Category: Behind The Black

SpaceX’s next Superheavy/Starship launch, according to SpaceX

10:06 am

According to SpaceX’s CEO, Gwynne Shotwell, the company hopes to be ready to fly its fourth orbital test flight of Superheavy/Starship in about six weeks, and will not attempt to deploy any Starlink satellites, as I speculated earlier this week.

“We’ll figure out what happened on both stages,” she said, not discussing what may have gone wrong with either, “and get back to flight hopefully in about six weeks,” or early May. She added that the company doesn’t expect to deploy Starlink satellites on the next Starship launch, as some had speculated. “Things are still in trade, but I think we’re really going to focus on getting reentry right and making sure we can land these things where we want to land them.”

The story however provided one very important tidbit of information about the launch license process from the FAA. Kelvin Coleman, FAA associate administrator for commercial space transportation, noted that after the second test flight in November 2023 “the company completed that report in several weeks.”

That statement confirms my conclusion in late December that SpaceX had been ready to launch in early January, but couldn’t do it because the FAA had to spend another two months rewriting SpaceX’s investigation report.

We should therefore not be surprised if the same thing happens on the next test flight. Shotwell says SpaceX hopes to be ready to launch in early May. That means it will likely submit its report to the FAA around then. Expect the agency to then spend at least one to two months retyping the report, as it has done now after both the first and second flights.

Based on this information, we should now expect the fourth flight to occur sometime in the June-July timeframe, with July more likely.

I am sure that the people at the FAA want to move as quickly as possible. I am also sure their bosses in the White House are demanding they dot every “i” and cross every “t”, with meticulous care, so that things cannot move as fast as desired. That has been the pattern since Joe Biden took office, and I have seen no evidence of that changing now.

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A relatively dim star is expected to become one of the brightest in the sky later this year

9:49 am

As it has done twice before at intervals of 80 years, a relatively dim star is expected to go nova later this year, becoming for a short time one of the brightest stars in the sky.

Located in the Northern Crown constellation, T Coronae Borealis (T CrB) is a pretty average looking star, most of the time. With a brightness of about magnitude +10, it’s right on the limits of what you could see with a pair of binoculars, and even if you do go looking there’s not much to see.

At least, that’s the case for about 79 out of 80 years. But on that 80th year, the star suddenly brightens drastically up to around magnitude +2, which puts it on par with the north star Polaris. That makes it one of the brightest stars in the night sky, easily visible with the naked eye even when washed out by city lights. This once-in-a-lifetime outburst last occurred in 1946, and before that 1866.

And lucky for stargazers, T CrB seems to be about two years ahead of schedule, with astronomers predicting it will flare up again between March and September 2024. It’ll appear as a bright ‘new’ star for a few days with the naked eye, and a little over a week with binoculars, before it settles down again for another few decades. Astronomers noticed last year that T CrB had started to dim, which data from 1945 showed preceded the last brightening event.

The star is actually a binary, made up of a white dwarf and a red giant. The white dwarf is pulling material from the red giant, and as that new material piles up, it eventually gathers enough mass to go critical and produce a thermonuclear explosion. The result is a nova, a smaller version of a supernova that unlike supernovae occurs repeatedly.

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Orbit Fab announces price tag for installing its refuelling port on satellites

9:40 am

Orbit Fab has now set a price of $30,000 for its satellite refuelling port, should companies decide to install one on their satellites.

Orbit Fab on March 19 … unveiled pricing for the RAFTI refueling ports, setting the price tag at $30,000 per unit. Executives said the number was based on market research into the pricing of fill and drain valves widely used across the satellite industry. “With a qualified port design, satellite manufacturers can now incorporate RAFTI with more confidence, knowing it has passed rigorous testing,” said Adam Harris,Orbit Fab’s chief commercial officer.

Clearing these tests paves the way for Orbit Fab to deliver the first 100 RAFTI units to U.S. government and commercial customers over the next year, Harris said.

Once in orbit, an Orbit Fab refueling tanker will rendezvous with the satellite, dock at the port, and pump new fuel into the satellite.

While no actual refueling missions are presently scheduled, the company is negotiating with both the Air Force and Space Force to fly such a mission to satellites they have already outfitted with this port.

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Indian rocket startup to attempt suborbital test launch this week

9:30 am

India's spaceports
India’s spaceports

Agnikul, one of the two rocket startups in India attempting to enter the launch market, is targeting March 22, 2024 for the first suborbital test launch of its Agnibaan rocket, lifting off from its own private launch site off the eastern coast of India.

Agnikul Cosmos is all set to conduct the maiden launch of the Agnibaan launch vehicle on Friday. The maiden test is aimed at validating the working of the first stage of the rocket that will power the vehicle in future missions.

