Tag: spaceflight

A Martian snake of collapsed hills

10:21 am

A Martian snake of collapsed hills

Close-up of collapsed hills

Time to once again delve into this month’s release of high resolution images from Mars Reconnaissance Orbiter. The image above, cropped, rotated, and reduced in resolution to post here, shows a string of strange mounds or hills, each with similar collapse features on their tops. If you click on the picture, you can see the full resolution image, rotated properly with north up. You can also go to the MRO post, which provides some additional information.

The white box indicates the location of the cropped close-up, at full resolution, to the right. This area is typical across the entire snake-like ridge. You have these mounds or hills, each with chaotic depressions at their tops. The depressions suggest that this ridge follows an underground void, like a lava tube. The ridge-like nature of the line of hills also suggest that this tube has been exposed by erosion over time, with the surrounding terrain more easily blown or washed away while the more resistant ridge remains.

At the same time, the line of hills is baffling. Why would a lava tube expand periodically to form something that looks like a string of pearls?

The location of this snaking ridge provides some additional context.
» Read more

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Status update on Mars Reconnaissance Orbiter

9:25 am

Link here. The story is focused on the decision by NASA to hold off launching a replacement for MRO and instead keep it operating for another decade. In telling this story, however, the article also provides us a detail look at the spacecraft’s present condition.

[A]ging batteries and gyroscopes, used to store electricity and aid navigation, will have to be carefully watched in the coming years to keep the mission going. “We found that they weren’t charging at full capacity,” Tamppari said of the batteries. MRO charges its batteries through its solar arrays while in sunlight. During night passes over Mars, the orbiter draws electricity from its batteries for about 40 minutes during each two-hour lap around the planet. The spacecraft now charges its batteries higher than before, NASA said, and engineers sent up commands for MRO to reduce the draw on the batteries while in shadow.

MRO’s two inertial measurement units are also showing signs of their age. Each redundant unit contains three gyroscopes and three accelerometers, feeding data about the spacecraft’s orientation to on-board computers. One measurement unit likely in the final months of its useful lifetime, Tamppari said, and the other is showing signs of degradation.

Ground controllers found a work-around by implementing an “all-stellar” navigation mode on MRO in March. The new technique allows the orbiter to sense the positions of the stars to determine which way it is pointing. “In all-stellar mode, we can do normal science and normal relay,” said Dan Johnston, MRO project manager at JPL, in a statement released in February. “The inertial measurement unit powers back on only when it’s needed, such as during safe mode, orbital trim maneuvers, or communications coverage during critical events around a Mars landing.”

There’s more at the link. Since MRO is also used as the main communications relay satellite between the Martian ground-based probes and the Earth, the story also outlines the communications capabilities of all spacecraft presently orbiting Mars. All told, it seems that if MRO fails the research on the surface will be significantly impacted, even if the rovers and landers are all still working.

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Issue with thermometers on Parker Solar Probe

8:56 am

As NASA prepares the Parker Solar Probe for its summer launch, engineers are reviewing an issue with the spacecraft’s thermometers.

As those preparations continue, officials are studying problems with devices known as platinum resistance thermometers that are part of the spacecraft’s thermal control system. Those devices have suffered a higher-than-expected failure rate, according to a presentation at an April 5 meeting of NASA’s Heliophysics Advisory Committee.

The thermometers are lightweight, highly sensitive temperature sensors used to help provide feedback to the spacecraft’s cooling system and solar arrays, NASA spokesman Dwayne Brown said April 9. “We put all spacecraft through a rigorous test program to make sure all systems are working as designed and it is normal for a test program to uncover issues.”

“The team is looking very carefully at whether any change is needed,” Peg Luce, acting director of NASA’s heliophysics division, said at the meeting. The issue, she said, was debated “quite significantly” at a review last week to approve the shipment of the spacecraft to Florida, including whether to delay that shipment to study the problem. “There are certain, possible fixes if we need to fix something that could be done at the Cape, so the decision was to go ahead and ship,” she said.

