Tag: spaceflight

Atlas 5 launches Cygnus

11:04 pm

The competition heats up: A ULA Atlas 5 rocket tonight successfully placed an Orbital ATK Cygnus freighter into orbit to resupply ISS.

This was the second time an Atlas 5 put Cygnus into orbit. The next Cygnus flight will mark the return of Orbital’s Antares rocket.

This Cygnus capsule contains probably one of the more interesting engineering experiments flown by NASA in years. When it leaves ISS in about two months they will ignite a fire inside it to study the way fires spread and burn in weightlessness.

One comment

Near disaster for ExoMars

6:22 pm

The Russian jinx for going to Mars might not be over yet: New data suggests that the Briz-M upper stage to the Proton rocket exploded shortly after it has propelled ExoMars on its way to Mars and then separated from it.

There appears to be a cloud of debris near the probe, thought to have been caused when the Briz-M stage was to fire its rockets one last time to take it away from ExoMars as well as prevent it from following it to Mars. Instead, it is thought (though not confirmed) that the stage blew up at that moment.

Though so far ExoMars appears to be functioning properly, but they have not yet activated all of its most sensitive instruments. Only when they turn them on in April will we find out if they were damaged in any way by the Briz-M failure.

5 comments

Fuel for Russia’s nuclear space engine

9:14 am

The competition heats up: According to Russian press sources, the first fuel for that country’s nuclear space engine project has now been delivered to Rosatom, Russia’s nuclear energy corporation.

The article is very unclear whether this space engine is a nuclear power plant similar to those used by NASA’s deep space Voyager, Pioneer, and Cassini probes, or whether it is a real nuclear-powered engine designed to provide thrust. Russia has never launched a probe with the former, so that would be an advancement for them, but it would not be a game-changer in the exploration of the solar system. If the latter, however, it will give them the capability no one else has to travel quickly and more efficiently to other worlds.

Based on a careful rereading of the article, I suspect the former.

2 comments

Vostochny begins practicing launch procedures

8:59 am

The competition heats up: Dress rehearsals have begun for the first Soyuz rocket launch at Russia’s new spaceport Vostochny, scheduled sometime this spring.

They have not announced an official launch date yet.

If all tests go as scheduled, the launch vehicle will be removed from the launch pad on March 25 and returned to its processing facility for the final assembly with its payloads, including Lomonosov, Aist-2D and Kontakt-Nanosputnik satellites, which will be delivered into orbit during the first mission from Vostochny. The State Commission overseeing the launch will be making decision on the date of the first liftoff based on the results of the tests, the readiness of the launch facilities and the completion of safety measures for the launch personnel, Roskosmos said.

Leave a comment

China shuts down its first space station

3:52 pm

Though still in orbit, China has turned off Tiangong-1, its first space station, launched in 2011 and since visited by three manned crews.

The news story, from the state-run Chinese news organization, notes that the module’s orbit will slowly decay and eventually burn up in the atmosphere. It does not say how the Chinese intend to control that re-entry, since Tiangong-1 is likely large enough for some parts of it to survive and hit the ground.

Leave a comment

Getting real close to Comet 67P/C-G

9:47 am

Close-up of Comet 67P/C-G

Cool image time! As Comet 67P/C-G moves away from the sun and cools down, the Rosetta science team has been able to move the spacecraft back in close to the comet. The image on the right was taken on March 5 from only 12.6 miles above the comet’s surface, and has a resolution of 14 inches per pixel.

I have brightened the image and cropped it to show it here. At this scale, if they managed to photograph the location where Philae sits we would see it with no problem at all. As it is, the detail is remarkable. For example, look at the slope below the cliff in the lower right. You can see what look like a very faint series of terraces, suggesting the existence of onion-like layers below the surface.

Go to the link. There is a second high resolution image there that is as amazing.

4 comments

SpaceX sets date for next Dragon launch

8:41 am

The competition heats up: SpaceX has scheduled April 8 for the next Falcon 9 launch, set to carry its first Dragon capsule since the launch failure last year.

Though this is the most important news contained by the article, its focus is instead on the various preparations that SpaceX is doing at its Texas test facility to prepare for this launch as well as the increased launch rate required for the company to catch up on its schedule.

Note that the Dragon launch will also be significant in that it will be carrying Bigelow’s inflatable test module for ISS, built for only $17 million in less than 2 years. NASA, ESA, or JAXA would have required at least half a billion and several years to have accomplished the same.

