Mars Helicopter (before it went to Mars)

Caption notes

Before the Mars helicopter departed, Veritasium interviewed the Jet Propulsion Laboratory team. The interview connects several design constraints. Thin air called for faster rotors while the team kept blade-tip speed and vehicle mass in check. Ground testing addressed two conditions separately. A chamber simulated low pressure, while an upward pull reduced the weight the helicopter had to support. The team also describes how onboard sensors and closed-loop control support autonomous flight. This is the team’s 2019 account of the design and test setup. Footage and mission outcomes were not independently verified for this guide.