This issue is especially critical as the spacecraft is intended to fly as close as four million miles from the Sun. If these thermometers fail too easily, the spacecraft will not be able to monitor its temperature properly, and it will likely fail much sooner than planned.

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China successfully launches three military satellites

8:47 am

The launch race: China today successfully launched three military satellites, using its Long March 4B rocket.

As is typical of Chinese military launches, no information was released about the satellites, and there was no publicity about the launch prior to liftoff. This launch however puts China ahead of the U.S. in total launches in 2018, 11 to 10. The leaders in the 2018 launch standings are as follows:

11 China
7 SpaceX
3 Japan
3 Russia
3 ULA
3 Europe

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Europe’s Trace Gas Orbiter achieves operational orbit around Mars

8:33 am

After a year of aerobraking to lower its orbit, the European Space Agency’s Trace Gas Orbiter has reached its planned orbit around Mars, and is about to begin studying the red planet’s atmosphere.

The primary goal is to take a detailed inventory of trace gases – those that make up less than 1% of the total volume of the planet’s atmosphere. In particular, the orbiter will seek evidence of methane and other gases that could be signatures of active biological or geological activity.

On Earth, living organisms release much of the planet’s methane. It is also the main component of naturally occurring hydrocarbon gas reservoirs, and a contribution is also provided by volcanic and hydrothermal activity. Methane on Mars is expected to have a rather short lifetime – around 400 years – because it is broken down by ultraviolet light from the Sun. It also reacts with other species in the atmosphere, and is subject to mixing and dispersal by winds. That means, if it is detected today, it was likely created or released from an ancient reservoir relatively recently. Previous possible detections of methane by ESA’s Mars Express and more recently by NASA’s Curiosity rover have been hinted at, but are still the subject of much debate.

The Trace Gas Orbiter can detect and analyse methane and other trace gases even in extremely low concentrations, with an improved accuracy of three orders of magnitude over previous measurements. It will also be able to help distinguish between the different possible origins. [emphasis mine]

The highlighted sentence is important. Pinpointing a region where methane is concentrated will allow scientists to better understand where it is coming from, and what is causing its release. It could be microbiological life, but it also could be from active volcanic processes. Finding either or both would be significant, to put it mildly.

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Two investigations blame Northrop Grumman for Zuma failure

2:18 pm

Two independent investigations have now placed the blame for the failure of the classified Zuma satellite to reach orbit on Northrop Grumman, not SpaceX.

Two independent investigations, made up of federal and industry officials, pointed to Northrop’s payload adapter as the cause of the satellite’s loss, the report said, citing people familiar with the probes. The payload adapter is a key part of deploying a satellite in orbit, connecting the satellite to the upper stage of a rocket.

…The investigations tentatively concluded that onboard sensors did not immediately communicate to ground systems that the satellite did not separate from the rocket, according to the Journal. Unbeknownst to officials at the time, the planned return of the rocket’s upper stage — a method of disposal to avoid adding space debris around the Earth — brought the satellite back down with it. By the time the satellite separated from the rocket it was too late, putting Zuma too low in orbit to save, according to the report.

I still have a nagging suspicion that Zuma actually did reach orbit, and this entire story that it never separated from the upper stage is all a disinformation campaign to help distract people from the satellite’s existence in orbit. At the same time, by this time I don’t put much faith in my own suspicions. These two reports appear to settle the matter.

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NASA expands first manned Starliner mission

8:35 am

NASA has modified its contract with Boeing to allow its first manned Starliner test mission to add an astronaut and extend the mission’s length so that it more resembles an operational flight to ISS.

NASA is considering adding a third crew member to the Starliner’s “Crew Flight Test” and could extend its trip to the International Space Station from two weeks up to six months, the length of a typical ISS expedition. The potential changes, outlined in a contract modification with Boeing, could help NASA maintain its presence on the International Space Station through 2019 and beyond.