Leave a comment

Russia finally approves 10-year space plan

9:31 am

The announcement yesterday that Russia is trimming its space budget by 30% was actually part of the final approval of their ten-year space plan, under discussion and planning for the past two years.

Interestingly, the 30% cut was only the last reduction of many in the budget plan since it was first announced. Initially, they hoped to budget 3.4 trillion rubles for their aerospace industry over the next decade. The final budget approved yesterday is for 1.4 trillion. That’s a 59% reduction.

Considering that the reductions have forced them to abandon any plans for building a re-usable rocket, they will be increasingly hard-pressed in the next decade to successfully compete for business in the commercial market. While Russia stands still with its older designs, others will be developing new less costly ways to launch rockets. The business will go elsewhere, and they will actually have even less money to work with.

8 comments

Injected stem cells cure osteoporosis in mice

9:22 am

Scientists have discovered that an injection of stem cells into mice with osteoporosis was able to completely cure them of the bone disease.

Researchers at the University of Toronto and The Ottawa Hospital had previously found a causal effect between mice developing age-related osteoporosis and a deficiency in mesenchymal stem cells (MSCs). One of the promising attributes of MSCs is that, while they can grow into different cells in the body just like other stem cells, they can be transplanted without the need for a match. “We reasoned that if defective MSCs are responsible for osteoporosis, transplantation of healthy MSCs should be able to prevent or treat osteoporosis,” says William Stanford, senior scientist at The Ottawa Hospital and Professor at the University of Ottawa.

To put this reasoning to the test, the scientists injected MSCs into mice with the condition. Six months later, which is one quarter of the life span of the animal, they observed a healthy functional bone in place of the damaged one. “We had hoped for a general increase in bone health,” says John E. Davies, co-author of the study. “But the huge surprise was to find that the exquisite inner ‘coral-like’ architecture of the bone structure of the injected animals – which is severely compromised in osteoporosis – was restored to normal.”

The importance of this discovery for space travel is that it might eventually allow scientists to use it to somehow prevent the loss of bone density during weightlessness.

4 comments

Russians use wooden matches to ignite rocket engines

9:15 am

The March 12th launch abort of a Soyuz rocket occurred because the Russians use the equivalent of a giant wooden match to ignite their Soyuz rocket engines.

Essentially, prior to launch engineers insert large wooden matches into each engine, and these are ignited using an electric spark prior to allowing fuel into the combustion chamber. When mission control sensors all matches are burning, they open the valves and fuel enters the chamber, igniting and incinerating the matches.

This setup is not as simple as a regular match, but it is surprisingly reliable and has worked for six decades on hundreds of rockets. Yet on March 12, during the first attempt to launch the new Russian satellite for Earth observation, one of the “matches” failed to fire after the ignition command was issued. It was enough of a problem for the launch control system, which detected the lack of signal from the failed igniter, to call off the propellant injection into combustion chambers. The launch was aborted just a moment before liftoff, and the fully fueled rocket remained safely on the pad.

To launch the next day, they simply replaced the matches and tried again, quite successfully.

The article makes me wonder how other rockets ignite their engines.

23 comments

NOAA head poo-poos private weather companies

10:58 pm

At a congressional hearing on Wednesday the head of NOAA expressed serious doubts about the ability of private companies to provide worthwhile weather data.

At a hearing of the environment subcommittee of the House Science Committee on NOAA’s fiscal year 2017 budget request, NOAA Administrator Kathryn Sullivan said it was still too soon to determine if commercial sources of weather data, most notably GPS radio occultation systems, could augment or replace existing data sources. “In the weather domain, we believe it is a promising but still quite nascent prospect to actually have data flows from private sector satellites,” Sullivan said. “There have been a number of claims, there’s some hardware in orbit from at least one company that I’m aware of, but really nothing proven to the level that we require for ingesting something into the National Weather Service.”

This so much reminds me of past NASA administrators who repeatedly told us that private companies really couldn’t do the job of supplying ISS or launching humans into space, and that we really needed to leave that job to the government, which really knew better.

As it turns out, those past NASA administrators were wrong. Not only has private space done a very effective job at supplying ISS, they made it happen fast for relatively little money. And they are about to do the same in launching humans into space as well. NASA meanwhile has been twiddling its thumbs for decades in its efforts to replace the space shuttle while spending ungodly amounts of money and accomplishing little with it.

