Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Ingenuity flies!

8:53 am

Ingenuity takes off!
For full images go here and here.

The first autonomous flight of the helicopter Ingenuity on Mars successfully took place early this morning, according to JPL engineers.

NASA has pulled off the first powered flight on another world. Ingenuity, the robot rotorcraft that is part of the agency’s Perseverance mission, lifted off from the surface of Mars on 19 April, in a 40-second flight that is a landmark in interplanetary aviation. “We can now say that human beings have flown a rotorcraft on another planet,” says MiMi Aung, the project’s lead engineer at the Jet Propulsion Laboratory (JPL) in Pasadena, California.

As shown by the two images taken by Perseverance above, the first flight was very simple. The helicopter simply rose about 10 feet, hovered for about 30 seconds as it swiveled 90 degrees, and then carefully descended back down. I have also embedded the video that JPL scientists have created compiling by high resolution Perseverance images below the fold.

Four more flights will next be attempted in the coming weeks.

Four further flights, each lasting up to 90 seconds, are planned in the coming weeks. In these, Ingenuity is likely to rise up to 5 metres [16 feet] above the surface and travel up to 300 metres [1000 feet] from the take-off point. Each successive flight will push Ingenuity’s capabilities to see how well the drone fares in Mars’s thin atmosphere, which is just 1% as dense as Earth’s.

» Read more

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The rovers’ view of Mars

9:10 am

The view from the top of Mont Mercou
Click for higher resolution. For original images, go here and here.

Some cool images to savor from Mars! Above is a panorama from Curiosity, created by me from two images taken by the rover’s left navigation camera today, April 18, 2021. The view is southwest towards the canyon regions where Curiosity will be heading in the coming months. Note the roughness of the ground. Travel is going to be tricky from here on out.

The photo was taken from the top of Mont Mercou, the 20-foot high outcrop that the rover spent several weeks studying at the cliff’s base. The Curiosity science team is presently preparing to drill into the bedrock at the top.

Ingenuity on the floor of Jezero Crater
Click for full image.

The photo to the right, reduced to post here, was taken by Perseverance on April 13, 2021, and looks west across the floor of Jezero crater. The high mountains in the distance are the crater’s rim. The low and much closer hill is the delta that is the rover’s primary geological target.

In the center of the picture is the helicopter Ingenuity. You can also see the tracks of Perseverance’s wheels just below it.

This will be the rover’s vantage point when Ingenuity attempts its first test flight in the early morning hours of April 19, 2021. The helicopter will head to the right once it lifts off.

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Ingenuity first test flight scheduled for 3:30 am (Eastern) tonight!

8:16 am

The engineering team for the Ingenuity helicopter on Mars have decided to attempt the first test flight tonight, scheduled for 3:30 am (Eastern) in the early morning hours tomorrow.

Data from the first flight will return to Earth a few hours [later] following the autonomous flight. A livestream will begin at 6:15 a.m. EDT (3:15 a.m. PDT) as the helicopter team prepares to receive the data downlink in the Space Flight Operations Facility at NASA’s Jet Propulsion Laboratory (JPL).

NASA propaganda will begin on NASA TV at 3:30 am (Eastern), but the actual live stream of the flight will not air until about 6:30 am (Eastern) on April 19th.

At the first link above the engineers explain their decision to proceed immediately.
» Read more

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Russia hands over last rocket engines to ULA

9:20 am

In a ceremony in Russia yesterday, Roscosmos’s Energomash division completed and handed over ownership to ULA six RD-180 engines, to be used in ULA’s Atlas 5 rocket.

These are the last such engines required as part of the contract. They will also likely be the last Russian engines ULA will ever buy. The company is retiring its Atlas 5 rocket, which requires them, and replacing it with its Vulcan rocket, which will instead use Blue Origin’s BE-4 engine.

Furthermore, as of September 1st, 2021 such commercial space contracts with Russia will be difficult to obtain because of new sanctions imposed on Russia by the Biden administration.

