SLIM survives its second lunar night, re-establishes contact

9:33 am

SLIM's view after surviving its 2nd night on the Moon
Click for original image.

According to Japan’s space agency JAXA, the SLIM lunar lander has successfully survived its long night on the Moon, re-establishiing contact with ground controllers yesterday.

Last night, we received a response from #SLIM, confirming that the spacecraft made it through the lunar night for the second time! Since the sun was still high and the equipment was still hot, we only took some shots of the usual scenery with the navigation camera

One of those pictures is to the right, reduced slightly to post here. It looks west across the floor of Shioli Crater, with the far rim about a thousand feet away. The picture is identical to previous images, tilted because the spacecraft landed on its side and has limited scientific capabilities, being primarily an engineering test mission.

That this engineering test has now survived two lunar nights speaks well for its design. It tells us that future Japanese lunar landers (and rovers) will have a good chance of surviving for a long time on the Moon.

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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

Real Space – Every Space Station Size Comparison

6:01 pm

An evening pause: Some quick visual space station history. Note how almost all the non-U.S. stations are essentially assembled using revisions of the same early Soviet-era modules. Note too how the future private stations are all very different from each other. The contrast illustrates the difference between what you get when governments control everything, and when competition and freedom rule.

Hat tip Edward Thelen.

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March 27, 2024 Quick space links

4:07 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

 

 

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Conscious Choice cover

Now available in hardback and paperback as well as ebook!

 

From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.

 
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.  
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.

 

“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.

 

All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.

 

Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.

Part 3: The expected tantrum of madness should Biden actually lose the election

1:48 pm

The Democratic Party: hostile to freedom and fair elections

For the past two days I have tried to lay out some of the illegal and immoral strategies and tactics of the Democratic Party in its relentless effort to guarantee a win in this year’s presidential election, no matter what. (For the first two parts, go here and here.)

The bottom line is that Democratic Party politicians and their allies in the press and big tech will stop at nothing to prevent Donald Trump from regaining the White House. They will cheat, lie, encourage riots and looting, censor and blacklist their opponents, and in the end, even commit election and voter fraud on a massive scale.

But despite all this, what if Donald Trump still ends up victorious? Right now a rational look at both the polling trends and the disastrous consequences of Joe Biden’s presidency all suggest the American public is screaming for a change. The historic shift in the black and hispanic populations to Trump and away from the Democratic Party underlines these trends quite clearly. These trends are further underlined by the presence of two different moderate-left alternative presidential tickets, both drawing the bulk of their support from the Democrats.

In the end, this data tells us that it is very likely that none of the chaos and violence and fear-mongering and vote tampering by the Democrats will work, that in the end Donald Trump will emerge as the winner.

How will this now very close-minded and very vicious Democratic Party respond when that happens? The signs tell us that they can no longer tolerate defeat, or even the existence of alternative parties. (For example, consider the relentless effort by the Democrats to legally squelch these alternative parties from the ballot box.) For them, “democracy” only exists when they win.

We should therefore expect these terrible things to happen in short order after election day.
» Read more

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Scientists release detailed geological map of the landing site for Europe’s Franklin rover

10:01 am

Low resolution cropped section of map
Click for original image.

Scientists today released a new high resolution and very detailed geological map of the landing site for Europe’s Franklin rover, produced using orbital data from the U.S.’S Mars Reconnaissance Orbiter and Europe’s Trace Gas Orbiter.

A very low resolution version of the map is to the right.

The work was divided into 134 one-square-kilometre areas, so that the [80-person] team could fully cover the estimated landing area. Scientists used a web-based system that allowed everyone to work on the map in parallel. The software was provided by NASA’s Jet Propulsion Laboratory and set up at ESA [European Space Agency]. Data came from the Colour and Stereo Surface Imaging System (CaSSIS) onboard the ExoMars Trace Gas Orbiter and several instruments on NASA’s Mars Reconnaissance Orbiter (MRO), including the HiRISE camera, which returns images from Mars orbit at 25 cm per pixel.

The mapping leads then pieced together the information on all the areas to form a coherent map that shows the geology of the landing site in unprecedented detail. The map includes the main types of bedrock, and structures with distinct shapes like ridges and craters. It even features the material that rests on top, for example blown by the wind, or thrown long distances when meteorites impacted the surface.