NASA’s last purchased ride aboard a Russian Soyuz spacecraft, upon which the U.S. has relied for access to the ISS since the shuttle’s retirement in 2011, is scheduled to launch in the fall of 2019.
Boeing’s new Starliner spacesuit features lightweight fabric, slim gloves and sneaker-like boots. But Boeing’s Starliner and SpaceX’s Crew Dragon may not be certified to fly four-person crews until after that. “This contract modification provides NASA with additional schedule margin if needed,” said Bill Gerstenmaier, head of human spaceflight operations at NASA headquarters in Washington. “We appreciate Boeing’s willingness to evolve its flight to ensure we have continued access to space for our astronauts.”

Doing this makes some sense, but I wonder why NASA chose to do it with Boeing’s Starliner instead of SpaceX’s Dragon. Starliner has never flown in any form, while the manned Dragon is based on SpaceX’s well tested design.

I suspect NASA will soon modify its SpaceX contract as well. It makes sense. Once you put humans on board, you might as well give yourself the option to do a full mission.

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First SpaceshipTwo powered flight since accident

10:09 pm

Capitalism in space? Virgin Galactic today successfully completed the first powered test flight of VSS Unity, the first such test flight since the flight accident that destroyed the first SpaceShipTwo and killed on pilot in October 2014.

VSS Unity was dropped from its WhiteKnightTwo mothership from about 50,000 feet (15,000 meters) over the mountains about 20 miles (32 kilometers) north of the Mojave Air and Space Port in California. Pilots David Mackay and Mark “Forger” Stucky fired Unity’s hybrid engine for 30 seconds, boosting the vehicle to a top speed of Mach 1.87 and a maximum altitude of 84,271 feet (25,686 m) before gliding back to the runway at the spaceport, Virgin Galactic representatives said.

During the descent, the crew deployed SpaceShipTwo’s feather system, which reconfigures the ship into a high-drag shuttlecock by moving its twin tail booms. The feather will be used to soften the vehicle’s re-entry into the Earth’s atmosphere during spaceflight.

They say that they hope to begin commercial flights later this year, but I remain exceedingly skeptical.

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Another space station hotel company enters the market

4:03 pm

Capitalism in space: A new space station hotel start-up, Orion Span, hopes to launch their first module by 2021, and begin accommodating guests by 2022.

Aurora Station will accommodate four paying guests and two crewmembers; these latter personnel will likely be former astronauts, Bunger said. Most of the guests will probably be private space tourists, at least initially, but Orion Span will be available to a variety of customers, including government space agencies, he added.

And the space hotel will get bigger over time, if everything goes according to plan. As demand grows, Orion Span will launch additional modules to link up with the original core outpost, Bunger said. “Our long-term vision is to sell actual space in those new modules,” he said. “We’re calling that a space condo. So, either for living or subleasing, that’s the future vision here — to create a long-term, sustainable human habitation in LEO [low Earth orbit].”

This makes three companies vying to build the first private space stations, with Bigelow and Axiom Space already in the game.

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A spray of volcanic ejecta on Mars?

10:38 am

pit features on floor of crater

Time for some more weird Mars geology! Today the science team for the high resolution camera on Mars Reconnaissance Orbiter released its monthly batch of new images. There is a lot of interesting stuff buried therein, some of which I will feature periodically in the next month.

The image on the right, reduced in resolution to post here, is a good example. (If you click on the image you can see the full resolution version.) It shows a scattering of pits in three specific areas on the crater floor, all in a line going from the northeast to the southwest. Yet, the rest of the crater floor lacks similar pits, and is either very smooth or has a mottled appearance. Both the smooth and the mottled areas appear to have a very faint trend going from the northwest to the southeast, which to my eye appears caused by the general wind direction that flows across the crater floor.

Even more intriguing, the pits in these three areas appear to be mostly oblong and also trend from the northeast to the southwest, cutting across the general trend of the rest of the crater floor. You can see this in the cropped closeups from the full resolution image below, showing the two boxed areas indicated on the image on the right.
» Read more

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UN agreement reached on space sustainability

8:59 am

In February a UN committee helped negotiate a agreement with 87 nations for establishing rules for space sustainability.