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Ingenuity successfully completes rapid spin test

9:00 am

Ingenuity’s engineers announced this morning that yesterday the helicopter on Mars was able to successfully complete a rapid spin test of its rotary blades.

Today, April 16, on the 154th anniversary of Wilbur Wright’s birth, the Ingenuity flight team received information that the helicopter was able to complete a rapid spin test. The completion of the full-speed spin is an important milestone on the path to flight as the team continues to work on the command sequence issue identified on Sol 49 (April 9).

…The approach that led to today’s successful spin test entailed adding a few commands to the flight sequence. This approach was tested extensively on both Earth and Mars, and was performed without jeopardizing the safety of the helicopter.

They have still not set a date for flight, because they might still decide, after they have analyzed fully the results from this test, to revise the helicopter’s software and upload that change. If not the flight will be relatively soon. If so there will be a longer delay to test that software fully before flight.

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Today’s blacklisted American: Professor fired without due process for lamenting the poor education often received by blacks

10:58 am

Today's modern witch hunt
Burning witches in academia: It’s the IN thing.

They’re coming for you next: Sandra Sellers, a law professor at Georgetown University Law Center in Virginia was immediately fired by her dean without any investigation, based on an intentional false misreading of of her words said during what she thought was a private Zoom phone conversation.

Last month, Georgetown Law adjunct professor Sandra Sellers told a colleague privately on Zoom, “I hate to say this—I end up having this angst every semester that a lot of my lower [graded] ones are blacks.” Some black students, Sellers said, did well, but the overall pattern made her “feel bad.”

Sellers was not aware that her conversation was being recorded and uploaded to the aptly named “Panopto” software system. If someone had chosen to, he might have clipped her words and posted them to Twitter with the caption: “We need more white professors like this, who feel shame about how badly law schools are failing students of color. Thank you, Professor Sellers!” Instead, Sellers’ words were clipped and posted by Georgetown Law student Hassan Ahmad with the caption: “.@GeorgetownLaw negotiations professors Sandra Sellers and David Batson being openly racist on a recorded Zoom call. Beyond unacceptable.”

That day, without speaking with Sellers, William Treanor condemned her “reprehensible statements,” which he declared “abhorrent.” The next day, against his own university’s policies, Treanor fired Sellers without an official investigation.

Treanor also suspended without investigation David Batson, the law professor whom Sellers was speaking to.

The moral and legal violations here were not committed by Sellers by her words, since she was simply expressing a concern for her minority students and her frustration that she had not been able to figure out a way to help them do better. No, let me list the real violators to truth and justice:
» Read more

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InSight pauses science operations to conserve power

8:41 am

The science team for the InSight lander on Mars have been forced to suspend science operations because dust on the solar panels is reducing the available power.

InSight’s solar panels were producing just 27% of their energy capacity in February, when winter was arriving in Elysium Planitia. So NASA decided to start incrementally turning off different instruments on the lander. Soon the robot will go into “hibernation mode,” shutting down all functions that aren’t necessary for its survival.

By pausing its scientific operations, the lander should be able to save enough power to keep its systems warm through the frigid Martian nights, when temperatures can drop to negative-130 degrees Fahrenheit. “The amount of power available over the next few months will really be driven by the weather,” Chuck Scott, InSight’s project manager, said in a statement.

InSight is still in good condition – it’s even using its robotic arm – but the risk of a potentially fatal power failure is ever-present. If the lander’s batteries die, it might never recover.

As with the rovers Spirit and Opportunity, InSight engineers have depended on periodic strong wind events to periodically clean off the solar panels. Unfortunately, these events are somewhat random, and for the past few months none have occurred.

Note: the article at the link says that winter was arriving at InSight’s location in February, but this is incorrect. InSight sits at about 4 degrees north latitude. In February the end of winter was approaching in the northern hemisphere. More to the point, sitting at the equator you wouldn’t really expect InSight to experience much seasonal changes regardless.

