Tag: Perseverance

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On April 22, 2023 the Mars helicopter Ingenuity completed its fifty-first flight on Mars, flying 617 feet west for about 136 seconds at an altitude of about 39 feet. As has been routine for the past dozen or so flights, all these numbers were slightly higher than the flight plan, probably because the helicopter took extra time to find a good landing spot.

The panorama above, cropped, reduced, and enhanced to post here, was taken by Ingenuity about halfway through the flight. Unlike the black and white images that the helicopter takes looking straight down, this color image looks at an oblique angle of 22 degrees below the horizon. The colors are not corrected. The view looks east, looking backwards into Belva Crater. You can see Perseverance on the left, with its tracks cutting across the frame. Belva is filled with ripple dunes.

The blue dot on the overview map to the right marks Perseverance’s present position. The green dot marks Ingenuity’s take-off point, with the green line indicating the approximate flight path.

Click for original image, with more information about it here.

With the Mars rover Perseverance now only about seventy-five feet away from the helicopter Ingenuity, the closest the two robots have been on Mars since Ingenuity was deployed in April 2021, the science team used Perseverance’s high resolution camera to take a new close up of the helicopter.

That picture, reduced and sharpened to post here, is to the right. From the caption:

Small diodes (visible more clearly in this image of helicopter) appear as small protrusions on the top of the helicopter’s solar panel. The panel and the two 4-foot (1.2-meter) counter-rotating rotors have accumulated a fine coating of dust. The metalized insulating film covering the exterior of the helicopter’s fuselage appears to be intact. Ingenuity’s color, 13-megapixel, horizon-facing terrain camera can be seen at the center-bottom of the fuselage.

This close-up is important to determine the overall state of the helicopter after two years on Mars. The engineering team that operates it does not know how much longer Ingenuity can last, so any data on its condition is extremely helpful.

That fine coat of dust on the panel and the rotors tells us that even flight and fast-rotating motion is not enough to keep such things clean on Mars. Thus we learn that there is likely no quick solution to the accumulation of dust on solar panels on Mars.

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The photo above, cropped, enhanced, and annotated to post here, was taken on April 16, 2023 by the left navigation camera on the Mars rover Perseverance, and looks almost due west at the rim of Jezero Crater and the gap in that rim where the delta on which the rover presently travels poured through sometime in the distant past.

Near the center of the picture can be seen the helicopter Ingenuity, sitting where it landed after its fiftieth flight.

The overview map to the right provides the context. Ingenuity is the green dot, Perseverance the blue dot. The yellow lines indicate the approximate area covered by the picture. The red dotted line marks the planned route for Perseverance. Note how the rover has followed Ingenuity’s recent flight path almost precisely, moving to the north away from that red dotted line.

Ingenuity’s 51st flight is presently scheduled for tomorrow. The plan is to go about 600 feet to the west, landing approximately at the black dot.

Click for interactive map.

The Ingenuity team yesterday announced that the Mars helicopter has successfully completed its 50th flight on Mars on April 13, 2023, flying 1,057.09 feet (322.2 meters) in 145.7 seconds, while setting a new altitude record of 59 feet. The green dot marks its new location on the overview map to the right, with the blue dot marking Perseverance.

Built with many off-the-shelf components, such as smartphone processors and cameras, Ingenuity is now 23 Earth months and 45 flights beyond its expected lifetime. The rotorcraft has flown for over 89 minutes and more than 7.1 miles (11.6 kilometers). “When we first flew, we thought we would be incredibly lucky to eke out five flights,” said Teddy Tzanetos, Ingenuity team lead at JPL. “We have exceeded our expected cumulative flight time since our technology demonstration wrapped by 1,250% and expected distance flown by 2,214%.”

The helicopter is beginning to show signs of age, with its engineering team recognizing that its life could end at any time, especially because it now has to fly more often to keep ahead of Perseverance, while also keeping within communications range.

The helicopter however is now giving us clues as to where the Perseverance science team wants to send the rover. Notice how its path has shifted north away from its planned route (along the red dotted line) to travel just below the rim of Belva Crater, following Ingenuity. The helicopter team is thus providing the rover team some specific additional information about the ground ahead, aiding in planning travel.

