Tag: SpaceX

Fifth Starship prototype flies!

5:33 pm

Starship #5 in flight
Shortly after take-off.

Right after landing
Right after landing.

Shortly after landing
After the smoke has cleared.

Capitalism in space: SpaceX’s fifth Starship prototype today successfully completed a 150 meter hop at its Boca Chica facility in Texas, landing vertically.

I have embedded a video of the flight below the fold.

The screen capture to the right shows it in flight. It is canted slightly because its one Raptor engine was not centered at its base but offset.

The next image shows the prototype standing vertical on the ground to the left of Starhopper, which flew one year ago. All told the flight lasted only about a minute.

The final image shows a close-up of the prototype after the smoke has cleared. Why it is canted on the ground is not clear. Its legs are not visible (they apparently are relatively small), so it is hard to say whether one buckled or not.

The launch platform might have sustained damage but they have another ready to go. It is even conceivable that they could fly this prototype again, though they already have prototype #8 waiting in the wings.

Regardless, expect SpaceX to keep its fast development pace going. I would not be surprised if they attempt another test flight in less than two weeks.

Screen captures courtesy of the LabPadre live stream.
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Starship hop today?

8:00 am

UPDATE: They are close to trying again. If you refresh your screen, you will now have two iterations of the live stream. This will allow you to have two cameras visible at the same time, You can show the main “nerdie” camera on one, with their commentary, and show the wider “sapphire” camera on the second. You pick cameras by clicking on the camera icon in the menu bar at the bottom of the screen.

UPDATE: First attempt apparently aborted. No word yet if they will attempt again today.

UPDATE: Scrubbed on August 3rd, attempting again on August 4th.

Capitalism in space: SpaceX’s Starship team has scheduled the first 500 foot hop of the fifth Starship prototype today, after canceling yesterday’s attempt.

The window for Starship SN5’s 150m hop debut now stretches from 8am to 8pm CDT (13:00-01:00 UTC) on Monday, August 3rd. It’s currently unknown if SpaceX will offer its own live coverage of the test flight but several unofficial streams will likely be available from NASASpaceflight.com, LabPadre, SPadre, and more. Stay tuned for updates!

I have embedded LabPadre’s live stream below the fold, if you wish to run it in the background. They will have commentary when they note a “pad clear” signal.
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Endeavour safely splashes down

11:52 am

Splashdown of Endeavour

Capitalism in space: SpaceX’s Endeavour Dragon capsule has successfully splashed down in the Gulf of Mexico, returning two humans back to Earth safely after completing the first two month long manned commercial space mission.

If you go to the live stream to watch recovery operations, note that the boats and ships and persons involved are all property and employees of SpaceX. This is entirely an operation of the private company. The government is not involved, other than NASA’s justified monitoring as SpaceX’s customer.

One cool tidbit for the future. Endeavour is scheduled to fly again, in the spring of 2021. On that flight will be Megan McArthur, the wife of astronaut Bob Behnken, and she will likely sit in the same place he did on his flight.

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Starship fifth prototype set for first 500 foot hop

10:39 am

Capitalism in space: SpaceX fifth Starship prototype has passed all of its static fire tests and is now ready for its first flight, a 500 foot vertical hop.

That hop should occur within days.

I have embedded a nice video that summarizes well all of the work being done right now at SpaceX’s Boca Chica facility in Texas, including the construction of large assembly buildings for both Starship and Super Heavy.
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Manned Dragon return on August 2nd threatened by weather

4:08 pm

Capitalism in space: The splashdown of SpaceX’s first manned Dragon capsule Endeavour on August 2nd is now threatened by weather.

Isaias officially became a named tropical storm on Wednesday night, when its wind speeds exceeded 39 mph. The storm could affect several landing areas just as Endeavour is supposed to reenter Earth’s atmosphere, deploy its parachutes, and splash into the Atlantic Ocean or Gulf of Mexico.