I have no doubt the same will be true with the weather. Allow private companies to compete for profits in providing the world with good weather data, and they will quickly do a far better job than NOAA. And the data will likely not be tampered with for political ends by global warming advocates in the government!

6 comments

Roscosmos budget slashed 30%

10:46 pm

How’s that consolidation working out for ya? The Russian government announced today that it will have to cut the budget for its space program by 30 percent over the next ten years due to the country’s deepening economic problems.

In line with its reduced funding, the space agency has agreed to delay a manned flight to the moon by five years – to 2035 from 2030 – and scrap plans to develop a reusable rocket, a potentially valuable cost-saving technology. A Roscosmos spokesman previously said the agency would reassess its plans after 2025.

Essentially, the consolidation of Russia’s entire aerospace industry into a single corporation run by the Russian government has produced a very expensive government program unable to accomplish much of anything for a budget of 1.4 trillion rubles ($20.4 billion) from 2016 to 2025. Sounds kind of like NASA, doesn’t it?

Give me competition over a centralized program any day, and see great things happen. Go with a centralized government program, and watch as the life ebbs from the creativity of everyone.

Leave a comment

Pluto 8 months after fly-by

12:04 pm

The New Horizons science team today published five papers summarizing what they have so far learned from the data obtained during last year’s July 14 fly-by and since downloaded.

Two of the many discoveries are to me the most interesting: The first illustrates Pluto’s strange and very active geology:

Age-dating of Pluto’s surface through crater counts has revealed that Pluto has been geologically active throughout the past 4 billion years. Further, the surface of Pluto’s informally named Sputnik Planum, a massive ice plain larger than Texas, is devoid of any detectable craters and estimated to be geologically young – no more than 10 million years old.

Moreover, the materials that cause Pluto to be geologically active are much more complicated than anything on Earth:

Scientists studying Pluto’s composition say the diversity of the planet’s landscape stems from eons of interaction between highly volatile and mobile methane, nitrogen and carbon monoxide ices with inert and sturdy water ice. “We see variations in the distribution of Pluto’s volatile ices that point to fascinating cycles of evaporation and condensation,” said Will Grundy, from Lowell Observatory in Flagstaff, Arizona, and lead author of the composition paper. “These cycles are a lot richer than on Earth, where there’s really only one material that condenses and evaporates – water. On Pluto, there are least three materials, and while they interact in ways we don’t yet fully understand, we definitely see their effects all across Pluto’s surface.”

The second discovery that fascinates me has to do with the formation of Pluto and all its moons:

The high albedos (reflectiveness) of Pluto’s small satellites are entirely different from the much lower albedos of the small bodies in the general Kuiper Belt population (which range from about 5 to 20 percent). This difference lends further support to the idea that these satellites were not captured from the general Kuiper Belt population, but instead formed by agglomeration in a disk of material produced in the aftermath of the giant collision that created the entire Pluto satellite system.

In other words, Pluto and its moons are not a collection of different Kuiper Belt objects brought together over time. Instead, they formed together.

Leave a comment

Virgin Galactic awards contract

8:58 am

The competition heats up: Virgin Galactic has awarded a contract to a Waco company to strengthen the wings of a 747 it intends to use the first stage for LauncherOne.

L-3’s work will make the left wing stout enough to support a rocket that would launch in flight from beneath the wing. This rocket would propel satellites into space for commercial and government customers. Company spokesman Lance Martin said that for confidentiality reasons he could not disclose the value of the contract or the length of the plane’s stay in Waco. He said performing work for Virgin Galactic and Branson should enhance L-3’s image, saying, “the customer speaks for itself.”

I suppose I should be excited by this, as it suggests that LauncherOne is moving forward. Considering Virgin Galactic’s history, however, I find myself sadly disinterested. I won’t get excited by this company again until they actually begin flying something.

Leave a comment

ULA official resigns

8:48 am

In an update to the story last night about the head of ULA rejecting comments made by one of his chief engineers, that engineer has now resigned.

[Brett Tobey, formerly ULA vice president of engineering] resigned his position, effective immediately, ULA chief executive Tory Bruno said in a statement. ULA is a joint venture of Lockheed Martin Corp and Boeing. “The views, positions and inaccurate statements Mr. Tobey presented at his recent speaking engagement were not aligned with the direction of the company, my views, nor the views I expect from ULA leaders,” Bruno said in the statement.

In other words, we can’t have too much honesty here. There are games that Congress and ULA play with each other to justify the billions in subsidies the government gives ULA, and to note these games in a straightforward way is to note that the emperor has no clothes. We can’t have that.

