Tag: SpaceX

SpaceX wins partial approval to provide Starlink service in Canada

10:05 am

Capitalism in space: Though SpaceX has obtained permission to provide its Starlink internet service from Canada’s Radio-television and Telecommunications Commission, similar to the U.S.’s FCC, it still has not gotten full government approval to begin offering its service to customers.

It appears a different Canadian regulatory body, dubbed Innovation, Science and Economic Development Canada (ISED), has still not given its okay of the “satellite spectrum” SpaceX requires. From the second link:

SpaceQ had previously contacted ISED in June about SpaceX. ISED wouldn’t comment directly on any application, but did tell SpaceQ that the applications and approved website pages were up to date at that time. The website had last been updated in May. Since then, the website was updated in July. And yet there’s still no mention of SpaceX. It’s my understanding that the specific pages with applications and approvals is updated pretty quickly when there is new information to post. Though it took 3 weeks for changes to appear after Kepler submitted their application in June of this year.

With respect to how long it takes to get approval, ISED said the “service standard for the processing of satellite applications, including for those for foreign satellites, is 130 calendar days.” It’s quite possible that it could take longer.

This description carries all the hallmarks of a typical government bureaucracy whose only purpose is to block new companies and new technology. The political swamp of Canada might also be using it as a means of extortion for campaign funds from SpaceX. “Nice business you got there. Sure would be a shame if it didn’t get that license approval.”

I don’t think SpaceX needs to bow to these games. In the end ISED will back down and give approval, especially when the company begins offering its services just over the border in the U.S. The competitive and political pressure to give its okay will then be too great.

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SpaceX completes static fire test on Starship prototype #8

9:09 am

Capitalism in space: SpaceX last night successfully completed the static fire test on its eighth Starship prototype, for the first time firing three Raptor engines simultanously.

Video of the test, cued to just before ignition, is embedded below the fold.

The company will now install the nosecone on the prototype, repeat this static fire test again in about a week, and then prepare it for its first flight, an expected 50,000 foot hop. I expect that hop to occur in early to mid-November, about the same time the next manned Dragon flight will occur.

» Read more

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SpaceX launches another 60 Starlink satellites

10:18 am

Capitalism in space: SpaceX today successfully launched another 60 Starlink satellites, raising the constellation to more than 800 satellites.

The first stage successfully landed, for the sixth time, on a drone ship. The company also recovered both fairings, which were making their third flight. With one fairing’s recovery however the net broke on the ship, which might have damaged it this time.

The leaders in the 2020 launch race:

26 China
17 SpaceX
11 Russia
4 ULA
4 Europe (Arianespace)

The U.S. had regained the lead over China, 27 to 26, in the national rankings.

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HBO to create six-part “scripted” series on Musk and SpaceX

10:36 am

Where NOT to get your facts about SpaceX’s history: HBO today announced that it is going to create a six-part “scripted” drama series describing the history of Elon Musk and SpaceX.

In terms of story, the small-screen narrative will follow Musk as he develops the first SpaceX rocket and launches it into orbit with a handpicked team of engineers on a remote island in the Pacific. His dream of humanity colonizing the universe takes one step closer to reality with the first (and successful) manned Falcon 9/Crew Dragon mission on May 30, 2020. The participating NASA astronauts, Bob Behnken and Doug Hurley, have since returned to Earth from the International Space Station.

From my experience writing non-fiction screenplays for cable television when I was still in the movie business, I can guarantee that this drama will have very little connection to reality, and is more likely to get numerous basic facts wrong. It will thus accomplish nothing but to misinform anyone who watches it.

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SpaceX begins installing Raptor engines on Starship prototype #8

9:47 am

Capitalism in space: With Starship prototype having successfully passed its tank tests SpaceX has begun installing three Raptor engines in preparation for static fire tests followed by a 50,000 foot high hop.

Once the Raptors are installed, Starship SN8 is expected to undergo an extensive test program, opening with fueling tests, a spin prime test, and preburner tests, before the first Static Fire test.

That opening Static Fire test will be the first time three Raptors have been fired up simultaneously.

