Tag: engineering

Japanese launch scrubbed due to problem with rocket

9:29 am

Japan’s space agency JAXA scrubbed a Saturday launch of a GPS satellite because of a possible leak in the H2-A rocket’s helium pressurization system.

The Japanese have not released much information. However, the problem might be more serious than normal, because the rocket was still on the launchpad on Sunday, almost a day after the launch itself was scrubbed. Normally when a launch is scrubbed they move quickly to safe the rocket and get it back into the assembly building to assess the issue. That the rocket was not moved suggests they might be having a problem doing this.

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Cassini’s last close look at Titan

9:44 am

Titan's magic lake district

The Cassini science team has released the last radar swath that the spacecraft will take of Titan, imaged on April 22.

You can see the full swath up close here. The image above is my crop of the section on the swath’s right portion, showing the shoreline of the hydrocarbon lake Ligeia Mare, where periodically an island has been seen by radar to intermittently appear and disappear.

No “island” feature was observed during this pass. Scientists continue to work on what the transient feature might have been, with waves and bubbles being two possibilities.

The fly-by also took the first, and last, depth measurement of 8 other lakes, finding that they all had the same depth, suggesting they are connected by an underground “water” table. In this case, it ain’t water, but liquid hydrocarbons like methane.

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Virgin Orbit gets another launch contract

9:26 am

Capitalism in space: Virgin Orbit’s LauncherOne rocket has gained another launch contract, this time from an Italian smallsat company.

Italian small satellite builder Sitael has signed Virgin Orbit to send a technology demonstration satellite into low-Earth orbit next year. Sitael’s µHETsat, a demonstrator for a new electric propulsion system built with the European and Italian space agencies, will fly on LauncherOne “mid-next year,” Dan Hart, Virgin Orbit Chief Executive, told SpaceNews Aug. 11.

Virgin Orbit is preparing to begin commercial services with LauncherOne, its air-launched small satellite orbital vehicle, in 2018. Other customers for the launch system, which can carry 500 kilograms to LEO, include NASA, OneWeb, and Sky and Space Global.

This story further strengthens my prediction that LauncherOne (in development for 5 years) will fly in space long before SpaceShipTwo (in development for 13 years).

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Mars rover update: August 11, 2017

12:34 pm

Summary: After a two week hiatus because the Sun was between the Earth and Mars and blocking communications, both rovers are once again on the move.

Curiosity

For the overall context of Curiosity’s travels, see Pinpointing Curiosity’s location in Gale Crater.

Curiosity panorama, Sol 1782

Vera Rubin Ridge close-up

Since my last update on July 12,, Curiosity spent most of the month waiting out the solar conjunction that placed the Sun between the Earth and Mars and blocked communications. In the past few days, however, the rover has begun to send down images again while resuming its journey up Mt. Sharp. The panorama above, reduced to show here, was taken by the rover’s left navigation camera, and shows the mountain, the ridge, and the route the rover will take to circle around the steepest sections to get up onto the ridge. To see the full resolution panorama click on the picture.

To the right is a full resolution section of the area in the white box. As you can see, the geology of the ridge is many-layered, with numerous vertical seams or cracks. In order to track the geological changes across these layers as the rover climbs, the science team is as expected taking a systematic approach.

Lately, one of our biggest science objectives is to conduct bedrock APXS measurements with every 5-meter climb in elevation. This allows us to systematically analyze geochemical changes in the Murray formation as we continue to climb Mount Sharp. Yesterday’s drive brought us 6 meters higher in elevation, so another touch and go for today it is!

Below is a cropped and reduced resolution image of the most recent orbital traverse image, dated sol 1754. The dotted line shows where I think the rover’s has traveled in the last 28 sols. I have also annotated what I think is the point of view of the panorama above.
» Read more

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Cell towers to the Moon!

10:09 am

Capitalism in space: A startup that intends to land two privately built rovers near the Apollo 17 landing site in 2018 also plans to use basic cell tower technology to relay what the rovers find back to Earth.

Part Time Scientists has a launch contract for late 2018 with Space X as a secondary payload on the Falcon 9 rocket. Becker said the company believes it will be the first private entity to reach the surface of the moon, suggesting that none of the Google Lunar X Prize participants are likely to meet the December 2017 deadline for the competition. (Part Time Scientists itself withdrew from the Google Lunar X Prize earlier this year due to the time constraints of the competition.)