I hope Tobey finds a job at SpaceX.

One comment

Changes in Ceres’s white spots

3:56 pm

The uncertainty of science: Ground-based observations of Ceres now suggest that the white spots imaged by Dawn undergo subtle unexpected variations

As Ceres rotates every 9 hours, HARPS is so sensitive that it can detect the very slight Doppler shift in spectrum frequency as the bright spots rotate toward and away Earth, but during observations for 2 nights in July and August 2015, more changes not related to Ceres’ spin were detected. “The result was a surprise,” said co-author Antonino Lanza, also from the INAF–Catania Astrophysical Observatory. “We did find the expected changes to the spectrum from the rotation of Ceres, but with considerable other variations from night to night.”

And it appears that these changes are consistent with some kind of volatile (ice) being exposed to sunlight and venting vapor into space, causing an increase in reflectivity. It seems that when Occator experiences solar heating, plumes are produced and then evaporate, creating a complex spectroscopic signal that evolves during that hemisphere’s daytime. This finding appears to be consistent with earlier observations made by Dawn showing a mysterious haze over Occator.

The problem with this theory is that it assumes the white spots are comprised of water ice. However, data from Dawn has instead suggested that the white spots are not water but salt deposits.

It could be that the white spots are salt left behind when water vented from inside Ceres evaporates away, but so far the data from Dawn has not found any evidence of water at the spots. If it was venting there, Dawn should have seen it.

Leave a comment

Starting a fire in space, on purpose

11:47 am

Engineers plan to intentionally start fires in every Cygnus capsule heading for ISS this year, beginning with the next on Tuesday, but they will wait each time until the freighter has been docked, unloaded, and has left the station.

“The specific goals of the SAFFIRE experiments are to investigate the spread of a large-scale fire in microgravity, essentially trying to answer the questions of how large does a fire get and how rapidly does it spread, or how long does it take to get to the point of being really hazardous to the crew.”

NASA intends to run SAFFIRE experiments on three consecutive Cygnus spacecraft launching through the end of this year. The SAFFIRE 1 and 3 tests will use single samples 15.7 inches wide by 37 inches tall to watch the development and spread of a large-scale low-gravity fire. Scientists want to know if there is a limiting flame size and to quantify the size and growth rate of flames over large surfaces. “SAFFIRE is a box with a wind tunnel in it, a flow duct, that contains the sample that will be burned,” said Ruff. With two cameras poised to capture the fire, a hot wire along the upstream edge of the fiberglass-cotton fabric sample will trigger the burn that should last at least 15 or 20 minutes.

This is very clever, using the capsule as a fire test facility when it is on its way back to Earth to burn up in the atmosphere.

One comment

Curiosity reaches Naukluft Plateau

9:24 am

The view from Naukluft

Apropos to my post yesterday on Curiosity’s journey on Mars, the rover this week reached the flat area the science team has dubbed Naukluff Plateau.

The Sol 1281 drive completed as planned, crossing the Murray/Stimson contact at the edge of the Naukluft plateau. Now that we have a better view of the plateau, we are ready to start driving across it. But first, ChemCam and Mastcam will observe targets “Orupembe” and “Witvlei” on the bedrock in front of the rover. Mastcam will also take pictures of the rocks in front of the rover and targets “Natab East” and “Natab West” on either side of the vehicle before the Sol 1282 drive. After the drive, in addition to the usual post-drive imaging, the Left Mastcam will acquire a full 360-degree panorama, as the view from the new location (near the left edge of the image above) is expected to be good. We are looking forward to seeing the new data!

The second link above leads to the rover’s daily update site. It was here that the science team reported an issue with the rover’s scoop back in early February. Since then, however, they have never revealed if the problem was solved. Nor have they used the scoop in any way since then. I now wonder if it is no longer operational and am considering pursuing that question a bit to find out.

2 comments

China plans first commercial rocket company

9:13 am

The competition heats up: A Chinese company has announced plans to start a new commercial rocket company to compete for the burgeoning space launch market.

China Sanjiang Space Group Co. is preparing to enter the commercial-rocket business with a launch slated for 2017, Xinhua reported Tuesday, citing the company’s chief engineer Hu Shengyun. Some Internet companies have expressed interest in collaborating on commercial launches, Hu said.

The Kuaizhou-11, translated as “fast vessel,” rocket is being developed by the Fourth Academy of China Aerospace Science & Industry Corp., a major missile supplier to the People’s Liberation Army, according to China Daily.

