Tag: spaceflight

Comet 67P/C-G goes boom!

7:48 am

Outburst on Comet 67P/C-G

Cool image time! On August 22, just days after its closest approach to the sun, Rosetta caught the outburst, image above, from the larger lobe on Comet 67P/C-G.

The image scale is 28.6 m/pixel and the image measures 29.3 km across. Although the activity is extraordinarily bright even in the original (below), the image above has been lightly enhanced to give a better view of the outline of the nucleus in the lower part of the image, as well as to show the full extent of the activity.

The most interesting images, I think, will actually come later, when the activity dies down and they can bring Rosetta in closer again. We will then be able to compare the nucleus both before and after this outburst, getting a sense of how the comet changes with each close pass to the sun.

Leave a comment

Launch of India’s big rocket a success

8:54 am

The competition heats up: India has successfully launched a military communications satellite using its home-built Geosynchronous Satellite Launch Vehicle (GSLV).

Because of India’s bad habit of not giving distinct names to its space vehicles or spacecraft, I have discovered a bit a confusion about the version of GSLV that just launched. This rocket was built entirely in India, but it is the Mark II, not the Mark III, which is a significant upgrade and has so far only had one test flight.

Nonetheless, today’s Mark II launch is the second success in a row for the India-built version. Considering the number of failures of this version in the past, this success is a significant milestone for India’s space effort.

Leave a comment

India starts countdown for the launch of its big rocket

8:57 am

The competition heats up: India has begun the countdown for the third launch of its entirely homebuilt Geosynchronous Satellite Launch Vehicle (GSLV) rocket.

The launch is set for Thursday, and is attempting for the first time to place an actual payload into orbit, an Indian military communications satellite. Previous launches either failed with earlier versions of the rocket, or were carrying dummy payloads.

Leave a comment

Russia delays first manned Vostochny launch seven years

8:41 am

The heat of competition: Russia has finally admitted that it will not be able to fly manned missions from its new Vostochny spaceport in 2018, and had instead rescheduled that first flight for sometime in 2025.

The reasons were not spelled out, and it was unclear if financial considerations were behind the delay.

Space agency spokesman Mikhail Fadeyev made clear the change of plan in stating: ‘The first manned flight from the Vostochny Cosmodrome is scheduled for 2025 with an Angara-AV5 rocket, according to the federal space programme.’ The move reflected the ‘founding principle of Vostochny as an innovative cosmodrome’, he claimed. Under the plan, the first test flight of the Angara-A5B is scheduled for 2023, while the rocket’s first unmanned flight is slated for 2024.

Russian prime minister Dmitry Medvedev recently visited the spaceport, stressing the importance of the first unmanned launch, due in four months from now, being a success. His statement appeared to allow for the possibility of slippage in this timetable also.

Vostochny was first proposed in 2007, so that means it will take Russia almost two decades to get this spaceport ready for manned flights. Only a government operation, designed to create jobs instead of accomplishing something, takes such an ungodly long time to get finished.

Meanwhile, Russia will continue to use Baikonur for manned flight for at least one more decade.

One comment

Cubesats to the Moon!

5:05 pm

NASA has chosen three cubesat missions to fly lunar planetary orbiters to the Moon, to be launched on the first SLS flight in 2018.

LunaH-Map, along with a number of other deep-space CubeSats, is a candidate to fly to lunar orbit on Exploration Mission-1, the first flight of NASA’s Space Launch System (SLS), which will be the most powerful rocket ever built and will enable astronauts in the Orion spacecraft to travel deeper into the solar system. NASA will provide several CubeSat missions spots on the maiden SLS mission. LunaH-Map is a 6U (“6 unit”) CubeSat. One “unit” is a cube measuring 4.7 inches on a side; LunaH-Map strings six of these CubeSat building blocks together and weighs as much as a small child (about 30 pounds). …

“NASA has funded three different CubeSats to learn more: Lunar IceCube, Lunar FLASHLIGHT and LunaH-Map. They all look for water in different ways and provide different types of information,” [said principal investigator Craig Hardgrove].

The article is focused on LunaH-Map, not on the other two cubesats, but the fact that NASA plans to use “the most powerful rocket ever built” to launch the first three planetary cubesats, so small they could almost be launched by a model rocket, illustrates some of the problems of the SLS program. Even though that first SLS flight is likely to happen, I suspect that, should it falter for any reason (something that would not surprise me), these cubesats could easily be launched on another rocket, and will be.