Once that opening Static Fire test has been completed, a data review will be conducted on engine performance and related systems – such as the Ground Support Equipment (GSE) – which will allow the nosecone to be installed on to SN8 at the launch site.

At that point the prototype will be ready for its hop. Based on the pace SpaceX is setting (and assuming all goes well), this flight should occur sometime in the next month, possibly at almost the same time as the next manned Dragon flight to ISS.

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Next manned Dragon launch delayed

11:54 pm

Because of an engine issue that caused Falcon 9 launch of a military GPS satellite to abort at T-2 seconds on October 2nd, SpaceX and NASA have decided to delay the next manned Dragon launch from October 31st “to early-to-mid November.”

The one to two week delay will give the company time to analyze the issue involving an “unexpected pressure rise in the turbomachinery gas generator” that are used to drive the rocket’s Merlin engine turbopumps.

It seems unlikely that this problem is systemic to all Merlin engines, considering the number of rocket launches SpaceX has successfully completed in the last four years. Each launch has used ten engines, with no evidence of this problem appearing previously.

At the same time, no one wants a problem on a manned flight. Better to completely understand why it happened on the GPS launch first before launching four astronauts on the rocket.

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Starship prototype #8 passes tank tests; engine installation next

9:15 am

Capitalism in space: SpaceX’s eighth Starship prototype has passed its tank, thruster, and even fin tests, setting it up for the installation of its three Raptor engines.

Once installed, they will perform several static fire tests, on the launchpad. If those tests are successful, the company will then proceed with a full 50,000 foot test flight. Based on the pace of operations, my guess is that this hop will occur in about two to four weeks.

I’ve embedded one of the videos at the link below the fold, showing a variety of activity at the site.

In other SpaceX news, the Tesla that was put in solar orbit on the first Falcon Heavy test launch has just made its first “fly-by” of Mars, getting to within 5 million miles of the red planet. At that distance the planet really isn’t very close, which is why I put the word fly-by in quotes. That Tesla’s future:

The Roadster will eventually barrel into either Venus or Earth, likely within the next few tens of millions of years, a 2018 orbit-modeling study determined . But the chances of an Earth or Venus impact in the next million years are just 6% and 2.5%, respectively.

» Read more

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Musk: Starlink about to roll out commercial service

9:37 am

Capitalism in space: With the launch earlier this week of another 60 Starlink satellites, Elon Musk has revealed that they now have enough satellites in orbit to soon begin commercial operations.

After yesterday’s launch of 60 Starlink satellites, SpaceX CEO Elon Musk wrote on Twitter that “[o]nce these satellites reach their target position, we will be able to roll out a fairly wide public beta in northern US & hopefully southern Canada. Other countries to follow as soon as we receive regulatory approval.”

Musk did not say when the satellites will reach their target position. SpaceX has over 700 satellites in orbit after yesterday’s launch.

It will like take a few months to get these satellites into position. Regardless, the speed at which SpaceX operates once again has put them ahead of their competitors. OneWeb, the only other similar constellation with satellites in orbit, was once far ahead of SpaceX but has been stalled as it recovers from bankruptcy. Amazon’s Kuiper satellite constellation is so far only a proposal, and like most everything else the company said it would build, has moved forward with the speed of a glacier.

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Military considering using Starship for point-to-point transportaion

9:13 am

Capitalism in space: The U.S. military has begun a study in partnership with SpaceX on whether it will be possible to use Starship as a cargo ship for moving large shipments from point-to-point on the Earth.

Army Gen. Stephen Lyons, commander of U.S. Transportation Command, announced the agreement Oct. 7 at a National Defense Transportation Association virtual conference. “Think about moving the equivalent of a C-17 payload anywhere on the globe in less than an hour,” Lyons said. The C-17 is a very large military cargo plane capable of transporting a 70-ton main battle tank.

Makes sense. This decision also suggests the military is impressed with SpaceX’s progress on Starship, and has also largely abandoned its earlier skepticism of the company.

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Radio astronomers claim negative impact from satellite constellations

10:35 am

Put them on the Moon! Radio astronomers have released a paper claiming that the coming large communication satellite constellations, such as Starlink and OneWeb, will seriously impact observations with the Square Kilometer Array (SKA) of radio telescopes being built in the remote western outback of Australia.

