Tag: engineering

InSight deploys heat sensor onto Mars surface

1:22 pm

InSight has successfully deployed its temperature instrument onto the Martian surface, where it will next begin drilling its heat sensor about sixteen feet down into the ground.

Equipped with a self-hammering spike, mole, the instrument will burrow up to 16 feet (5 meters) below the surface, deeper than any previous mission to the Red Planet. For comparison, NASA’s Viking 1 lander scooped 8.6 inches (22 centimeters) down. The agency’s Phoenix lander, a cousin of InSight, scooped 7 inches (18 centimeters) down.

“We’re looking forward to breaking some records on Mars,” said HP3 Principal Investigator Tilman Spohn of the German Aerospace Center (DLR), which provided the heat probe for the InSight mission. “Within a few days, we’ll finally break ground using a part of our instrument we call the mole.”

Whether the spike will be able to get to 16 feet will depend on many factors, such as whether a rock below the surface happens to be in the way.

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NASA about to pull plug on Opportunity

4:58 pm

Rumors today say that during a press conference tomorrow NASA will announce that it is closing the books on the incredibly successful rover Opportunity.

From the first link:

NASA said Tuesday it will issue a final series of recovery commands, on top of more than 1,000 already sent. If there’s no response by Wednesday — which NASA suspects will be the case — Opportunity will be declared dead, 15 years after arriving at the red planet.

Opportunity was supposed to last 90 days. Instead, it lasted just under fifteen years, drove 28 miles, and saw far more of the Martian surface than anyone ever expected.

It now sits inside the rim of fourteen-mile Endeavour Crater, waiting for those first explorers to come and get it. I wonder when that will be.

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Strange crescent-shaped pit near Martian south pole

2:19 pm

crescent-shaped pit near Martian south pole

Cool image time! The south polar cap of Mars is a strange place. It is largely ice, with a seasonal cap of frozen carbon dioxide, or dry ice. Because the dry ice sublimates away during the summer months, the cap undergoes regular changes that reshape it, producing alien features that are not seen on Earth.

The image on the right is another example of these alien features. I found it in the February image release from the high resolution camera on Mars Reconnaissance Orbiter. I have merely cropped the full image to focus at full resolution on its primary feature, a region of stippled-like surface surrounding an area of black striping that in turn surrounds a crescent-shaped pit outlined by whiter material.

Why is there a pit here? Why is it crescent-shaped? Why is it surrounded by that whiter material? I could guess and say that the pit is a vent from which water vapor from the lower cap of water sprays out onto the upper cap of frozen carbon dioxide, staining it with white ice, but I am most likely wrong.

Moreover, what causes the black striping, as well as the stippled material surrounding it? The black stripes are probably related to a similar process that forms the spider formations found in the polar regions, except that these are not spiders. Why the parallel straight lines?

A lot of questions with no answers. While many features on Mars are strange, the features near the poles are probably stranger still, as they form in a place with chemistry, temperatures, gravity, and materials in a combination and scale that we on Earth have no experience with.

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Chang’e-4 & Yutu-2 enter sleep mode for second lunar night

9:40 am

The Chinese lunar lander Chang’e-4 and its rover Yutu-2 have both gone into hibernation as part of their preparation for surviving their second night on the Moon’s surface.

The Yutu-2 rover and lander will resume science and exploration activities on Feb. 28 and March 1, respectively, according to the release, with the rover needing to unfold solar panels and dissipate heat.

The previous lunar night saw the Chang’e-4 lander record a temperature low of -190 degrees Celsius (-310 Fahrenheit), with measurements made possible by a Russian-developed radioisotope thermoelectric generator which also acts as a prototype for future deep-space exploration.

Official updates on the progress of the mission had been sparse during the second lunar day of operations, though some new images and footage were released ahead of the Chinese New Year holiday, which ran from Feb. 4 to Feb. 10.

Yutu-2 has traveled about 400 feet so far.

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Military inspector general to review SpaceX’s launch certification

9:11 am

The swamp attacks! The inspector general for the Defense Department has begun a review of the process the Air Force used to certify SpaceX as a qualified military launch provider.

“Our objective is to determine whether the U.S. Air Force complied with the Launch Services New Entrant Certification Guide when certifying the launch system design for the Evolved Expendable Launch Vehicle-class SpaceX Falcon 9 and Falcon Heavy launch vehicles,” the inspector general said in a memo to Air Force Secretary Heather Wilson sent on Monday.

The only reason I can see for this investigation is that the launch companies that have development contracts with the military — ULA, Northrop Grumman, and Blue Origin — are applying pressure to get SpaceX eliminated as a competitor. And since there are many in the government aerospace bureaucracy who are in bed with these companies and are also hostile to SpaceX, that pressure has succeeded in getting this investigation started.

