Tag: ISS

Using the X-37B as a space ambulance?

10:16 am

Researchers have proposed using the Air Force’s X-37B as an ambulance in space.

Halberg said that an effective astronaut taxi should, among other things, be able to stay at the ISS for two years or more at a stretch; be capable of getting people back to Earth rapidly, within three hours or so; impose minimal G-loads on occupants; have the ability to land close to a hospital; and allow patients to lie in a supine position. These requirements all point to a space plane rather than a capsule, Halberg said — meaning SpaceX’s Dragon capsule and Boeing’s CST-100 capsule, which are scheduled to start flying NASA astronauts to and from the ISS within the next year or two, wouldn’t make the grade as ambulances.

Another private crew-carrying vehicle that’s currently in development, Sierra Nevada Corp.’s Dream Chaser space plane, is an intriguing option that bears further investigation, Robinson and Halberg said. But their initial concept study focused on the robotic X-37B, chiefly because the 29-foot-long (8.8 meters) military space plane has already racked up millions of miles in orbit, while Dream Chaser has yet to launch.

Makes sense, though once Dream Chaser is flying it will have the potential to provide the same service with far greater capabilities.

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Spacesuit problem from January declared solved

10:21 am

NASA has completed its investigation into the spacesuit water leak that forced a January spacewalk to end two hours early by declaring the problem is not serious and needs no significant re-engineering.

However, thanks to the suit being returned to Earth on the Dragon, the problem with [astronaut Tim] Kopra’s suit was deemed to be more an unfortunate coincidence, as opposed to a wider issue with the EMUs [spacesuits] on Station. Mr. Shireman told the ASAP [Aerospace Safety Advisory Panel] that the conclusion reached was that the incident was not an example of the same failure as in the previous water-in-the-helmet instance. “In this case, the likely cause was a combination of both environmental and operational factors that blocked outlet port slurper holes. The finding was that the amount of water was considerably smaller than before, and the conclusion reached was that this was a non-hazardous occurrence, even if it occurs in the future.”

As a result, the NASA team recommended a “go” for nominal and planned EVAs. Two EVAs, with special contingency allowances, were conducted since EVA-35, both without issue.

The whole article reads like a government press release trying to paper over a problem. “Move along, nothing to see here!” While they might have located and solved the problem, this tone makes me very suspicious. They would be smarter to just tell us the story straight, rather acting like NASA cheerleaders

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Russia to test components of nuclear engine on ISS

10:09 am

The competition heats up: Roscosmos is planning this week to award a research grant for test flying components on ISS of a nuclear rocket engine Russia has been developing since 2009.

The small amount of money, about $4 million, likely means this will not be a full scale model. Moreover, that this research grant is only being awarded now, seven years after the program began, suggests to me that work is going very slowly. While the delays might be technical, I suspect it is more likely because of the underlying corruption that percolates throughout the government-run Russian system. The project is being slow-walked, so that the funds will be available to the one Russian company that is doing the work for as long as possible.

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The effect of weightlessness on the spine

9:04 am

New observations of astronauts before and after four to seven month long missions to ISS has found the back pain many astronauts experience appears to be caused by significant muscle atrophy.

The MRI scans indicated significant atrophy of the paraspinal lean muscle mass —which plays a critical role in spinal support and movement—during the astronauts’ time in space. The lean muscle, or “functional,” cross-sectional area of the lumbar paraspinal muscles decreased by an average of 19 percent from preflight to immediate postflight scans. A month or two later, only about two-thirds of the reduction had recovered. There was an even more dramatic reduction in the functional cross-sectional area of the paraspinal muscles relative to total paraspinal cross-sectional area. The ratio of lean muscle decreased from 86 percent preflight to 72 percent immediately postflight. At follow-up, the ratio recovered to 81 percent, but was still less than the preflight value.

In contrast, there was no consistent change in the height of the spinal intervertebral discs. Dr. Chang and coauthors write, “These measurements run counter to previous hypotheses about the effects of microgravity on disc swelling.” Further studies will be needed to clarify the effects on disc height, and whether they contribute to the increase in body height during space missions, and to the increased risk of herniated disc disease.

