Perseverance rover. A series of flight tests will be performed over a 30-Martian-day experimental window that will begin sometime in the spring of 2021. For the very first flight, the helicopter will take off a few feet from the ground, hover in the air for about 20 to 30 seconds, and land. That will be a major milestone: the very first powered flight in the extremely thin atmosphere of Mars! After that, the team will attempt additional experimental flights of incrementally farther distance and greater altitude. After the helicopter completes its technology demonstration, Perseverance will continue its scientific mission.

https://mars.nasa.gov/technology/helicopter/
 

olds

Elite Member
Mar 3, 2000
50,121
778
126
How could they replicate the various conditions...the difference in gravity, atmospheric density, temperature, Matt Damon trying to shoot it down...
It's 19" tall. Fly it in a vacuum chamber in a vomit comet. Or something similar.
 

olds

Elite Member
Mar 3, 2000
50,121
778
126
The other thing that is cool, it that Percy is supposed to take (coring?) samples that will be brought back to Earth. Now, that's something.
 

sdifox

No Lifer
Sep 30, 2005
100,183
17,886
126
The other thing that is cool, it that Percy is supposed to take (coring?) samples that will be brought back to Earth. Now, that's something.


That is happening with followup missions, don't know the details.
 

zinfamous

No Lifer
Jul 12, 2006
111,855
31,345
146

kinda neat

Is that a camera from one of those google streets cars?

man, how cool would that be, to start loading up a map of Mars as that thing rolls around. We can walk around like on Google Street View.
 

Greenman

Lifer
Oct 15, 1999
22,236
6,431
136
It's 19" tall. Fly it in a vacuum chamber in a vomit comet. Or something similar.
They tested it in a vacuum chamber with a pully at the top and a weighted string attached to the little chopper.
There is a video on youtube showing the development.
 

repoman0

Diamond Member
Jun 17, 2010
5,191
4,572
136
How are they going to protect that thing during storms? Seems like the winds would just blow it away.

With 1% of the atmospheric density of earth, I wouldn’t expect even very fast winds to have a whole lot of force behind them
 

repoman0

Diamond Member
Jun 17, 2010
5,191
4,572
136
Seems like you'd be hard pressed to tell if you were standing in a tornado.

I was doing some reading about it ... apparently winds need to be 35+ mph to even kick up dust, and they don’t really get much faster than 60. There are planet wide dust storms roughly one in three years though that block most surface sunlight for weeks or months, but apparently don’t feel like a violent storm ... just that all of a sudden the air is dusty.