SpaceX meanwhile has successfully launched one military payload, and has two more military launches scheduled for 2019. Its prices are so low that these other companies cannot presently compete, not without political help. Worse, it appears these other companies, and the Air Force, do not appear interested in reducing the cost of their next generation rockets to become more competitive. Instead, they apparently have decided to turn the screws on SpaceX and get it eliminated as a competitor.

Meanwhile, SpaceX might be doing its own political push back, behind the scenes. At least, why else did two California lawmakers recently demand a review of the Air Force’s rocket development contracts to all of SpaceX’s competitors, but not SpaceX?

All of this has absolutely nothing to do with picking the best and cheapest launch companies to save the taxpayer money. Instead, the entire way our government operates today is completely uninterested in the needs of the nation. The focus of lawmakers and government officials is to play political games in an effort to take out their opponents. And in this battle the country be damned.

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Second orbital launch failure in a month for Iran rocket

7:40 pm

According to U.S. officials, Iran has attempted and failed twice in the past month to place satellites in orbit.

Iran’s second try in less than a month to send a satellite into orbit apparently failed shortly after liftoff from a remote desert launch pad under daily surveillance from a fleet of commercial imaging spacecraft, according to U.S. government officials and independent analysts.

Images of the launch pad in north-central Iran taken by orbiting satellites owned by U.S. companies suggest a rocket launch occurred last week, but the U.S. military’s catalog of space objects registered no new spacecraft in orbit. A satellite launch attempt was expected in recent weeks based on statements from Iran’s government and observations of increasing activity at the launch site.

Iran has admitted to a launch failure on January 15, though it denies the failure last week, claiming instead that the February launch succeeded in placing its satellite in orbit, even though no new satellite has been detected.

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MAVAN shifts priorities to communications

7:28 pm

The Mars orbiter MAVAN, designed primarily to study Mars’s atmosphere, is now lowering its orbit as it shifts its primary function from science to communications between the Earth and the rovers on the surface.

A strong telecommunications antenna signal is not the only benefit of a tighter orbit. Coming in nearly 1,000 miles (about 1,500 kilometers) closer also will allow the MAVEN orbiter to circle Mars more frequently – 6.8 orbits per Earth day versus 5.3 previously – and thus communicate with the Mars rovers more frequently. While not conducting relay communications, MAVEN will continue to study the structure and composition of the upper atmosphere of Mars. “We’re planning a vigorous science mission far into the future,” Jakosky said.

In a sense, NASA here is finding a way to replace the Mars communications satellite that it wanted but was not able to get funded.

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NASA’s political and corrupt safety panel

2:49 pm

After spending the last few years complaining about certain specific issues with the manned capsule efforts of SpaceX and Boeing, NASA’s safety panel this past weekend released its annual 2018 report. (You can download the report here [pdf].) Its position now on those certain specific issues can now be summarized as follows:

They make no mention of the parachute issues that forced Boeing to do numerous extra tests, causing probably a year delay in the program, though Boeing has had decades of experience with capsule parachutes and the entire American aerospace industry has never had a parachute failure.

The panel also admits that their concerns about SpaceX’s rocket fueling procedures is really not an issue.

The NESC [NASA Engineering and Safety Center] has independently studied the load and go procedure and provided a thorough report that identifies the hazards and available controls. Based on the NESC report, the CCP [Commercial Crew Program] has decided that the load and go concept is viable if subsequent analysis is adequate and if verifiable controls are identified and implemented for all the credible hazard causes that could potentially result in an emergency situation or worse.

As Emily Litela said, “Never mind!” Their concerns were never credible, as it really doesn’t matter if you fuel the rocket before or after the astronauts board, because in either case they are there when a lot of fuel is present. All the panel did was delay the first Dragon launch by at least a year by pushing this issue.

The panel is still holding onto its concerns about the installation blankets (COPV) used in SpaceX’s internal helium tanks, the location of the problem that caused the September 2016 launchpad explosion. Despite SpaceX’s apparent fixing of this problem, with 40 successful launches since that failure, they are listing further vague requirements:
» Read more

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LRO spots Chinese lunar rover

10:31 am

Yutu-2 and Chang'e-4 on far side of Moon

The Lunar Reconnaissance Orbiter (LRO) science team has now released a second and closer image of Chang’e-4’s location on the far side of the Moon, which now also shows the nearby rover Yutu-2.

The two arrows in the image to the right, cropped to post here, show both. The rover is the dot on the right, with the lander to the left, both just beyond the arrow tips. Both are very small, with Yutu-2 for example only two pixels across. Still, with both you can see their shadows, equally small, to the left of both bright dots. With sunlight coming from the right, all the craters, which are recessed, have their shadows on the right. The spacecraft, sticking up from the surface, have shadows going to the the left.