The Falcon 9 will carry the team’s spacecraft, Alina, to the geostationary transfer orbit, a highly elliptical Earth orbit whose highest point is 26,000 miles (42,000 kilometers). From there, Alina will continue on its own to the moon. “We will soft-land on the moon and disembark our two rovers, the Audi Lunar Quatro rovers, with which we are going to drive up to Apollo 17,” Becker said. “The two rovers are essentially mobile phones that will communicate our video stream to Alina, which serves as an LTE base station, and Alina will communicate the data to us,” he said.

What is most significant about this is that even if no one wins the Google Lunar X-Prize this year, it appears that the contest succeeded nonetheless. At least two if not five different companies appear funded and about to launch private rovers to the Moon. Once they demonstrate this capability, they will certainly be positioned to make money offering it to nations and scientists worldwide. For example, NASA and China both want to place probes in remote places on the Moon, near the poles or on the Moon’s far side. If this mission by Part Time Scientists is a success, they will then be able to offer a cheap method for relaying communications from those locations.

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Cubesat builder becomes cubesat operator as well

9:30 am

Capitalism in space: Cubesat builder Clyde Space has commissioned its first satellite communications ground station, with three more planned.

Essentially, the company appears to be moving to fill a need expressed by its satellite customers. After building their satellite for them, their customers still need someone to run it for them, and the satellite maker is ideally positioned to win that role.

This story also illustrates the continuing simplification of the technology of the satellite industry. Ground stations used to be big complicated facilities, requiring big dishes and lots of land. Now they can simply install an antenna on the roof of a building.

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Russia to spend $630 million to build Vostochny Angara launchpad

9:23 am

Despite years of construction and more than a billion dollars spent, Russia still needs to spend about $630 million more to build the Angara launchpad at its new Vostochny spaceport.

The specified sum does not include the development, manufacture and assembly of technological equipment at the launch compound, the materials say. According to the Roscosmos document, the construction completion and the commissioning of this infrastructure are scheduled for 2022.

Russian Deputy Defense Minister Timur Ivanov who visited the Vostochny spaceport in the Russian Far East in late May was informed that the construction of the launch pad for the Angara carrier rocket at this cosmodrome would cost 58 billion rubles ($968 million) and would be completed in 2023.

It appears that the Russia government is trying to reduce the overall cost and time needed to build this launchpad. I am willing to bet that this effort will fail, and the cost will raise and time to build will lengthen. And even if they meet these new targets, it is still going to take an awful lot of money and time to do it. Construction on Vostochny began in 2010. Angara’s construction began near the end of the 20th century. Overall, they are going to take decades to get this rocket off the ground. Meanwhile, SpaceX should have four launchpads in regular operation, all built for relatively little money in less than five years overall.

I don’t see anyway Russia is going to be able to compete in the global launch market, based on this information.

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SpaceX completes static fire for next launch, advances its Falcon Heavy prep

2:13 pm

Capitalism in space: SpaceX today successfully completed its routine dress rehearsal static fire in preparation for a Monday launch of a Dragon cargo capsule to ISS.

Two items of note regarding this launch. First, it will be the last cargo capsule launched by SpaceX that has not been used before. From now on they plan on recycling all cargo ships, and have actually shut down the production line building new cargo capsules. Instead, they want to focus on building new upgraded manned Dragon capsules.

Second, even as this launch goes forward, with the first stage expected to land at Kennedy on their landing pad there, they are building the second landing pad at this same site to accommodate the planned November first launch of Falcon Heavy. For that launch, the two side mounted first stages will return to Kennedy, while the core stage will land on a barge in the ocean.

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First very short movie from Jupiter

7:37 am

Using two Juno images of the same area, taken at slightly different times, scientists have produced what might be the first very short gif animation showing the changing circulation patterns in Jupiter’s atmosphere.

The animation is only two images long, so in a sense it isn’t a movie but a blink comparison. Moreover, the difference in circulation patterns between the two images is not strongly evident, partly because the two images have different resolution and somewhat different lighting. Nonetheless, this animation foretells what will should become possible with time, as Juno’s mission continues. Eventually its images will show the changes in the gas giant’s storms.

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Cassini’s last five orbits of Saturn

10:14 pm

Cassini is about to begin its last of five orbits of Saturn, before it is sent into the planet’s atmosphere to burn up.

Cassini will make the first of these five passes over Saturn at 12:22 a.m. EDT Monday, Aug. 14. The spacecraft’s point of closest approach to Saturn during these passes will be between about 1,010 and 1,060 miles (1,630 and 1,710 kilometers) above Saturn’s cloud tops.

