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The first flight on Mars will happen in April 2021 with the Ingenuity helicopter flying about one storey high for 60 seconds. It is part of the Perseverance mission rover that has already landed on the planet Mars. This video in WSJ shows how the Ingenuity helicopter was developed by NASA using a contractor Aeroenvironment which specializes in unmanned flight vehicles. The development process took 7 years and testing was done at the JPL Labs. JPL Labs has a vacuum space that can be filled with CO2 similar to atmosphere on MARS. 

Engineers doing the work for the helicopter say flight on MARS is challenging because of the thinner air. This will be a first in planetary flight compared to Wright Brothers first 120 second flight.

LyrArc Article Gist
Perseverance at NASA, and after eight years of patient hard work overcoming the hurdle of doing the Mars Mission during coronavirus lockdown, lead to the final launch of the spacecraft to Mars on July 30, 2020. The mission craft is aptly called Perseverance. Names matter, the ship James Cook used to make the first trip of discovery to Australia was aptly called Endeavour and a replica can still be seen at the British Museum. The mission will provide clues to why the planet Mars once warm and wet turned into a dry desert, what about its ancient history made this happen. The mission will send rock samples back to earth, investigate the geology and climate on the planet, search for any signs of life, and look at the prospects for human exploration. A small helicopter Ingenuity will make the first flight on another planet.  Some facts about this mission- It can only be launched every 26 months as the earth and the planet Mars have to be on the same side of the sun which happens every 26 months for 3 weeks.  It costs 500 million dollars just to store the craft if the mission was delayed 26 months because of the pandemic. Other than the cost the reason for launching now without error was the need to give America enthusiasm about new frontiers to be explored even as it conducted the fight against the pandemic. NASA has 2000 scientists and engineers at JPL in California and 400 technical workers at KSC in Florida who do the work for missions. This mission used an essential team that did the work during the lockdown even as other scientists and engineers worked from home.   ...