Tag: engineering

A Martian ship’s prow

2:50 pm

A Martian ship's prow
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was taken on August 31, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists call “layering” surrounding this pointed mesa, which I roughly estimate to be somewhere between 200 to 400 feet high.

As you approach the mesa you first walk on the dust-covered flat plains. Then you start up a slope of what looks like alluvial fill, material that over time has fallen from the mesa to pile up as an apron at its base. You then reach a series of terraces, each likely marking a different layering major event from sometime in the distance past. Over time, for unknown reasons, the material surrounding this material has eroded away, while the mesa and its layers somehow survived.

The overview map below helps tell us what those past layering events were, as well as the source of the large amount of dust and sand at this location.
» Read more

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Blue Origin-led team bids for NASA manned lunar lander contract

11:09 am

Capitalism in space: Though few details have been released, Blue Origin has teamed up with Boeing and Lockheed Martin to bid for a NASA contract to build a second manned lunar lander, after SpaceX’s Starship.

Blue Origin revealed its team’s submission to that second NASA program in a brief statement posted on its website on Tuesday, saying “in partnership with NASA, this team will achieve sustained presence on the Moon.”

The deadline for proposals was Tuesday. NASA is expected to make an award decision in June 2023.

Blue Origin’s team also includes spacecraft software firm Draper, Pittsburgh, Pennsylvania-based Astrobotic and Honeybee Robotics, a manufacturer of military and civil robotic systems that was acquired by Blue Origin in January.

It will be interesting to see if this proposed lander is significantly different than the previous proposal, which NASA considered overpriced and not as capable as Starship.

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Virgin Orbit schedules launch from the UK, despite no permit

11:01 am

Virgin Orbit has now scheduled its first launch from a Cornwall airport for December 14, 2022, even though the company has not been issued its launch permit from the Civil Aviation Authority (CAA) of the United Kingdom, even after almost six months of delays.

Spaceport Cornwall was awarded an operators licence by the Civil Aviation Authority (CAA) last month, meaning the site is licensed for launch operations.

However, Virgin Orbit as the operator needs both launch and range licences from the CAA before the historic launch can happen. Spaceport Cornwall told MailOnline that December 14 is when the window opens for the first launch attempt – although this is ‘by no means a guaranteed flight date’.

According to a BBC report, that license has still not been issued. I suspect Virgin Orbit has set this date to pressure the CAA to finally get its act together and issue the permit.

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Ingenuity sets altitude record on 35th flight

10:33 am

Overview map
Click for interactive map.

On December 3, 2022 Ingenuity completed its 35th flight, traveling about 49 feet sideways but reaching a new altitude record for the Mars helicopter of 46 feet.

The map to the right shows the helicopter’s new position by the green dot, with Perseverance’s present position shown with the blue dot. The helicopter only moved slightly to the northwest of its previous position.

The plan had been to test the helicopter’s upgraded software at this new altitude while flying fly 50 feet sideways for 52 seconds at a speed of 6.7 feet per second. The flight met these goals almost exactly, going a distance only slightly shorter, well within its margin of error. The new altitude record however is significant, as going even slight distances higher in Mars’ very thin atmosphere (1/1000th of Earth’s) is challenging, to say the least. This higher flight means Ingenuity can fly up above higher terrain, such as the delta that is Perseverance’s next goal.

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InSight’s low power levels holding steady

10:11 am

InSight's power levels as of November 29, 2022

The science team for the Mars’ lander InSight today (December 6th) released a new update (dated November 29th) of the power levels being produced by its dust-covered solar panels.

As of Nov. 29, 2022, InSight is generating an average between 290 watt-hours of energy per Martian day, or sol. The tau, or level of dust cover in the atmosphere, was estimated at .95 (typical tau levels outside of dust season range from 0.6-0.7).

I have added this new data unto the graph to the right, though I am puzzled by the date given to the update. Why post this today, when this update covers data only two days after the previous update (November 27th), and is more than a week out of date? This is especially puzzling because the numbers did not change at all.

Nonetheless, the lander is still alive, but barely. One wonders however what happened in the past week, since today’s update does not bring us up to date.

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Martian dunes, as far as the eye can see

11:21 am

Martian dunes
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was taken on July 14, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows the dune filled floor of an unnamed 25-mile-wide ancient and very eroded Martian crater.

These endless dunes — which extend far beyond this photo to cover the entire floor of this crater as well as an overlapping crater to the north that is only slightly smaller — reveal something fundamental about this location: The winds prevail from one direction consistently, from either the north or the south. Closer inspection would likely resolve which way, but I don’t have the knowledge or access to the data to do so.

The overview map below, provides context, and also further information about why these dunes are here.
» Read more

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The Middle East in Space

9:21 am

A space conference taking place this week in the United Arab Emirates has produced a number of somewhat intriguing stories, some indicating the growing the new colonial movement in space, and some marking the significant changes produced by the Abraham Accords, peace treaties negotiated and signed during the Trump administration between Israel and a number of Arab nations.

For example, Israel’s president, Isaac Herzog, was invited to the conference to give a keynote speech, and he did so as part of a tour of several Arab countries, all of whom were Israel’s sworn enemies prior to the Abraham Accords.

In his address, Herzog touted Israel’s warming ties with Bahrain and the Emirates since the signing of the Abraham Accords in 2020, and predicted a leap forward in space exploration. “I am very happy to be here and take part in this timely debate, under the auspices of my dear friend, President Mohammed bin Zayed. I have just arrived from Bahrain with my wife, Michal, where we conducted the first State Visit of an Israeli president in the Kingdom of Bahrain, and I am extremely grateful to His Majesty the King of Bahrain, Hamad bin Isa Al Khalifa.”

