Tag: Perseverance

The Ingenuity engineering team has revealed that the helicopter’s 15th flight on Mars will have it begin retracing its steps, following approximately the same flight route as it heads back towards Perseverance’s landing site in Jezero Crater.

Flight #15 is the start of our journey back to Wright Brothers Field [the helicopter’s initial flight test area just north of the landing site]. Taking place no earlier than Saturday, Nov. 6 at 9:22 a.m. PT, or 12:03 LMST (local Mars time), the 254th sol (Martian day) of the Perseverance mission, Flight #15 will return Ingenuity back to the Raised Ridges region, imaged in Flight #10. In this flight the helicopter will traverse 1,332 feet (406 meters) during 130 seconds of flight, travelling at 11.1 mph (5 mps) groundspeed. We’ll capture color return-to-earth (RTE) high resolution (13MP) images, one post-takeoff pointed to the SW, and nine pointed toward the NW along the flight-path. Nominal altitude for the flight is expected to be 39.3 feet (12 meters) above ground level.

This will be the second flight of Ingenuity during Mars’ summer low air-density, requiring that the rotor blades are spun at 2,700 RPM to compensate. This flight will generate critical high-RPM motor performance, which the team will use to design and tailor upcoming low-density flights in the months ahead.

Perseverance is presently sitting in an area they have dubbed Seitah, a region the rover skirted around to get to this point. I had hoped both the helicopter and rover would return to the north cutting across Seitah and thus scout out new terrain. Instead, it appears that both the rover and helicopter will return as initially planned, traveling over the same ground both took to get where they are today.

In other words, the teams have decided to take the safest route, though it will provide them much less new science data. While this might seem prudent, it really appears overly cautious, based on the capabilities of Perseverance and the roughness of the terrain in Seitah. Curiosity is presently traveling across far more difficult terrain in the mountains at the foot of Mt Sharp, and it is doing so with wheels that are damaged and not as well designed as Perseverance’s. Not roving in uncharted terrain seems a waste of Perseverance’s capabilities.

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Though the full slate of images taken has not yet been released, it appears from the five images available that the thirteenth flight of Ingenuity on September 5, 2021 ended successfully. The photo to the right is the last available, and shows the helicopter’s shadow on the ground mere seconds before touch down. The landing legs’ shadows suggest it is oriented properly for that landing.

No word yet on how successful the flight itself was. The goal had been to fly back over the South Seitah area from a different angle and lower altitude, getting different perspectives of the ridges there to help plan Perseverance’s coming travels across that terrain.

The second picture below, cropped, reduced, and enhanced to post here, was taken about forty minutes before take-off by Perseverance and captures Ingenuity in the lower left, as indicated by the arrow.
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Cool image time! The photo to the right was one of ten color images taken by Ingenuity on its twelfth flight on August 15, 2021. This photo is one of two images looking the same area from slightly different positions in order to create a stereoscopic view, with the other image found here.

The ground the helicopter was scouting, dubbed South Seitah, is an area that the Perseverance team hopes to send the rover. Ingenuity’s images from this flight will not only tell them whether the terrain is safe to traverse, it will allow them to map out a route that will avoid problems while effectively targeting the most interesting rocks.

The photo shows a lot of Martian dust, with a good portion forming small sand dune ripples. The rocks appear to be bedrock pavement stones, which because these are on the floor of the crater and the lowest elevation, likely hold the oldest geology that Perseverance will see on its journey in Jezero Crater. For this reason the science team is spending a lot of time studying that floor, and will make probably several drilling attempts to obtain samples.

The terrain in general looks entirely safe for the rover to travel. I expect the science team will thus continue north, crossing to North Seitah, rather than backtrack and travel over already traversed ground. Initially they had decided to avoid this ground because they feared it might be too rough for the rover. I suspect they were just being overly cautious at the start of the mission, and will now work past that fear.

According to the Perseverance science team, the Mars helicopter Ingenuity successfully completed its twelfth flight on Mars early yesterday, making a short scouting round trip over an area called South Seitah to provide images that the team can use to plan the rover’s future route.

All told, Ingenuity flew just under 1,500 feet flying about 30 feet above the ground for just under three minutes. The picture to the right was taken just before landing, and shows the helicopter’s shadow on the ground. It is one of six so far downloaded. The remaining images will follow later.

The announcement was made on Twitter, and included some embarrassingly over-the-top prose:

The #MarsHelicopter’s latest flight took us to the geological wonder that is the “South Séítah” region.

South Seitah is hardly a “geological wonder”. It is a sandy area with some rocks and interesting geology.

I’m not sure why, but the Perseverance rover team seems prone to do this with their press releases and announcements. The claim they make over and over that Perseverance’s prime mission is to look for ancient life is junk Now they call a relatively undistinguished and small area on a crater floor a “wonder.”