Saturation of the instruments: very strong interfering signals can saturate the receiver systems and thereby drown out all other signals seen by the Band 5b receivers. As a consequence, all data in that frequency band would be lost, rendering these receivers useless for a portion of the time. For the first phase of the constellation deployments (about 6,400 satellites in total), saturation is predicted to occur for a few percent of the time assuming there is no direct illumination of the dishes by the satellites. For significantly larger constellation sizes (up to more than 100,000 satellites), saturation would be essentially continuous without significant mitigation measures implemented by the satellite operators.

Based on this conclusion, the astronomers estimate that for observations in this particular band they will need to look about 70% longer to get the same data, thereby cutting the number of observations by about half.

The astronomers propose this solution:

One of these mitigation techniques is for the satellite transmitters not to point their beams near the SKAO dishes. SKAO would require operators to steer their satellites’ beams away from the telescope site, a measure which would require a simple software modification with no repercussion on the constellation’s deployment, positioning or hardware. While a cost-effective implementation of this solution does depend on the hardware and software deployed on the satellites, operators already use this technique to comply with international regulations when their satellites cross the path between geostationary satellites in higher orbit and their receiving ground stations, for example to avoid affecting telecommunications and TV transmissions.

This mitigation could reduce the impact on the SKA by a factor of 10 over that noted previously and result in a 7% increase of integration time for SKA observations within the satellite transmission range 4. While any loss of sensitivity is regrettable, SKAO recognises the need for compromise between the competing scientific and commercial drivers.

The solution seems reasonable, but in truth it is only a temporary one. The permanent and smart solution for the astronomical community is to move their telescopes, in all wavelengths, off the Earth. For radio astronomy the far side of the Moon would be ideal.

And with SpaceX now developing a reusable big rocket, Starship, to put such payloads in orbit at low cost, the astronomers need to start thinking about taking advantage of this engineering. The situation for ground-based astronomer will only get worse.

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Musk to personally review SpaceX launch procedures

8:51 am

Capitalism in space: As a result of the spate of launch aborts in the past few weeks, the head of SpaceX, Elon Musk, is now planning a personal review of the company’s launch facilities in Florida next week.

Musk would like SpaceX to increase its cadence such that it can reach 48 launches in 2021, which would more than double the company’s previous record for total number of missions in a single year. Technical scrubs like the ones this week would prevent this. Achieving frequent launches will require smooth operations.

“We’re doing a broad review of launch site, propulsion, structures, avionics, range & regulatory constraints this weekend,” Musk tweeted. “I will also be at the Cape next week to review hardware in person.”

This review aligns with the company’s entire strategy regarding rocketry. Instead of accepting such aborts as the cost of doing business, Musk wants to review procedures to see if launches can be made more reliable.

Musk’s statement that they want to be able to do 48 launches next year is most intriguing, as it suggests, based on their manifest of launches, that they are going to launch a lot of Starlink satellites.

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SpaceX launches another 60 Starlink satellites

8:20 am

After a number of weather delays, SpaceX this morning finally launched another 60 Starlink satellites into orbit, using its Falcon 9 rocket.

They also successfully landed the 1st stage, on its third flight, the 61st time they have done this. One fairing half was also making its third flight, and was also recovered. I have embedded the live stream of the launch below the fold.

The leaders in the 2020 launch race:

25 China
16 SpaceX
10 Russia
4 ULA
4 Europe (Arianespace)

The U.S. has retaken the lead from China, 26 to 25, in the national rankings.
» Read more

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Antares launches; Falcon 9 aborts

8:55 pm

Of the two launches scheduled for tonight, Northrop Grumman’s Antares rocket was the only one to launch, lifting off on schedule at 9:16 pm (Eastern). This was the company’s third launch this year.

SpaceX’s launch however aborted at T-2 seconds. No word on why the rocket’s computer’s shut down, or when they will reschedule.