Putting SLS aside, however, the building of these first planetary cubesats is a very significant development. It once again signals the way unmanned satellite engineering is evolving, finding ways to build spacecraft smaller and less costly.

Leave a comment

New sharp images of Ceres from Dawn

9:13 am

The Lonely Mountain on Ceres/>

Cool image time! The Dawn science team has released new images of Ceres, including one of a single mountain they have dubbed the Lonely Mountain.

The mountain, located in the southern hemisphere, stands 4 miles (6 kilometers) high. Its perimeter is sharply defined, with almost no accumulated debris at the base of the brightly streaked slope with bright streaks. The image was taken on August 19, 2015. The resolution of the image is 450 feet (140 meters) per pixel.

I have cropped the image and posted it on the right. Be sure to look at the full resolution version. Not only does the mountain have no debris at its base, it truly is lonely. There are no similar features anywhere near it. It almost looks like someone took a shovel of material out of the ground to create the crater immediately to the south and then dumped that material to create the mountain.

Note that the mountain is more like a mesa, with a flat top, which suggests it is the remains of a higher elevation surface that eroded away in the distant past. The geological processes that could have done this however remain quite puzzling at this point.

10 comments

An update on XCOR’s Lynx suborbital craft

8:08 am

The competition heats up: According to one XCOR official, its first Lynx suborbital spacecraft is 6 to 9 months from launch.

Peck estimated that XCOR is six to nine months away from the Lynx 1’s first flight. The main structure is complete and the wing mounts are being made. Once the craft is put together, the team in Mojave will do ground testing at the Mojave Air & Space Port. Peck cited the longer runway at Mojave and the ability to do extensive testing there without shutting down a commercial airport as reasons for doing the test back in California. …

As the Lynx 1 approaches completion, the team is already starting to work on components for the Lynx 2, according to Peck. Peck described the Lynx 1 as a testing vehicle, while the Lynx 2 will be the vehicle that first transports paying customers into suborbital space. The Lynx 3 will be similar to the 2 except that it will have a dorsal pod to carry experiments and microsatellites. [emphasis mine]

I know many space activists have been repeatedly annoyed at me for my continued skepticism of XCOR, but the highlighted news above, that the Lynx craft under construction is only a test vehicle, illustrates why I am skeptical. Until now XCOR has never stated publicly that this Lynx craft was only for testing. Instead, their press releases and public comments have implied that after testing it would be used for paying passengers.

Then there is this: Their last press release update about Lynx’s construction is no longer available on the web. Nor are other press releases. In my experience, legitimate companies do not put their press releases into the memory hole, they keep them available because they help generate publicity. Companies that make them vanish, however, are usually hiding something, and are also generally the companies that in the end do not accomplish what those press releases promise.

Back in 2012 XCOR promised that Lynx would begin test flights that year. They did not. Delays like this are understandable, and are not a reason by itself to be skeptical. Repeated failures to deliver promises however are reasons to be skeptical. For example, they first announced Lynx to great fanfare in 2008, saying then that they hoped to be flying in two years. I did not believe it then, and I was right.

I truly want XCOR to succeed, but I also am not willing to be a PR hack for them. They need to do it for me to believe them.

10 comments

Cassini’s last close-up images of Dionne

2:44 pm

Dionne on August 17, 2015

Cool image time! NASA has released images from Cassini’s Monday close fly-by of Saturn’s moon Dionne.

The press release itself did not include any of the close-ups for some reasons. You have to dig for them at the site. Go here, here, here, and here to see a few of more interesting, the first of which is a global view taken just before the fly-by. The second is the highest resolution image, with a resolution 10 feet per pixel. The third shows the nighttime surface lit entirely by reflected light from Saturn. The fourth, shown on the right, was taken from an altitude of 470 miles with a resolution of 150 feet to the pixel. It shows the moon’s rolling, pock-marked, and cratered surface, to the horizon.

Leave a comment

Russians consider building reusable rocket

9:17 am

The competition heats up: Roscosmos is studying proposals for building a reusable first stage that will use wings to return to the launchpad for later reuse.

The project draft has been created as part of Russia’s 2016-2025 space program. According to Izestia, Russia could spend over 12 billion rubles (around $180 million) on the creation of the reusable first stage before 2025. The newspaper cites space experts as saying that satellite launches could become much cheaper with the use of renewable launchers as they would allow to save millions of dollars on engines installed on the first stage of the rocket. The cost of the engines used on the current expendable launch vehicles is $10-70 million.