There is not much information at the link. The rocket was first launched in 2013, but not much has been revealed about it since.

3 comments

Akatsuki to finally begin studying Venus

8:46 am

After a five year delay because its initial attempt to enter Venus orbit failed, the Japanese probe Akatsuki is finally about to begin science operations.

Its present orbit is less than ideal, passing 440,000km from the planet at its farthest point. That is roughly five times greater than initially planned and means the orbit time is now nine days. The change in orbit has affected the probe’s observation plan. Of its seven planned missions, Akatsuki will be able to complete only one: taking serial images of clouds. Unfortunately, the probe’s five cameras, each capturing images in different wavelengths, including infrared and ultraviolet, will not be able to provide the same resolution at this greater distance. Observing volcanic eruptions on the Venusian surface may also be difficult.

There is an upside to the situation, however. Takeshi Imamura, an associate professor at JAXA’s Institute of Space and Astronautical Science, says the longer orbital period means the probe will be able to collect longer continuous stretches of data.

Considering everything, it is magnificent that Akatsuki will be able to do any science at Venus at all.

Leave a comment

Pinpointing Curiosity’s location in Gale Crater

3:07 pm

Curiosity's traverse

The Curiosity science team recently released a new Mars Reconnaissance Orbiter image, showing Curiosity’s overall route since its landing on Mars in August 2012. I have posted a reduced version on the right.

Similarly, on the Curiosity website you can view this more detailed map of its traverse route. This map is updated regularly as Curiosity continues its climb up Mount Sharp.

Neither of these maps is to me very satisfying or useful, however. Neither shows the overall location of Curiosity within Gale Crater. Nor do they give one a sense of how far it is has come on its climb up the mountain. In fact, it is very unclear how close the rover actually is to the peak from either image.

Thus, I decided to do a little research to get some better context of Curiosity’s position and its overall journey.
» Read more

13 comments

Iran to launch satellite?

12:26 pm

Does this make you feel safer? Iran is preparing to launch a new ballistic missile capable of placing satellites in orbit.

The Simorgh rocket is a new development not seen previously. Its launch would also be a violation of a UN resolution forbidding Iran to do such research, but who cares about that? It wouldn’t be violation of the great deal Obama negotiated for us with Iran, a deal that they themselves never endorsed.

9 comments

ExoMars blasts off

8:46 am

The European-Russian Mars orbiter/lander ExoMars was successfully launched on a Proton rocket this morning from Baikonur.

It will still take most of today for the rocket’s Briz-M upper stage to complete several additional engine burns to send the spacecraft on its path to Mars, but the most difficult part of the launch has now passed.

The article does a nice job of summing up Russia’s most recent track record in trying to send spacecraft to Mars, thus illustrating the significance of today’s success:

For Russian scientists, the launch marks the resumption of a cooperative effort with Europe to explore the Solar System, after the failure of the Phobos-Grunt mission in 2011.The launch of the ExoMars-2016 spacecraft will be Proton’s first “interplanetary” assignment in almost two decades. During its previous attempt in November 1996, Proton’s upper stage failed, sending the precious Mars-96 spacecraft to a fiery desmise in the Earth’s atmosphere and effectively stalling Russia’s planetary exploration program for a generation.

Further in the past, during the Soviet era, the Russians tried numerous times to either orbit or land on Mars. Every mission failed. If this mission successfully reaches Mars and lands it will mark the first time the Russians played a major role in a mission to Mars that actually reached its goal and worked.

One comment

Blue Origin engine testing update

9:33 am

The competition heats up: Jeff Bezos has released an update on Blue Origin’s test program of its BE-4 rocket engine, being built as a possible replacement for the Russian engines in the Atlas 5.

Bezos’s final comment kind of explains why Boeing has favored them over Aerojet Rocketdyne for this engine:

One of the many benefits of a privately funded engine development is that we can make and implement decisions quickly. Building these two new test cells is a $10 million commitment, and we as a team made the decision to move forward in 10 minutes. Less than three weeks later we were pouring the needed three-foot thick foundations. Private funding and rapid decision making are two of the reasons why the BE-4 is the fastest path to eliminate U.S. dependence on the Russian-made RD-180.

I imagine however a lot of Congressmen are upset by this. If they do it too cheaply or too quickly there will be far less opportunity to spend pork in their districts!

7 comments
1 … 348 349 350 351 352 … 476