Dragon returns home
After a month docked to ISS, SpaceX’s Dragon capsule has successfully splashed down in the Pacific.
Tag: ISS
Avoiding the period in space
New research has outlined the techniques available to female astronauts to prevent menstruation in space.
Rather than researching the consequences of women having a period in space, the researchers are recommending that women avoid them completely, something that appears to have been the policy of NASA on ISS. This is a big mistake. The whole point of having a space station is to find out the consequences to the human body imposed by weightlessness. Future space explorers will need to reproduce. We need to know now if that will be possible.
Liver damage from weightlessness?
The uncertainty of science: Mice flown for almost two weeks on the last space shuttle mission in 2011 have shown evidence of the early symptoms of liver disease.
The mice spent time orbiting the Earth on the final space shuttle flight in 2011. Once they returned home, teams of scientists were allowed to share and study their internal organs.
Jonscher’s team found that spaceflight resulted in increased fat storage in the liver, comparing pair-fed mice on Earth to those on the shuttle. This was accompanied by a loss of retinol, an animal form of Vitamin A, and changes to levels of genes responsible for breaking down fats. As a result, mice showed signs of nonalcoholic fatty liver disease (NAFLD) and potential early indicators for the beginnings of fibrosis, which can be one of the more progressive consequences of NAFLD. “It generally takes a long time, months to years, to induce fibrosis in mice, even when eating an unhealthy diet,” Jonscher said. “If a mouse is showing nascent signs of fibrosis without a change in diet after 13 ½ days, what is happening to the humans?”
This result doesn’t prove that weightlessness causes liver damage. It only suggests that more research is needed, though the data from six month to year long missions suggest that the liver harm to humans is either non-existent or temporary.
Privately-built inflatable module installed on ISS
The competition heats up: Bigelow Aerospace’s BEAM inflatable module, built in only three years for a mere $17 million, was installed on ISS this past weekend.
BEAM will allow Bigelow and NASA to demonstrate the capabilities of the inflatable habitat on ISS. It is expected to perform for at least two years of testing on the Station, providing a key shake out of the technology that is likely to play a major role in human deep space exploration. “(BEAM) will be a great way to test out the thermal characteristics of this new type of module, along with its radiation protection,” added Kopra. “It’s going to be a neat thing.”
Following its test period, the SSRMS will remove the module from the Station before releasing it Nadir (Earth-facing). The module will eventually re-enter around a year later.
Dragon arrives at ISS
The competition heats up: SpaceX’s Dragon capsule has been berthed with ISS, bringing with it Bigelow’s privately built inflatable test module.
This berthing also makes it the first time the two American cargo freighters, Dragon and Cygnus, are docked at ISS at the same time.
In a related non-news story, the head of Russia’s space agency Roscosmos, which now controls that country’s entire aerospace industry, claimed in a television interview today that Russia is the world’s “undisputed leader … in launch vehicles and launch services,” noting that they launch about 40% of all launches worldwide.
That’s nice for him to say, but just because you say it doesn’t make it so. I expect that 40% number (which includes all Russian government launches and is thus inflated from their actual market share) to shrink considerably in the coming years, as the Russian space industry has shown a complete inability to innovate in the last twenty years. With the consolidation of that industry into a single corporation all run by the government, I do not expect that inability to go away anytime soon.
ISS astronaut to steer rover on Earth
On to Mars! The British have enlisted the skills of astronaut Tim Peake on ISS to do some test driving of a prototype rover planned for launch on the second ExoMars mission in 2018.
Major Peake will operate Bruno remotely from the International Space Station. His mission will be to drive the robot into a make-shift cave, which will replicate the conditions on Mars, where he will seek out targets marked with an “X”. “There are caves on Mars and craters that cast long shadows,” said Airbus Defence & Space communications director Jeremy Close. “To explore those areas, it’s more efficient to have a human in the loop.”