The agreement was reached during a meeting of the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS). COPUOS was created in 1959 as the main UN body to govern the exploration and use of space, and was instrumental in the creation of the five major space treaties. It has been the main multilateral forum where countries meet to discuss space issues and share updates on national activities and practices. As of 2018, those eighty-seven countries are formal members of COPUOS, with Bahrain, Denmark and Norway being the most recent additions. There are also nearly 40 observer organizations, including the Secure World Foundation.

…In 2016, the first set of 12 guidelines were agreed to by a consensus of all the members of COPUOS, and the mandate of the LTS Working Group was extended through 2018. The most recent meeting of STSC in February 2018 saw the LTS Working Group reach consensus on nine more guidelines and the preamble text, bringing the total to 21, as well as agreeing to review their implementation and potentially update them. The 21 guidelines represent countries’ best practices across a broad spectrum of space issues.

Though all of the guidelines essentially confirm policies that these nations have been following, they were reaffirmed by this agreement partly because of the Chinese anti-satellite test in 2007 that produced a lot of space junk.

A review of the guidelines reveals them to be mostly sensible and necessary. The problem is that this process is establishing the precedent that such rule-making should apply to all space activities, and it shall be imposed by UN committees of government bureaucrats here on Earth. For example, the process here appears to be entirely political, and involved none of the actual companies that build and produce rockets and satellites.

At some point in the future, such rule-making should be the responsibility of those who work and and live in space. I predict when that time comes, the UN and the political bureaucracies from these nations will be loath to give up this power. Stay tuned for the eventual rebellion that will follow.

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NASA’s horrible management of SLS

8:25 am

In this article from NASASpaceflight.com describing a recent status update from NASA of its SLS/Orion program (which remains years behind schedule and might see further delays) was the following quote, revealing much about NASA’s incompetence and corruption in building this boondoggle:

In contrast to the more centralized organization structure for the cancelled Constellation program, [SLS’s] three major programs [ground systems, Orion, and SLS] are managed independently: Exploration Ground Systems (EGS) based at KSC, Orion based at the Johnson Space Center (JSC) in Houston, Texas, and SLS based at the Marshall Space Flight Center (MSFC) in Huntsville, Alabama.

Each of the programs has resources to integrate with its other two partners, but ESD [Exploration Systems Development at NASA headquarters in DC] provides the overall coordination between all three. During Constellation, the equivalent organizations were projects directly managed by that now-cancelled program. [emphasis mine]

In other words, when Obama unilaterally cancelled Constellation (something he really didn’t have the power to do) and Congress micromanaged its reinstatement (creating SLS/Orion), the Obama administration and NASA abandoned a sensible management structure and allowed SLS/Orion to be a three-headed monster, difficult to coordinate and certain to go over-budget and fall behind schedule.

With this operational structure, even if SLS eventually flies successfully, it will be impossible for it to operate efficiently. Expect every one of its future efforts to always go over budget and to fall behind schedule.

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Rocket Lab next launch window opens April 20

8:08 am

Capitalism in space: Rocket Lab today announced that the first official operational launch of its Electron rocket will take place in a window beginning April 20.

If this launch is successful, expect the company to begin to ramp up its launch pace. Their goal is to have the ability to launch once every three days, which will also give them the ability to quickly schedule payloads at a moment’s notice.

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NOAA admits it wants the power to license all camera use in space

7:58 am

Government power grab: At a conference today a NOAA official revealed that its lawyers have decided to liberally interpret federal law so that the agency has the power to license all camera use in space.

According to Tahara Dawkins, director of Commercial Remote Sensing Regulatory Affairs (CRSRA) office,

[p]art of the licensing review for commercial remote sensing systems involves a check of any national security implications of that system, but it’s not clear what issues an onboard camera system, whose views of the Earth are typically low resolution and often obscured by the rocket itself, might pose.

Dawkins said that no previous SpaceX launches had NOAA commercial remote sensing licenses, even though many have flown onboard cameras, including several previous Iridium missions. An April 2 launch of a Falcon 9 from Florida carrying a Dragon cargo spacecraft had no such restrictions, she said, because that was considered a government mission. While the spacecraft is performing a mission under contract to NASA, the launch itself was considered commercial and licensed by the Federal Aviation Administration’s Office of Commercial Space Transportation.