It therefore seems that these issues had less to do with the seasons and much more to do with the accumulating dust on the panels.

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New OSIRIS-REx photos of Bennu sample site after sample grab

1:40 pm

Nightingale before and after sample grab
Click here and here for original images.

The OSIRIS-REx science team today released the photos the spacecraft obtained in its last fly-by of the asteroid Bennu on April 7th of the Nightngale sample site, showing how it changed after the sample grab in October 2020.

The two photos to the right compare that site, with the top image taken before the sample grab and the bottom image taken on April 7th.

Comparing the two images reveals obvious signs of surface disturbance. At the sample collection point, there appears to be a depression, with several large boulders evident at the bottom, suggesting that they were exposed by sampling. There is a noticeable increase in the amount of highly reflective material near the TAG [touch-and-go] point against the generally dark background of the surface, and many rocks were moved around.

Where thrusters fired against the surface, substantial mass movement is apparent. Multiple sub-meter boulders were mobilized by the plumes into a campfire ring–like shape — similar to rings of boulders seen around small craters pocking the surface.

Jason Dworkin, the mission’s project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, noticed that one boulder measuring 4 feet (1.25 meters) across on the edge of the sampling site seemed to appear only in the post-TAG image. “The rock probably weighs around a ton, with a mass somewhere between a cow and a car.”

Dante Lauretta, of the University of Arizona and the mission’s principal investigator, later pointed out that this boulder is likely one of those present in the pre-TAG image, but much nearer the sampling location, and estimates it was thrown a distance of 40 feet (about 12 meters) by the sample collection event.

The sample grab arm penetrated the surface by more than a foot, and that event is marked by that dark depression at the center of the site.

OSIRIS-REX will now prepare for its May 10th engine firing that will send it on its route back to Earth to return that sample in September 24, 2023. After that the spacecraft could be sent on another mission, this time to the potentially dangerous asteroid Apophis.

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Today’s blacklisted American: A movie about the dark side of Planned Parenthood

12:09 pm

Today's modern witch hunt
Burning witches: What Hollywood now routinely tries
to do to conservatives.

Blacklists are back and Hollywood’s got ’em: When long time Hollywood filmmakers Cary Solomon and Chuck Konzelman decided to make the film Unplanned, telling the story of a woman who went from being Planned Parenthood clinic director supporting abortion to an avid advocate for the unborn, they did so under assumed names, and discovered themselves fighting an aggressive effort both in Hollywood and in social media to suppress the film once released.

Multiple cable networks, such as Lifetime, Hallmark Channel, HGTV, USA Network, Food Network, The Travel Channel, refused to carry commercials promoting the film. Multiple theater owners received death threats and harassment prior to screenings, with a few cancelling the screenings out of fear for themselves and their families.

And then there was the usual Twitter censorship.
» Read more

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Sierra Nevada to make its space operations a separate company

10:01 am

Capitalism in space: Sierra Nevada has decided to spin off its space operations involving Dream Chaser and its proposed private space station into a separate company called Sierra Space.

In a message to employees April 14, SNC [Sierra Nevada] Chairwoman and President Eren Ozmen said the company’s Space Systems division will become a standalone company, called Sierra Space, although remain a subsidiary of SNC.

…Ozmen provided few details about how the transition of SNC’s space business to Sierra Space would unfold, but she said it would take several months to complete. Even after the transition, Sierra Space will “continue deep cooperation and synergy” with SNC’s other business areas in aviation and defense.

My guess is that Ozmen does not want the risks of its space-related projects to impact its more reliable aviation and defense holdings. By separating it out, she can better isolate the success or failure of each. This does not necessarily mean that the space holdings are failing, only that they carry a greater financial risk.

Sierra Space’s future strongly hinges on the success of the first Dream Chaser cargo shuttle, Tenacity, whose inaugural flight has been delayed from ’21 to ’22. If that fails, all the other plans of this space division will likely fail as well. If it succeeds however the company’s financial future will be quite promising.

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