Tag: engineering

November 16, 2023 Quick space links

3:10 pm

Courtesy of BtB’s stringer Jay, who notes it has been “a slow news day. I guess everyone is waiting to see SpaceX launch.” For me this has been good, as the day has mostly been tied up with doctors (nothing serious).

 

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Amazon’s first two Kuiper satellites in orbit worked exactly as planned

2:55 pm

Amazon announced today that its first two Kuiper satellites, launched into orbit by ULA’s Atlas-5 rocket on October 6, 2023, have worked exactly as planned, thus allowing the company to begin building operational satellites.

With the prototypes’ testing in space now complete, Badyal said Amazon plans to begin building the first production Kuiper satellites in December and launch the first satellites for its network in the “latter part of the first half” of 2024. Badyal emphasized that Amazon wasn’t sure what performance to expect from the prototype satellites, since “you don’t know how well it’s going to work in space.”

“They’re working brilliantly,” Badyal said.

The need of Amazon to start launching lots of satellites next year — in order to meet its FCC license requirements to put half of its 3,000+ constellation in orbit by 2026 — puts great pressure on ULA, Blue Origin, and Arianespace to get their new but as yet unlaunchd rockets operating. All three have big launch contracts with Amazon, but none presently appear to have the capability to meet the demands of those contracts.

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Starship/Superheavy test launch delayed to November 18, 2023

2:46 pm

SpaceX has pushed back the orbital test launch of its Starship/Superheavy rocket one day, to November 18, 2023, because one of the rocket’s grid fins was not working properly during a prelaunch test.

The new launch window opens at 7 am (Central), but is now only twenty minutes long. SpaceX says it will begin its live stream on X and here 35 minutes before liftoff.

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Jupiter’s Great Red Spot continues to shrink, possibly to its smallest size ever measured

2:27 pm

Jupiter, as seen by Hubble in 2020
A 2020 Hubble picture of Jupiter.
Click for full image.

Long term data from numerous observatories shows that the Great Red Spot on Jupiter, the largest and longest lasting storm in the solar system, has been continuously shrinking for decades, and appears approaching this year its smallest size ever measured.

Despite so many factors working to keep it “alive” the Spot may be in need of life support. It’s been shrinking for decades. In 2012 the rate of shrinkage abruptly accelerated, something many amateur observers have commented on since that time. Several years later, while still shrinking in diameter, it expanded in latitude becoming more circular. Now it’s narrowed again and continues to diminish in both axes. This observing season I’ve been struck by the Spot’s unusually small size. That, along with its pale pink color and turbulent environment, have made it less obvious than ever.

…Using the WinJUPOS program and one of his recent high-resolution images, Peach measured the Great Red Spot’s diameter on November 6, 2023, at 12,500 kilometers or about 7,770 miles across. If confirmed it would make this season’s GRS not only smaller than the Earth (12,756 kilometers or 7,926 miles across) but the smallest size in observational history. A British Astronomical Association Jupiter section bulletin on October 30th described it as “the smallest it has ever been.” That’s a far cry from the late 1800s when the Spot ballooned to 41,000 kilometers (25,500 miles) — big enough to swallow three Earths with room to spare. Now it can barely contain one!

No one knows if this shrinkage is merely a normal long term fluctuation, or a sign that this many-centuries-old storm is finally dissippating. When it comes to the solar system’s gas giants, their size and long orbits make any firm conclusion difficult in only a few centuries of observation. To understand them properly will likely require thousands of years of observations, covering many orbits and seasons.

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Saxavord spaceport gets launch deal from German rocket startup

2:07 pm

The Saxavord spaceport, one of two being built in Scotland, has signed a launch deal from the German rocket startup Hy-Impulse, with two suborbital test launches scheduled for next year and an orbital launch targeting 2025.

HyImpulse, a launch services provider and DLR spinoff based in Baden-Württemberg, Germany, is currently gearing up for its inaugural suborbital launch early next year from Australia. It will however look to conduct two suborbital launches from SaxaVord Spaceport, located in Scotland’s Shetland Islands, from August 2024 onwards. HyImpulse has already secured an Air Navigation Order (ANO) license from the UK’s Civil Aviation Authority for one launch.

These will be followed by first orbital launches from late 2025 onwards. The plan envisions rising to full commercial operations by 2030.

All this assumes that the UK’s Civil Aviation Authority (CAA) can issue the launch licenses in time. After all it only six to ten months to approve those suborbital launches, and almost two years to approve the orbital launch. So far the CAA has proven unable to approve anything within even those long time frames.

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Biden White House proposes major expansion of the regulations governing commercial space

9:23 am

We’re here to help you! The Biden White House yesterday proposed a major expansion of the regulations that govern commercial space, with the changes aimed at splitting all regulation within the Transportaion and Commerce Departments, but expand the regulations to so as to increase the power of the government over all future activitives, from rockets to spacecraft to space stations.