As Yutu-2 continues its travels, LRO will likely take more images, allowing us to track it even if the Chinese provide limited information.

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SpaceX’s new Raptor engine: The world’s most powerful?

10:19 am

According to a tweet by Elon Musk, SpaceX’s new Raptor rocket engine has achieved during testing a chamber pressure that exceeds that of Russia’s RD-180 engine, which for decades has held the record.

First and foremost, it’s far too early to actually crown Raptor as the new official record-holder for combustion chamber pressure. RD-180 has been reliably flying on ULA’s Atlas V rocket with chamber pressures as high ~257.5 bar (3735 psi) since the year 2000, while Raptor has been performing subscale integrated testing for roughly two years and full-scale integrated testing for less than seven days. As such, the fact that full-scale Raptor has achieved ~269 bar (3900 psi) is an almost unbelievably impressive achievement but probably shouldn’t be used to jump to any conclusions just yet.

Thanks to the 10-20% performance boost supercool liquid methane and oxygen will bring Raptor, currently stuck using propellant just barely cold enough to remain liquid, the engine performing tests could already be made to reach its design specification of 300+ bar (4350+ psi), although Musk cautioned that he wasn’t sure Raptor would be able to survive that power in its current iteration. Nevertheless, 250 bar is apparently more than enough to operate Starship and its Super Heavy booster during most regimes of flight, although maximum thrust (and thus max chamber pressures) is probably desirable for the first minute or so after launch when gravity losses are most significant. [emphasis in original]

If the Raptor meets these goals, it will make most of Musk’s dreams for Startship and Super Heavy very possible.

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New Horizons’ farewell image of Ultima Thule

4:34 pm

Ultima Thule's shape

The New Horizons science team has released the last sequence of images taken by the spacecraft as flew away after its flyby.

The link has a nice video of that sequence. However, it is the information gleaned from this sequence that is most interesting.

The newly released images also contain important scientific information about the shape of Ultima Thule, which is turning out to be one of the major discoveries from the flyby.

The first close-up images of Ultima Thule – with its two distinct and, apparently, spherical segments – had observers calling it a “snowman.” However, more analysis of approach images and these new departure images have changed that view, in part by revealing an outline of the portion of the KBO that was not illuminated by the Sun, but could be “traced out” as it blocked the view to background stars.

Stringing 14 of these images into a short departure movie, New Horizons scientists can confirm that the two sections (or “lobes”) of Ultima Thule are not spherical. The larger lobe, nicknamed “Ultima,” more closely resembles a giant pancake and the smaller lobe, nicknamed “Thule,” is shaped like a dented walnut.

The image on the right shows their preliminary guess at Ultima Thule’s overall shape, as suggested by these new images.

The spacecraft has still not sent back the images it took during its closest approach, so there are likely more surprises coming.

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Mysterious dark-toned Martian terrain

12:37 pm

Dark toned ridge in Martian southern highlands
Click for full resolution image

Cool image time! The picture on the right, cropped and reduced to post here, was part of the January image release from the high resolution camera of Mars Reconnaissance Orbiter (MRO). It shows an area in the Martian southern highlands where the surface suddenly gets darker, for no obvious reason.

The uncaptioned release image is titled “Dark-Toned Ridge at Junction with Dark-Toned Plain.” From the image itself it is hard to understand this title. In the full image the darkest terrain is a strip in the center, with slightly lighter dark terrain on either side, and the lightest terrain to the north or south. The photograph however does not show us how far this dark terrain extends to the west or east.

Two Mars Odyssey image strips of less resolution, here and here, show that this region is filled with several large patches of dark-tone surface. With this particular patch the center dark ridge is surrounded by that slightly lighter dark area.

MRO itself has not taken many images of this region, as shown in the overview image below. The red rectangles indicate MRO’s high resolution photographs, with this image indicated by the cross. At this low resolution this region seems somewhat nondescript. The Mars Odyssey image strips show that there many features here, but with little significant relief.

Location of dark toned ridge

At high resolution there does not appear to be much difference between the darker and lighter areas. The lighter areas in general seem less rough and at a slightly lower elevation, but both areas are dominated by ridges and dunes trending southwest-to-northeast.

Why is this slightly higher region darker? Let’s assume that this darker material was a lava flow overlaying the surface. Over eons wind erosion, trending southwest-to-northwest, roughly eroded both it and the lower layers around it, leaving behind this rough corroded terrain. The different make-up of the darker material allows it to erode in a rougher manner.

