Tag: engineering

Water ice found near Martian equator

8:27 am

A review of old Mars Odyssey data has revealed the presence on Mars of water ice near the planet’s equator.

The article makes a big deal about the importance of this discovery for the possibility of past or even present life on Mars. I say that its real importance relates to future colonists, and cannot be understated.

I should add one caveat: The resolution of the data is not great, 290 kilometers, which leaves a lot of room for error.

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Proton successfully launches Russian military satellite

8:19 am

Russia today successfully used its Proton rocket to place a military communications satellite in orbit.

Though primarily a military satellite, it will also be used by civilian customers as well.

Meanwhile, in their effort to recover from last year’s engine recall that practically shut down their launch industry, the Russians are trying to up their launch rate, with additional Proton launches now set for September 9 and 28. At the moment, they and SpaceX are tied for the most launches in 2017, and I suspect it will be a neck and neck race for the rest of the year.

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Japan’s beginning shift to commercial space

9:08 am

Link here. The article provides a good sense of the state of Japan’s private space industry, which at this moment is generally restricted one company, Interstellar Technologies, and its as yet unsuccessful effort to launch a suborbital rocket. The following quote however helps explain why Japan has been unable to interest anyone in buying its H-2A rocket for commercial launches.

Launch costs associated with Japan’s main H-2A rocket are about ¥10 billion per launch (about $90 million), so miniature satellites often ride together with bigger satellites. A period of 50 days is required between launches, meaning the number of launches is low in Japan compared to countries including the United States, Europe, Russia, China and India. Large satellites are given priority in the launch schedule, so it is often difficult to choose a launch window for miniature satellites. [emphasis mine]

I think the $90 million price is a significant reduction from what JAXA used to charge. Fifty days to prep for launch however is ungodly slow.

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Russia to launch twice from Vostochny this year

8:51 am

Russian Deputy Prime Minister announced today that Russia will launch satellites from its new spaceport in Vostochny twice in 2017, first on November 28 and second on December 22.

On July 3, Rogozin said Russia would conduct five launches from the Vostochny space center in 2018. On July 11, Russia’s Roscosmos State Space Corporation head Igor Komarov said the agency was determined to launch up to five carrier rockets for its foreign clients from Vostochny every year starting in 2019.

It appears that the Russian leadership decided to accelerate the launch schedule and move two of those 2018 launches to November and December, 2017. They must be feeling the competitive pressure coming from SpaceX, which has essentially stolen almost their entire share of the commercial launch market.

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Google Lunar X-Prize extends deadline

8:39 am

Capitalism in space: The Google Lunar X-Prize has announced that it has extended its contest deadline from the end of 2017 to the end of March 2018 for the finalists to complete their lunar rover mission and win the grand prize of $30 million.

They also announced several additional consolation prizes that all of the remaining five contestants can win should they achieve lunar orbit ($1.75 million) or successfully achieve a soft landing ($3 million), even if they are not the first to do it.

At least one team, Moon Express, will be helped enormously by the extra three months. This gives Rocket Lab just a little extra time to test its rocket before launching Moon Express’s rover to the Moon.

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Ten planetary probes track a solar eruption through the solar system

9:02 am

The path of an October 2014 solar eruption was tracked by ten different spacecraft, including Curiosity on the surface of Mars, as its blast moved outward through the solar system.

The measurements give an indication of the speed and direction of travel of the CME [Coronal Mass Ejection], which spread out over an angle of at least 116 degrees to reach Venus Express and STEREO-A on the eastern flank, and the spacecraft at Mars and Comet 67P Churyumov–Gerasimenko on the western flank.

From an initial maximum of about 1000 kilometers per second (621 miles per second) estimated at the sun, a strong drop to 647 kilometers per second (402 miles per second) was measured by Mars Express three days later, falling further to 550 kilometers per second (342 miles per second) at Rosetta after five days. This was followed by a more gradual decrease to 450–500 kilometers per second (280-311 miles per second) at the distance of Saturn a month since the event.

The CME was first detected by solar observatories Proba-2, SOHO, Solar Dynamics Observatory, and STEREO-A.It was then tracked as it moved outward by Venus Express, Mars Express, MAVEN, Mars Odyssey, Curiosity, Rosetta, Cassini, and even New Horizons and Voyager 2.

On my last appearance on Coast to Coast, I was specifically asked if the probes to Venus, Mars, and other planets have the capability to track solar events. I knew that the Voyager spacecraft had equipment to do this, but was unsure about other planetary probes. This article answers that question.

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More Russian launch delays

8:50 am

Three stories out of Russia today suggest that that country’s aerospace industry has not yet fixed all of its quality control problems.

The last two stories both refer to the launch of Germany’s Spektr-RG, which was originally supposed to launch in 2014. The most recent schedule said the astronomical observatory would be launched in September 2018. That they need an extra month in order to “integration and ground development of the Spektr-RG spacecraft” does not seem out of line. At the same time, that they do not provide any reasons for the delay raises questions.