According to the White House’s statement [pdf]:

Specifically, this proposal would amend 51 U.S.C. 50902 to define a “human space flight vehicle” as a vehicle, including a launch vehicle or reentry vehicle, habitat, or other object, built to operate in suborbital trajectory or outer space, including on a celestial body, with a human being on board. A license would then be required for a citizen of the United States to operate a human space flight vehicle in outer space. (51 U.S.C. 50904).

DOT would authorize the operation of a human space flight vehicle consistent with public health and safety, safety of property, space sustainability, international obligations of the United States, and national security, foreign policy, and other national interests of the United States. (51 U.S.C. 50905). This proposal adds “space sustainability” and “other national interests” to DOT’s current authority. Including “space sustainability” would allow DOT to include debris mitigation and require measures to protect the sustainable use of outer space in their regulations, to include the mitigation and remediation of orbital debris and consideration of impacts to the space operational environment. [emphasis mine]

Essentially, these new rules — purposely written to be vague — will allow the government to forbid any activity in space by private citizens it chooses to forbid. No private space station could launch without government approval, which will also include the government’s own determination that the station will be operatied safely. Once launched, the vagueness of these regulations will soon allow mission creep so that every new activity in space will soon fall under its review.

Since no one in the government is qualified to supervise things like this, in the end politics and the abuse of power will be the rule.

Moreover, by what constitutional right does the federal government have to supervise the work of all space companies, in all things? It doesn’t have that right, and in fact the Constitution was written expressly to forbid it from attempting such a thing. The Constitution however is nothing more than fish wrap in modern America.

Note that most other news reports on this proposal are making it sound as nothing more than a simple revision of the law to better organize the regulatory system. The assumption is always that the government is all-knowing and all-seeing, and has the ability to act as school teacher for everyone else.

Initially we can expect these regulations will be followed with good faith, but such things never last. Given time they will end up squelching freedom in space and the entire American effort to colonize the solar system. And should any American colony become reasonably self-sufficient under these rules (something not likely), the rules guarantee that they will revolt from American rule as quickly as possible.

At this moment this proposal is simply that. Congress needs to review it and decide if it wishes to do as the Biden White House proposes. Though it is unlikely it will pass as written, it is also likely that our present Congress will simply reword it to accept this expansion of power, in some manner.

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China launches ocean observation satellite

8:52 am

China today successfully launched what it claimed was the first of a new generation of ocean observation satellites, its Long March 2C rocket lifting off from its Jiuquan spaceport in northwest China.

No word on where the rocket’s lower stages, which use toxic hypergolic fuels, crashed inside China.

The leaders in the 2023 launch race:

83 SpaceX
52 China
14 Russia
7 Rocket Lab
7 India

American private enterprise still leads China 95 to 52 in successful launches, and the entire world combined 95 to 81. SpaceX by itself is still leads the rest of the world (excluding American companies) 83 to 81.

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FAA and Fish & Wildlife approve further launches of Starship/Superheav at Boca Chica

12:35 pm

Starship/Superheavy flight plan for first orbital flight
The April Starship/Superheavy flight plan. Click for original image.
The slightly revised flight plan for flight two can be found here.

Starship stacked on Superheavy, September 5, 2023
Starship stacked on Superheavy, September 5, 2023,
when Elon Musk said it was ready for launch

UPDATE: The FAA has now issued the launch licence [pdf]. Note it adds that the FAA and Fish & Wildlife have imposed new requirements (as noted in the announcements below) on SpaceX on this and future launches, all of which will have to be reviewed after each launch.

Original post:
————————-
Both the FAA and the Fish & Wildlife department of the Interior Departiment today released their completed investigations of the environmental impacts created by the first test launch of SpaceX’s Starship/Superheavy rocket in April 2023, and (not surprisingly) concluded that the launch did no harm, and that a second launch can be allowed.

The FAA report can be found here [pdf]. The Fish & Wildlife report can be found here [pdf]. Both essentially come to the same conclusion — though in minute detail — that Fish and Wildlife had determined in April 2023, only a week after that first test launch.

No debris was found on lands belonging to the refuge itself, but the agency said debris was spread out over 385 acres belonging to SpaceX and Boca Chica State Park. A fire covering 3.5 acres also started south of the pad on state park land, but the Fish and Wildlife Service didn’t state what caused the fire or how long it burned.

There was no evidence, though, that the launch and debris it created harmed wildlife. “At this time, no dead birds or wildlife have been found on refuge-owned or managed lands,” the agency said. [emphasis mine]

In other words, the investigation for the past seven months was merely to complete the paperwork, in detail, for these obvious conclusions then.