Three of the seven landing zones that SpaceX and NASA prescribed for the test mission, called Demo-2, lie within the “cone of probability” for the storm’s path. Those splashdown sites are located off the coasts of Cape Canaveral, Daytona, and Jacksonville, according to NASA. A July 30 map shows NASA and SpaceX’s landing zones for the Crew Dragon Demo-2 mission amid the estimated path and conditions of Tropical Storm Isaias. The outer-edge green shows a 5-10% chance of sustained tropical storm-force winds. Google Earth; NOAA; NASA; Business Insider

Depending on how large the storm grows and how nasty weather conditions become, mission managers may scrub the undocking and landing attempt. Steep waves, rain, lightning, low clouds, poor visibility (for helicopters to fly the astronauts from a SpaceX recovery boat back to land), or even winds stronger than about 10 mph can trigger a “no-go” decision.

At the moment they are go for undocking on August 1st and splashdown the next day, but that could change depending on how the weather changes.

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NASA announces third Dragon flight crew

9:31 am

NASA today announced four-person Dragon flight crew for that spacecraft’s third flight in the spring, the second official operational flight.

NASA astronauts Megan McArthur and Shane Kimbrough will join JAXA’s Akihiko Hoshide and ESA’s Thomas Pesquet on that flight, which will follow Crew-1 currently scheduled for sometime in late September after Demo-2 concludes. This is a regular mission, meaning the crew will be staffing the International Space Station for an extended period – six months for this stretch, sharing the orbital research platform with three astronauts who will be using a Russian Soyuz spacecraft to make the trip.

Pesquet will be the first European to fly on Dragon. McArthur however is more interesting, in that this will be her first spaceflight in more than a decade. She had previously flown only once before, in 2009 on the last Hubble repair mission. She is also the wife of Bob Behnken, who is on ISS right now having flown on the first Dragon manned mission now preparing for its return to Earth on August 2nd.

The long gap in flights was certainly due to the shuttle’s retirement. Why she didn’t fly on a Soyuz is a question some reporter should ask her at some point.

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SpaceX to raise another billion in private investment capital

11:16 am

Capitalism in space: SpaceX is now in the process of raising another billion dollars in private investment capital in order to fund both its Starlink and Starship projects.

Space Exploration Technologies, Elon Musk’s reusable rocket venture, is in talks to raise $1 billion in series N funding at a valuation of $44 billion, according to documents reviewed by CNBC. SpaceX plans to use the funding to make its Starlink satellite broadband service operational, and to conduct suborbital and orbital test flights of its Starship and SuperHeavy booster launch vehicle.

Up to now SpaceX has raised just under $2 billion in private capital, which they had said was devoted solely to developing Starship. The company had also said that it was developing Starlink with in-house funds. It appears that — having gotten almost 400 satellites in orbit (with many more coming) — they are now willing to seek outside help to make the Starlink system operational, because this situation allows SpaceX to negotiate the best deal with any investor.

It must also be emphasized that SpaceX is developing Starship/Super Heavy entirely from private funds, not government subsidies. This lack of government funds also means a lack of government oversight, which gives SpaceX complete freedom during development. Government oversight would only slow things down and likely prevent the company from innovating.

Instead, it is free to build the first completely reuseable rocket that also happens to be as powerful as a Saturn 5. And it will do it for less total than NASA has and will spend each year on SLS, for more than twenty years.

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Dragon update for the ongoing and next mission

10:34 am

Two stories today provide an update of the overall schedule and status of SpaceX’s manned Dragon capsule, both now and into the future.

First, they are preparing for the return of Bob Behnken and Doug Hurley from ISS on August 2nd. Prior to return they will use the station’s robot arm to inspect the capsule’s heat shield to make sure it did not sustain any damage during its two months in space. Such inspections will be standard procedure on future flights, something NASA did not do on shuttle flights until after the Columbia failure.

It is unlikely there is any damage, but making this inspection is plain common sense. If the heat shield has been damaged, the astronauts can stay on board ISS until the next Dragon arrives, which can then bring them home.

Second, NASA and SpaceX have worked out a tentative schedule for that next Dragon manned launch, now set for sometime in late September. The agency wants a bit of time to review the full results of the first demo mission before flying a second.