Click for interactive map.

The Ingenuity team today posted the official flight totals for the Mars helicopter’s 49th flight, which took place yesterday.

The helicopter flew 925 feet for 143 seconds, or two minutes and twenty-three seconds. The plan had been to fly 894 feet for 135 seconds, but has been happening consistently for the past dozen or so flights, the helicopter spent a little more time in the air and traveled a little farther.

As for altitude, it apparently did exactly as planned, averaging about 40 feet in height until the end of the mission, when Ingenuity went straight up another twelve feet to get a wider view of its landing area.

The map to the right shows the context. The green dot marks Ingenuity’s location at the start of the flight. The green line indicates my approximate estimate of its flight path and landing area, which the engineering team has not yet posted. The white dots and line mark Perseverance’s path, with its present location at the area dubbed Tenby where it has obtained its first core sample from the top of the delta.

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Though the science team has not, as of this posting, added the flight to Ingenuity’s flight log, according to the interactive map showing the positions of both Ingenuity and Perseverance on Mars, the helicopter completed its 47th flight yesterday as planned.

An annotated version of that map is to the right. The larger green dot marks Ingenuity’s new position. The smaller green dot marks its position when the panorama above was taken on February 27, 2023, capturing the helicopter in the distance (as indicated by the arrow). The yellow lines indicate the approximate area covered by that panorama. The blue dot marks Perseverance’s present position.

The flight’s planned distance was to go 1,410 feet to the southwest and “image science targets along the way.” As the helicopter also flew above Perseverance’s planned route, as indicated by the red dotted line, it also provided the rover team information about the ground Perseverance will travel along the way. Since the terrain here is generally not very rough, the information is not critical for route-picking. It might however spot some geological feature that bears a closer look that would not have been noticed by the rover alone.

Click for original image.

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The panorama above, cropped, enhanced, and annotated to post here, was taken by left navigation camera on the Mars rover Perseverance on February 27, 2023, looking ahead at its future path on the delta that flowed into Jezero Crater sometime into the past. The arrow points at Ingenuity, now sitting ahead of the rover after completing its 46th flight sometime this weekend.

On the overview map to the right, Perservance’s present location is indicated by the blue dot. The green dot marks Ingenuity’s position, and the yellow lines indicate the approximate area viewed by the panorama above. The red dotted line indicates Perseverance planned future route, though it is likely the science team will make many side trips along the way. The bigger dots are points of special interest, where the scientists hope to drill for core samples.

The ridge on the right is the rim of Belva Crater. The higher mountain behind it is likely the rim of Jezero Crater itself, about four miles away. The helicopter sits about 250 feet away.

Unlike the rocky terrain where Curiosity is presently traveling in the foothills of Mount Sharp in Gale Crater, the terrain here in Jezero Crater appears much more benign, almost like a sand desert of dunes. This is not sand, nor are the hills dunes, but wind erosion and dust appear to have smoothed and hidden the geology more than in Gale Crater.

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On February 22, 2023, the Mars helicopter Ingenuity completed its 45th flight on Mars, flying 1,627 feet in 2 minutes and 24 seconds. This was 13 feet farther than planned, and 5 seconds longer, the extra distance likely because the helicopter needed to find a good landing spot.

The green dot on the map to the right indicates Ingenuity’s new position. The blue dot marks Perseverance’s position. The rover has been moving fast, quickly climbing up onto the delta behind Ingenuity only days after it has completed each recent flight. It appears the Perseverance science team wishes to reach the top of the delta as fast as possible, where it can then begin drilling for more core samples.

It is becoming increasing clear the limitations of Perseverance. It was designed to obtain these core samples for return to Earth, but in the process many of the geological tools and sensors that Curiosity carries were eliminated. The result is the Perseverance can’t actually find out as much about the geology in Jezero Crater as Curiosity can. This doesn’t mean it can’t do any geological work, because it certainly can, but all of the analysis of drill samples that Curiosity does is beyond Perservance’s capabilities. It basically can only do contact science and close inspection. The analysis of its drilled samples must wait until the samples are returned to Earth, about a decade from now.

Click for interactive map.