While possibly correct, I would not bet much money on this guess. It is not clear it is lava. It is not clear that it is a flow. It does not explain why there are two areas of different darkness. And it certainly not clear what the make-up of any of this stuff is.

This is simply another cool mystery on the Martian surface.

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Curiosity has left Vera Rubin Ridge

11:36 am

The Curiosity science team today released an update on their results from the rover’s year-plus exploration of Vera Rubin Ridge, even as the rover has descended off the ridge into the lower clay-bearing area between the ridge and Mount Sharp.

Even though the rover has left the ridge, Curiosity’s team is still piecing together the story of its formation. While there have been a number of clues so far, none fully explains why the ridge has resisted erosion compared with the bedrock around it. But the rover’s investigation did find that the rocks of the ridge formed as sediment settled in an ancient lake, similar to rock layers below the ridge.

,,,A NASA orbiter studying the ridge had previously identified a strong signal from hematite, an iron-rich mineral that often forms in water. Curiosity confirmed the presence of hematite, along with other signs of ancient water, like crystals. These signs appeared in patches, leading the team to suspect that over time groundwater affected certain parts of the ridge differently than others. Another discovery was that the hematite signatures Curiosity mapped didn’t always match the view from space.

The link also includes a neat 360 degree video that allows you to scan around the rover, as it sat on Vera Rubin Ridge.

The journey into the clay unit below the ridge has been most interesting. I plan to post a rover update with some details next week.

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Trump administration moves forward with reorganization of space bureaucracy

9:48 am

The Trump administration is moving ahead with its planned reorganization of the military’s entire space bureaucracy under the rubric of the Space Force.

The Pentagon is moving forward with plans to create a Space Force as a new military branch. Acting Defense Secretary Patrick Shanahan said the Space Force will be small in size and its advantage will come in the form of cutting-edge technology.

Shanahan also has concluded that the existing DoD bureaucracies are not equipped to deliver next-generation space technologies quickly enough. He has directed the establishment of a Space Development Agency that would report directly to Undersecretary of Defense for Research and Engineering Mike Griffin. Many details are still being worked out about the SDA, but Shanahan said in a memo that he wants it set up by March 29.

Because much of the modern press does such a bad job, working from a general ignorance, I must repeat again that the goal here is not to make a space army, with laser guns and uniforms, but to centralize the various military space departments, scattered across several divisions, into one office that has some clout because it reports directly to the White House. Right now these scattered offices report to different military agencies with different and competing agendas. The result has been a poorly coordinated space policy that has been expensive and also unable to accomplish much in recent years.

Whether this reorganization will streamline things as it is intended remains an open question. The bureaucratic culture in Washington is certainly never interested in streamlining. The usual result of such efforts is a larger bureaucracy that spends even more. We shall see.

This action is also related to another story today: Lawmakers: Air Force launch procurement strategy undermines SpaceX

Sen. Dianne Feinstein (D-Calif.) and Rep. Ken Calvert (R-Calif.) are calling for an independent review of the Air Force’s space launch procurement strategy. They contend that the Air Force, in an effort to broaden the launch playing field, is putting SpaceX at a competitive disadvantage.

In a Feb. 4 letter addressed to Air Force Secretary Heather Wilson, Feinstein and Calvert — both with strong ties to the space industry — argue that the path the Air Force has chosen to select future launch providers creates an unfair playing field. Although SpaceX is not mentioned in the letter by name, it is clear from the lawmakers’ language that they believe the company is getting a raw deal because, unlike its major competitors, it did not receive Air Force funding to modify its commercial rockets so they meet national security mission requirements.

This second story actually illustrates the bureaucratic concerns that the Trump administration is trying to address in the first story. It appears to the elected officials that the military’s award of this contract was not necessarily in the best interests of the military, but instead was designed to help some companies at the expense of others.

The $2.3 billion in funding went to ULA, Blue Origin, and Northrop Grumman to develop their next generation rockets. Why SpaceX, considered a favorite, did not receive any funding remains unclear, though SpaceX officials have indicated that in the past they have refused government development money (for building Falcon Heavy) because of the requirements attached. It could be that SpaceX did the same here, but it is also possible that the military bureaucracy played favorites.

It is this question that the elected officials want clarified.

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UK smallsat rocket company unveils upper stage prototype

9:26 am

Capitalism in space: The smallsat rocket company Orbex yesterday unveiled a prototype of the upper stage of its Prime rocket.

UK launch services provider Orbex has unveiled a completed engineering prototype of the second stage for its Prime rocket at the opening of its new headquarters and rocket design facility in Forres in the Scottish Highlands. Prime is a small satellite launcher that is set to be the first UK rocket to launch UK satellites from a UK launch site. Orbex also announced two customers who have signed up for Prime launches.