Based on all that has happened so far, it now appears unlikely that the agency will find anything that prevents that late September flight.

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Midnight repost: Elon Musk and the forgotten word

11:59 pm

The tenth anniversary retrospective of Behind the Black continues: Today’s repost comes from October 20, 2011, following Elon Musk’s National Press Club speech where he announced he was going to vertically land the Falcon 9 first stages so they could be reused. In comparing the new commercial competitive space industry with NASA’s government-run space program, I tried to outline the fundamental reason the former was always going to do better than the latter.

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Elon Musk and the forgotten word

Elon Musk at National Press Club

When Elon Musk gave his speech at the National Press Club on September 29, he was asked one question to which he really did not know the answer. He faked it, but his response illustrated how completely forgotten is one fundamental fact about American society — even though this fact is the very reason the United States became the world’s most wealthy and powerful nation less than two centuries after its founding.

To explain this fundamental fact I think I need to take a step back and talk about the ongoing war taking place right now over how the United States should get its astronauts into space. On one side we have NASA and Congress, who want NASA to build a new heavy-lift rocket to carry its Orion capsule beyond Earth orbit. On the other side we have a host of independent new space companies, all vying for the chance to launch humans and cargo into space for fun and profit.

Which is right? What system should the United State choose?
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SpaceX successfully catches both fairings from a launch

9:12 am

Capitalism in space: For the first time SpaceX yesterday successfully caught both fairings halves in the nets of their ships as they floated down to the ocean on their parasails.

Previously they have mostly plucked the fairings from the sea, though they have caught a few in the netting of the ships. To catch both simplifies the preparation for the next flight enormously, as they never touched the water.

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SpaceX successfully launches South Korean military satellite

3:02 pm

Falcon 9 first stage after landing

Capitalism in space: SpaceX today successfully launched a South Korean military satellite, with its Falcon 9 rocket using the same first stage that launched two American astronauts to ISS less than two months ago.

This was the company’s fastest turnaround yet of a used first stage, 51 days, which also beats the fastest turnaround ever by the shuttle program, 54 days. And as you can see by the screen capture image to the right, they successfully landed it so that it can be used for a third time.

Watching the camera on that first stage after separation (on SpaceX’s live stream) to landing was most fascinating. After separation its tail end points down to the west and its launch site in Florida. As it curves upward and then down towards its landing in the Atlantic, its small thrusters and grid fins very slowly and gracefully swing that tail to instead point east and down to the drone ship. I had not noticed previously the gentleness of that re-positioning. The daylight clear weather today, plus excellent camera access, made it very obvious.

The leaders in the 2020 launch race:

16 China
11 SpaceX
7 Russia
3 ULA
3 Japan

The U.S. now leads China in the national rankings, 18 to 16.

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NASA: Dragon crew will return to Earth August 2nd

9:17 pm

Capitalism in space: Assuming that the weather cooperates, NASA has now set August 2nd as the date the manned Dragon capsule will return to Earth with its two man crew.

Assuming good weather and a smooth final few weeks on the International Space Station, astronauts Doug Hurley and Bob Behnken are scheduled to undock from the orbiting research outpost Aug. 1 and return to Earth the next day to wrap up a 64-day test flight of SpaceX’s Crew Dragon spaceship.

NASA Administrator Jim Bridenstine confirmed the target dates for the Crew Dragon’s undocking and splashdown in a tweet Friday. A few hours after departing the space station, the Crew Dragon will fire its Draco thrusters for a braking burn and re-enter the atmosphere, targeting a parachute-assisted splashdown at sea. “Splashdown is targeted for Aug. 2,” he tweeted. “Weather will drive the actual date. Stay tuned.”

Note that the recovery operations, as has been the case with everything else on this flight, will be run entirely by SpaceX and its employees. NASA’s only real role is that of a customer and observer, though obviously agency officials are taking a hands-on part in determining the landing date.

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Starship prototype being prepped for first hop

10:14 am

Capitalism in space: SpaceX engineers, having successfully completed its tank pressure tests of its fifth Starship prototype, are now preparing the ship for its first static fire engine test, to be followed very quickly thereafter by its first hop to 150 meters.