NOAA was not aware of the previous launches that featured onboard cameras. “Our office is extremely small, and there’s a lot of things out there that we miss,” she said. “The onus is on the companies to come to us and get a license when needed.” [emphasis mine]

The highlighted words prove that the big publicity of the Falcon Heavy launch, showing the Tesla with the Earth in the background, instigated this stupidity. This office doesn’t have the slightest idea what is going on. Footage from rocket launches have become routine now for almost a decade. They saw the Tesla images and decided to exert their power, despite the fact that, as the article notes,

Part of the licensing review for commercial remote sensing systems involves a check of any national security implications of that system, but it’s not clear what issues an onboard camera system, whose views of the Earth are typically low resolution and often obscured by the rocket itself, might pose.

This is government overreach at its worst. If Trump is serious about cutting back regulation, he should step it now to shut this down.

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SpaceX launches Dragon to ISS

8:03 am

SpaceX successfully launched a reused Dragon capsule into orbit yesterday, once again using a reused first stage.

To show you how routine this has become, I myself completely forgot the launch was happening yesterday, and spent that time doing my monthly bills. Oy.

They did not attempt to recover the first stage, using it instead to do re-entry flight tests as it landed in the Atlantic Ocean. I suspect they have decided that it is not cost effective to recover used first stages, and would rather dump them in the ocean than pay the cost to recover, test, and store them.

The leaders in the 2018 launch standings:

10 China
7 SpaceX
4 Russia
3 Japan
3 ULA

China and the U.S. continue to be tied in the national standings.

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Near the Martian shoreline

1:20 pm

One of the prime areas of research for Mars planetary geologists is the region on Mars where the geography appears to transition from the southern cratered, rough terrain to the northern low, generally smooth, and flat plains. It is theorized by some scientists that the northern plains were once an ocean, probably shallow and probably intermittent, but wet nonetheless for considerable periods. The global map of Mars below, created by the laser altimeter on Mars Global Surveyor, clearly shows the obvious elevation differences between the low northern plans (blue) and the high, more cratered southern regions (changing from yellow to orange as you move higher).

Labeled global Map of Mars

Scientists have spent a considerable effort studying this transition zone (green on the map), illustrated by just one example I recently highlighted, showing that, though there does not appear to be a clear shoreline in many places, there is strong evidence that a shallow ocean repeatedly rose and fell in this transition zone, leaving behind geological ripple marks vaguely reminiscent of those seen on a beach caused by the rise and fall of the tides.

Today we highlight another example, taken in January 2018 at the location indicated by the cross on the above map.
» Read more

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Tiangong-1 reentry window narrowed to only 3.4 hours and two orbits

5:30 pm

The sky is falling! The Tiangong-1 reentry window has now been narrowed to only 3.4 hours and two orbits, centered on 8:30 pm (Eastern) on April 1.

It appears the world might be dodging this very minor bullet. The new window, which the spacecraft has just now entered as I write this, has allowed for the first prediction on where it should come down, and it appears that this will be in the southern hemisphere in the Pacific west of South America.

Update: Tiangong-1 came down in the Pacific Ocean at 8:15 pm (Eastern) on April 1.

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SpaceX ship returns with this week’s fairing apparently intact

8:08 am

Despite tweets from Elon Musk suggesting it had hit the water at “high speed,” SpaceX’s recovery ship appears to have returned with one half of the fairing intact.

There are several images at the link showing the fairing on the ship. That it recovered it out of the water without damage seems surprising and unlikely. Nonetheless, that it looks intact means that the parafoil managed to slow it down enough to limit damage as it hit the water, and the company seems to be making real progress towards making these fairings reusable.

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Another successful launch for China today

8:57 am

China successfully completed its tenth launch for 2018 today, placing three Landsat-type Earth observation satellites into orbit with its Long March 4C rocket.