These results are very encouraging, because they indicate that the back problems seen are mostly attributable to weakened muscles, not actual spinal damage, and can therefore be more easily mitigated by new exercises while in orbit.

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Antares successfully launches Cygnus

11:26 pm

After two years of redesign, Orbital ATK’s Antares rocket tonight successfully put a Cygnus cargo capsule into orbit.

Considering that every single one of the vehicles that fly to ISS (Soyuz, Dragon/Falcon 9, Cygnus/Antares, HTV) has been experiencing some issue that has delayed each of their launches, this success tonight must be a relief to managers and engineers in both Russia and the U.S.

Next comes a manned Soyuz launch on Wednesday.

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Used Dragon to fly in 2017

6:32 pm

The competition heats up: SpaceX has confirmed that they will reuse a Dragon capsule to bring cargo to ISS in the spring of 2017.

This plan had already been revealed earlier. The news here is simply that NASA and SpaceX have finalized the decision and picked the actual schedule cargo mission that will use a Dragon capsule. What is more significant is this:

SpaceX plans to reuse Dragon spacecraft through the remainder of its current CRS contract, which runs through SpX-20. [Benjamin Reed, SpaceX director of commercial crew mission management] did not discuss how many Dragon spacecraft are available to be reused, or how many times SpaceX believes a Dragon capsule can be flown.

If successful, Reed said it would allow SpaceX to end production of the cargo Dragon spacecraft. “We’ll be reflying Dragons going forward, and be able to close down the Dragon 1 line and move all the way into Dragon 2,” he said, referring to the next-generation version of the Dragon being developed for commercial crew missions.

In other words, their goal is to transition very quickly from disposable capsules to a fleet of capsules that they fly over and over again.

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NASA to offer port on ISS for private modules

3:58 pm

The competition heats up: NASA to offer port on ISS for private modules.

Several companies have previously expressed an interest in adding a module to the ISS for commercial or NASA use. In April, Bigelow Aerospace said it had made an unsolicited proposal to NASA to add one of its B330 modules under development to the ISS. In August, the company received an award from NASA’s Next Space Technologies for Exploration Partnerships (NextSTEP) to study that concept in more detail.

Axiom Space, a company led by former NASA station program manager Mike Suffredini, announced in June plans to develop a commercial module that could be added to the station as a precursor to a standalone commercial space station. Suffredini said in July that his company planned to respond to the NASA RFI.

Another venture that received a NASA NextSTEP award in August was a consortium called Ixion, which includes NanoRacks, Space Systems Loral and United Launch Alliance. Ixion will study converting a Centaur upper stage into a commercial ISS module.

This confirms my belief that ISS will not be retired in 2024, but will slowly transition to private hands and will be steadily replaced by new private modules as old ones wear out.

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Redesigned Antares launch scheduled for Oct 13

6:45 pm

NASA and Orbital ATK have now set October 13 as the date for the first Antares launch in two years.

Though ISS is not short of supplies, this quote underlines the difficulty of the particular situation now.

While the space station has plenty of food, water, experiments and other provisions, NASA officials are eager for the Antares rocket to resume flights as all of the research outpost’s other servicing vehicles are facing delays.

SpaceX’s Falcon 9 rocket, which launches the company’s Dragon cargo craft, is grounded after a launch pad explosion Sept. 1, and Dragon resupply missions to the space station may not start up again until early next year.

The Japanese HTV cargo freighter was supposed to blast off Sept. 30 with several tons of supplies, including new lithium-ion batteries for the space station’s electrical system. But that launch has been delayed until at least December after Japanese engineers discovered a leak during an air tightness test in August.

And a Soyuz crew capsule that was supposed to launch Sept. 23 with three new space station residents will not lift off until at least Oct. 19 after Russian workers discovered a technical problem on the vehicle. The Soyuz delay will likely push back the launch of Russia’s next unpiloted Progress cargo freighter from Oct. 20 until late November or early December.

Even with numerous redundent methods for hauling cargo to ISS, it is still possible for them all to have problems all at once.

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Airbus signs first customer for its ISS external platform

7:35 pm

The competition heats up: Airbus has signed its first commercial customer for an external platform the company will be installing on ISS by the end of 2018.