SN5 [the fifth prototype] is being prepped for a flight test right out of the gate. SpaceX does not plan to perform an extended ground test campaign with SN5 after beginning Raptor engine testing.

It is understood that one good static fire test could be enough to clear the way for a 150-meter hop test. Furthermore, only a few days may be required to prepare SN5 for the flight test following a successful static fire test. If a static fire occurs this weekend, this will put the earliest possible hop date in the first half of next week.

As always, this schedule could change during testing.

The article also describes the status of both the sixth prototype, as well as the eighth being assembled now, noting that “if the 150-meter flight of Starship SN5 is successful, SpaceX is expected to quickly move on to Starship SN8 for an upcoming higher altitude flight test – potentially skipping a flight test with the SN6 prototype.”

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Launch delays for SpaceX and UAE

12:21 am

The launches planned for tomorrow by SpaceX and Japan’s space agency JAXA have both been postponed, for different reasons.

The SpaceX launch of a South Korean military satellite was postponed in order to swap out equipment in the Falcon’s upper stage. No new launch date has yet been announced.

The JAXA launch, using Mitsubishi’s H-2A rocket, was to launch the United Arab Emirates’ Mars orbiter Hope. It was postponed due to bad weather. Their next launch window is July 16, but they have not yet announced a new launch date. Like Perseverance, they must launch this summer or they will have to wait two years for the next launch window to Mars to reopen.

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SpaceX about to set reuse record for fastest turnaround ever

9:09 am

Capitalism in space: If tomorrow’s launch of a South Korean military satellite by SpaceX’s Falcon 9 rocket succeeds, it will set a new all-time record for the fastest turnaround of a used rocket, 44 days.

The previous record was 54 days, set by the space shuttle Atlantis in 1984. The article notes however the spectacular differences:

By far the most impressive aspect of Falcon 9’s imminent record is the comparison between the resources behind Space Shuttle Atlantis’ 54-day turnaround and Falcon 9 booster B1058’s ~44-day turnaround. Around the time NASA and Atlantis set the Shuttle’s longstanding record, some 5000-10000 full-time employees were tasked with refurbishing Space Shuttles and the facilities (and launch pads) that supported them. Based on retrospective analyses done after the STS program’s end in 2011, the average Space Shuttle launch (accounting for the vast infrastructure behind the scenes) ultimately wound up costing more than $1.5 billion per launch – more than the Saturn V rocket the Shuttle theoretically replaced.

According to a uniquely detailed May 2020 AviationWeek interview with SpaceX CEO Elon Musk, Falcon 9 booster turnaround may cost as little as $1 million apiece and can be managed from start to finish by several dozen employees at most. In other words, even though SpaceX boosters are suborbital and stressed quite a bit less than orbital Space Shuttles, Falcon 9 reuse is approximately a thousandfold more efficient that Space Shuttle reuse. [emphasis in original]

I should add that SpaceX also has three more launches on tap for the rest of July. If all lift off, the company will have launched four rockets in only three weeks, which in itself will be a record. No private rocket company has ever launched so frequently and so routinely. And only Russia during its Soviet Union heydays has come close to launching with this frequency.

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Falcon 9 landing leg falls during retraction

10:15 am

Capitalism in space: During the processing to bring a used Falcon 9 first stage back to its hanger after its June 30th launch, one of the landing legs unexpectedly fell back to the ground during retraction.

I have embedded the video of the incident, cued to the event, below the fold. No one was hurt, and it appeared that nothing was damaged. It appears it happened because a cable holding the leg vertical snapped just before the leg got latched in place on the side of the rocket.
» Read more

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Update on Starship test program: First tests for prototype #5

9:11 am

Link here. Lots of good information, including details about the growing assembly line of new Raptor engines.

Meanwhile, labeled “27”, the engine – logically assumed to be Raptor SN27 – SpaceX has just installed on Starship SN5 is also of interest. On top of Musk’s recent confirmation that SpaceX is already building Raptor SN30 (probably SN31 or SN32, now), SN27’s assignment to Starship SN5 confirms that the company has managed to complete (and test) at least one next-generation engines every other week since the first full-scale engine shipped to McGregor, Texas in February 2019.