The leaders in the 2018 launch standings:

10 China
6 SpaceX
4 Russia
3 Japan
3 ULA

There have now been 29 launches in the year’s first three months, suggesting a pace that will give us about 120 launches total for the year, the most launches since the 1980s. Then, the Soviet Union was putting up a lot of rockets it could not afford and were not really practical. Now, we have some real competition and profits being made putting up satellites that fill a need. The numbers should only get higher in the coming years.

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A detailed look at Orbital ATK’s Next Generation Launcher (NGL)

8:44 am

Link here. Based on the solid rocket technology developed for the shuttle and then for Ares, they hope to make the first launch in 2021, and actually do two flights that year to get certified by the Air Force so that they can bid on military launch contracts.

Development money for this rocket has come mostly from the Air Force, not from private funds raised by Orbital ATK. It also seems to me that it has taken far longer to get it built than it should if they really wanted to get a rocket up and running to compete for business. Moreover, they expect the Air Force to certify them after only two launches, while it took SpaceX a lawsuit and far more launches to get the same certification.

Thus, all told there is a bit of crony capitalism involved here. NGL might turn out to be a good deal, in the long run, but forgive me if I reserve my opinion.

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NOAA bureaucracy shuts down SpaceX telecast because stupid

3:05 pm

Government marches on! The NOAA bureaucracy forced SpaceX to shut down its launch telecast this morning because agency bureaucrats had decided that views of Earth in the background were the equivalent of a satellite remote sensing system that the agency is required to regulate.

It was definitely an issue with NOAA, the rocket company said. Apparently NOAA recently asserted that cameras on the second stage of the Falcon 9 rocket, which SpaceX uses for engineering purposes, qualify as a remote sensing system, which are subject to NOAA’s regulation. A provisional license obtained by SpaceX for Friday’s launch of the Iridium-5 mission required it to end views once the second stage reached orbit.

This raises some questions about the real purpose behind NOAA’s action, as the regulation specifically exempts “small, hand-held cameras.” SpaceX intends to obtain a full license for such camera views, and as of now there is apparently no restriction in place for SpaceX’s next launch of a NASA cargo ship from Florida, happening as early as Monday.

One theory put forth is that some bureaucrats at NOAA might not have liked the good press that SpaceX got when it broadcast views of the Tesla in space, launched by the Falcon Heavy, and wanted to exert their petty power. This might not be true. What is true is that this interference by NOAA in SpaceX operations is beyond stupid.

But then, why should be expect anything different from our present federal government?

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ESA successfully completes first parachute test for 2020 ExoMars mission

9:33 am

Early in March the European Space Agency successfully completed the first of a series of parachute tests for its 2020 ExoMars rover mission.

The focus of the latest test, conducted in sub-zero conditions in Kiruna, Sweden earlier this month, was the 35 m-diameter second main parachute. The test demonstrated the deployment and inflation of the parachute with its 112 lines connected to a drop test vehicle, via the deployment of a smaller 4.8 m-wide pilot chute.

This test only tested the parachutes deployment system. They still need to do this test at high altitudes to duplicate Mars’ conditions using high-altitude balloons.

When ExoMars reaches Mars, the parachute will act to slow the spacecraft down during descent. For the actual landing, they will be using systems designed and built by the Russians.

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FCC approves SpaceX 4K+ satellite constellation with strict new requirements

9:19 am

Capitalism in space: The FCC today approved SpaceX proposed gigantic 4,425 Starlink satellite constellation, designed to provide internet access worldwide, while also imposing a deadline for its launch and requiring the company to provide detailed de-orbit plans.

SpaceX will have to launch at least half of its constellation of Ku- and Ka-band satellites within six years of today, per the agency’s recently revised rules, or its authorization freezes at the number of satellites in operation at that date. The FCC in September relaxed its deadline, giving operators nine years to launch their full constellation, but even those rules are stricter than what SpaceX would refer. The launch-provider-turned-satellite operator asked the FCC for an okay to launch 1,600 satellites in six years — just over a third of its full constellation.