As part of the FAA action today, it also issued range restrictions for a November 17, 2023 test launch at Boca Chica. Though there is no word yet of the issuance of an actual launch license, it appears one will be issued, and SpaceX is prepared for launch that day, with a 2.5 hourlong launch window, opening at 7 am (Central). SpaceX has already announced that its live stream will begin about 30 minutes before launch, at this link as well as on X.

Hat tip to BtB’s stringer Jay and my reader Jestor Naybor for these links.

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Lava/ice eruptions on Mars

11:49 am

Lava/ice eruptions on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on August 1, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled by the science team as showing “possible lava-ice interaction,” the photo features some pimply-looking mounds that, though round like craters, sit above the surrounding landscape like small volcanoes.

That these are likely not ancient pedestal impact craters that now sit higher because their material is packed and can resist erosion is illustrated by the bridge-like mound in the lower right. This mound was likely once solid, but its north and south sections have disappeared, either by erosion or sublimation. If formed by an impact the mound would have had a depression in its top center, and would have only eroded outside the rim.
» Read more

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Gamma ray burst 1.9 billion light years away was powerful enough to affect Earth’s atmosphere

9:34 am

One of the most powerful gamma ray bursts (GRBs) ever detected was so powerful that despite occurring about 1.9 billion light years away it was powerful enough to affect Earth’s atmosphere.

On 9 October 2022, for 7 minutes, high energy photons from a gigantic explosion 1.9 billion light-years away toasted one side of Earth as never before observed. The event, called a gamma ray burst (GRB), was 70 times brighter than the previous record holder. But what astronomers dub the “BOAT”—the brightest of all time—did more than provide a light show spanning the electromagnetic spectrum. It also ionized atoms across the ionosphere, which spans from 50 to 1000 kilometers in altitude, researchers say. The findings highlight the faint but real risk of a closer burst destroying Earth’s protective ozone layer.

“It was such a massive event, it affected all levels of the atmosphere,” says solar physicist Laura Hayes of the European Space Agency (ESA).

None of these consequences were harmful or even noticeable to any life on Earth, but the data proved without question that a GRB close by within the Milky Way could have been the cause of one or more of the past extinction events. It also proved that a future such nearby explosion could do the same again.

At present astronomers think that GRBs are caused either by the collapse of a massive star into a black hole, during a supernovae event, or by the merger of two neutron stars. Neither conclusion is proved as yet, though the evidence has eliminated most other theories.

For astronomers this GRB was significant because its strength allowed many different telescopes and detectors to record it, in many different wavelengths. Having such a wealth of information helps them better figure out what happened when the burst occurred.

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Japan to spend $6.6 billion over ten years to develop its space industry

9:19 am

The Japanese government has created a new $6.6 billion fund that it will provide to its space agency JAXA, spread out over the next ten years, to help develop the country’s commercial space industry.

The very short article at the link provides little additional information. For example, will JAXA be required to act merely as a customer, buying services from competing private companies, or will it be allowed to use this money to create its own projects that it designs, builds, and owns?

The difference is fundamental. Presently JAXA functions like NASA had for decades, partnering with only a handful of big space companies (Mitsubishi for example) to build its own government rockets and spaceships. The results have been comparable to NASA prior to 2010: Little gets built and whatever is built is overbudget and far behind schedule.

Since NASA accepted the idea of capitalism in space, where it no longer builds or owns much but relies on private enterprise to get it done, things have moved fast. Similarly, India and China have followed suit, and both are getting similar good results.

The unanswered question from this story is whether Japan has finally taken the leap to do it as well. Making this transition can be politically difficult, because the space agencies and big space contractors fight to protect their turf. It is not clear if the Japanese government is willing to fight that battle.

If it doesn’t, however, Japan will continue to be a backwater in space, like Russia,as the rest of the world’s space-faring nations increasingly turn to private enterprise, competition, and (most of all) freedom to get results.

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Scientists: More evidence cosmic rays come from nearby supernova remnants

9:07 am

The uncertainty of science: According to high energy data from an instrument on ISS, astronomers found more evidence that the cosmic rays that enter our solar system likely come from nearby supernova remnants.

Current theory posits that the aftermath of supernovae (exploding stars), called supernova remnants, produce these high energy electrons, which are a specific type of cosmic ray. Electrons lose energy very quickly after leaving their source, so the rare electrons arriving at CALET with high energy are believed to originate in supernova remnants that are relatively nearby (on a cosmic scale), Cannady explains.

The study’s results are “a strong indicator that the paradigm that we have for understanding these high-energy electrons—that they come from supernova remnants and that they are accelerated the way that we think they are—is correct,” Cannady says. The findings “give insight into what’s going on in these supernova remnants, and offer a way to understand the galaxy and these sources in the galaxy better.”

The results however do not prove this. Nor do they eliminate the possibility that cosmic rays might also come from other sources outside our galaxy. At present the data is simply too uncertain.

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