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Eyeing a few of the elements that enabled the Perseverance rover to get safely to the Martian floor may present worthwhile insights for future missions.
NASA’s Ingenuity Mars Helicopter recently surveyed both the parachute that assisted the agency’s Perseverance rover land on Mars and the cone-shaped backshell that protected the rover in deep space and during its fiery descent toward the Martian surface on February 18, 2021. Engineers with the Mars Sample Return program asked whether Ingenuity could provide this perspective. What resulted were 10 aerial color images captured on April 19 during Ingenuity’s Flight 26.
“NASA extended Ingenuity flight operations to perform pioneering flights such as this,” said Teddy Tzanetos, Ingenuity’s team lead at NASA’s Jet Propulsion Laboratory in Southern California. “Every time we’re airborne, Ingenuity covers new ground and offers a perspective no previous planetary mission could achieve. Mars Sample Return’s reconnaissance request is a perfect example of the utility of aerial platforms on Mars.”
Entry, descent, and landing on Mars is fast-paced and stressful, not only for the engineers back on Earth, but also for the vehicle enduring the gravitational forces, high temperatures, and other extremes that come with entering Mars’ atmosphere at nearly 12,500 mph (20,000 kph). The parachute and backshell were previously imaged from a distance by the Perseverance rover.
But those collected by the rotorcraft (from an aerial perspective and closer) provide more detail. The images have the potential to help ensure safer landings for future spacecraft such as the Mars Sample Return Lander, which is part of a multimission campaign that would bring Perseverance’s samples of Martian rocks, atmosphere, and sediment back to Earth for detailed analysis.
“Perseverance had the best-documented Mars landing in history, with cameras showing everything from parachute inflation to touchdown,” said JPL’s Ian Clark, former Perseverance systems engineer and now Mars Sample Return ascent phase lead. “But Ingenuity’s images offer a different vantage point. If they either reinforce that our systems worked as we think they worked or provide even one dataset of engineering information we can use for Mars Sample Return planning, it will be amazing. And if not, the pictures are still phenomenal and inspiring.”
In the images of the upright backshell and the debris field that resulted from it impacting the surface at about 78 mph (126 kph), the backshell’s protective coating appears to have remained intact during Mars atmospheric entry. Many of the 80 high-strength suspension lines connecting the backshell to the parachute are visible and also appear intact. Spread out and covered in dust, only about a third of the orange-and-white parachute – at 70.5 feet (21.5 meters) wide, it was the biggest ever deployed on Mars – can be seen, but the canopy shows no signs of damage from the supersonic airflow during inflation. Several weeks of analysis will be needed for a more final verdict.
Flight 26 Maneuvers
Ingenuity’s 159-second flight began at 11:37 a.m. local Mars time April 19, on the one-year anniversary of its first flight. Flying 26 feet (8 meters) above ground level, Ingenuity traveled 630 feet (192 meters) to the southeast and took its first picture. The rotorcraft next headed southwest and then northwest, taking images at pre-planned locations along the route. Once it collected 10 images in its flash memory, Ingenuity headed west 246 feet (75 meters) and landed. Total distance covered: 1,181 feet (360 meters). With the completion of Flight 26, the rotorcraft has logged over 49 minutes aloft and traveled 3.9 miles (6.2 kilometers).
“To get the shots we needed, Ingenuity did a lot of maneuvering, but we were confident because there was complicated maneuvering on flights 10, 12, and 13,” said Håvard Grip, chief pilot of Ingenuity at JPL. “Our landing spot set us up nicely to image an area of interest for the Perseverance science team on Flight 27, near ‘Séítah’ ridge.”
The new area of operations in Jezero Crater’s dry river delta marks a dramatic departure from the modest, relatively flat terrain Ingenuity had been flying over since its first flight. Several miles wide, the fan-shaped delta formed where an ancient river spilled into the lake that once filled Jezero Crater. Rising more than 130 feet (40 meters) above the crater floor and filled with jagged cliffs, angled surfaces, projecting boulders, and sand-filled pockets, the delta promises to hold numerous geologic revelations – perhaps even proof that microscopic life existed on Mars billions of years ago.
Upon reaching the delta, Ingenuity’s first orders may be to help determine which of two dry river channels Perseverance should climb to reach the top of the delta. Along with route-planning assistance, data provided by the helicopter will help the Perseverance team assess potential science targets. Ingenuity may even be called upon to image geologic features too far afield for the rover to reach or to scout landing zones and sites on the surface where sample caches could be deposited for the Mars Sample Return program.
More About Ingenuity
The Ingenuity Mars Helicopter was built by JPL, which also manages the project for NASA Headquarters. It is supported by NASA’s Science Mission Directorate. NASA’s Ames Research Center in California’s Silicon Valley and NASA’s Langley Research Center in Hampton, Virginia, provided significant flight performance analysis and technical assistance during Ingenuity’s development. AeroVironment Inc., Qualcomm, and SolAero also provided design assistance and major vehicle components. Lockheed Space designed and manufactured the Mars Helicopter Delivery System.
At NASA Headquarters, Dave Lavery is the program executive for the Ingenuity Mars Helicopter.
More About Perseverance
A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust).
Subsequent NASA missions, in cooperation with ESA (European Space Agency), would send spacecraft to Mars to collect these sealed samples from the surface and return them to Earth for in-depth analysis.
The Mars 2020 Perseverance mission is part of NASA’s Moon to Mars exploration approach, which includes Artemis missions to the Moon that will help prepare for human exploration of the Red Planet.
JPL, which is managed for NASA by Caltech in Pasadena, California, built and manages operations of the Perseverance rover.
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