lol - The Mars Ingenuity helicopter sounds like this under Mars atmospheric conditions

[jpak]

On edit - corrected autocorrect in OP

[catbyte]

1. It sounds like my neighbor's lawn mower.

[jpak]

2. Does your neighbor have 3 eyes and a horn?

[sarge43]

3. Leaf blower. Hell's ring tone

I wish Carl Sagan would lived to see this. He would have been entranced.

[zanana1]

9. Hell's ring tone!

I love it! I hate the sound of leafblowers.

[zanana1]

10. Hell's ring tone!

I love it! I hate the sound of leafblowers.

[2naSalit]

4. That's not actual video but an animation.

You can tell by the multiple views from half a dozen angles, there are only two or three views one can see from our equipment there; From the rover, the drone or a craft from above if there is one.

Therefore, this may not be the actual sound of the drone thingy in the Mars atmosphere after all.

[jpak]

5. They actually recorded it in a vacuum chamber - sounds just like the animation

https://www.democraticunderground.com/1017642330

longer JPL video

[2naSalit]

6. Cool!

[jpak]

7. It begins at 5:34 minutes into the JPL video

[csziggy]

8. Actual sounds from Mars

Explanation of why there are microphones on the Perserverance start at 38:00. Actual sounds at just after 41:00 and 42:00 - turn your sound all the way up.

[TomVilmer]

11. The little boy in me cheers, but powering this with kilos of plutonium are stupid!

The rover is powered by 10 pounds of plutonium dioxide, some of it Plutonium-238. Both launch and landing went exactly according to plan this time, but the method is risky - for both planets:

Across all mission phases, most launch accidents would result in destruction of the launch vehicle but would not result in damage to the MMRTG sufficient to cause a release of some plutonium dioxide. For accidents in the launch area, the probability of a release of plutonium dioxide in an accident is 52 percent. For the overall mission, the analysis estimates that about 0.10 percent of the time (a probability of 1 in 960), a launch could result in an accident with the release of plutonium dioxide. ...