Neumann Space is an Australian company developing a solar-electric thruster that uses metallic fuels rather than a gas like xenon. The company believes that the thruster will have a higher performance versus conventional electric thrusters and be able to use a wide range of metals as fuels. The company will install an experimental payload on Bartolomeo, a platform that Airbus plans to mount on the exterior of the Columbus module for experiments that require access to the space environment. Paddy Neumann, chief scientist and founder of Neumann Space, said the power requirements for the thruster made flying it on a cubesat or other small satellite impractical. “When we heard about the Bartolomeo platform, we leapt at the chance,” he said in a ceremony at Airbus’ booth at the IAC exhibit hall where the companies signed the agreement.

…Airbus announced the Bartolomeo platform in June as part of what the company called an “end-to-end service” to provide efficient commercial access to the ISS. The company hopes to have the platform installed on the Columbus module by the end of 2018, but officials at the conference said they were still working out launch arrangements and were in discussions with NASA for the spacewalk that will be needed to install the platform outside Columbus.

What is happening here with Airbus and ESA is the same thing that is happening at NASA: a transition from ownership by government to ownership by competing private companies. The positive ramifications of this transition cannot be measured, and have an almost limitless potential for accelerating the exploration of space.

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Office politics delays Russian ISS module

8:33 am

It appears that the reason work has stalled once again on Russia’s long delayed next module for ISS, the Multipurpose Laboratory Module (MLM), is literally because of office politics between government officials.

According to industry sources, the management at the military certification authority apparently ran into worsening relations with the leadership of the space industry.

In other words, there was some spat between the military guy and the space guy, and in revenge the military guy used his authority to stop all work.

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More delays for Russia’s next ISS module

10:01 am

Work has stalled again on Russia’s Multipurpose Laboratory Module (MLM), threatening its presently scheduled launch to ISS by the end of 2017.

According to industry sources, most of replacement components for the MLM’s faulty propulsion system had already been manufactured, except for the pipelines, which would have to be bent based on their particular situation on the module. Still, military quality control officers, who now certify all space industry manufacturing operations, refused to give the green light for the final assembly of the propulsion system for the MLM.

Work on MLM began in 2008, and has been delayed repeatedly in the past eight years.

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Russian engineers locate short circuit problem on Soyuz

6:43 pm

Russian engineers have now located the short circuit that scrubbed this week’s manned Soyuz launch to ISS.

The official added that there would be no need dismantling the space carrier to fix the detected problem “as we will replace certain parts and then conduct the required tests before the launch.” Solntsev also said that the required spare parts to fix the malfunction and specialists to carry out the repair works were already present at the Baikonur space center in Kazakhstan, where the spacecraft was scheduled to take off.

Though the repair will be quick to fix, they are still sticking with the November 1st launch date, probably because any earlier slot is now taken by Orbital ATK’s Antares/Cygnus launch.

Update: The wording of a new report today, one day later than the report above, describing the problem as “a burnt cable”, is intriguing. A short circuit implies that they sensed some of the circuitry was not reading correctly and that some wiring had to be inspected and either rerouted or given more insulation. A “burnt cable” however suggests the short circuit was far worse and almost turned into a fire.

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Orbital ATK aims for October 9-13 Antares launch

5:35 pm

Orbital ATK and NASA have now scheduled the first Antares/Cygnus launch since the rocket’s failure in October 2014 for no earlier than October 9.

Orbital ATK is targeting Oct. 9-13 for the launch of the company’s upgraded Antares 230 rocket. Liftoff will occur from the Mid-Atlantic Regional Spaceport to send the OA-5 Cygnus spacecraft, called S.S. Alan G. Poindexter, to the International Space Station (ISS). According to a news release from the company, a more specific date and time will be selected upon completion of final operational milestones and technical reviews. Launch times on these dates range from 10:47 p.m. EDT Oct. 9 to 9:30 p.m. EDT Oct. 13 (2:47 GMT Oct. 10 to 1:30 GMT Oct. 14).

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Manned Soyuz launch delayed until November

8:27 am

Roscosmos today confirmed that the short circuit discovered during prelaunch tests will delay the launch of a manned Soyuz to ISS until November.