The Mars helicopter Ingenuity today successfully completed its 43rd flight on Mars, traveling 1,280 feet for 2 minutes and 26 seconds.

The green dot on the map to the right marks Ingenuity’s position before the flight, with the green lines marking the approximate direction and distance flown. The Perseverance/Ingenuity team has not yet updated its interactive map, so the precise landing spot is not yet available.

This flight was the helicopter’s longest since April 2021, just before the onset of the long six-month-long Martian winter. At that time Ingenuity completed its 28th flight, traveling 1,371 feet. Since then engineers struggled to keep Ingenuity alive during the dark winter, a task made more difficult due to an unexpected higher winter dust storm season.

Winter however is over, the helicopter is now fully charging with no problem, and has new flight software that allows it to go higher and over rougher terrain. In fact, like the last flight, Ingenuity flew farther and longer than planned, as it had been programmed to go 1,235 feet for 2 minutes and 17 seconds. That extra 45 feet and 9 seconds were likely used by the helicopter to locate a safe landing spot.

For perspective, Ingenuity’s total mission was originally planned to last only 30 days, and complete about a half dozen test flights merely to prove the concept of flight on Mars was possible. It has now lasted two years, completed 43 flights, and traveled almost five and a half miles. An amazing engineering achievement by JPL’s engineering team.

To see the original images, go here and here.

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After two years of detailed exploration on the floor of Jezero crater, the rover Perseverance and its Mars helicopter scout Ingenuity have finally begun the climb up onto the delta that in eons past flowed into Jezero Crater.

The panorama above was created from two Perseverance images taken by its right navigation camera on February 7, 2023 (Sol 699) (here and here), looking forward and uphill. On the overview map to the right the blue dot marks Perseverance’s location, with the yellow lines indicating the approximate area covered by this mosaic. The red dotted line in both images indicate approximately the rover’s eventually path.

Ingenuity’s present position is marked by the green dot. This is where the helicopter landed after completing its 42nd flight on February 4, 2023. Planned to fly 823 feet for 137 seconds, Ingenuity actually flew a slightly shorter distance, 814 feet, in that length of time. The difference is probably the result of Ingenuity’s need to find a good landing spot, and the one it found was slightly closer to its take-off point.

The flight however took the helicopter uphill, scouting the terrain that Perseverance plans to drive. While there is no terrain here that is much of a challenge for the rover, having the helicopter’s ground images in advance allows its operators to plan longer drives, as those images will help tell them what obstacles to avoid and route to choose.

The green oval indicates the area that Perseverance has left its first ten core samples for later pickup and return to Earth.

Click for interactive map.

On January 27, 2023, the Mars helicopter Ingenuity successfully completed its 41st flight, flying about 600 feet total in an out-and-back flight that took 109 seconds, slightly longer in length and time than originally planned.

You can watch a very short animation from a handful of the pictures taken during the flight at the first link above. The green dot on the overview map to the right marks Ingenuity’s position before and after the flight, the blue dot Perseverance’s present location. The green line indicates the flight’s approximate path, designed to scout the route that Perseverance intends to follow, as indicated by the red dotted line. The actual flight path has not yet been published. I will add it to this map when the Ingenuity science team provides it.

Expect the next flight to duplicate this one, except it will likely not return but land somewhere out ahead.

Click for interactive map.

On January 29, 2023 the Perseverance science team completed the placement of the first ten core samples on the floor of Jezero Crater.

On the overview map to the right, the green outline indicates the location of this sample depot. The blue dot marks Perseverance’s present location, while the green dot marks Ingenuity. The red dotted line shows the planned route up onto the delta, which is Perseverance’s next goal.

The titanium tubes were deposited on the surface in an intricate zigzag pattern, with each sample about 15 to 50 feet (5 to 15 meters) apart from one another to ensure they could be safely recovered. Adding time to the depot-creation process, the team needed to precisely map the location of each 7-inch-long (18.6-centimeter-long) tube and glove (adapter) combination so that the samples could be found even if covered with dust. The depot is on flat ground near the base of the raised, fan-shaped ancient river delta that formed long ago when a river flowed into a lake there.

This mapping will be used by a future Mars helicopter to precisely land by each sample, grab it, and then take it to the ascent vehicle for return to Earth.