The leaders in the 2020 launch race remain unchanged:

25 China
15 SpaceX
10 Russia
4 ULA
4 Europe (Arianespace)

The Antares launch however puts the U.S. back into a tie with China, 25-25, in the national rankings.

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Two launches scheduled for tonight, 27 minutes apart

9:08 am

The numerous launch scrubs this past week has created an unprecedented situation tonight, two orbital launches scheduled only 27 minutes apart from two different East Coast spaceports.

First Northrop Grumman will try again to launch its Cygnus cargo freighter to ISS from Wallops Island, Virginia, with the launch scheduled for 9:12 pm (Eastern). The first launch attempt last night was aborted 2:21 seconds before liftoff “after receiving off-nominal data from ground support equipment.”

Second, SpaceX will try to launch two Air Force GPS satellites from Cape Canaveral, Florida, with the launch scheduled for 9:43 pm (Eastern). This launch has been delayed several times because of the repeated launch scrubs of ULA’s Delta 4 Heavy rocket, attempting to launch a military reconnaissance satellite. ULA’s launch had priority for the range, but with it delayed due to the investigation over the T-7 second launch abort on September 30th, the SpaceX’s GPS launch moves up in line.

The first will be live streamed on NASA TV, the second by SpaceX. I have embedded the live streams for both below the fold.
» Read more

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Starship prototype #8 on launchpad

10:19 am

Capitalism in space: The eighth Starship prototype, with landing flaps (looking just like fins) has now been moved to its launchpad in preparation for static fire tests followed by a 50,000 foot or nine mile hop.

According to Elon Musk, SpaceX will static fire SN8 twice before attempting its 15 km (~50,000 ft) launch debut. More likely than not, SpaceX will attempt a triple-engine static fire with the Starship as-is, install SN8’s nosecone and forward flaps, and attempt a second static fire while only drawing propellant from tbe rocket’s smaller header tanks (one of which is located in the tip of its nose).

Previously the hop was supposed to go to 60,000 feet, or 11 miles. It appears they’ve scaled it back slightly.

If all these tests go well, the company’s license for the flight opens as soon as October 11th, though it is likely it will not happen quite that soon. More likely by the end of the month, or early in November. Regardless, the prototype looks quite impressive with its flaps, and in fact is now beginning to resemble a spaceship, not a silo.

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Crew for next Dragon manned flight name capsule “Resilience”

10:11 am

Capitalism in space: The crew for next Dragon manned flight, scheduled now for October 31st, have given the capsule the name “Resilience.”

Before arriving at Resilience, Hopkins and his crewmates filled a whiteboard with a long list of “good ideas” for their spacecraft’s name and then narrowed down their choices, he said.

“We wanted to make sure that the name fit,” Hopkins said in an interview with collectSPACE, following Tuesday’s press conference. “We got it down to two or three names and they were all very close in terms of that we liked them and could have been really happy with them, [but] at the end of the day, it was the one that just felt right.”

The crew of the first Dragon manned capsule named it Endeavour, to honor the shuttle spacecraft they had both flown in. The names of these capsules is not merely symbolic. Both capsules will be reused, like the shuttles, and thus deserve names to mark them when they fly again.

What is not clear yet is exactly how many capsules SpaceX will build, nor exactly how many times each capsule will be reused. The latter will of course help determine the former. It will take a few years and multiple flights to find out. Eventually however SpaceX will have its own fleet of manned spaceships, available not only to NASA but to private customers.

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SpaceX launch aborts at T-18 seconds

9:00 am

Capitalism in space: SpaceX’s attempt to launch another 60 Starlink satellites today aborted at T-18 seconds due to what they called “out-of-family ground sensor reading.”

They have not announced a new launch date as yet.

The U.S. has had little luck getting any of its launches off in the past month. Many have been delayed or scrubbed, for either technical reasons or weather. Hopefully tonight’s launch of Northrop Grumman’s Cygnus cargo freighter to ISS will avoid these issues and get off the ground.

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Changes in engineering and procedures for next manned Dragon flight

4:27 pm

SpaceX is making several engineering and operational changes involving flights of its manned Dragon capsule, based on the company’s experience during the first manned flight several months ago.

First, they are reinforcing the heat shield in one area.