Though they still have not described the problem in any detail, this article gives some insight:

According to industry sources, the delay was caused by a short circuit, which took place during roll-on of the payload fairing, which protects the spacecraft during its ascent through the atmosphere. The problem was not detected until the vehicle had been rotated back to a vertical position and was being prepared for the second fit check at Site 254 in Baikonur. The situation was complicated by the fact that engineers could not immediately identify the location of the short circuit in the fully assembled spacecraft. Preliminary estimates indicated that such an issue inside the descent module, SA, could require several weeks to fix, however if the problem was in the instrument module, PAO, it could take several months to resolve.

In worst case scenario, mission officials might decide to replace the Soyuz vehicle No. 732, which was affected by the problem, with Vehicle No. 733 originally intended for the Soyuz MS-03 mission. According to the official Russian media, the launch of the Soyuz MS-02 might be postponed until at least the beginning of October.

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Russian government going broke

4:54 pm

The Russian government, faced with low oil prices, a weak ruble, and a big budget, has been depleting its cash reserves and could run out of money within a year.

The government’s reserve fund is designed to cover shortfalls in the national budget at times of low oil and gas revenues.

Russia’s 2016 budget is based on the assumption the country would be able to sell its oil for $50 per barrel. But the average oil price in the first eight months of the year was less than $43 per barrel. Oil now makes up just 37% of all government revenues, compared to roughly 50% just two years ago.

When their reserve funds run out, they will then dip into another fund reserved for pensions and investment projects. Sounds familiar, doesn’t it? Kind of like the approach the big Democratically controlled U.S. cities like New York have used to continue to spend money they didn’t have.

It is interesting to compare Russia and China these days, especially considering the state of both of their space programs. Despite the fact that many say that China’s success is hollow, they have still been able to fund and build what is now a very vibrant and new manned and planetary space effort. Russia however cannot build anything new, and is now faced with reducing its ISS crew complement because it can’t afford to launch the supplies required for three people.

It will be very interesting to watch this story in Russia unfold.

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Russian ISS crews to be reduced beginning in spring 2017

12:20 pm

Russia today made it official: Beginning in the spring of 2017 their crews to ISS will be reduced from 3 to 2, and will remain reduced until they launch their next ISS module.

“In case the endorsed schedule is observed and the MLM gets into operation in December 2017, the curtailment will affect only one Russian crew,” the source said. “Otherwise the practice of curtailment will continue until the commissioning of the module.”

The Russian state space corporation Roscosmos has to downsize the ISS mission crew as the number of Progress cargo ships launched to the ISS annually will be reduced to three from four at present in the wake of NASA’s refusal to continue using the Progresses and to change over to new U.S. cargo carriers instead, the source said, adding that three Progresses a year is not enough to support three cosmonauts working at the ISS permanently.

The finances will get even more squeezed when the U.S. no longer needs them to launch its astronauts.

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Budget constraints and technical challenges delay commercial crew

10:56 am

A NASA inspector general report released today cites both budget constraints imposed by Congress as well as technical challenges that will delay the first commercial manned mission to ISS until 2018.

When the commercial crew program began, NASA hoped to have routine flights by 2015, but that slipped in large part due to congressional underfunding in the early years. OIG noted today that its 2013 report found that adequate funding was the major challenge for the program. Congress has warmed up to the program, however, and now is approving the full President’s request so funding is not the issue it once was. Technical challenges now are the major hurdle according to today’s report.

The companies’ systems must be certified by NASA before beginning routine flights to ISS. Boeing anticipates receiving certification in January 2018 with its first certified flight in spring 2018, and SpaceX is working toward late 2017 for its first certified mission, the OIG report says. But it is skeptical: “Notwithstanding the contractors’ optimism, based on the information we gathered during our audit, we believe it unlikely that either Boeing or SpaceX will achieve certified, crewed flight to the ISS until late 2018.”

The report has been written prior to yesterday’s Falcon 9 launchpad failure, which will certainly impact the schedule negatively.

Essentially, the report claims that the program was delayed initially by about two to three years because of the refusal of Congress to fund it fully. The delays to come will be instead because of the technical challenges. While I tend to agree with this assessment, I also note that government reports like this are often designed to generate more funds for the agencies involved, not find a better way to do things. If we are not diligent and hard-nosed about how we fund this program I worry that with time commercial crew will become corrupted by the government’s sloppy and inefficient way of doing things, and become as bloated as Orion and SLS. This is one of the reasons I never complained when Congress short funded the program previously, as it forced the companies involved to keep their costs down.

