Helicopter makes sunset flight over Mars Can glow in the dark.
A new study shows that Mars-based drones, such as Ingenious Helicopter conducts periodic missions on the Red Planet, “which can cause microscopic electrical currents to flow through the Martian atmosphere,” according to NASA.
Latent currents aren’t a threat to helicopters, if they’re really present in the first place, but will create interesting effects for any nearby cameras. More broadly, the study provides an avenue to better understand the buildup of charge on the blades, known as “three-dimensional charging.”
The study’s lead author, Bill Farrell, a plasma scientist at NASA’s Goddard Space Flight Center in Maryland, said in the same statement: “The dim light will be most visible during the hours. evening when the background sky is darker. Unfortunately, he added, Ingenuity is an experimental drone that is not supposed to fly at dusk or dawn, but we could see the effect on Mars helicopters in the future. future.
The process by which Martian drones can glow is similar to common effects on Earth from electrical currents, including the halo or electric glow sometimes seen on rovers, together with ships in electrical storms called Holy Flame Elmo, said NASA.
The tripolar charging occurs during the process of friction that moves electrical charges between objects, which you can often see when a person rubs a ball against their hair on Earth. The balloon then “sucks up” the person’s hair, showing evidence of an electric field caused by the rubbing.
Laboratory measurements and computer modeling show that as Mars rovers spin their propellers, they encounter dust particles from intermittent storms and dust demons on the surface Red Planet.
“When the blades impact the particles, electrical charge is transferred, which accumulates on the blades and creates an electric field,” NASA said in the statement. “As the charge rises to a high level, the atmosphere begins to conduct electricity, a process known as ‘atmospheric decay.’ [The process is] induces a population of electrons that form an elevated current that has the effect of dissipating or offsetting the charge that has built up on the rotor. “
A study based on this research Published March 10, 2021 in Planetary Science Magazine, and NASA chose to highlight the research in a press release on Tuesday (February 1) this week.
The study was published before the Perseverance rover and Ingenuity landed on Mars on February 18, 2021; almost a year later, Ingenuity has made 18 flights and spent more than 30 minutes aloft during these various sorties.
https://www.space.com/mars-helicopters-ingenuity-glow-in-the-dark Why Mars Helicopters Like Ingenuity Can Glow In The Dark