I must be a bit of a skeptical grump here: Looking at this story I found it packed with more public relations junk than you can imagine. The whole test facility shown is absurd. All show, no reality. Also, their claims about the rover’s route-finding superiority don’t sound right to me.
And the rover itself? This is the prototype of what they plan to launch in 2018? You have got to be kidding? We are less than two years from launch. While I grant this is probably only a model for testing the robot’s route-finding capability, using something held together by packing tape at this late date hardly fills me with confidence about the final product.
Hat tip John Batchelor for sending me the link.
Atlas 5 launches Cygnus
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.
New ISS crew successfully launched
A Soyuz rocket successfully launched a new crew of three astronauts today to ISS.
The American, Jeff Williams, will set a new record for the most total days in space by an American, breaking the record just set by Scott Kelly during his 340 day mission.
Starting a fire in space, on purpose
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.
March 3, 2016 Zimmerman/Batchelor podcast
Embed below the fold. Entitled “The Wear and Tear of Zero Gravity” by John Batchelor.
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Astronauts return after 340 days on ISS
After 340 days in space astronauts Scott Kelly and Mikhail Kornienko safely returned to Earth early today.
Now the real research begins. Because Kelly has an identical twin, Mark Kelly, who is also a former astronaut, researchers will be able to gain a great deal of knowledge comparing the differences in how their bodies changed over the nearly full year, with one in weightlessness and the other on Earth.
However, what I want is longer missions, two or three years long, thus far exceeding what it would take to travel to and from Mars. Only then can we find out if humans will be able to make the journey safely.
Wrapping up the longest space mission by an American
My how time flies: Astronaut Scott Kelly’s almost year-in-space is scheduled to end on March 1st.
Kelly and cosmonaut Mikhail Kornienko will come back to Earth Tuesday (March 1), wrapping up an unprecedented 340-day stay on the orbiting lab. (Crewmembers typically live and work aboard the station for 5 to 6 months at a time.)
The article is wrong when it calls this mission “unprecedented.” The Russians have flown four astronauts in space for more than a year, with one spending 14.5 months in orbit. Though Kelly’s experience will provide valuable data for future long term missions to the planets, it remains disappointing to me that NASA didn’t have the courage to push this beyond the previous Russian record.
Mold forces Cygnus launch delay
The discovery of mold in two clothing bags being packed for a Cygnus freighter launch to ISS has caused NASA to delay the launch by at least two weeks.
The source of the mold, a common fungal growth in humid climates like Florida’s, is under investigation by NASA and Lockheed Martin, which prepares NASA cargo for launch aboard two commercial carriers, Orbital ATK and privately owned SpaceX. An Orbital Cygnus cargo ship was more than halfway packed for the launch, scheduled for March 10, when the mold was found during routine inspections and microbial sampling, NASA spokesman Daniel Huot said.
The mold did not present any serious health threat should it have arrived at ISS, but it is definitely preferred to not fly it there if possible.
Private company proposes commercial airlock for ISS
The competion heats up: The private company NanoRacks has proposed building a large airlock for ISS which could be used to launch private cubesates while also allowing NASA to eliminate spacewalks by bringing faulty equipment inside for repairs.
For commercial opportunities, NanoRacks has a small satellite launcher, and it is also designing a “haybale” system to launch as many as 192 cubesats at a time. After the airlock is configured, it would be depressurized and sealed. Then a station robotic arm could grab it, move it away from the vehicle, and deploy its payloads.
NASA is also interested in the opportunity to potentially fix large, external components of the space station. Before the space shuttle’s retirement, NASA used the sizable delivery vehicle to stash dozens of replacement pumps, storage tanks, controller boxes, batteries, and other equipment on the station, known as ORUs. When one of these components broke, astronauts would conduct a spacewalk to install a replacement unit.