For a brand new engine as complex as Raptor, that’s an impressive production milestone. Per Musk, the end-goal is to produce at least one Raptor per day in the near term – a necessity given that each Starship and Super Heavy booster pair will require at least 37 engines. To feasibly build a fleet of tens – let alone hundreds or thousands – of Starships and boosters, one engine per day is arguably the bare minimum required just for early orbital launch attempts and initial operations.

They hope to start static fire tests, with prototype #5 by July 8th. If these go well they will likely follow soon thereafter with the first short vertical hop.

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SpaceX’s reusable first stages and their dramatic impact on the bottom line

9:15 am

This article by Eric Berger at Ars Technica outlining the status of SpaceX’s fleet of reusable first stages contained this incredible fact:

On May 11, 2018, the company launched the first of its new “Block 5” version of its Falcon 9 rocket. This new version of the first stage incorporated all of the company’s previous performance upgrades to the Falcon 9 rocket while also maximizing its reuse. It worked—SpaceX has now flown two different Falcon 9 cores five times, and it may fly a first stage for the sixth time later this summer.

The success of the Block 5 rocket means that SpaceX has had to devote less time and resources to building Falcon 9 first stages. Since May 2018, it has launched 31 times on a Block 5 version of the Falcon 9 rocket—while using just 10 cores. Put another way, reuse has saved SpaceX the cost of 189 Merlin rocket engines, dozens of fuel tanks, and many complex avionics systems. [emphasis mine]

That is a lot of cost savings, which the company is not only using to cut its prices but also to reduce the cost of its Starlink launches. It appears SpaceX wants those launches, as much as possible, to use reused boosters in order to lower the overall cost of getting that internet constellation into orbit. This in turn will make it possible for them to charge less for the service, once they begin offering it.

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Starship prototype #5 passes cryogenic test

8:40 am

Capitalism in space: SpaceX’s fifth Starship prototype #5 last night successfully completed a cryogenic test of its tanks, setting the stage for its first vertical test flight.

SpaceX’s Starship SN5 prototype performed a cryogenic proof test at the launch provider’s Boca Chica, Texas facility on Tuesday evening. The test marked a rapid recovery for SpaceX – managing to return to testing a month after the previous vehicle exploded on the pad.

The cryogenic proof is when the vehicle’s propellant tanks are filled with liquid nitrogen and pressurized to flight pressures. Then, hydraulic pistons (otherwise known as a thrust simulator) press against the base of the vehicle to mimic the force of a Raptor engine. The proof test will ensure that Starship SN5 is structurally sound ahead of testing with liquid oxygen and methane. Unlike oxygen and methane, nitrogen is inert and will not combust if something were to go wrong.

The article at the link gives a nice overview of the test program, and what is to come next.

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SpaceX successfully launches GPS satellite for Space Force

1:56 pm

Capitalism in space: SpaceX today successfully launched its first satellite for the Space Force, a GPS satellite.

It also successfully landed the first stage, which was on its first flight. This was also the 88th flight of the Falcon 9 since its inception in 2010, which now makes it the rocket with the most launches of any U.S. operational rocket, bypassing ULA’s Atlas 5, and doing it in about half the time.

The leaders in the 2020 launch race:

13 China
10 SpaceX
7 Russia
3 ULA

The U.S. now leads China 16 to 13 in the national rankings.

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Dragon capsule on ISS doing better than expected

10:47 am

Capitalism in space: The first manned Dragon capsule, presently docked to ISS, is doing better than expected according to NASA officials, who have also now set August 2nd as their target date for the return to Earth.

Tests of the solar panels and the capsule’s power systems have so far been “better than expected.” Besides these tests, they still have one other major in-orbit test.

On July 4, the space station crew will perform a habitability test with the craft, with four astronauts climbing into the capsule and practicing everyday activities like sleeping, hygiene tasks, as well as emergency procedures to see what it will be like for future crewed missions. On Demo-2, only two astronauts were on board for the trip but regular flights will carry at least four people, so this test will help inform astronauts on those future trips.