The result is the highest resolution map of Oxia Planum yet, created at a scale of 1:25 000, by which every centimetre equals 250 metres on the martian surface. An average drive of 25 to 50 metres a day for Rosalind Franklin would be one to two milimetres on the map.

The team had the extra time to compile this map because the launch of Franklin to Mars was delayed a number of times because of engineering issues and the Ukraine War, which ended the Europe’s partnership with Russia, requiring ESA to find other means to launch and land the rover.

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Leaving Earth cover

Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.

 

If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.

 

Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.

 
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke

Data from Perseverance suggests the delta in Jezero Crater was formed by a wide variety of different “fluvial” events

9:43 am

Jezero Crater delta
Jezero Crater delta

Using data from the Perseverance rover in Jezero crater, scientists now conclude that the delta that poured through a gap in the crater’s rim was formed by a wide variety of different “fluvial” events, not a steady flow as previously assumed.

From the paper’s conclusions:

The origin of this variability as well as that of the high discharge represented by the boulder conglomerate is still unknown. Realistic hypotheses include seasonal variations due to melting of snow, glacial input with possible episodic surges punctuating more regular fluvial input, or arid climate type of flows with intense storms and related flash floods.

We do not speculate further about the nature of fluvial activity in this study. However, the variability and the presence of high discharge rates have important implications on the lake evolution. Firstly, previous modeling of Jezero delta formation used steady-state discharge rates to estimate the time required to form the delta, an assumption that we can no longer justify according to our observations. Secondly, estimates of discharge rates … may be used as upper limits for some of the peak discharge rates, although the number of flood events is still difficult to determine from the sparse outcrops and the ubiquitous presence of scree.

In other words, the delta was not formed by a single event or a long stream of liquid flowing into the crater to form the lake that scientists believe once filled the crater. Instead, that flow varied, involved numerous distinct and different events over time, and likely included glacial ice transport as well.

Not that this is a surprise, but as always, the closer we get to a planet and the more detailed our data about it, the more complicated we find its nature and origins.

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Members of Texas Space Commission unveiled

9:27 am

The governor of Texas, Greg Abbott, yesterday revealed the names of the 18 individuals who will head the Texas Space Commission, created by the legislature to encourage the development of that state’s commercial space industry.

The Texas Space Commission will be tasked with developing a statewide strategy that promotes innovation, creates incentives (including grant funding) and develops workforce training. They initially have $350 million to work with, $150 million budgeted for grants and $200 million for a new research and training facility built by the Texas A&M University System.

The Texas Aerospace Research and Space Economy Consortium, which is part of the Texas Space Commission, will identify research and development opportunities and find ways to further integrate space into the Texas economy.

The commission appears strongly made up of representatives from many commercial companies, including the big companies SpaceX, Lockheed Martin, and Boeing as well as a number of newer smaller companies. Linked as it is so closely with the state government, this commission will be well placed to eliminate any obstacles within the state to commercial development.

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The spiraling magnetic field surrounding the Milky Way’s central supermassive black hole

9:19 am

The magnetic field lines surrounding Sagittarius A*
Click for original image.

Astronomers have now produced the first detailed image of polarized light surrounding the Milky Way’s central supermassive black hole, dubbed Sagittarius A* (pronounced “Sagittarius A-star”) which in turn maps out the spiraling field lines of that black hole’s magnetic field.

The image to the right, reduced to post here, shows that image. From the press release:

“What we’re seeing now is that there are strong, twisted, and organized magnetic fields near the black hole at the center of the Milky Way galaxy,” said Sara Issaoun, CfA NASA Hubble Fellowship Program Einstein Fellow, Smithsonian Astrophysical Observatory (SAO) astrophysicist, and co-lead of the project. “Along with Sgr A* having a strikingly similar polarization structure to that seen in the much larger and more powerful M87* black hole, we’ve learned that strong and ordered magnetic fields are critical to how black holes interact with the gas and matter around them.”

Light is an oscillating, or moving, electromagnetic wave that allows us to see objects. Sometimes, light oscillates in a preferred orientation, and we call it “polarized.” Although polarized light surrounds us, to human eyes it is indistinguishable from “normal” light. In the plasma around these black holes, particles whirling around magnetic field lines impart a polarization pattern perpendicular to the field. This allows astronomers to see in increasingly vivid detail what’s happening in black hole regions and map their magnetic field lines.