The spacecraft is expected to encounter atmosphere dense enough to require the use of its small rocket thrusters to maintain stability – conditions similar to those encountered during many of Cassini’s close flybys of Saturn’s moon Titan, which has its own dense atmosphere. “Cassini’s Titan flybys prepared us for these rapid passes through Saturn’s upper atmosphere,” said Earl Maize, Cassini project manager at NASA’s Jet Propulsion Laboratory (JPL) in California. “Thanks to our past experience, the team is confident that we understand how the spacecraft will behave at the atmospheric densities our models predict.”

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Looking down at Saturn’s rings

9:19 am

Looking down at Saturn's rings

Cool image time! The image on the right, reduced in resolution to show here, was taken by Cassini in May and looks down at the outer rings of Saturn. The moon Prometheus can also be seen in the large gap between the main rings and the outermost F ring.

Most of the small moon’s surface is in darkness due to the viewing geometry here. Cassini was positioned behind Saturn and Prometheus with respect to the sun, looking toward the moon’s dark side and just a bit of the moon’s sunlit northern hemisphere.

Also visible here is a distinct difference in brightness between the outermost section of Saturn’s A ring (left of center) and rest of the ring, interior to the Keeler Gap (lower left).

The image clearly shows the gravitational influence of the moon on the outer ring. As Prometheus orbits past the F ring its mass creates waves through the ring’s materials.

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Webb telescope launch might be delayed again

8:59 am

Because of a scheduling conflict with a European mission to Mercury Arianespace might delay its launch of the American James Webb Space Telescope to 2019.

A time-sensitive mission to explore the planet Mercury, already delayed several times, may force the European Space Agency (ESA) and Arianespace to push back the launch of NASA’s multi-billion dollar James Webb Space Telescope (JWST) into early 2019. The mission, named BepiColombo, is currently scheduled to launch on the same rocket, the Ariane 5, from the same spaceport in French Guiana, during the same timeframe that the JWST is scheduled to launch (October 2018).

A launch delay to BepiColumbo won’t impact the science of the ESA/Japan Aerospace Exploration Agency (JAXA) mission, but it would translate to a longer journey to Mercury. The last launch delay, which pushed it from April 2018 to October 2018, also translated to a year longer voyage to reach Mercury, now expected to arrive in 2025 instead of 2024.

This is a perfect illustration of the difference between governments and private enterprise. Government-owned Arianespace has been flying its Ariane 5 rockets now for almost two decades, but they have not yet learned how to launch two rockets in one month, and don’t appear interested in trying. Meanwhile, private companies like SpaceX and ULA are both working to achieve a normal twice-a-month launch rate, with SpaceX likely to beat that in the next few years.

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Ground equipment caused premature end to first Rocket Lab launch

8:51 am

Capitalism in space: Rocket Lab’s first test flight of its Electron rocket in May was terminated early because of a loss of communications due to an “misconfiguration” of ground telemetry equipment.

The company said the fix for the issue was “simple” and that “corrective procedures” were put into place to prevent it from happening in the future. Rocket Lab said it did not make any major changes to the Electron hardware.

No word on when their second test launch will take place. For their Moon Express customer, the clock is ticking, as that company is a Google Lunar X-prize contestant that needs to launch its lunar rover before the end of this year to have a chance at winning the prize.

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SES agrees to a second Falcon 9 launch with used first stage

6:46 pm

Capitalism in space: SES has agreed to launch a second commercial satellite using a previously flown Falcon 9 first stage.

The launch of the SES 11 spacecraft, also named EchoStar 105, will be the third time SpaceX has sent a customer’s satellite into orbit with the help of a reused rocket stage. Industry officials said SES, EchoStar and SpaceX agreed in recent weeks to shift the satellite from an all-new rocket to one with a previously-flown first stage. The SES 11/EchoStar 105 satellite will likely ride a Falcon 9 first stage that first flew Feb. 19 with a Dragon supply ship heading for the International Space Station, one source said, but a firm assignment has not been confirmed. That vehicle returned to a vertical touchdown at Landing Zone 1 at Cape Canaveral Air Force Station.

Liftoff from a Florida launch pad is scheduled no sooner than around Sept. 27, a couple of days after a United Launch Alliance Atlas 5 rocket is set to haul a classified payload into orbit for the National Reconnaissance Office, the U.S. government’s spy satellite agency.