I’m not sure how seriously we should take this. The Russians consider lots of proposals, many times leaking the proposals to the press for any number of reasons. Most of those proposals never come to fruition.

Nonetheless, SpaceX’s effort to make its Falcon 9 first stage reusable, thus making it far less expensive than anyone else’s, is clearly influencing the Russians, as it has ULA and the Europeans. They are feeling competitive pressure, and are thus compelled to respond.

Leave a comment

A detailed status update on Mars Reconnaissance Orbiter

8:37 am

Link here. The orbiter, which continues to send down spectacular images while acting as a workhorse communications relay for the rovers on the ground, appears to be in reasonable shape. It has enough fuel to operate into the late 2020s. The other known problems appear manageable.

Zurek said the most significant technical issue aboard MRO is in one of the spacecraft’s inertial measurement units used to determine the orbiter’s motion and orientation. Zurek said a laser inside one of the unit’s gyroscopes is showing signs of aging, and ground controllers are trying to coax the sensor along by switching to an identical backup unit.

In the meantime, engineers are working on changing the orbiter’s navigation logic to rely on star trackers in case both navigation sensors go down, Zurek said. One of the gimbals used to point MRO’s power-generating solar panels toward the sun is also sticky, a sign of age-related “arthritis” aboard the spacecraft, Zurek said.

MRO also abruptly switches to its backup “B side” computer on occasion, temporarily interrupting scientific observations for a few days each time. Zurek said the orbiter’s ground team has learned to deal with the problem, which has escaped diagnosis with a root cause.

Of course, there are always the unknown problems that haven’t yet popped up that could be devastating. Let us hope none appear soon, since NASA will not be able to send a replacement until 2022, at the earliest.

Leave a comment

Soyuz rocket builder proposes major upgrade

8:30 am

The competition heats up: The head of the Russian company that builds the Soyuz rocket said today that a new upgrade of that rocket could be built and flying by 2022.

Russia’s future Soyuz-5 carrier rocket will be equipped with advanced new engines using ecology-friendly fuel, according to Alexander Kirilin. “One of the distinguishing features of the Soyuz-5 is the use of liquefied natural gas as fuel,” Kirilin said in an interview with RIA Novosti published on Tuesday. “The engines will be developed from scratch, which would allow us to apply a variety of advanced technological and economic characteristics that would make Soyuz-5 competitive on global markets,” Kirilin said. “The design of Soyuz-5 allows the addition of extra side blocks to make it a heavy-class rocket, but we are focusing now on a prototype with operational payload of 9 metric tons,” he added.

At the same time, Kirillin stressed that the Soyuz-5 will not compete with the ongoing development of the Angara family of carrier rockets. [emphasis mine]

Kirillin is doing a political dance with this interview. On one hand he is trying to sell to the Putin government the idea of developing a new version of the Soyuz rocket — thereby giving his company work for decades hence — in order to increase Russia’s ability to compete in the international launch market. On the other hand, he has to convince that same government that this new Soyuz will not compete with Russia’s new Angara rocket.

The two ideas are contradictory, especially if the upgrade allows the Soyuz to be modular and scalable so it can launch larger payloads, like Angara.

Kirillin’s problem is that the only investment capital available to him comes from the government, which now controls the entire Russian aerospace industry. Under this Soviet-style monolithic set-up, he is not allowed to compete with other Russian companies. However, if he doesn’t convince the government to build something, his company will no longer have a reason for existing.

In other words, creating a single government organization to run all of Russia’s space industry, as Putin’s government has done, was very counter-productive in the long run. It discourages competition while naturally causing the industry to shrink.

Leave a comment

Orbital ATK cargo contract extended

4:56 pm

The competition heats up: NASA has ordered two more cargo flights from Orbital ATK.

Orbital ATK, Dulles, Virginia, will fly two more missions under its 2008 contract for a total of 10 flights, according to Orbital ATK spokeswoman Vicki Cox. The company designated the missions OA-9e and OA-10e, Cox said. She declined to say when those flights will occur, although the company has said it plans to launch any new CRS missions it gets from NASA on Antares once it completes two deliveries using United Launch Alliance’s Atlas 5 rocket. The Atlas 5 launches are slated for December and early 2016 from Cape Canaveral, Florida.

