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The Perpetual MEGA Space Thread

First 'space helicopter' set to take to Martian skies
Dubbed "Ingenuity," the drone weighs just 4 pounds, and it will stay stored beneath the rover’s belly while Perseverance runs through its initial surface checks and experiments.

I think I saw earlier the density altitude at the surface of Mars is equivalent to 100,000 ft on Earth.


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Dubbed "Ingenuity," the drone weighs just 4 pounds...

I think I saw earlier the density altitude at the surface of Mars is equivalent to 100,000 ft on Earth.
It'll weight about 1½ pounds on Mars. Plus the gas properties of cold carbon monoxide means that the reynolds number on the rotor blades should be higher, which would improve L/D and rotor system performance ever so slightly. 100,000 feet DA should be no problem!
 
It'll weight about 1½ pounds on Mars. Plus the gas properties of cold carbon monoxide means that the reynolds number on the rotor blades should be higher, which would improve L/D and rotor system performance ever so slightly. 100,000 feet DA should be no problem!
I work occasionally with the Penn state guy who is developing the rotorcraft that will fly on Titan. The gravity is about 1/8th of here, but the pressure is about 50% higher and the air denser than on Earth at sea level. A drone designer's dream.
 
I hear they are filming it on the same sound stage as the so-called “moon walk.” ??
?

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Great article in the NYT about Saturn’s moon Titan, which is the only other object in the solar system to have liquid on the surface (methane). Also, the largest lake (bigger than all 5 of the Great Lakes combined) is named “Kraken Mare.”

 
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