The most wonderful aspect of this is how routine it is steadily becoming.

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One of Jupiter’s mid-sized storms

8:54 am

One of Jupiter's mid-sized storms

Cool image time! The Juno image on the right, cropped to show here, focuses in on one of Jupiter’s mid-sized storms near its high northern latitudes and just on the edge of the chaotic polar region.

This storm is a long-lived anticyclonic oval named North North Temperate Little Red Spot 1 (NN-LRS-1); it has been tracked at least since 1993, and may be older still. An anticyclone is a weather phenomenon where winds around the storm flow in the direction opposite to that of the flow around a region of low pressure. It is the third largest anticyclonic oval on the planet, typically around 3,700 miles (6,000 kilometers) long. The color varies between red and off-white (as it is now), but this JunoCam image shows that it still has a pale reddish core within the radius of maximum wind speeds.

Be sure to take a look at the full image, which provides a bit of context.

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New images downloaded from Curiosity for the first time in two weeks

9:15 am

For the first time since communications with Mars ceased two weeks ago because the orbits of the Earth and Mars had placed the Sun in between, new images have been downloaded from Curiosity.

For the past two weeks, the last raw images posted had been from sol 1760. Today, the Hazard Avoidance Cameras (Hazcams) added daily images through sol 1774 (taken as per previously uploaded commands). The images all show the same view, the part of Vera Rubin ridge that the rover has been circling around to get to the place where it will be easier to climb up. The science team probably programmed this sequence so that they could look for any changes from wind, over time.

No new images from either Curiosity’s other cameras or from Opportunity have yet appeared, but I expect this to soon change.

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India to almost double launch rate with new rocket assembly building

9:01 am

Capitalism in space: India’s space agency ISRO is building a second rocket assembly facility at its Sriharikota spaceport so that it can prepare two rockets for launch simultaneously.

“We have not reached the limit of two launchpads. With the new assembly facility, we will be able to assemble more vehicles. Once we are able to assemble more rockets but not able to launch them even by reducing launch timings, then we will start work on the third launchpad. But for that, we first need (government’s) approval. So, we are gradually working to eliminate all bottlenecks to increase the frequency of launches.” With the new facility, Isro can achieve launch 12 rockets in a year from the seven at present.

The Times of India also recognizes the value of this upgrade. To quote the article, “With the increased frequency of foreign satellite launches, ISRO can rake in big moolah.”

I couldn’t have said it better myself.

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Vector live streaming test launch

8:53 am

Capialism in space: If you want to watch today’s test launch by Vector, the company is live streaming the event.

As I post, the rocket is vertical in a small clearing surrounded by woods, with a small group of workers at its base.

Update: One minute to launch.

Update: Launch at 9:25 am. The rocket cleared the tower perfectly. We will have to wait for updates from the company to see how things went beyond that.

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Lockheed Martin begins construction of new satellite factory

7:12 pm

Capitalism in space: Lockheed Martin has begun construction of a $350 million satellite factory in Colorado, with expected completion in 2020.

At the moment, Lockheed does not have a competitive rocket. Moreover, its only big space project is Orion, which might never fly more than twice, if that. Thus, this shift to satellites makes some sense, as it will be difficult now for the company to gain market share in the launch and manned spacecraft markets. It is too far behind. However, there is a new industry developing in smallsats, and Lockheed is well positioned to get in at the start.

Update: I do this all the time, but I made a mistake here and assigned the Delta family of rockets to Lockheed Martin. For some reason I make this mistake often, switching Atlas 5 and Delta and Lockheed Martin and Boeing. I apologize for the error.

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Virgin Orbit’s launch jumbo jet arrives at company’s base in California

9:19 am

Capitalism in space: The modified jumbo jet that Virgin Orbit is going to use as the first stage of its LauncherOne rocket, being designed to put smallsats into orbit, arrived yesterday in Long Beach to put it close to the company’s base of operations.

While some of this story is the typical hype we all should expect — and question — from a company run by Richard Branson, Virgin Orbit looks more like the real thing. Last year it was separated from Virgin Galactic, the company that has been promising and failing to fly tourists on suborbital flights now for more than a decade. I suspect this happened because the LauncherOne group did not want to be saddled any longer with the failures of the SpaceShipTwo group.

I have been predicting that LauncherOne will reach space before SpaceShipTwo, and this story only adds weight to that prediction. They have real satellite contracts, and expect their first launch to occur in 2018. While that schedule might not hold, I suspect it will not be far wrong.