They are aiming for 2021 for their first launch from the United Kingdom’s first spaceport in Sutherland in northern Scotland. Orbex and Lockheed Martin are the two companies that have a deal to use this spaceport.

The more significant part of this announcement that the two new launch agreements, from the smallsat satellite companies UK-based Surrey and Swiss-based Astrocast. This means that have some customers.

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Turkey’s president endorses creation of space agency

8:53 am

The new colonial movement: Recep Tayyip Erdoğan. the president of Turkey, has signed an order endorsing a proposed Turkish space agency.

The agency is expected to develop technologies for rocket launches and space exploration, as well as to coordinate the space-related activities of the country’s other space-research centres, according to the order, signed on 13 December.

It’s not yet clear how much of the national budget the new organisation will receive, or when it will be up and running. “The judicial details of the agency are still being sorted out,” said Mustafa Varank, the Minister of Industry and Technology, during a speech at the National Space Workshop held in Gebze, Turkey, on 19 January. He added that this is a historic moment for a country whose flag pictures the Moon and a star.

While this action has likely been inspired by the increasingly successful space efforts in both Israel and the UAE, the motives for it probably have more to do with power and control. Unlike the UAE, which clearly outlined its goals (to inspire its population and diversify its economy) with specific missions designed to do that (a mission to Mars and an astronaut mission to ISS that allowed the entire population to apply to go), this Turkish proposal seems only designed to take control of whatever space activities exist there. It might end up encouraging more aerospace industry, but that industry is now clearly going to be run by Turkey’s government.

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Hawaiian activists say “No!” to smallsat spaceport

12:13 pm

The coming dark age: At a meeting to obtain public feedback on a proposed smallsat spaceport in Hawaii, activists were almost all hostile or opposed to the project.

There might be justified reasons to oppose the spaceport, but since the environmental assessment is not yet published, it is unclear at this point what those reasons might be. The reasons cited by these opponents, noise and pollution, don’t seem serious. The spaceport being proposed is for smallsat rockets, rockets that are very small (only a few times larger than the biggest model rockets). Even if they launch weekly these rockets will not cause serious noise or pollution issues.

Thus, what I see here are a bunch of close-minded luddites afraid of new things, and determined to block those new things from happening.

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First SLS launch faces more delays

11:15 am

No surprise here: The scheduled June 2020 first unmanned launch of NASA’s Space System Launch (SLS), already delayed by three years, appears threatened by more delays.

[NASA needs to perform]a similar structural test of the liquid oxygen fuel tank before what is known as a “green run” test. For this exercise, NASA will assemble the two large tanks and then integrate them with the rocket’s four main RS-25 engines. Then, at a test stand in southern Mississippi, the rocket will fire its engines through a standard launch of the rocket.

NASA has yet to formally set a date for this “green run” test, but whenever it does occur will be a key indicator for when we will see the first actual launch of the SLS rocket. If the green run test is conducted late in 2019, there would still be a chance for a 2020 launch. However, the agency and its prime contractor for the core stage, Boeing, are on a tight timeline that has little margin for technical problems that might occur during the structural tests of the tank or the green run tests. Historically, during this integration and test process with other large rocket programs, major problems have often occurred.

It is not clear how deeply the shutdown affected the SLS timeline, even though core stage work did proceed. “The shutdown impacted at least day for day,” one source said of the schedule. “But I am sure it was more than that.”

NASA originally planned to launch the SLS rocket on its maiden flight in November 2017, so the rocket will now be at least three years later than originally anticipated. The program’s budget is more than $2 billion a year, so these delays have cost the agency considerably.

The article also outlines the problems NASA is having developing the rocket’s upper stage.

I predict that the June 2020 launch will slip, maybe as much as six months, into 2021. This means the first manned flight will also be delayed into 2024, at the earliest.

That means it will have taken NASA more than twenty years and more than $60 billion to build and fly a single manned mission. Moreover, the cost and difficulty of operating SLS will make it impossible to get the second manned flight off the ground any earlier than three to four years later, at the earliest.

There is no chance the U.S. will put new footprints on the Moon if it continues to rely on this boondoggle. Worse, a continued reliance on SLS will force the government, for political reasons, to use its power to squelch competing private efforts, something we are seeing with the endless delays NASA has imposed on the commercial crew program.

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Auditor condemns Ariane 6

10:30 am

Capitalism in space: France’s independent government auditor has issued a new report that badly slams Arianespace’s next generation rocket, Ariane 6, accusing its design as being too cautious and too expensive, thus guaranteeing it will fail to compete with the reusable rockets now in use as well as being developed in the U.S.

This is the scathing assessment of France’s independent state auditor in a report that picked apart the flawed economic model behind Ariane 6, the next generation of rocket-launchers set to start operating in 2020.

