NASA's Mars helicopter is slowly unfolding beneath the Perseverance rover

Space.com ^ | 3/30/21 | Elizabeth Howell

[LibWhacker]

Loved the three minute video/audio clip => See Perseverance's latest rover tracks & Mars' 'litter' pics (with Sol 16 audio), with the rover's titanium wheels squeaking, crunching, screeching as they roll over the Martian regolith. Not at all like the sound rubber tires make anywhere on earth.

[Red Badger]

That happened to a car I had once....................

[Hot Tabasco]

titanium wheels squeaking,

Too many PHD engineers and scientists working at NASA. They should have hired a neighborhood mechanic to grease the wheel bearings....

[LibWhacker]

Hahaha, I know you were kidding. But for the sake of a few others on FR, the squeaking sound isn’t coming from ungreased wheel bearings, but from the noise of sharp, hard metal rolling over the shards of a zillion asteroids, etc., that have accumulated on the planet’s surface the last few billion years.

[rightwingcrazy]

To deal with the low atmospheric temperature and pressure, you might use something like this, but then you'd still have to be concerned with abrasion and maybe corrosion from all that dust. Better off putting up with a little squeaking, maybe.

[Seruzawa]

It’s good to see NASA take some time out from their main objective: Muslim Outreach

[tennmountainman]

All legs have deployed. The only thing left is to drop it 5” to the surface and back away to observation point.

[Flick Lives]

Amazing a helicopter can be designed that will operate in an atmosphere less than 1% of Earth normal pressure.

Earth Sea level: 14.69 PSI
Top of Mt Everest: 4.89 PSI
Mars: 0.095 PSI

[Revel]

How far are they going to get without an oil pan.

[Flick Lives]

...the rover’s titanium wheels squeaking, crunching, screeching as they roll over the Martian regolith.

—

Interesting audio. At some points, you hear a typical metallic “ping” of a metal object striking a surface and “ringing”. I wonder how sound waves are influenced by the very low pressure of the atmosphere?

[steve86]

I think noises aren’t as loud and don’t carry as far, no?

[Yardstick]

Amazing images. More Hollywood than Hollywood.

[Flick Lives]

Interesting NASA website where you can even test how your voice would sound on Mars. To me, the effect was my voice sounded more muffled and slightly lower in pitch.

https://mars.nasa.gov/mars2020/participate/sounds/?voice=true

[LibWhacker]

Voices sound lower in pitch...

Wow, liberals might finally start sounding like men! Maybe they'd start acting like it too. Send all liberals to Mars!

Love the site. Great find.

[Allegra]

Send all liberals to Mars!

They’ll litter it all up with their used masks and Starbucks cups.

[knarf]

Here's Ingenuity !

[LibWhacker]

OMG, you're right!

[minnesota_bound]

Maybe just using chocolate will lower your tone of your voice?

big bang theory, sheldon lowers penny’s voice
https://www.youtube.com/watch?v=MSm-BunhEws

[Oatka]

It's the second thing Perseverance dropped in recent weeks, after an unneeded belly pan relating to its sampling system.

Life imitates art. There is a GROANER Sci-Fi horror pic titled "The Creeping Terror" - (some college students under a carpet monster goes around devouring various humans. Incredibly bad acting as well.)

What I found interesting was that at the end, it was discovered that the "creature" was sent by an alien race to see what was on Earth, sampling the environment and sending back the chemical makeup - YEARS ahead of our Mars explorer. :-)

[MrKatykelly]

Just curious, IIRC, moon rocks are the most expensive item, by weight, on earth. So if we get rocks from Mars I’m guessing moon rocks look cheap huh?