After a successful test flight that ended when NASA astronauts Bob Behnken and Doug Hurley splashed down in the Gulf of Mexico on Aug. 2, the company noticed “a little more erosion than we wanted to see” in a few areas of the capsule’s heat shield, Hans Koenigsmann, SpaceX’s vice president of build and flight reliability, said during a press call this week. He said there “was nothing to be concerned with at all times. The astronauts were safe, and the vehicle was working perfectly.”

Second, they are revising the software used to determine the altitude when the capsule’s drogue parachute is released.

Koenigsmann said the company is refining how it measures the capsule’s altitude as it returns to Earth. During the August test flight, the drogue parachutes deployed at a slightly lower altitude than the company expected, but still well within safety parameters, he said.

Finally, they are going to more strictly enforce a 10-mile “keep-out zone” in the ocean where the capsule splashes down. They do not want to see another crowd of recreational boats swarming the landing zone, as happened when the capsule returned to Earth in August.

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NASA & SpaceX set Oct 31st for next manned Dragon mission

9:22 am

Capitalism in space: NASA and SpaceX have now scheduled Oct 31st as the target launch date for the first operational manned Dragon mission to ISS, the second manned Dragon mission overall.

This new date delays the launch a week from the previous announced schedule, and was done to give some space between its launch and the launch of a manned Soyuz on October 14th and the return of a different Soyuz with the present ISS crew on October 21st.

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China and Russia launch a bunch of satellites

8:40 am

Russia today used its Soyuz-2 rocket to launch three communication satellites plus 19 commercial smallsats.

This was the first time Russia used the Soyuz-2 for these particular small communications satellites, as previously they had been launched by a variety of smaller rockets.

China in turn today used its Long March 4B to place two Earth resource satellites into orbit.

The leaders in the 2020 launch race:

25 China
15 SpaceX
10 Russia
4 ULA
4 Europe (Arianespace)

China has moved ahead of the U.S. 25 to 24 in the national rankings.

These numbers should change again in the next few days. The U.S. has had a number of scrubs and launch delays in the past few days. ULA has been repeatedly pushing back the previously delayed launch of a National Security Agency reconnaissance satellite due to a variety of problems related to its Delta 4 Heavy rocket. The launch is now set for just after midnight tonight (Monday night). [UPDATE: Launch scrubbed due to lightning and poor weather. Tentatively rescheduled for 11:58 pm (Eastern) on September 29.]

SpaceX meanwhile had to scrub a launch this morning (September 28) of another 60 Starlink satellites due to weather. No new launch date has yet been announced.

Northrop Grumman also has had to scrub tomorrow’s Antares launch of a Cygnus cargo freighter because of poor weather at Wallops Island. It is now set for the evening of October 1st.

SpaceX also has a scheduled launch tomorrow morning of a GPS satellite on its Falcon 9 rocket. This is also threatened by weather. There is also no word whether the ULA launch scrub will cause this launch to be delayed.

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SpaceX destroys Starship prototype #7, as planned

12:46 pm

Capitalism in space: SpaceX last night successfully pressurized its seventh Starship prototype to failure, as planned.

The culmination of three nights and more than 20 hours of concerted effort, SpaceX was finally able to fill Starship test tank SN7.1 with several hundred tons of liquid nitrogen before dawn on September 23rd. With just an hour left in the day’s test window, SpaceX closed the tank’s vents, allowing its cryogenic contents to boil into gas and expand with no outlet. At 4:57 am CDT, SN7.1 burst, bringing its lengthy test campaign to a decisive end.

I have embedded video of the test below the fold.

With the completion of this test the way is now clear for the 60,000 foot hop of Starship prototype #8, no earlier than October 11th.
» Read more

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Axiom, SpaceX, and NASA finalizing first wholly private manned mission

12:38 pm

Capitalism in space: Axiom, SpaceX, and NASA are close to finalizing the deal for the first wholly private manned mission to ISS, tentatively set for October 2021.