Despite this similarlity, it still remains a mystery why the much larger M87 black hole is very active while Sagittarius A’ remains generally quiet.

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Engineers resolve issue on IXPE space telescope

9:01 am

Engineers have resolved the issue on the IXPE (Imaging X-ray Polarimetry Explorer) space telescope that was jumbling the data it was sending to Earth, and expect to return it to full science operations shortly.

On March 26, using procedures developed following that previous interruption, the team initiated a spacecraft avionics reset to address the issue, which put IXPE into a planned safe mode. The team has confirmed that IXPE is once again transmitting valid telemetry data and is now working to resume science operations, in as rapid and safe a manner as possible. The spacecraft is in good health.

The “previous interruption” was in 2023. In both cases it appears that simply rebooting the telescope’s software fixed the problem.

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China’s Long March 6 rocket launches remote sensing satellite

8:51 am

China yesterday successfully launched a classified remote sensing satellite, its Long March 6 rocket lifting off from its Taiyuan spaceport in the northeast of China.

No word on where the rocket’s four solid-fueled strap-on boosters and liquid-fueld core stage crashed inside China.

The leaders in the 2024 launch race:

30 SpaceX
13 China
4 Rocket Lab
4 Russia

American private enterprise still leads the rest of the world combined in successful launches 35 to 23, while SpaceX still leads the entire world, including American companies, 30 to 28.

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March 26, 2024 Quick space links

3:30 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

 

 

 

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Part 2: A further list of upcoming Democratic Party election chaos

2:21 pm

The Democratic Party: hostile to freedom and fair elections

In part one of this series yesterday I outlined one Democratic Party scenario for stealing a Trump election victory, based on the possibility that they might regain control of both Houses of Congress this year due to Republican resignations, and use that power to interfere with the election result as a lame duck Congress.

To do this however will require some groundwork. Today I will to outline several of the far more likely tactics the Democratic Party will use in the coming months, before, during, and after the election, to make the first scenario above more doable, should it be necessary due to a Trump victory. These tactics are also intended to use fear and violence to supress the Republican vote while energizing Democrats.
» Read more

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Bursting bubbles of water gas on Mars

12:41 pm

Bursting bubbles on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and enhanced to post here, was taken on January 12, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Because of a technical issue that leaves a blank strip down the center of recent high-res MRO images, I have filled in that gap using a MRO context camera photo taken on January 12, 2015. The resolution is much less, but by doing so we can see the ground features as a unit.

What are we looking at? According to the scientists, this picture shows “fresh-looking ruptures,” referring to the broken line of sharp tears inside that meandering canyon that almost resemble a fresh wound in flesh. As this location is at 28 degrees south latitude, it lies on the edge of dry equatorial regions, where orbital images have sometimes found hints of a few remaining buried glaciers that are much more common closer to the poles.

In this case it appears the warmer equatorial climate has acted to heat up the buried ice so that it sublimated into gas. At some point the gas pressure caused the surface to burst, much like bubbles bursting on the surface of a pot of simmering tomato sauce, leaving behind these scars.
» Read more

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Report: 3D printing in space

10:44 am

A new report released today [pdf] from the space think tank Intro-act provides a nice detailed summary of the economic and technological state of 3D printing industry in space.

The report first outlines the types of 3D printing presently available, using plastics and metals, and then outlines the advantages of printing things in orbit rather than carrying them up from Earth. Essentially, 3D printers are the real version of replicators seen in sci-fi movies, except that reality requires much more complexity, including a whole range of different machines designed for specific materials and final products.

The report lists four companies of note:

Made in Space (acquired by Redwire Corp.), Relativity Space, and AI SpaceFactory are the leading companies in the 3-D printing segment. With the addition of Vaya Space, the list provides a more comprehensive overview of the companies that are pioneering the use of 3-D printing technology in the realm of space exploration and development, showcasing the diverse applications and innovative strategies being employed in this exciting field.

Each company appears to have a different focus. Redwire is developing 3D printers for use on ISS, Relativity developing 3D printers for building rocket components, and AI Spacefactory developing 3D printed space colonies for Mars or the Moon.