It made the point that Europeans, who have taken part in developing the launcher, went for a “cautious” approach and invested in the kind of controlled technology that potential clients in the continent had no faith in, even back in 2014. This means that Ariane 6 is stuck in the past and “risks not being competitive over the long term.” Its U.S. rivals are way ahead and already testing future disruptive technologies. [emphasis mine]

The highlighted text is proven by the apparent unwillingness of Arianespace’s European partners to sign contracts for Ariane 6.

This isn’t really news. See for example this February 13, 2018 report on Behind the Black. Or this one from September 2017, where ArianeGroup first outlined the prices they expected to charge for Ariane 6. Then, I predicted what France’s auditor has only now realized:

Will these prices be competitive in 2020s? I have my doubts. I estimate, based on news reports, that SpaceX is charging about $40 million today for a launch with a reused first stage, and $62 million for a launch with an entirely new rocket. Give them another five years of development and I expect those prices to drop significantly, especially as they shift to entirely reused first stages for almost every launch and begin to demonstrate a routine launch cadence of more than one launch per month.

This quote…explains how ArianeGroup really intends to stay alive in the launch market: “The price targets assume that European governments — the European Space Agency, the European Commission, Eumetsat and individual EU nations — agree to guarantee the equivalent of five Ariane 62 missions per year, plus at least two missions for the light-lift Vega rocket.”

In other words, ArianeGroup really doesn’t wish to compete for business. It wants to use government coercion to force European space agencies and businesses to buy its product. They might get that, but the long term result will be a weak European presence in space, as everyone else finds cheaper and more efficient ways to do things. [emphasis mine]

Based on recent stories, it seems that ArianeGroup has been unable to force European space agencies to buy Ariane 6. Thus, the rocket faces failure, before it even launches.

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A look at SpaceX’s upcoming launch schedule

10:02 am

Link here. It appears that the launch dates for both Falcon Heavy launches depend entirely on when the first Falcon 9 manned Dragon test flight takes place.

With Demo-1 having priority, the final preparations for Arabsat [using Falcon Heavy] will not be able to begin until the Demo-1 launch has occurred as there is only so much space in the Pad 39A hangar. With that in mind, Arabsat 6A will likely occur in the second half of March at the earliest, as NASA announced on Wednesday that Demo-1 is now targeting no earlier than March 2nd, 2019.

While the March 2nd launch date for Demo-1 is still tentative, it is understood that the Space Station’s Visiting Vehicle Schedule does have availability for a launch on that date should the NASA and SpaceX teams be ready.

Once Demo-1 and Arabsat are out of the way, Pad 39A will not be done supporting high profile missions. SpaceX will work to quickly turnaround the first stage boosters from the Arabsat 6A flight in order to reuse them for the STP-2 mission – the second Falcon Heavy launch of the year. STP-2 is a mission for the U.S. Air Force which will feature several technology demonstration payloads. According to FCC filings, the launch is currently scheduled for no earlier than April 30th, 2019. However, since this mission requires boosters from the Arabsat 6A launch, SpaceX will require several weeks between the two flights to refurbish the cores.

Therefore, STP-2 is directly connected to the launch schedule for Arabsat 6A which is in turn connected to Demo-1’s schedule. Consequently, the odds of a slip with STP-2’s date are high, as two major dominos currently stand in front of it.

In addition, the date for SpaceX’s launch abort test of Dragon depends entirely on the completion of the Demo-1 flight, since they plan to use that same capsule in the abort test.

Though there are a handful of other launches described in the article through April, but much of SpaceX’s schedule for the spring depends entirely on whether NASA can get off its duff and allow the Dragon test mission to fly. If NASA continues to drag its feet, everything else will get delayed. It would seem that at some point SpaceX might even have the right to demand financial compensation from NASA for the loss of income NASA is causing it. They don’t get paid for any of these launches until they fly, and thus NASA is preventing them from earning money from other customers.

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New Hubble images of Uranus and Neptune

9:28 am

Uranus (top) and Neptune

The Hubble Space Telescope’s new annual images of Uranus (top) and Neptune (bottom) has revealed new atmospheric features for both, a giant north pole cloud cap on Uranus and a new dark storm developing on Neptune.

For Neptune:

The new Hubble view of Neptune shows the dark storm, seen at top center. Appearing during the planet’s southern summer, the feature is the fourth and latest mysterious dark vortex captured by Hubble since 1993. Two other dark storms were discovered by the Voyager 2 spacecraft in 1989 as it flew by the remote planet. Since then, only Hubble has had the sensitivity in blue light to track these elusive features, which have appeared and faded quickly. A study led by University of California, Berkeley, undergraduate student Andrew Hsu estimated that the dark spots appear every four to six years at different latitudes and disappear after about two years.

