First Flight on Another Planet!

The Mars Helicopter aims to make the first powered flight on another planet when it takes off on Mars as part of the Mars 2020 mission. I learned a lot getting to visit the drone right before it was mounted on the rover. How do you fly in 1% of Earth’s atmosphere: Have large rotors (they are in diameter) and spin them very fast, around 2500 RPM (5x the speed of a helicopter on Earth). Plus the aircraft has to be light: The Mars helicopter weighs in at or around the same as a laptop. Every piece