If I had to choose which company to bet on, my pick would be Relativity followed by Redwire. The former’s large 3D printing technology for rockets can be very easily shifted to other uses and products, giving it a product of great value far beyond space. Redwire meanwhile has already launched and operated printers on ISS, proving it can provide that technology to future space stations.

This industry is however in its infancy. As the private space stations presently under construction launch, their need for this technology will skyrocket, and thus there will be opportunities galore.

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Orbital tug startup ExLabs plans mission to asteroid Apophis in 2028

9:03 am

The orbital tug startup Exploration Labs (ExLabs) has announced it is planning to use its tug to deliver three cubesats on a rendezvous mission to asteroid Apophis in 2028, shortly before the asteroid does a close fly-by of Earth in April 2029.

The article at the link provides no other information about this mission. In searching the web I was unable to find anything further. It seems this mission is at present nothing more than a proposal, issued at this time mostly for public relations purposes to showcase the abilities of its proposed orbital tug, presently under development.

This conclusion does not mean the mission won’t happen, only that it is very far from a reality.

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Intuitive Machines: Odysseus is dead

8:53 am

In a tweet on March 23, 2024 the company Intuitive Machines announced that the mission of its first lunar lander, Odysseus, is officially over with the spacecraft failing to come back to life after sunrise on the Moon.

As of March 23rd at 1030 A.M. Central Standard Time, flight controllers decided their projections were correct, and Odie’s power system would not complete another call home.

The engineers had begun listening for a signal on March 20th, when their computer models said enough sunlight would reach the solar panels to charge its communications system.

The failure of the lander to survive the lunar night is a disappointment, but it was never considered a strong possibility. Right now the company’s main task is to prevent the issues that caused Odysseus to land too fast and tip over, so that the next two missions, scheduled for either this year or next, each deliver their payloads properly on the Moon’s surface.

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SpaceX launches 23 more Starlink satellites

10:02 pm

The beat goes on and on and on and… SpaceX today successfully launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Caneveral.

The first stage completed its eighth flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

30 SpaceX
12 China
4 Rocket Lab
4 Russia

American private enterprise now leads the rest of the world combined in successful launches 35 to 22, while SpaceX now leads the entire world, including American companies, 30 to 27.

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March 25, 2024 Quick space links

5:51 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

 

 

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Pushback: Smithsonian to pay Catholic students $50K and publicly apologize for ejecting them from Air & Space for wearing pro-life hats

5:25 pm

The evil hat that Air & Space banned
The evil hat that Air & Space officials banned

Bring a gun to a knife fight: The Smithsonian has agreed to pay twelve Catholic students $50K and publicly apologize to them for ejecting them from the Air & Space museum last January because they were wearing pro-life hats.

That hat is to the right. Though many others were wearing t-shirts and hats with other political statements, museum officials singled these students out for harassment and ejection. According to their lawyer,

Once in the museum, they were accosted several times and told they would be forced to leave unless they removed their pro-life hats. The group all wore the same blue hat that simply said, “Rosary PRO-LIFE.” Other individuals in the museum were wearing hats of all kinds without issue.

The museum staff mocked the students, called them expletives, and made comments that the museum was a “neutral zone” where they could not express such statements. The employee who ultimately forced the students to leave the museum was rubbing his hands together in glee as they exited the building.

According to the settlement deal [pdf]:
» Read more

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Part 1: The expected upcoming election chaos caused by the left’s hatred of any opposition

4:33 pm

The Democratic Party: hostile to freedom and fair elections

The kerfuffle this week at MSNBC because NBC had hired former Republican National Committee (RNC) chairwoman Ronna McDaniel is important not because of what eventually happened (MSNBC quickly announced McDaniel was banned though she would still appear on NBC), but by what it reveals of the left’s political class.

Democrat politicians everywhere, both pretending to be journalists at MSNBC as well as within the leaders of the Democratic Party, complained that it was unacceptable to hire a former Republican Party leader, simply because she had dared express opinions and conclusions they disagreed with.

“The free and independent press is fundamental to our democracy and has and continues to face unprecedented attacks by Donald Trump and his lackeys – including Ronna McDaniel – to chip away at its credibility and allow space for MAGA lies and deceit,” Democratic National Committee Chairman Jaime Harrison fumed in a statement. “There should be no debate about the truth in our political discourse. Ronna McDaniel is a proven liar, and has no place in an honest and objective conversation about the future of this country.”