Hubble uncovered the latest storm in September 2018 in Neptune’s northern hemisphere. The feature is roughly 6,800 miles across.

For Uranus:

The snapshot of Uranus, like the image of Neptune, reveals a dominant feature: a vast bright cloud cap across the north pole.

Scientists believe this feature is a result of Uranus’ unique rotation. Unlike every other planet in the solar system, Uranus is tipped over almost onto its side. Because of this extreme tilt, during the planet’s summer the Sun shines almost directly onto the north pole and never sets. Uranus is now approaching the middle of its summer season, and the polar-cap region is becoming more prominent. This polar hood may have formed by seasonal changes in atmospheric flow.

The images are part of an annual program that monitors both planets with images every year when the Earth is best placed to view them. This allows scientists to track atmospheric changes over time.

The sharpness of both images matches that of previous Hubble images, so these photographs do not show any decline in the telescope’s image capability. However, when they lose that next gyroscope and shift to one gyroscope mode, I believe it will be very difficult to get images even this sharp of the outer planets. In fact, I suspect this monitoring program will likely have to end, or will be badly crippled.

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UK names rover for 2020 ExMars mission

9:01 am

The United Kingdom has named its rover for 2020 ExMars mission in honor of Rosalind Franklin, one of the scientists who contributed to the discovery of the helix structure of DNA.

Franklin is best known for her work on the X-ray diffraction images of DNA. Her data was a part of the data used to formulate Crick and Watson’s 1953 hypothesis regarding the structure of DNA. Unpublished drafts of her papers show that she had determined the overall B-form of the DNA helix. Her work supported the hypothesis of Watson and Crick and was published third in the series of three DNA Nature articles. After finishing her portion of the DNA work, Franklin led pioneering work on the tobacco mosaic and polio viruses. Franklin died from ovarian cancer at the age of 37, four years before Crick, Watson and Wilkins were awarded the Nobel Prize in 1962 for their work on DNA.

Though this isn’t entire clear from the press release, it appears that they will refer to the rover as either “Rosalind Franklin” or “Rosalind.”

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NASA confirms new Dragon launch date

12:29 pm

Confirmed: NASA today announced a new launch date, March 2, for the first unmanned test flight of SpaceX’s manned Dragon capsule.

The agency now is targeting March 2 for launch of SpaceX’s Crew Dragon on its uncrewed Demo-1 test flight. Boeing’s uncrewed Orbital Flight Test is targeted for launch no earlier than April.

These adjustments allow for completion of necessary hardware testing, data verification, remaining NASA and provider reviews, as well as training of flight controllers and mission managers.

This is actually the first time that NASA itself has specified a launch date, which suggests to me that they finally have admitted that they cannot hold things up any longer. Based on this announcement and assuming the weather and everything else cooperates, the launch will likely happen then, which will also allow time for SpaceX to get the launchpad reconfigured for its Falcon Heavy launch a week later.

The announcement also listed the remaining test schedule for commercial crew, as it stands now:

  • SpaceX Demo-1 (uncrewed): March 2, 2019
  • Boeing Orbital Flight Test (uncrewed): NET April 2019
  • Boeing Pad Abort Test: NET May 2019
  • SpaceX In-Flight Abort Test: June 2019
  • SpaceX Demo-2 (crewed): July 2019
  • Boeing Crew Flight Test (crewed): NET August 2019

The manned flights have not been pushed back significantly from the dates that NASA announced in October, June for SpaceX and August for Boeing. I would expect that the delays now will force these dates to get delayed as well.

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One smallsat satellite company hires another

10:07 am

Capitalism in space: One smallsat satellite company, Exolaunch, has hired another smallsat company, Momentus, to provide it with in-space transportation capabilities.

Exolaunch, the German launch services provider formerly known as ECM Space, signed a contract to pay in-space transportation startup Momentus more than $6 million to move satellites in low Earth orbit in 2020 with a service called Vigoride and from low Earth to geosynchronous orbit in 2021 with Vigoride Extended.

With Vigoride, Exolaunch will send “cubesat and microsatellite constellations to multiple orbits, giving clients an unprecedented flexibility of satellite deployment, reducing the price of launch, and giving access to orbits not typical for ridesharing vehicles,” Dmitriy Bogdanov, Exolaunch chief executive, said in a statement. “We also plan to deliver smallsats to geosynchronous orbit using the Vigoride Extended service. Momentus will enable us to service a larger segment of the market by enabling our customers to reach custom orbits in an efficient and cost-effective manner.”