NASA may also order additional cargo flights from its other CRS contractor, SpaceX of Hawthorne, California. “A modification is in work with both [CRS] providers,” NASA spokeswoman Stephanie Schierholz wrote in an Aug. 13 email. “Additional missions for SpaceX are still under discussion.”

That this contract extension occurs about the same time NASA decided to delay its decision on the second round of cargo contracts is probably not a coincidence. It suggests to me that the agency is probably seriously considering awarding one of the next contracts to a more risky proposal, such as Sierra Nevada’s Dream Chaser. In that case, extending the present contracts gives them some additional margin should the new contractors have problems.

One comment

NASA postpones decision again for 2nd ISS cargo contracts

8:44 am

In the heat of competition: NASA has again delayed its decision on awarding its second round of contracts for providing cargo to ISS, delaying the decision from September until November 5.

The launch failures this year is the major reason NASA has held off making a decision. They need to see how both SpaceX and Orbital ATK react to the failures, as both have also bid for second round contracts.

Leave a comment

Astronomers photograph an exoplanet

2:14 pm

51 Eridani b

Cool image time! Astronomers have used the Gemini Telescope on Mauna Kea to take the clearest image yet of a Jupiter-sized gas giant orbiting another star 96 light years away.

Once the astronomers zeroed in on the star, they blocked its light and spotted 51 Eri b orbiting a little farther away from its parent star than Saturn does from the sun. The light from the planet is very faint — more than one million times fainter than its star – but GPI can see it clearly. Observations revealed that it is roughly twice the mass of Jupiter. Other directly imaged planets are five times the mass of Jupiter or more. In addition to being the lowest-mass planet ever imaged, it’s also the coldest — about 800 degrees Fahrenheit — and features the strongest atmospheric methane signal on record. Previous Jupiter-like exoplanets have shown only faint traces of methane, far different from the heavy methane atmospheres of the gas giants in our solar system.

All of these characteristics, the researchers say, point to a planet that is very much what models suggest Jupiter was like in its infancy.

The exoplanet is the bright spot near the bottom of the image.

3 comments

Cassini’s last fly-by of Dionne on Monday

2:05 pm

Dionne

On Monday August 17 Cassini will make its last close fly-by of Saturn’s moon Dionne, dipping to within 295 miles of the surface.

During the flyby, Cassini’s cameras and spectrometers will get a high-resolution peek at Dione’s north pole at a resolution of only a few feet (or meters). In addition, Cassini’s Composite Infrared Spectrometer instrument will map areas on the icy moon that have unusual thermal anomalies — those regions are especially good at trapping heat. Meanwhile, the mission’s Cosmic Dust Analyzer continues its search for dust particles emitted from Dione.

The image of Dionne above is from a June 16, 2015 fly-by, The diagonal line at the top is Saturn’s rings.

After more than a decade, Cassini’s mission is in its final stages. When completed, we will have no way for decades to get close-up images of this gas giant, its spectacular rings, or its many very different moons.

Leave a comment

DARPA awards phase 2 space plane contracts

9:05 am

The competition heats up: The second phase contracts in the development of a reusable space plane have been awarded by DARPA.

DARPA has awarded $6.5 million each to three companies for developmental design work, including Boeing (in partnership with Blue Origin), Northrop Grumman (in partnership with Scaled Composites and Virgin Galactic), and Masten Space Science Systems (in partnership with XCOR Aerospace).

The requirements are that the plane fly 10 times in 10 days, reach Mach 10+, put a 3,000 to 5000 pound payload in orbit, and cost less than $5 million per flight. In this new phase, the companies are to deliver finalized designs by 2016, with prototype development to follow.

3 comments

NASA considers using Bigelow module for deep space missions

8:56 am

The competition heats up: Rather than build something in-house for gobs of money and decades of work, NASA is considering using Bigelow Aerospace’s largest inflatable modules for its deep space missions.

What has happened is that NASA has signed a joint agreement with Bigelow to study the possibility of using Bigelow’s B330 module as a transport habitat on long flights. The agency really has no choice, as it doesn’t have the funding to develop the necessary large spacecraft for these missions, and Bigelow can provide them to it for much less.

This description of the background of Bigelow’s inflatable modules illustrates why NASA can’t build these itself:

The B330 evolved from the Genesis I and II modules that Bigelow Aerospace had launched into space. Those technology demonstrators were born out of the NASA project known as TransHab. The TransHab was an inflatable module designed for the ISS but was ultimately cancelled in 1999 due to budget constraints. The module would have provided a 4 level 27.5 feet (8.4 meter) diameter habitat for the astronauts.