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SpaceX tests 7th Starship test prototype to failure

9:53 am

Capitalism in space: As they had planned, SpaceX has done a tank pressure test of its seventh Starship prototype to failure, destroying the prototype.

This was actually the second test to failure for this tank, which is testing a new stainless steel alloy. The first had only sprung a leak that could be repaired.

Deemed 304L, the type of steel is still readily available off the shelf and only 10-20% more expensive than the 301 alloy SpaceX has used to build all Starship prototypes up to SN7. The biggest change it brings to the table is improved ductility (malleability), particularly at the cryogenic temperatures Starship’s tanks will often be held at. By reducing brittleness, Starships built out of 304L steel should be able to fail far more gracefully by developing stable leaks instead of violently decompressing. In fact, the very same test tank destroyed on June 23rd demonstrated that capability perfectly when it sprung a leak during its first pressure test on June 15th.

During its first cryogenic pressure test with liquid nitrogen, SpaceX CEO Elon Musk revealed that the SN7 test tank managed to reach 7.6 bar (~110 psi) before it began to leak – technically satisfactory for orbital Starship launches with an industry-standard 25% safety factor. Thanks to the general flexibility of steel, including the new 304L alloy SN7 was built with, SpaceX was able to simply repair the leak it identified, readying the test tank for a second cryogenic pressure test barely a week later.

Below the fold are two videos showing this second failure. Unlike earlier tests using different alloys, the tank does not go flying hundreds of feet into the air. The rupture seems more gentle, if I can use such a word for such a failure.

They have another tank ready to go, so testing should proceed quickly even after this test failure. And they also are prepping the full scale #5 Starship prototype for testing, which if all goes well will include actual test hops.
» Read more

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Trump official skeptical of point-to-point suborbital transportation

8:45 am

During the FAA’s annual commercial space conference, the executive secretary for Trump’s National Space Council, Scott Pace, expressed strong skepticism about plans by some companies to develop point-to-point transportation using suborbital spacecraft.

“I still see that as somewhat speculative and somewhat over the horizon,” he said. “I see us working right now on trying to get the suborbital market up, running and sort of stabilized. I think people look forward to the possibility of point-to-point passenger and cargo travel, but right now just getting routine suborbital access to space and pushing hard on the unmanned hypersonic and military applications is where the action is.”

“Maybe it’s not too soon to think about,” he added, “but I still think that’s a bit farther out until I see how the initial market settles out.”

In this context Pace noted his primary focus was in helping Virgin Galactic and Blue Origin get their space tourism businesses off the ground. Virgin Galactic has been making noises that it wants to do point-to-point transportation as well. His skepticism of this is actually quite realistic, since Virgin Galactic has not even completed its first commercial tourism flight and its rocket and spacecraft are underpowered as well.

If Pace’s skepticism is however aimed at SpaceX’s Starship plans to do point-to-point transportation, he is exhibiting a typical Washington bureaucrat’s timidity about new technology.

Meanwhile, Virgin Galactic has gotten a contract from NASA to train private astronauts. To my mind this is NASA’s attempt to keep this company above water, as it certainly isn’t the most qualified to do this kind of training. If I wanted training for going on a private space mission, SpaceX and Boeing would be better places to get that preparation.

The deal however has done wonders for Virgin Galactic’s stock, causing it to rise almost 16% yesterday following the announcement of this contract. Great timing for Richard Branson, who by coincidence just happens to be trying to sell some of his stock at this moment.

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Three Starship prototypes in line for testing

9:14 am

Capitalism in space: SpaceX’s assembly line for building Starship prototypes is heating up, with three such ships completed or under construction in Boca Chica, Texas.

Initially numbered 5 through 7, the goal of the first two will be to do the first full scale vertical hops, flying as high as 7.5 miles.. #7 however has a different purpose:

While stouter than an actual Starship-class methane or oxygen tank, this particular test tank is maybe only 25% shorter than the methane tanks installed on Starship prototypes. According to Musk and effectively confirmed by writing all over the prototype, this particular test tank – formerly Starship SN7 – was built to determine if a different kind of steel could be preferable for future ships.