One of the topics Axiom is negotiating with NASA involves how much insight the space agency will have into the private astronaut mission. While the Axiom missions will be managed by commercial companies, the AX-1 flight will fly with a reusable Crew Dragon spacecraft that will carry NASA astronauts on other missions. “There’s a certain amount of insight (NASA) would like on our flight, on a commercial flight,” [Axiom official] Suffredini said Friday. “So that is one aspect of that process. We’re using a vehicle that is going to be re-flown, and NASA will certify the re-flights because they want to do re-flights.”

Axiom and SpaceX will also have to confirm a schedule with NASA for the AX-1 mission to dock with the space station. The orbiting research complex has a busy schedule of arriving and departing crew and cargo vehicles, and managers also have slot in spacecraft dockings amid spacewalks, experiments, and other critical operations.

NASA also oversees safety of the space station with the program’s international partners.

The private companies however will in the end be responsible for the flight.

There have been rumors that the passengers on this flight will be Tom Cruise and his film director, though this is not confirmed. Also, these same arrangements will be used for the tentative 2023 private flight of the winner of a proposed reality television show dubbed Space Hero.

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The first Starlink user test results

9:50 am

Capitalism in space: The first Starlink test results by actual users are finally coming out, and they suggest that the constellation will deliver very fast internet speeds indeed.

The article however reveals this tidbit that up until now SpaceX has managed to keep nicely obscured:

While Starlink will provide the kind of speeds and latency that should work for many services and games, Musk said the company simply won’t have the capacity to compete in major metro markets—a caveat often left unmentioned in Starlink coverage. “It’s not good for high-density situations,” Musk said. “We’ll have some small number of customers in LA. But we can’t do a lot of customers in LA because the bandwidth per cell is simply not high enough.”

As a result, Starlink won’t do much for the estimated 83 million Americans stuck under a broadband monopoly (usually Comcast), or the millions more whose only options are a duopoly; usually either the cable company or a sluggish DSL line from the local phone company.

In other words, the service will likely not be made available in dense urban areas, at least not initially.

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SpaceX raises Falcon Heavy launch price for U.S. military

10:57 am

Capitalism in space: It now appears that SpaceX has significantly raised the price it is charging the U.S. military for its Falcon Heavy rocket

In winning the military’s new long term launch contracts, awarded to both SpaceX and ULA through 2026, SpaceX apparently doubled the Falcon Heavy price.

In 2018 he said the rocket would cost no more than $150 million to loft heavy payloads into orbit. But the award SpaceX received for a single mission in the first year of Phase Two was $316 million. That’s quite an increase.

The article is clearly one of those industry hit pieces against SpaceX. At the same time, I completely accept what it has found to be true. SpaceX no longer needs to undercut ULA by gigantic amounts to gain military contracts. Moreover, since the military decided to restrict bidding for all launches for the next five years to just these two companies, SpaceX has no reason to offer the same low prices it has in the past. All it needs to do is undercut ULA’s high prices by a little, and get the deal.

In a sense, it isn’t SpaceX’s fault the military will now have to pay so much. Blame our vaunted military bureaucracy, which choose to limit the competition to just two companies for the next five years. They are getting what they wanted, even if it ends up screwing the taxpayer.

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Reality show to fly contestant to ISS

10:35 am

Capitalism in space: A new reality show, dubbed Space Hero, will have audiences watch contestants compete to be a passenger on a private capsule, likely SpaceX’s Dragon, and fly to ISS for ten days.

The selected group of contestants will undergo extensive training and face challenges testing their physical, mental and emotional strength, qualities that are essential for an astronaut in space. I hear the idea is for the culmination of the competition to be in a an episode broadcast live around the world where viewers from different countries can vote for the contestant they want to see going to space. The show will then chronicle the winner’s takeoff; their stay at the ISS for 10 days alongside professional astronauts traveling at 17,000 mph, orbiting the Earth 16 times a day; and end with their return to Earth. The Space Hero company is currently in discussions with NASA for a potential partnership on STEM initiatives onboard the ISS.

The trip of the Space Hero winner is expected be on a SpaceX Dragon rocket though a launch provider is yet to be officially selected. Space Hero, billed as the first space media company, is working with Axiom Space, manufacturer of the world’s first privately funded commercial space station — a module for the ISS where the private astronauts can stay — and full-service human spaceflight mission provider.