After TransHab was cancelled, Bigelow worked with NASA on a technology transfer, giving Bigelow Aerospace exclusive rights to the technology. Using this technology, Bigelow designed, built and launched two technology demonstrators. They are still on orbit today. Genesis I was launched in 2006 with it’s sister ship launching in 2007. Both ships tested flight operations processes and on-board electronics and have performed above design specifications. [emphasis mine]

Unlike NASA, as a private company Bigelow was able to build this technology quickly and at a low cost. With the new agreement, the goal will be study the operation of a B330 in independent flight in low Earth orbit. Whether an actual B330 will be build and launched however is not yet clear.

4 comments

The Space Show modernization crowd-funding campaign

12:52 pm

For more than a decade David Livingston has been producing and hosting The Space Show, the aerospace industry’s most important outlet for telling the public what is happening in space.

Now David is starting a crowd-funding campaign to finance a major update to The Space Show archives, in order to make them fully searchable and thus accessible to historians and researchers. As he notes,

Our archives as of this morning contain 2, 524 interview programs. These interviews tell the story of the space industry as many guests were there when it started, when we went to the Moon, and even before SpaceX was started. But as it stands, nobody can search our archives for information, program content, breaking news, etc. The closest one can come to a search is the GuestSearch tool on our current website, but searches are not interactive and about two-thirds of our programs have no key words so a search using the GuestSearch tool is not very useful Space Show archives are a treasure of information and history. By making them fully searchable and of archival quality, everyone benefits, even the casual Space Show listener.

As a space historian, I think David’s effort here is essential. The data hidden in the Space Show archives is invaluable, describing the beginning of the commercial space industry better than any other source. Making it searchable would make this history available to future generations that otherwise would never see it.

Check out the campaign as well as the Space Show support site and contribute. Not only can you help future space historians you will help keep the Space Show on the air.

One comment

Contract to build upgraded Vega rocket signed

9:58 am

The competition heats up: The European Space Agency today signed a contract to develop an upgraded version of its Vega rocket.

With respect to the VEGA configuration currently in operation, VEGA C aims to increase the load capacity of the orbital launcher up to 50%. Together with a further increase in operational flexibility, while maintaining its unrivalled orbital precision, it is expected to expand the capability to transport in the same flight a larger number of small satellites, in different orbital planes, or larger satellites. The new version of VEGA will be flight qualified in late 2018 for an entry into service as early as 2019. The group of countries which already participated in the development of VEGA, with Italy playing a major role with a 65% participation, welcomes now the entry of Germany.

I get the impression from this article that Vega is being used by ESA to spread the pork around, since to get Ariane 6 built they had to agree to not do so and give the work and control entirely to Airbus Safran. I thus wonder how competitive Vega will truly be.

Leave a comment

Orbital ATK orders second Atlas 5 for launching cargo to ISS

9:43 am

In the heat of competition: Even as it has accepted delivery of two new Russian engines to power its Antares rocket, Orbital ATK has ordered a second Atlas 5 rocket to launch its Cygnus cargo capsule to ISS.

I suspect they want to give themselves some cushion time to test and install these new Russian engines prior to an actual launch. In order to fulfill their contract with NASA, however, they have to launch several times next year, thus requiring more replacements for Antares.

Leave a comment

Where is Pluto’s nitrogen coming from?

9:28 am

As New Horizons’ engineers download data and plan future maneuvers to fly past one of two candidate Kuiper Belt objects, the science team today outlined the background mystery of Pluto’s nitrogen.

Pluto’s atmosphere is similar to Earth’s in that it is predominantly composed of nitrogen (N). But Pluto’s atmosphere is ~98% N, while Earth’s is only ~78% N. Pluto’s atmosphere is also considerably thinner than Earth’s with ~10,000 times lower pressure at the surface.

The nitrogen in Pluto’s atmosphere (in the form of N2 gas) is actually flowing away and escaping the planet at an estimated rate of hundreds of tons per hour. We also see what looks like flowing ice on Pluto’s surface in high resolution images made by New Horizons. The water ice (H2O) that we are familiar with on Earth would be completely rigid and stiff at Pluto’s surface temperatures, but ice made out of N2 would be able to flow like a glacier. So where does all of this nitrogen come from?

