Ingenuity helicopter poised for maiden flight on Mars

Ingenuity helicopter poised for maiden flight on Mars
By William Harwood
NASA's Mars helicopter prepares for flight
After troubleshooting a software glitch, NASA's $80 million Ingenuity helicopter will attempt its first controlled, powered flight in the ultra-thin atmosphere of Mars early Monday that could be a "Wright brothers moment" paving the way to future interplanetary aircraft.
Tipping the scales at just 4 pounds — 1.5 pounds in the lower gravity of Mars — Ingenuity's counter-rotating 4-foot-long rotors, spinning at 2,400 revolutions per minute, will be commanded to change their pitch, "biting" deeper into the thin atmosphere for a liftoff from the floor of Jezero Crater at 3:31 a.m. ET.

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