Essentially, Momentus is building a cubesat-sized rocket engine that can be used to transport other cubesats from one orbit to another. The engine apparently uses water as the fuel in a ion-type engine, and will be tested in space for the first time in the next few months.

Momentus’s business plan seems quite clever. Up until now smallsats, especially those launched as secondary payloads, have not had a way to change their orbits, once deployed from their rocket. Momentus is offering this capability, at the very moment we are about to see a boom in the number of smallsats launched.

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Hayabusa-2 to attempt asteroid landing on February 22

9:50 am

JAXA, Japan’s space agency, today announced that Hayabusa-2 will attempt a landing on the asteroid Ryugu on February 22.

The landing was delayed from October because of the unexpected roughness of Ryugu’s surface, which literally has no spot smooth enough and large enough for Hayabusa-2, as planned. This landing will therefore be attempted in one of two places that are almost large enough, but not quite. It thus carries some additional risks.

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Chinese cubesat snaps picture of Earth and Moon from deep space

9:21 am

The Moon and Earth

A interplanetary cubesat, Longjiang-2, launched with China’s communications relay satellite that they are using to communicate with Chang’e-4 and Yutu-2 on the far side of the Moon, has successfully taken a picture of both the Moon and Earth, as shown in the picture on the right.

Longjiang-2 is confirming what the MarCo cubesats proved from Mars, that cubesats can do interplanetary work.

And the picture is cool also. This was taken on February 3, when the entire face of the Moon’s far side is facing the Sun, illuminating it all. This timing also meant that the globe of the Earth would be entirely lit.

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LRO photographs Chang’e-4 on lunar surface

9:00 am

Chang'e-4 on the lunar surface

The Lunar Reconnaissance Orbiter (LRO) science team has released a spectacular oblique image that shows Chang’e-4 on the floor of Von Kármán crater.

Four weeks later (30 January 2019), as LRO approached the crater from the east, it rolled 70° to the west to snap this spectacular view looking across the floor towards the west wall. Because LRO was 330 kilometers (205 miles) to the east of the landing site, the Chang’e 4 lander is only about two pixels across (bright spot between the two arrows), and the small rover is not detectable. The massive mountain range in the background is the west wall of Von Kármán crater, rising more than 3000 meters (9850 feet) above the floor.

The image on the right has been reduced to post here. If you click on it you can see a larger version, but you need to download a very large file at the above link to see it at full resolution.

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Boeing partners with commercial supersonic jet startup

2:36 pm

Boeing today announced that it is partnering with startup Aerion Corp to build a 12-passenger commercial supersonic jet, dubbed the AS2.

Boeing said it would provide engineering, manufacturing and flight-test resources to bring the AS2 to market. The amount of the investment wasn’t disclosed.

The first flight for the plane — which, at about 1,000 miles per hour, will cruise 70 percent faster than today’s quickest business jets — is scheduled for 2023. Launch customer Flexjet, a fractional aircraft operator, has ordered 20 of the models. The 12-passenger aircraft has a list price of $120 million.

This isn’t the first or only private effort going on right now to develop supersonic jets for commercial travel. Another company, Boom Supersonic, has raised significant capital and already has its own orders for planes, though as far as I can tell it did not fly its initial test flights in 2018, as they had promised.

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MarCO interplanetary cubesats likely dead

2:29 pm

More than two months after they provided relay communications for the landing of InSight on Mars, and more than a month since any contact has been heard from them, engineers now consider the two MarCO cubesats to likely be dead.

Now well past Mars, the daring twins seem to have reached their limit. It’s been over a month since engineers have heard from MarCO, which followed NASA’s InSight to the Red Planet. At this time, the mission team considers it unlikely they’ll be heard from again.

MarCO, short for Mars Cube One, was the first interplanetary mission to use a class of mini-spacecraft called CubeSats. The MarCOs – nicknamed EVE and WALL-E, after characters from a Pixar film – served as communications relays during InSight’s landing, beaming back data at each stage of its descent to the Martian surface in near-real time, along with InSight’s first image. WALL-E sent back stunning images of Mars as well, while EVE performed some simple radio science.

All of this was achieved with experimental technology that cost a fraction of what most space missions do: $18.5 million provided by NASA’s Jet Propulsion Laboratory in Pasadena, California, which built the CubeSats.

WALL-E was last heard from on Dec. 29; EVE, on Jan. 4. Based on trajectory calculations, WALL-E is currently more than 1 million miles (1.6 million kilometers) past Mars; EVE is farther, almost 2 million miles (3.2 million kilometers) past Mars.

Their loss of contact more than a month after the November landing of InSight actually shows their incredible success. Both MarCO cubesats functions well past Mars, demonstrating that these tiny satellites can do much of the same things bigger satellites costing billions do.

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