They have rejected comets as a source, and have predicted that geologic activity on Pluto itself could dredge the nitrogen up from the planet’s interior. (This prediction by the way was made before the New Horizons’ flyby, which has proved it likely.)

If their theory ends up the answer, then they will also prove that Pluto is losing mass, albeit slowly. Nitrogen from within is being processed out of the interior, into the atmosphere as gas, and then into space because Pluto’s gravity is too small to hold it.

One comment

Ten years after the Russians did it, NASA finally produces lettuce in space

9:29 am

Lots of news stories today about yesterday’s lettuce feast on ISS, where a Japanese and two NASA astronauts chowed down on lettuce grown in a NASA-built space greenhouse, ten years after the Russians did it with the American-built and still working LADA greenhouse.

Almost all the stories below, however, fail to note that earlier effort, and instead make the false claim that this NASA experiment is the first to grow lettuce in space.

Only the last article, written at an alternative space news website normally focused on the collection of space memorabilia, gets it right, noting that the Russians did it more than a decade ago and have since then been regularly growing lettuce, peas, and radishes on ISS — and eating them. (They also link to the 2003 Air & Space article I wrote on this very subject.)

Meanwhile, take a scan of all the important mainstream news outlets above, none of whom did the slightest bit of research or fact-checking so they could find out that NASA’s experiment now is not the first, and in fact is more than a decade behind an earlier co-operative effort between the Russians and Utah State University.

This should make you wonder if maybe their other news research is as sloppy.

6 comments

Update on Boeing’s CST-100

8:55 am

This article provides an update on the status of the construction of Boeing’s CST-100 manned capsule.

It also describes NASA’s lobbying effort with Congress to get the full budget it had proposed for the construction of the commercial crew spacecraft.

I note instead the apparent bureaucratic focus of all the work Boeing seems to be doing.

Following the CBR [Certification Baseline Review], Boeing successfully completed the Ground Segment CDR (Critical Design Review) on 4 December 2014 before moving onto the Phase 2 Safety Review (Part B) in early January 2015. By mid-March, Boeing completed the Phase 2 Safety Review (Safety Technical Review Board Readiness) and moved on to the Delta Integrated CDR, which took place on 27 March 2015.

Since then, Boeing has spent the summer months conducting the Phase 2 Safety review (STRB 80%) as well as producing the CDR for the launch elements of the program and the Qualification Test Article Production Readiness Review.

Moreover, in late July, teams at the Kennedy Space Center began building the Structural Test Article (STA) for the CST-100 capsule inside former Orbiter Processing Facility bay 3 (OPF-3).

Lots of reviews, but notice in the last paragraph they have only begun building the first capsule. As much as these reviews might help them make sure they are doing things right, they seem to create a situation where the company is able to slow-walk construction to help NASA with its congressional lobbying effort, while simultaneously making it sound like they are accomplishing a lot.

Leave a comment

Sudden outburst activity on Comet 67P/C-G

8:38 am

jet on Comet 67P/C-G

Cool image time! As Comet 67P/C-G approaches perihelion, Rosetta is detecting and imaging more and more activity coming from the nucleus, including a power outburst lasting less than a half hour.

In the approach to perihelion over the past few weeks, Rosetta has been witnessing growing activity from Comet 67P/Churyumov–Gerasimenko, with one dramatic outburst event proving so powerful that it even pushed away the incoming solar wind.

The comet reaches perihelion on Thursday, the moment in its 6.5-year orbit when it is closest to the Sun. In recent months, the increasing solar energy has been warming the comet’s frozen ices, turning them to gas, which pours out into space, dragging dust along with it.

The three pictures above were taken 18 minutes apart. The first shows nothing, and in the last the jet has almost completed dissipated. In the middle image, however, the jet is well defined, and data from the spacecraft indicated that it was so strong that it “had pushed away the solar wind magnetic field from around the nucleus.”

3 comments

The mobile launch building at Vostochny

8:27 am

At their new spaceport at Vostochny, the Russians are building a moveable launch building that will enclose their Soyuz rockets prior to launch.

Painted in elegant blue and white and standing almost 50 meters high, the Mobile Service Tower, MBO (for Mobilnaya Bashnya Obsluzhivaniya), is designed to provide personnel access to the Soyuz rocket during the countdown to liftoff from its launch pad in Vostochny. The structure can be also used to service the pad after launch and to process the rocket in case of an aborted liftoff.