Makes one think they somehow feel a need to justify what they are doing, something that is patently absurd. They are controlling a robotic rover and helicopter tens of millions of miles away as both explore a place on another planet no one had ever visited before. That certainly is spectacular enough, and does not need purple prose to justify.

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The Ingenuity engineering team today announced their plans for the helicopter’s twelfth flight on Mars, scheduled for early tomorrow.

Ingenuity will climb to an altitude of 10 meters and fly approximately 235 meters east-northeast toward the area of interest in Séítah. Once there, the helicopter will make a 5-meter “sidestep” in order to get side-by-side images of the surface terrain suitable to construct a stereo, or 3D, image. Then, while keeping the camera in the same direction, Ingenuity will backtrack, returning to the same area from where it took off. Over the course of the flight, Ingenuity will capture 10 color images that we hope will help the Perseverance science team determine which of all the boulders, rocky outcrops and other geologic features in South Séítah may be worthy of further scrutiny by the rover.

The map above shows South Seitah in the yellow oval. The yellow line marks Ingenuity’s past flights. The white line marks the path Perseverance has taken south since landing. The dashed lines mark Perseverance’s planned route.

Thus, the helicopter will be obtaining aerial photos of the region in Seitah where the scientists want to send Perseverance, in order to help them pick the best route.

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Cool image time! Today the Perseverance science team released the 200 images that Ingeniuty took during its 10th flight on July 24, 2021.

The photo to the right was taken about 25 seconds before the helicopter landed, and looks to the southwest. In the foreground can be seen the ridge of rocks and pebbles that the scientists sent Ingeniuty to photograph. In the distance can be seen the rim of Jezero Crater, about 7.5 miles away, with some rounded hills that sit in the crater floor about 5.5 miles away.

The white box indicates the area covered by two high resolution images taken by Perseverance on July 28th that I have combined into the panorama below.
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The news coming from the Perseverance and Ingeniuty science teams has been sparse this past weekend, even though Perseverance had begun drilling its first core sample that it will stored for pickup by a later unmanned robot, and Ingenuity had attempted its 10th and most challenging flight yet.

We do have images however, and the two to the right give us hints about what has happened.

First, the top picture on the right was taken by Ingenuity’s navigation camera just prior to landing. The camera looks straight down and is used by the helicopter to adjust its flight. The dark area is the helicopter’s shadow. Based on this picture and the four preceding images (taken over an eleven second period), it appears the helicopter was landing safely. No other images have yet been downloaded, nor has the Ingenuity team announced any results, so we do not yet know if the flight proceeded as planned.

UPDATE: The flight was a success, as per this JPL announcement:

With the #MarsHelicopter’s #flight success today, we crossed its 1-mile total distance flown to date. It targeted an area called “Raised Ridges,” named for its #geographic features. Flight 10 is #Ingenuity’s most complex flight profile yet, with 10 distinct waypoints and a new #record height of 40 feet (12 meters).

The second image, taken by Perseverance’s left navigation camera and cropped and reduced to post here, is more puzzling. It shows what appears to be the core sample still in the ground after drilling. While this could be entirely as planned, it seems very surprising. Most of what I can find online describing the operation for obtaining these samples implies that the robot arm would drill the hole, and then retract the sample immediately to place it in storage. Nothing suggests the arm would be retracted with the sample still in the ground.

I think however the odds of this picture revealing a problem are low. This JPL press release from February 2021 implies vaguely that the core sample will be released in this manner before retraction. After the core sample, with bit, is separated from the arm, the release suggests they will lift the arm away to inspect the drilling process, then return the arm to retract the core sample for storage. This does make some sense, though grabbing that sample again will be quite challenging.

If this was not supposed to happen as described, then there is a problem that must be resolved. I expect more details in the next day or so to clarify this situation.

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Click for interactive map.

Cool image time! The photo above, cropped, enhanced, and reduced to post here, was taken on July 5, 2021, about thirty seconds after Ingenuity had taken off on its 9th flight on Mars. I have increased the contrast slightly to bring out the features. This is a raw image, so I do not think the colors are accurate, and I also do not know why the middle of the image is brighter than the edges.

The red lines on the map to the right indicates the general area this image captures. Essentially, once the helicopter reached its flying altitude after liftoff the engineers had it tilt so that it could see the route it was about to take to the southwest. As they noted in their description of this flight,

We began by dipping into what looks like a heavily eroded crater, then continued to descend over sloped and undulating terrain before climbing again to emerge on a flat plain to the southwest.

I think that crater is visible on the left edge of this picture.

So far 180 raw images from Ingenuity have arrived at JPL. There might be a few more, but I think this is the bulk from the flight. Of these, all but nine are black and white and point straight down. The nine color images seem tilted up towards the horizon to various degrees, though the image above is the only one that captures the horizon itself and the distance mountains of Jezero Crater’s rim.