It appears that, even though the Biden administration has done little to promote further Abraham Accord agreements, many powerful Arab nations of the Middle East are embracing these deals regardless, and thus the tensions in that war-torn region have been largely reduced as a result. Israel still has enemies there, but it now appears to have, at a minimum, neutral partners willing to peacefully work with it.

The conference has also produced additional space news from other Middle East countries.
» Read more

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Ukrainian rocket startup targets ’23 for first launch

8:57 am

The new colonial movement: A Ukrainian rocket startup, Promin Aerospace, now expects to complete the first suborbital launch of a test rocket in 2023, despite the Russian invasion and its regular bombing the city of Dnipro, where the company is based.

On Feb. 22, two days before the Russian invasion, Rudominski sent the first batch of emails seeking seed investment. When the war started, Promin executives realized their investment plans would need to be put on hold while their focus shifted to the safety of employees, families and friends, plus support for Ukrainian defense and humanitarian relief efforts.

By early April, most employees were back working full time.

The company does not reveal its location out of fear of further Russian bombing.

As for its planned rocket launch, though it wishes to do the test from the Ukraine, it also has a deal with one of the new spaceports in Scotland and could launch from there if necessary.

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Orion completes burn to send spacecraft back to Earth

8:50 am

NASA’s Orion capsule yesterday successfully fired its engines as it zipped past the Moon to send it on a trajectory back to Earth, with splashdown in the Pacific off the coast of California scheduled for December 11, 2022.

Not all was hunky-dory, however. Prior to the burn a power unit shut down unexpectedly.

A power unit on board the Orion spacecraft turned off four devices “responsible for downstream power” that connect to the Artemis 1 vehicle’s propulsion and heating subsystems, NASA officials wrote in a statement. But mission personnel swiftly put a fix in place and the mission is carrying on, the statement emphasized. “Teams confirmed the system was healthy and successfully repowered the downstream components,” agency officials wrote in the statement, released late on Sunday. “There was no interruption of power to any critical systems, and there were no adverse effects to Orion’s navigation or communication.”

Engineers think the shut down was related to a test performed in connection with an earlier incident.

Regardless, all now appears well for that December 11nd splashdown.

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The steep interior rim of Aristarchus Crater

11:30 am

Aristarchus Crater
Click for larger image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, is a just released image taken by Lunar Reconnaissance Orbiter, looking across the top of Aristarchus Crater on the Moon from a height of only 60 miles, with the dark surrounding plateau in the foreground contrasting sharply with the bright crater interior. For scale, the distance from the floor of the crater to the top of the rim is about 9,000 feet. The bright central peak is about 1,300 feet tall. The contrast in brightness inside and outside the crater is explained thus:

Adjacent to Aristarchus crater is the Aristarchus plateau, one of the largest volcanic centers on the Moon. Here we find one of the largest rilles [on the Moon, dubbed Vallis Schröteri], a massive pyroclastic deposit, and the source of extensive flood basalts.

These volcanic materials are considered relatively young (for the Moon) – 1.5 to 2.5 billion years. The pyroclastic deposit formed when magma was explosively ejected from the vent and broke into small droplets quenched as glass in the cold vacuum of space as they fell back to the surface. Due to their high glass content, the pyroclastic deposits are distinctly low in albedo (relatively dark), providing a dark background for the bright Aristarchus crater. Within the crater, some of these pyroclastic deposits may be visible as the darkest areas on the far wall, and glassy impact melt is moderately lower in reflectance than the bright, rocky materials exposed on areas of the crater floor and walls.

The overview map below shows both the crater and the vent from which Vallis Schröteri belched.
» Read more

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Curiosity’s recent and future travels amid the Martian mountains

11:09 am

Curiosity's recent and future travels on Mars
Click for full panorama.

Overview map
Click for interactive map.

The panorama above, created from 31 images taken by Curiosity’s right navigation camera on December 5, 2022, provides us a wonderful overview of the rover’s recent and future travels amid the lower foothills of Mount Sharp in Gale Crater.

The overview map to the right provides context. The blue dot indicates Curiosity’s present position. The yellow lines indicate the approximate area viewed by the panorama. The red dotted line indicates Curiosity’s planned route, with the white dots the route it has actually traveled. On the panorama, the pink dotted line indicates where it has been, and the red dotted line where it is going.

For scale, Kukenan is estimated to be about 1,500 feet high. Though Chenapua in front seems comparable, it is actually much smaller, only about 200 to 300 feet high, at the most. Orinoco, though lower on the mountain, is probably about 300 to 400 feet high.

To really see the magnificence of this terrain, you must click on the panorama and explore the full image. Curiosity is truly traveling amid mountains, and is the first human robot to do so on another world.

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The uncertainties surrounding India’s proposed first manned mission

10:00 am

Link here. The article does a nice job of outlining the program, dubbed Gaganyaan, as well as the many issues that has caused the first launch to be delayed more than three years.

The key quote however is this:

Despite the government claiming that there would be no delays due to Covid, the first uncrewed flight was rescheduled from 2020 to 2021 and then again to 2022. The dates were once again revised to late 2023 or early 2024, announced Union minister of state for science and technology Jitendra Singh in September this year. [emphasis mine]

The highlighted claim is quite amusing, considering how India’s government space agency ISRO shut down entirely because of the Wuhan panic for more than two years, and remains somewhat dormant even now. As a result of that panic, ISRO lost almost its entire commercial market to American companies.

Read the entire article. It summarizes the state of Gaganyaan in good detail, which also implies that a first launch in ’24 remains questionable.

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