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Robots communicating in languages humans can’t understand

10:04 am

The rise of the machines! When two bots of its artificial intelligence software (AI) began to communicate in a language humans could not understand, Facebook researchers put a stop to it.

At first, they were speaking to each other in plain old English. But then researchers realized they’d made a mistake in programming. “There was no reward to sticking to English language,” says Dhruv Batra, visiting research scientist from Georgia Tech at Facebook AI Research (FAIR). As these two [robot] agents competed to get the best deal–a very effective bit of AI vs. AI dogfighting researchers have dubbed a “generative adversarial network”–neither was offered any sort of incentive for speaking as a normal person would. So they began to diverge, eventually rearranging legible words into seemingly nonsensical sentences.

…Facebook ultimately opted to require its negotiation bots to speak in plain old English. “Our interest was having bots who could talk to people,” says Mike Lewis, research scientist at FAIR. Facebook isn’t alone in that perspective. When I inquired to Microsoft about computer-to-computer languages, a spokesperson clarified that Microsoft was more interested in human-to-computer speech. Meanwhile, Google, Amazon, and Apple are all also focusing incredible energies on developing conversational personalities for human consumption. They’re the next wave of user interface, like the mouse and keyboard for the AI era.

The other issue, as Facebook admits, is that it has no way of truly understanding any divergent computer language. “It’s important to remember, there aren’t bilingual speakers of AI and human languages,” says Batra. We already don’t generally understand how complex AIs think because we can’t really see inside their thought process. Adding AI-to-AI conversations to this scenario would only make that problem worse.

The article makes some interesting points about the advantages of allowing this AI software to create its own language. For me, none of these arguments are very convincing.

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Booking service now available to rocket and satellite companies

9:41 am

Capitalism in space: A new company, Precious Payload, is now offering a booking service to both rocket companies and satellite manufacturers to make it easier to match them together.

In the Precious Payload concept, launch providers and brokers share and exchange their immediate and future availability of inventory with the independent Precious Payload GDS, including the status of reservations of inventory (eg. available, reserved, booked, etc.).

Anyone who wants to launch a satellite uploads their mission profile into the Precious Payload GDS. A special algorithm then analyses the data and shows the real-time availability of launchers for specific types of mission.

Launch providers, both manufacturers and brokers, can benefit from the Precious Payload GDS by being able to open another sales channel for their core businesses. They not only receive and process the booking requests from satellite companies, but also browse through the backlog of satellites waiting for launch and bid for their business. Advanced services like rebooking the launches and effectively managing client cancellations and launch failures raise the bar for customer experience in the market.

To pitch their product, they are presently offering their initial service for free.

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Next test flight of Rocket Lab’s Electron rocket delayed

9:34 am

Capitalism in space: Rocket Lab has revealed that the second test flight of its rocket Electron is still several months away.

Rocket Lab is in the early stages of a three-vehicle test programme and Moon Express is still developing its lander at its facilities at Cape Canaveral, from where Apollo missions were launched. Rocket Lab’s first test launch successfully made it to space in late May. The first stage performed as it should but the second stage failed to deliver the payload to orbit.

Results of data analysis from the test flight could be available some time next week.

Earlier this month Rocket Lab founder Peter Beck said the company and its investors had confidence in the programme and they had another five rockets in various stages of production.
Beck said then a second test launch was about two or three months away and the company hoped to get its commercial launches underway as soon as it was satisfied with the test programme.

The company had previously said it hoped to launch the second test flight in mid-2017. It appears now that the second launch will not happen before October.

The article is strangely focused on selling the idea that Moon Express’s Google Lunar X-Prize flight, which must occur by the end of this year, is still on track. I don’t see how, with this news. Rocket Lab must first complete its three test flights, and I don’t see how they can do this, get their results, and update their engineering and still get this first commercial flight off by December.

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Japanese private rocket launch terminates early due of communication failure

9:14 am

Capitalism in space: The first launch of the first privately-built and funded Japanese suborbital rocket was terminated early today because of a communications failure.

The rocket’s developers, Interstellar Technologies, said they aborted the launch after about 80 seconds and it landed about 8 kilometers (5 miles) offshore. The aim had been to launch the rocket, called “Momo,” to an altitude of 100 kilometers (62 miles), but it only traveled about 30-40 kilometers (19-25 miles).

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