Dubbed Agnibaan SOrTeD, the Sub Orbital Technology Demonstrator mission will see the maiden launch from India’s first private launchpad which has been developed with assistance from the Indian Space Research Organisation (ISRO).

The map shows the location of Agnikul’s launch site, south of ISRO’s long established spaceport at Sriharikota. The third spaceport at India’s southern tip is a new facility being built by ISRO.

If this launch is successful, Agnikul will have caught up with the other Indian rocket startup Skyroot, which conducted its own suborbital test launch in November 2022.

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ESA: Euclid vision cleared after being fogged by ground ice, after launch

9:13 am

The European Space Agency (ESA) today announced that engineers have successfully “de-iced” the optics of its new Euclid space telescope that developed after it was launched in July 2023.

It was always expected that water could gradually build up and contaminate Euclid’s vision, as it is very difficult to build and launch a spacecraft from Earth without some of the water in our planet’s atmosphere creeping into it. For this reason, there was an ‘outgassing campaign’ shortly after launch where the telescope was warmed up by onboard heaters and also partially exposed to the Sun, sublimating most of the water molecules present at launch on or very near Euclid’s surfaces. A considerable fraction, however, has survived, by being absorbed in the multi-layer insulation, and is now being slowly released in the vacuum of space.

After a huge amount of research – including lab studies into how minuscule layers of ice on mirror surfaces scatter and reflect light – and months of calibrations in space, the team determined that several layers of water molecules are likely frozen onto mirrors in Euclid’s optics. Likely just a few to few tens of nanometres thick – equivalent to the width of a strand of DNA – it’s a remarkable testament to the mission’s sensitivity that it is detecting such tiny amounts of ice.

While Euclid’s observations and science continue, teams have come up with a plan to understand where the ice is in the optical system and mitigate its impact now and in the future, if it continues to accumulate.

It appears this new process has worked, according to a short update at the link.

Normally spacecraft are vented both on the ground during thermal testing, as well as when they reach orbit. It appears some of these normal procedures were either insufficient for Euclid’s needs, or threatened its optics if done as usual. This press release suggests that Euclid required very targeted venting processes that would not harm its sensitive optics, and that the procedures have worked.

I must admit I am suspicious of these claims. During development and after launch Euclid has had a number of problems. First, back in 2017 the NASA instrument on the telescope had to be completely rebuilt when it was found to be defective. Second, after launch engineers discovered unexpected light leaks on the mirror that now limit where it can look. Third, the telescope required a software patch to fix its pointing system, which was confusing cosmic rays for guide stars, causing it to shift positions randomly.

I can’t help wondering if this icing on the mirrors was also due, not to actual planning as suggested by ESA’s press release, but to poor ground testing and engineering that missed what is a common problem on spacecraft and thus required a post-launch improvised fix. I admit I might be wrong, but I still wonder.

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China launches communications orbiter towards the Moon

8:19 pm

Using its Long March 8 rocket lifting off from its coastal Wenchang spaceport, China today launched its second Quequiao communications satellite to the Moon, designed to relay data from its landers on the far side back to Earth.

The Queqiao 2, or Magpie Bridge 2, satellite was lifted atop a Long March 8 carrier rocket that blasted off at 8:31 am from a coastal launch pad at the Wenchang Space Launch Center in China’s southernmost island province of Hainan.

After a 24-minute flight, the satellite was released from the rocket and then entered into a lunar transfer trajectory. At the same time, the solar wings and communication antennas smoothly unfolded.

This satellite is in preparation for the May launch of China’s Chang’e-6 lunar mission to grab samples from the Moon’s far side and bring them back to Earth. In the meantime it will test its capabilities by relaying data from the Chang’e-4 lander and its Yutu-2 rover, still in operation on the far side after landing there in January 2018.

The leaders in the 2024 launch race:

27 SpaceX
11 China
3 Russia
3 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 31 to 20, while SpaceX leads the entire world, including American companies, 27 to 24.

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March 19, 2024 Quick space links

3:33 pm

Courtesy of BtB’s stringer Jay, who has finally returned from the Solomon Islands after his DX ham expedition (a week late). As he wrote me,

Flights got cancelled on my last week and we were stuck for another week in the Solomons. One of the reasons why we got flown off was it is election time next month, so all the politicians are flying as well. Never fly Fiji Airlines and Solomon Airlines.

I did go to the sites of the battles during the Guadal Canal campaigns during WW2, those are bloody battles that you do not hear or read about.

The Solomon Islands is a third world country and they hate the Chinese. The people are pissed off that their elected officials sold their fishing rights to the Chinese for $85,000. Yes, you read that correctly, a multi-million dollar industry for $85,000 USD. Lots of graft and corruption there. They have so much potential, and they squander it. Only a three hour jump to the west is Fiji, and it enjoys a huge booming tourist economy.

On to the quick links. 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.