Gee, I don’t remember anyone complaining when NBC hired Chuck Todd, who hosted fund-raising events for Hillary Clinton and whose wife is a major leftist strategist who did campaign work for Bernie Sanders. Nor did anyone complain when ABC hired George Stephanopoulos, a longtime Democratic Party campaign worker who was a major player in Bill Clinton’s campaign. Nor did any of these so-called journalists complain about these hires:
» Read more

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France to award four rocket startups launch contracts worth as much as 400 million euros

11:41 am

Capitalism in space: According to a story today at the European Spaceflight website, the French government will later this week announce contract awards to four different rocket startups worth as much as 400 million euros.

The four launch startups that will receive a combined €400 million in subsidies are HyPrSpace, Latitude, Sirius Space Services, and the ArianeGroup subsidiary MaiaSpace.

The HyPrSpace OB-1 and Latitude Zephyr rockets will be the smallest of the lot and will be capable of delivering between 100 and 200 kilograms to low Earth orbit. The Sirius 1, Sirius 13, and Sirius 15 rockets will be capable of delivering between 175 and 1,100 kilograms to orbit. The Prometheus-powered Maia rocket is expected to be the most powerful, with a payload capacity of up to three tonnes when launched in its expendable configuration.

All four companies however will only receive a small upfront payment, with the bulk of the award only paid if a company achieves a maiden launch by 2028.

That the French government is now signing deals with new private and independent launch companies and not with Arianespace, the commercial arm of the European Space Agency (ESA) that has always been dominated by the French, is a major development. Up until now most of the action encouraging independent rocket companies has come from Germany and Spain. That France has now joined the party signals the almost certain death knell to the failed two decade-long effort by Arianespace to make a profit, even when it controlled about 50% of the launch market.

Expect the government monopoly of Arianespace to fade away in the next five years. Expect it to be replaced with a thriving industry of mulitple rocket companies, all charging less and coming up with new ways to lower cost.

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South Texas booming due to arrival of SpaceX

11:29 am

Link here. The article details the major tourism and industry dollars that have come into existence in the Brownsville region since SpaceX established its Boca Chica launch facility, including major development now underway to cater to the tourist business of travelers eager to get a close look at a Starship/Superheavy launch.

The article gives a sense of the reality on the ground. While the anti-Musk activist groups sue SpaceX in their attempt to shut down Starship/Superheavy development, claiming it is harming the region, stories like this put the lie to those claims.

Hat tip to Robert Pratt of Pratt on Texas.

7 comments

The tangled view of astronomers

11:06 am

A protostar in formation
Click for original image.

The uncertainty of science: The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope as part of a survey of young stars surrounded by an edge-on dust disk. From the caption:

FS Tau is a multi-star system made up of FS Tau A, the bright star-like object near the middle of the image, and FS Tau B (Haro 6-5B), the bright object to the far right that is partially obscured by a dark, vertical lane of dust. The young objects are surrounded by softly illuminated gas and dust of this stellar nursery. The system is only about 2.8 million years old, very young for a star system. Our Sun, by contrast, is about 4.6 billion years old.

The blue lines on either side of that vertical dust lane are jets moving out from FS Tau B. The caption says their asymetrical lengths are likely due to ” mass is being expelled from the object at different rates,” but it just as easily be caused by the angle in which we see this object, making the nearer jet seem longer than the one behind.

That astronomers cannot move around such an object and see it from many angles explains the headline of this post. We can only see astronomical objects from one angle, and when they are complex objects such as this one, a large part of the research problem is disentangling the shapes we see into a coherent picture. Spectroscopy helps a lot, as it provides information about the speed and direction of different parts of the object, but even this can be enormously complicated and difficult to interpret.

Remember these facts when you read news reports about astronomical research. No matter how certain the press release sounds, its certainty is always tempered by many unknowns, some very pedestrian but fundamental.

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UK Space Agency proudly grows

9:27 am

The United Kingdom Space Agency today announced that it is opening four new offices in four different cities, giving it a brand new headquarters as well as a total of five regional offices.

The new HQ at Harwell is due to open in June, while offices at William Morgan House in Cardiff and Space Park Leicester will open in April, with the office at Queen Elizabeth House, in Edinburgh, opening later in the summer.

