NASA’s plan to help Ingenuity through the winter on Mars

enlarge In this concept illustration from NASA, NASA’s Ingenuity Mars Helicopter stands on the surface of the Red Planet as NASA’s Mars 2020 Perseverance rover rolls away.

NASA

Ingenuity, NASA’s autonomous Mars helicopter, was intended to complete just five flights. But since its history makes first flight by April 2021, the helicopter has flown 28 times and preparations for the 29th are in full swing. Depending on the Perseverance rover’s dust levels and schedule, that flight could take place as early as later this week. But now Ingenuity faces a new challenge: It’s unclear whether the helicopter will survive the coming winter on Mars, which begins in July.

Since a Martian year on Earth is about two years and the helicopter is in the Northern Hemisphere, this is Ingenuity’s first winter. As the solstice approaches, the days become shorter and the nights longer, and dust storms may become more frequent. All of that means less sunlight for the solar panels mounted above the helicopter’s two 1-foot rotor blades. Dust on solar panels recently spelled the end of operations for NASA’s InSight Mars lander, and the effects of cold on electronics are said to have played a role in the end of the Opportunity and Spirit Mars rover missions.

“We believe it’s survivable,” Dave Lavery, NASA’s program director for the Ingenuity Mars Helicopter, told WIRED, but “every extra day is a gift.” JPL Ingenuity team leader Teddy Tzanetos recently wrote in a NASA blog post that “every sol (Martian day) could be Ingenuity’s last.”

Last month, Ingenuity briefly lost contact with Earth due to a decline in battery life, most of which is destined for heating. NASA reestablished contact with Ingenuity after two days, but due to the battery level dropping below 70 percent and continued lower temperatures, Ingenuity will suspend use of the onboard heater overnight to conserve energy during the four-month winter. Heaters usually kick in when temperatures drop below -5° Fahrenheit, a figure that has been reduced to -40 after last month’s battery shortage and communications outage. Outside temperatures during the winter on Mars can drop to -112° at night, increasing the risk of damage to electronics inside the helicopter.

On Monday, NASA announced the failure of a sensor, causing Flight 29 to delay and NASA to uplink a software patch and rely on another sensor to control Ingenuity’s navigation algorithms.

Dust storms are an X factor. An investigation published in May, a team from the University of Houston examined data from NASA sensors over a period of four Mars years, and found that solar imbalances and warm weather in the south increase the likelihood of massive dust storms that could blanket the entire planet. . Spring and summer are known as storm seasons, but the chances of severe storms decrease as the north approaches the winter solstice, says University of Houston associate professor Liming Li. But there’s a caveat: The study is global and doesn’t consider any specific region. Also, the conditions in craters can be different than on the rest of the surface, and the helicopter operates in the Jezero Crater.

“It’s hard to say,” Li said when asked if more dust storms are on the way. “It’s difficult to get a clear picture of the radiation budget at Jezero Crater before we actually measure it.”

As Ingenuity ceases normal flight activity, the team will focus on transferring data such as flight performance logs and high definition images of the last eight flights and making software upgrades. based on a climate modelNASA expects solar energy levels to recover to levels that will allow for the resumption of normal activity this fall. If Ingenuity is able to heat its systems at night again in September or October, it can resume regular flight operations and identify possible sites for the perseverance robber to keep a collection of rock and soil samples and explore what scientists say used to be a river delta in the Jezero crater

#NASAs #plan #Ingenuity #winter #Mars

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