  • ULA’s CEO touts the Vulcan upper stages now ready in its manufacturing building

    • Three are shown in the image, suggesting ULA is ready for at least that many launches, assuming Blue Origin delivers the necessary first stage engines.

 

  • Boeing has begun fueling Starliner for launch

    • Takes about two weeks. Once completed the capsule will be sent to ULA’s assembly building for stacking on the rocket. This loading however says they are now committed to the May launch.

 

 

 

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Make no mistake, Israel is about to begin the final defeat of Hamas in Gaza

1:38 pm

Hamas vs Israel
Even the Arabs recognize these facts.
Courtesy of Doug Ross.

If anything should illustrate the bankrupt, mindless, stupid and out-of-touch mentality of the leaders of the Democratic Party, it has been the efforts recently of President Joe Biden and Senate Majority leader Charles Schumer (D-New York) to push for a major slow-down or even shut down of Israel’s war against the murderous Hamas leadership and its minions in Gaza.

Biden wants Israel to slow down and to limit its offensive and not move into the last Hamas stronghold in its southern city of Rafah. Schumer has called for new elections in Israel to remove Netanyahu, who Schumer called “an obstacle to peace.”

Both, along with many members of their party, are presently considering ways to punish Israel if it defies them and invades Rafah, including withholding military aid.

Both men are actually excellent examples of the majority of the modern Democratic Party, willing to excuse rape and murder of women and children, if it furthers their political agenda. Both want the American Muslim vote, and are willing to tolerate any evil by Islamic terrorists to get it. In fact, it is very likely that they are doing this because of a strong undercurrent of anti-Semitism and Jew-hate within their party ranks.

What these leaders of the Democratic Party do not understand at all is that Israel is no longer interested in compromising with them, with Hamas, or with any Islamic terrorists anywhere. As Netanyahu made clear in his response to these calls this past weekend, Israel is moving forward in this war, and nothing is going to stop it.
» Read more

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Apollo astronaut Tom Stafford passes away at 93

9:45 am

Apollo 10 astronaut Tom Stafford, who also flew two Gemini missions as well as the Apollo-Soyuz mission, passed away yesterday at the age of 93.

Stafford’s first flight was on Gemini 6, which achieved the first rendezvous in space when it maneuvered close to Gemini 7 during its two week mission. He then flew on Gemini 9, which was to attempt the first docking but was stymied when the shroud on the Agena target vehicle failed to release, blocking the docking port. The crew could only rendezvous again.

Stafford then commanded Apollo 10, the dress rehearsal for the lunar landing, flying his lunar module to within about ten miles of the Moon’s surface. His final mission was Apollo-Soyuz, the first joint mission between the United States and the Soviet Union.

Of the 24 Apollo astronauts that flew to the Moon, only seven still live. A truly great generation of Americans, possibly the greatest generation of all, is slowly leaving us.

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Gehrels Swift space telescope now in safe mode

9:33 am

The Gehrels Swift space telescope, used to get real time observations of gamma ray bursts and other high energy deep space events, is presently in safe mode due to the failure of one of its three gyroscopes.

On March 15, NASA’s Neil Gehrels Swift Observatory entered into safe mode, temporarily suspending science operations due to degrading performance from one of its three gyroscopes (gyros), which are used to point the observatory for making observations. The rest of the spacecraft remains in good health.

Swift is designed to successfully operate without one of its gyros if necessary; however, a software update is required. The team is working on the flight software update that would permit the spacecraft to continue science operations using its two remaining gyros.

The telescope has been operating in orbit for nearly twenty years, far longer than originally planned. Its observations were crucial in discovering that gamma ray bursts occur at vast distances and involve either the core collapse of a star or the merger of two neutron stars.

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India’s Vikram lander disturbed the lunar surface the least of all landers

9:29 am

According to an analysis of images taking before and after landing, engineers have concluded that India’s Vikram lander disturbed the lunar surface the least of all landers, due to its use of multiple smaller landing engines.

Presenting the new findings at LPSC on Monday, [ISRO scientist Suresh K] attributed the intriguingly short dust plume to the lack of a central engine on the spacecraft, which resulted in a lower engine thrust during descent. Starting its “rough braking phase” at an orbit of 18.6 miles (30 kilometers) above the lunar surface, when the spacecraft reached 0.4 miles (0.8 kilometers) above its targeted landing area, it switched off two of its four 800-newton engines such that two diagonal engines remained operational all the way until touchdown. The mission used the “least powerful engine till date,” [Suresh] K said. “We’ve observed very less disturbance on the surface.”

You can read their paper here [pdf].

Finding ways to reduce the dust kicked up during landings will be critical for the early missions to the Moon, before landing pads can be constructed. This research suggests that when Starship lands, it should use only its outer engines, and gimbal them sideways, in order to reduce the dust thrown up around it.

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