Analyse @NASAJPL's tweets
The #MarsHelicopter did a rotor spin test at 2,800 rpm. Next up – flight 14 – which will take place no earlier than Sept. 17. It will be a short hop to confirm rpm settings for future scouting efforts that could take place in lower atmospheric densities: https://t.co/DGF0eydImI https://t.co/HjuG5CrMbM