The project seems more viable and realistic than previous such attempts, aided by the fact that tickets can now be purchased on a private and operational manned capsule.

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The frozen and changing mid-latitudes of Mars

12:51 pm

Glacial erosion on Mars
Click for full image.

Using “frozen” and “changing” to describe any single location might seem contradictory, but when it comes to the mid-latitudes of Mars, high resolution images keep telling us that both often apply, at the same time and at the same place.

The photo to the right, rotated, cropped, and reduced to post here, is a typical example. Taken on May 8, 2020 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), it shows what the scientists label as “mesas and ridges.” Drainage is to the south, and it sure looks like some sort of glacial flow is working its way downward within the canyons between those mesas.

Overall the terrain has the appearance of a frozen ice sheet, or at least terrain that has a shallow ice table close to the surface. It also looks like chaos terrain in its infancy, the erosion process not yet cutting down enough to make the mesas stand out fully.

The location of these mesas and ridges is shown in the context map below, which also shows that this location is at the same latitude as SpaceX’s Starship prime Martian landing site, and only about 400 to 500 miles to the east.
» Read more

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Next Starship test flight to go to 60,000 feet

9:15 am

Capitalism in space: SpaceX has decided, after two successful 500 foot hops using its fifth and sixth Starship prototypes, to forego further hops with those prototypes and instead test fly prototype number eight to a height of 60,000 feet, about 11 miles.

Starship SN5 and SN6 were set to become a tag-team, flying 150-meter hops to refine the launch and landing techniques that SpaceX has pioneered with its Falcon 9 rocket. However, with SN5’s hop proving to be a success, followed by a notable improvement with SN6’s leap to 150 meters a few weeks later, it’s likely SpaceX is now confident of advancing to the next milestone.

The company has applied for an FCC license to do the flight anytime from Oct ’20 to April ’21, with October 11th being the first available date.

In the meantime the company plans a pressure tank test to failure of prototype #7, probably later this week.

In other related news at the second link, Boeing and Firefly have also applied for FCC licenses, the former for a Starliner demo mission from November ’20 to May ’21, the latter for its first launch of its smallsat Alpha rocket, also from November ’20 to May ’21.

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Update on Starship development

9:01 am

Capitalism in space: Link here. The update outlines the status of Starship prototypes #5, #6, #7, #8, #9 as well as the first Super Heavy prototype, all of which are being prepped for future tests.

It is expected that #7 will be tested next, a tank pressure test intended to be tested to failure sometime in the next few weeks. The goal here is to obtain the engineering limits of the alloy being used in this particular prototype so that engineers will know how to use it in future builds.

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The icy Erebus Mountains near where Starship will land on Mars

2:20 pm

Overview of all SpaceX images in Arcadia Planitia

Glacial filled crater in Erebus Montes
Click for full image.

It has been several months since I posted any new photos of the region on Mars which SpaceX considers its prime candidate landing site for its Starship spacecraft/rocket, now under development. The map to the right shows the location of all the images that SpaceX has obtained from the high resolution camera on Mars Reconnaissance Orbiter (MRO) of this landing region, located in the northern lowland plains at the border between Arcadia and Amazonis and to the east of the Erebus Mountains. (See my post on November 13, 2019 for an analysis of the reasoning for SpaceX to choose this region, along with links to each of the numbered images.)

Time to take another look, this time at the very center of the southern cluster of the Erebus mountains. The crater to the right, its location indicated by the tiny red rectangle on the map above, was taken by MRO on May 6, 2020, and shows the typical glacial features scientists find in mid-latitude Martian craters. The floor appears filled with glacial material, with the repeated cyclical flows repeatedly coming down off the north-facing interior rim. That rim would generally be colder and get less sunlight, so snowfall is more likely to pile up there and then flow downward like a glacier, only to sublimate away once it moves out of shadow.

What makes these mountains enticing, only about 400 miles from the Starship landing zone, is not simply what is inside this crater, but what surrounds it. Below is the wider view provided by MRO’s context camera.
» Read more

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