Shortly after the June 15th test began to wind down, Musk announced that the new material (304L stainless steel) had performed quite well, reaching 7.6 bar (110 psi) before it sprung a leak. The fact alone that it sprung a leak instead of violently depressurizing is already a major sign that 304L is preferable to 301L, as it means that Starships built out of it could fail much more gracefully in the event of a leak instead of collapsing or violently exploding. A step further, SpaceX has already managed to repair the leak on SN7 and will likely test the tank again in the next few days.

SpaceX is once again demonstrating how to properly do this kind of cutting edge development. You test, you fix or, you change, based on what your tests tell you. You don’t lock down design in the early stages, because at that point you really don’t know enough to do so.

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SpaceX hiring engineers for building floating Starship spaceport

10:04 am

Capitalism in space: SpaceX has issued advertisements looking for two engineers to help build an offshore floating spaceport for launching its Starship/Super Heavy reusable rocket.

This plan is not really a surprise, as Musk from his first description of Starship said that it would likely launch and land on floating platforms. The rocket is big, so putting its launch and landing in the ocean reduces the risk to populated areas, while giving the company some flexibility about where it will land. The latter point reinforces the company’s stated goal of using this rocket not only to make interplanetary travel affordable but to also provide point-to-point transportation on Earth.

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SpaceX recovers both reused fairings from most recent launch

8:44 am

Capitalism in space: SpaceX has successfully recovered both of the reused fairings that were used in its June 13th Starlink launch.

This sets the stage for the first reuse of a fairing for the third time. The article at the link notes this important detail about these used fairings, both of which were not caught prior to landing in the ocean:

Preventing a vast majority of seawater exposure, a catch with [the ships] Ms. Tree or Ms. Chief may always be preferable for fairing reuse but the fact remains that all three successful reuses up to this point have been achieved with fairing halves that landed in the ocean. That success means that SpaceX has found a way to fully prevent or mitigate any potential corrosion that might result from seawater immersion. Given that that problem must have been a showstopper for the ~2.5 years SpaceX was able to recover – but not reuse – intact fairings, it’s safe to say that the company’s engineers have more or less solved the problem of corrosion. [emphasis mine]

In a sense we should not be surprised that the fairings were not seriously damaged by their short exposure to salt water. As designed, the shape of the fairings is essentially that of a boat hull. By landing them controlled by parachute, SpaceX guarantees that the sensitive electronics and equipment inside the fairings remains dry and untouched by salt water.

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Successful SpaceX launch

2:38 am

Falcon 9 shortly after launch

Capitalism in space: SpaceX tonight successfully launched 58 Starlink satellites as well as three Planet earth observation satellites. The image to the right looks up at the exhaust from the nine firing Merlin engines of Falcon 9 rocket, about two minutes after launch.

That first stage also successfully landed, the third time this stage has completed a launch. The fairing halves were also reused.

The leaders in the 2020 launch race:

11 China
9 SpaceX
7 Russia
3 ULA

The U.S. now leads China 15 to 11 in the national rankings.

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NASA aiming for late July/early August Dragon crew return

9:39 pm

According to statements made by NASA officials today, the agency is now targeting a late July to early August return date for the first manned Dragon.

Bob Behnken, one of the two Dragon astronauts, will likely do two spacewalks while on ISS to replace batteries on the stations main truss. In addition, they will do a number of tests of Dragon to check out its in-space long term operation.

Mission controllers planned to place the Dragon capsule into a hibernation mode, then wake up the ship’s systems to verify the spacecraft can perform its role as a quick-response lifeboat to scurry astronauts back to Earth in the event of an emergency. Mission managers are also checking data to monitor the status of the solar arrays.

It appears however that the biggest factor for determining the launch date will be weather conditions in the Gulf of Mexico. If they are good in late July mission managers might decide to return the astronauts earlier to take advantage of those conditions.

The next Dragon manned flight, carrying four astronauts, is planned in late August, thus giving NASA time to do a full assessment of this first demo flight before its launch.

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