However sometimes the problem with a broken unit is relatively minor, such as a problematic circuit card. With a larger airlock, damaged components could be brought inside the station, assessed, and possibly fixed, saving NASA the expense of building and delivering a new unit to the station—or losing a valuable spare. Finally, the space agency could use the airlock to dispose of trash that accumulates on station and can be difficult to get rid of.
It is exactly this kind of technology, spurred by the lure of profits, that interplanetary spaceships need if they are going to be maintainable far from home.
Europe kicks in money for Dream Chaser
The competition heats up: NASA’s decision to award Sierra Nevada a cargo contract has triggered a $36 million investment by the European Space Agency (ESA) to build a new docking unit for Dream Chaser at ISS.
Sierra Nevada Corp.’s win of a NASA contract to ferry cargo to the International Space Station will trigger a $36 million investment by the 22-nation European Space Agency following a cooperation agreement to be signed in the coming weeks, ESA said. Once the agreement is signed, ESA will begin work building the first flight model of the International Berthing and Docking Mechanism (IBDM), which Sierra Nevada’s Dream Chaser Cargo System will use to attach itself to the space station.
ESA said it would spend 33 million euros ($36 million) to complete the design of the IBDM and build a flight model for Dream Chaser’s first cargo run. Future IBDMs will be financed by Sierra Nevada, ESA said.
Video of Dragon/SuperDraco engine test
The competition heats up: SpaceX today released a video of a five second test they did in November of the SuperDraco thrusters attached to their Dragon capsule.
I have embedded the video below the fold. This test, which took place on a test stand with the capsule hanging from a crane cable, was part of their work to develop a launch abort capability for the manned version of Dragon. The thrusters will also be used eventually to make possible vertical land landings of the capsule.
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Flowers bloom on ISS
NASA astronauts have successfully gotten their zinnias to bloom for the first time.
As the article correctly notes, these are not the first flowers to bloom in space. Nonetheless, they represent an important achievement in making it possible for humans to live and survive in space.
Spacewalk cut short due to spacesuit water leak
Today’s spacewalk at ISS to repair a failed voltage regulator of the station’s power system has been cut short because a water bubble had appeared inside one of the astronaut’s spacesuit.
The astronauts are presently in the airlock about to remove their spacesuits, so it appears they are not in danger. However, this problem is the return of the earlier water leaks inside NASA’s spacesuits, something that the agency had thought it had solved last year. If it has returned, this is of serious concern, since it suggests that they have not yet pinpointed the chronic cause of the problem.
It should be noted that the astronauts had successfully replaced the voltage regulator prior to the premature conclusion of their spacewalk. They had had other less critical tasks on their schedule which they had to forego because of the leak.
SpaceX, Orbital ATK, and Sierra Nevada awarded contracts to ISS
The competition heats up: NASA has decided to award contracts to all three competitors, Orbital ATK, SpaceX, and Sierra Nevada, in the second round of cargo contracts to ISS.
Or as Yogi Berra once said, “When you come to a fork, take it.”
The main winners appear to be Orbital and SpaceX, with Sierra Nevada coming in later. Details at this moment remain vague, so stay tuned.
Lay-offs at Bigelow
The competition cools down? Bigelow Aerospace has laid off somewhere between 30 and 50 employees out of approximately 150 total employees.
In a Jan. 6 statement provided to SpaceNews, Bigelow Aerospace President Robert Bigelow said that the company determined that many areas of the company were “overstaffed” and decided to lay off employees to reduce the company’s expenses. “In December of 2015, we analyzed the amount of staff that we employed throughout all of our departments at Bigelow Aerospace, and discovered that numerous departments were overstaffed,” Bigelow said in the statement. “Regrettably, we had to make the choice that, beginning with the New Year, we need to follow standard business protocols, which sensibly requires an attempt to achieve balance in how much staff is necessary.”
The lay-offs do not necessarily indicate the company is failing, only that it is adjusting its payroll to the specific conditions of the moment. They have completed construction of their inflatable module for ISS and now only await its launch. Time to save money until they win their next contract.