Meanwhile, that the Proton rocket for the Amazonas-5 launch has not yet been shipped seems incredible. The September 9 launch date was announced on August 9. You would expect that by now Russian companies would know exactly how long it takes to get a rocket to the launchpad. This suggests another more fundamental problem with the rocket that they are not revealing.

I know I am being a bit harsh on the Russians here. A more positive spin (which also might be true) might be that they are finally getting a handle on their quality control issues, and the result is these few additional delays as they clean things up.

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3D printing and how it will change what things look like

9:29 pm

Link here. The article not only outlines some of the newer developments in 3D printing, it gives a nice look at how that technology is literally going to change what the things it builds look like.

Simple shapes are popular in human designs because they’re easy. Easy to design, especially with CAD, and easy to manufacture in a world where manufacturing means taking a big block or sheet of something, and machining a shape out of it, or pouring metals into a mold.

But manufacturing is starting to undergo a revolutionary change as 3D printing moves toward commercially competitive speeds and costs. And where traditional manufacturing incentivizes the simplest shapes, additive manufacturing is at its fastest and cheapest when you use the least possible material for the job. That’s a really difficult way for a human to design – but fairly easy, as it turns out, for a computer. And super easy for a giant network of computers.

The result: a stronger object, less weight, and less cost.

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The gentle storms of Saturn

10:03 am

Saturn's gentle storms

Cool image time! The Cassini image above, cropped and reduced slightly, shows a close-up view of Saturn’s cloud tops, taken during Cassini’s May 18, 2017 fly-by.

Clouds on Saturn take on the appearance of strokes from a cosmic brush thanks to the wavy way that fluids interact in Saturn’s atmosphere. Neighboring bands of clouds move at different speeds and directions depending on their latitudes. This generates turbulence where bands meet and leads to the wavy structure along the interfaces.

What I see is a much less turbulent storm pattern, when compared with Jupiter. This is not to say that the weather of Saturn is quiet or peaceful, for it certainly cannot be, considering the gas giant’s size and the depth of the atmosphere. Still, this image suggests that the turbulence is less violent here, possibly because Saturn is farther from the Sun and is hit with less solar energy, and because Saturn is smaller and thus produces less of its own internal energy.

Either way, it is beautiful and mysterious, in the way are all such images of alien places.

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Rocket Lab looks to second test flight of Electron

9:23 am

Capitalism in space: Having completed its review of its first May test flight of its Electron rocket, Rocket Lab now looks to the second test flight.

The article gives a good overview of the results from the first test flight. It also has this tidbit:

The second of Rocket Lab’s three planned test flights is scheduled later this year. If that launch goes well, the company will likely delete the third demonstration mission, and the first commercial Electron flight could be ready for takeoff by the end of December, Beck said last week.

“We’ve got the next test flight rolling out out to the pad in about eight weeks’ time,” Beck said. “If it’s a really good clean flight, we’ll probably accelerate into commercial operations.”

If they follow this schedule, then the next flight will be in mid-October, and the Moon Express launch of its lunar rover will occur in mid-December, just in time to win the Google Lunar X-Prize.

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SpaceX launch today

9:14 am

SpaceX is scheduled to resume launches at Kennedy, after a month of range upgrades by the Air Force. You can watch it live here, or here.

Launch is presently scheduled for 12:31 Eastern time to send a Dragon capsule to ISS. At the moment all looks good for an on-time launch.

The launch was a complete success, including a picture-perfect first stage landing at Kennedy.

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Amazon refunding customers who bought fake eclipse glasses

9:43 am

Amazon is issuing refunds to any customers who bought fake eclipse glasses through the site.

It is essential for people who are going to view the eclipse to understand that as long as the Sun is even partially visible, even by a sliver, it can cause significant eye damage if viewed without proper protection. Make sure your eclipse glasses or filters are safe! And remember, only during the short 2 minute or so totality that will occur in the narrow strip across the country will it be safe to look at the Sun without protection. Even so, you must do so with great caution so that you don’t mistakenly view the Sun unprotected when it is partially exposed.

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New Japanese private joint venture to enter smallsat rocket industry

9:35 am

Capitalism in space: A Japanese private joint venture has formed with the intent to compete in the new smallsat rocket industry.

The new company is led by President Shinichiro Ota, a former industry ministry bureaucrat and once the head of the Japan Patent Office. NGSRDP will initially be based at Canon Electronics’ headquarters, studying technologies and costs with the hope of starting commercial operations as early as this year.

The joint venture has set a price point of 1 billion yen ($9.1 million) or less per launch — an amount seen as competitive against overseas rivals. At present, plans call for a rocket smaller than the Epsilon rocket currently under development by the Japan Aerospace Exploration Agency, or JAXA, but larger than JAXA’s SS-520 minirocket.

The four companies had been discussing formation of a small rocket company for about three years. President Ota has said that the “time is ripe” for the joint venture. IHI Aerospace has played a key role in the development of Epsilon, while Canon Electronics has been involved in the SS-520 project.

I would say that this is a clear sign that the competition in the smallsat rocket industry is definitely heating up.

Note that the name of this new joint venture, New Generation Small Rocket Development Planning (NGSRDP), is quite horrible. I hope they come up with something better soon for marketing purposes.

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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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