With the tower in place, technicians can easily reach practically any part of the rocket as high as 37 meters above the surface of the launch pad. Internal access bridges of the tower surround the upper portion of the first and second stage, the third stage and the payload fairing.

The article also notes that “for decades, Soviet soldiers and officers and later their Russian civilian successors had to brave winter cold and summer heat preparing Soyuz rockets for launch on open-air gantries in Baikonur and Plesetsk. But in a sign how times have changed, the new generation of rocketeers will be protected from snow and rain with a climate-controlled tower completely enclosing the Soyuz rocket before liftoff from its newest launch pad at Russia’s Vostochny Cosmodrome.”

The irony here is profound. Big moveable buildings is how NASA has been doing it since Apollo. It is also what Boeing’s Delta family of rockets uses at Vandenberg in California. It is also why the Saturn 5 was and the Delta is so expensive to launch.

SpaceX abandoned such complicated structures in designing its Falcon 9, and instead decided to copy the old Soviet method of simple buildings for horizontal assembly and the simple horizontal transport to the launchpad. This appears to save a lot of money while simplifying rocket assembly.

That the Russians are now copying NASA’s more expensive but fancy mobile building approach means that, once again, their government is making decisions not based on efficiency but the prestige their political decisions can give them. From a competitive perspective, this is not going to benefit the Russia space effort, in the slightest.

But their workers will be more comfortable while they assembly those rockets!

2 comments

Scientists narrow the next Mars rover candidate landing sites to 8

9:13 am

Jezero Crater

For the next Mars rover, scheduled to launch in 2020, scientists have now narrowed their candidate landing sites to eight, with Jezero Crater (pictured on the right) the favorite choice.

The top vote getter was Jezero crater, which contains a relic river delta that could have concentrated and preserved organic molecules. “The appeal is twofold,” says Bethany Ehlmann, a planetary scientist at the California Institute of Technology (Caltech) in Pasadena. “Not only is there a delta, but the rocks upstream are varied and diverse.”

The image clearly shows the scientific attraction of Jezero Crater, with an obvious meandering river canyon opening out into an obvious river delta. The crater in the delta will also give them an opportunity to do some dating research, since that crater had to have been put there after the delta was formed.

The choice however illustrates the difference in goals between scientists and future colonists. Scientists are looking for the most interesting locations for understanding the geological history of Mars. Future colonists want to find the best places to establish a home. Jezero Crater, as well as the other eight candidate sites, do not necessarily fit that settlement need. For a colonist it might be better to put a rover down on the flanks of Arsia Mons, one of Mars’ giant craters where scientists have evidence of both water-ice and caves. None of the candidate sites, however, are aimed anywhere close to this volcanic region, because scientifically it is not as interesting.

This is not to say that the candidate sites might not be good settlement sites. It is only to note that the focus of these scientists is research only. Furthermore, it is probably premature anyway to look for settlement sites. We need to know more about Mars itself.

2 comments

Stratolaunch shifts to the small sat market

5:07 pm

The competition heats up: Even as Vulcan Aerospace, the company building the Stratolaunch air-launch system, considers its options for the second stage rocket that it will use, it has decided to shift its focus towards the small satellite market, including cubesats.

In a sense, they are now aiming at the same cubesat/smallsat market that Virgin Galactic wants with its LauncherOne air-launched rocket. Whether they can build a system cheap enough for these small satellites to afford, however, remains the big question. Their shifting focus, like Virgin Galactic’s, does not bode well for them.

Stratolaunch of Huntsville, Alabama, has already gone through two earlier iterations of its launch vehicle. When Stratolaunch unveiled its plans in December 2011, it planned on using a variant of SpaceX’s Falcon 9 rocket. Less than a year later, though, Stratolaunch announced it was ending that agreement because SpaceX wanted to focus on the standard version of its Falcon 9.

Stratolaunch then teamed with Orbital Sciences Corp., now Orbital ATK, to develop a launch vehicle. That rocket, called Thunderbolt, featured two solid-fuel stages provided by ATK and an upper stage powered by RL-10 engines from Aerojet Rocketdyne. Like the earlier SpaceX design, Thunderbolt was designed to launch medium-class payloads.
Chuck BeamesChuck Beames. Credit: Vulcan Aerospace

Stratolaunch, though, has set that design aside as it seeks to launch smaller satellites, where the company sees a burgeoning market.

One wonders if the cost of building Stratolaunch will be more than this smallsat market can bear.

Leave a comment
1 … 387 388 389 390 391 … 502