In addition, the agency will retain its offices in London and Swindon.

Will this expansion alleviate the serious red-tape issues in the United Kingdom that killed Virgin Orbit and have delayed launches at its two new spaceports in Scotland? I have my doubts. The licensing problems in the UK have centered on the number of different agencies and offices that must issue approvals to private space companies. While it might make sense for the UK Space Agency to hire more people, if anything it should be streamlining its operations to one central place.

It appears instead that this bureaucracy is doing what all government bureaucracies do, expanding and growing at the cost of private enterprise. I don’t see how opening many different small offices can possibly help make the licensing procedure faster or easier.

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Boom’s one-third-scale prototype supersonic jet finally takes off

9:05 am

The private startup Boom has finally flown its third-scale prototype supersonic jet, dubbed XB-1, on its first short flight, taking off on March 22, 2024 from the flight test facility in Mojave, California.

Following behind was Test Pilot Tristan “Geppetto” Brandenburg in a T-38 chase plane to observe the flight and confirm altitude and speed. With a length of 62.6 feet (19 m) and a wingspan of 21 ft (6 m) , the XB-1 achieved an altitude of 7,120 ft (2,170 m) and speeds up to 238 knots (273 mph, 440 km/h) under the force of its three GE J85-15 engines generating a maximum thrust of 12,300 lbs.

According to Boom, once its aerodynamic characteristics and flight worthiness are confirmed, the XB-1 will increase speed until it is flying on later tests in excess of Mach 1.

This prototype supersonic test plane was first unveiled in 2020, four years ago, but runway taxi tests did not begin until 2023. I suspect the Wuhan panic contributed to the three year delay between unveiling and first tests, though this is speculation.

The goal is to build the first commercial superonic passenger plane since the Concorde. At present Boom has a contract from United for fifteen Boom 12-passenger planes, plus development deals with Boeing, and Japan Airlines.

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Antenna for joint NASA-ISRO radar satellite needs fix, delaying launch

8:50 am

The large deployable antenna for a joint NASA-ISRO radar satellite, dubbed NISAR, that was targeting a spring launch will require an extra coat of reflective material, thus delaying the satellite’s launch until the second half of this year.

In a March 22 statement, NASA said a new launch date for the NASA-ISRO Synthetic Aperture Radar (NISAR) mission will be set at the end of April because of work to protect the spacecraft’s reflector, an antenna that is 12 meters across when fully deployed, from temperatures when in its stowed configuration. “Testing and analysis identified a potential for the reflector to experience higher-than-previously-anticipated temperatures in its stowed configuration in flight,” NASA said in the statement. To prevent those increased temperatures, a “special coating” will be applied to the antenna so that it reflects more sunlight.

That work, NASA said, requires shipping the antenna, currently with the rest of the NISAR spacecraft in India, to a facility in California that can apply the coating. NASA did not state how long the process of applying the coating, as well as shipping the antenna to California and then back to India, will take.

It appears that the need for this additional coat was discovered during environmental testing by ISRO engineers in India as part of its preparation for launch on India’s GSLV rocket. Based on the JPL website for this mission, it appears this antenna system was built by JPL.

NASA is providing the mission’s L-band synthetic aperture radar, a high-rate communication subsystem for science data, GPS receivers, a solid-state recorder and payload data subsystem. ISRO is providing the spacecraft bus, the S-band radar, the launch vehicle and associated launch services.

Though the purpose of the final environmental testing prior to launch is specifically to find such issues and correct them, the question remains why this issue occurred. One can’t help wondering if the many management problems detailed at JPL in several reports (here, herej, here) might have contributed, including the organization’s total commitment since 2022 to Diversity, Equity, and Inclusion quotas, making skin color and sex the primary qualifications for hiring, rather than skill, education, or talent.

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SpaceX launches more Starlink satellites

9:17 am

The beat never ends: SpaceX last night successfully launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage successfully completed its nineteenth flight, landing successfully on a drone ship in the Atlantic. This stage is now the third that has completed a record nineteen flights. One wonders when a stage will reach twenty.

The leaders in the 2024 launch race:

29 SpaceX
12 China
4 Rocket Lab
4 Russia

American private enterprise now leads the rest of the world combined in successful launches 34 to 22, while SpaceX now leads the entire world, including American companies, 29 to 27.

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