[tonygrue]

It has to survive the trip there, be mostly autonomous, and most importantly operate in the low atmosphere and harsh environment of Mars. All things no off the shelf design will get you.

Here are some highlights: https://solarsystem.nasa.gov/news/472/10-things-mars-helicop...

[jcims]

Veritasium did a great vid as well -https://www.youtube.com/watch?v=GhsZUZmJvaM