SpaceX said the FCC’s deadline was “impractical” and that it could start broadband service without the full constellation. The FCC said no, but gave SpaceX permission to re-submit a waiver request in the future. SpaceX said in October it plans to start service with 800 to 900 satellites.

SpaceX’s constellation is the largest of all the applicants, generating concern about its potential to enshroud the Earth in a cloud of space debris. Fleet operators OneWeb, Spire, SES and Space Norway all expressed concern about how SpaceX will protect the space environment when operating so many satellites. But weighing more heavily with the FCC was NASA, which said a constellation as large as SpaceX’s likely needs to meet more stringent standards than what NASA recommends for de-orbit reliability. NASA’s reliability standard is that at least 90 percent of satellites can deorbit properly after their mission is complete.

The FCC did say that SpaceX will have the right in the future to request a waiver on the launch deadline.

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Blue Origin changes engines for New Glenn second stage

9:07 am

Capitalism in space: In order to maintain its goal of launch its orbital New Glenn rocket by 2020, Blue Origin has changed the engine it will use in the rocket’s second stage from a version of its main BE-4 engine to new version of their already developed BE-3 engine, used in their reusable New Shepard suborbital spacecraft.

A Blue Origin executive told SpaceNews the company is shelving development of a vacuum-optimized version of BE-4 and will instead use vacuum-optimized versions of flight-proven BE-3 engines for New Glenn’s second stage and optional third stage. “We’ve already flown BE-3s, and we were already in the development program for BE-3U as the third stage for New Glenn,” said Clay Mowry, Blue Origin’s vice president of sales, marketing and customer experience. “It made a lot of sense for us to switch to an architecture where we get there faster for first flight.”

The BE-3U is the upper stage variant of the liquid hydrogen-fueled BE-3 engine that has powered Blue Origin’s reusable New Shepard spacecraft on seven suborbital test flights since its 2015 debut. Mowry said switching to the BE-3U for New Glenn’s second stage will allow Blue Origin to conduct the rocket’s first launch in the fourth quarter of 2020. He declined to say how much time the engine change saves compared to the original configuration.

This quiet change, which the company made with no fanfare, carries with it some significant information as well as important ramifications. First, the BE-3 engine is less powerful than the planned BE-4, which is why they will use two BE-3 engines in the second stage instead of one BE-4, while also extending the length of the stage to accommodate more fuel. Though they claim the change will increase the rocket’s range, I suspect however that even with these changes New Glenn’s overall orbital payload capacity will be reduced.

Second, the change indicates that development of the BE-4 engine is proceeding slower than expected, threatening their 2020 launch goal. They have had one test failure that set them back, and the change suggests to me that they are having issues with making the engine restartable.

Third, if they have problems making the BE-4 engines restartable, this means their plans to reuse the first stage of New Glenn will be impacted. While those first stage engines do not need to restart on any single flight, reusing them requires this capability.

Fourth, problems with the BE-4 might cause ULA to reject it and choose Aerojet Rocketdyne’s AR-1 engine for its new Vulcan rocket. Up to now ULA has indicated it prefers the BE-4. These issues might change that.

Fifth, this change, combined with the continuing lack of New Shepard test flights, suggests that the company is increasingly considering abandoning this suborbital spacecraft.

I am doing a lot of speculating here, and could be very wrong on many if not all of these suppositions. We shall have to wait and see.

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World View launches first balloon flight since explosion, raises $26.5 million

8:45 am

Capitalism in space: World View today launched its first Stratollite balloon flight since one exploded on December 19 as it was being prepared for launch.

The flight was commissioned by the NASA Flight Opportunities program office for two principal customers, the NASA Ames Research Center and Space Environment Technologies, both of which are studying radiation detection and its energy levels at different altitudes. The balloon vehicle is expected to gather data and stay aloft for less than 24 hours, depending on winds and landing conditions, a World View spokesman said.

More important, the company announced that it had raised $26.5 million in investment capital. All told, it is estimated that the company has raised $48.5 million in three rounds of fund-raising.

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