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DNA sequencing successfully done on ISS

8:56 am

Researchers have now confirmed that a new lightweight DNA sequencer has been successfully tested on ISS.

Using a hand-held, USB-powered sequencing device called the MinION, astronaut Kate Rubins, PhD, sequenced samples of mouse, bacteria and virus DNA. This portable sequencing technology could eventually help diagnose sick astronauts, monitor space station food, water, and environment for microbes, and identify extraterrestrial life forms.

As part of a collaboration with NASA on the Biomolecular Sequencer project, Earth-bound researchers – a bicoastal team at UCSF and Weill Cornell Medical College – analyzed the sequencing data from space and compared it to identical samples sequenced on the ground. The analysis would tell whether the journey to space and conditions aboard the space station affected the sequencing results.

…[An] analysis of the space and Earth data found comparable results. “We essentially got equivalent data, and it’s of very high quality, probably within the top 20 percent of nanopore runs that we do routinely here on Earth,” Chiu said.

The press release makes a big deal about how this new equipment will be beneficial for research in space, but I am betting that its creators are as much if not more interested in the profits they will make selling it to customers on Earth, where its portability will make a very useful and beneficial to Earth-bound patients and researchers.

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Dragon splashes down

6:24 pm

The competition heats up: SpaceX’s most recently launched Dragon capsule today returned to Earth and was successfully recovered.

The Dragon is the only spacecraft flying today that can return large amounts of cargo to Earth.

Among the cargo brought back from space Friday were a dozen mice from a Japanese science experiment — the first brought home alive in a Dragon. Samples from mice euthanized as part of an experiment by pharmaceutical company Eli Lilly also were on board. Results were returned from an experiment that studied the behavior of heart cells in microgravity, and from research into the composition of microbes in the human digestive system, NASA said. Findings from both could help keep astronauts healthy during deep space exploration missions.

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Russia reveals its proposed new cargo spacecraft

8:57 am

Government vaporware: In an effort to save money Russian engineers have designed a new cargo spacecraft to replace the Progress freighter.

Faced with latest economic problems, and the need to reduce the number of Progress cargo launches, Russia’s space agency Roskosmos made plans to cut the permanent crew of ISS cosmonauts from three to two people. However the full international crew on the ISS is supposed to include six people with half of it reserved for Russia.

To resolve this supply problem, Roskosmos ordered RKK Energia, its key contractor responsible for human spaceflight, to prepare a preliminary design of a bigger cargo ship by the end of this month. Engineers quickly put together this proposal that would combine off-the-shelf hardware with new technology. … The most important new feature of the proposed cargo ship will be the six-tank cluster to carry more than 1.8 tons of propellant to the station. It will simultaneously serve as a tanker for the space station while also feeding the ship’s own propulsion system. As a result, the new design provides significant mass savings in comparison to the current Progress ships, which need two separate sets of tanks for refueling and maneuvering.

The main engine for the new cargo ship will be borrowed from an existing satellite. Meanwhile, 28 small thrusters for orbit correction and maneuvering will be copied practically unchanged from the Progress.

They hope to fly this new freighter by 2020. I’m willing to bet anyone that this won’t happen.

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Russia’s space station faces funding problems

10:11 am

The Russian space station replacement for ISS, dubbed the Russian Orbital Station (ROS), faces serious budget problems that might delay its launch.

Plans for the post-ISS Russian Orbital Station, ROS, are in limbo, as the nation’s space program has faced budget cuts in 2016. Although the industry has now completed formulating the overall design of the future station, the cash-strapped Roskosmos was yet to approve the formal technical assignment for the development of ROS as of June 2016. The addendum to the Federal Contract, which would fund further development work on the project, has not been issued either.

The ROS project stalled despite being formally approved by three strategy documents governing the current Russian space program: The 10-year Federal Space Program from 2016 to 2025, known as FKP-2025; The Strategy for Russian Piloted Space Flight until 2035 and the Concept of the Russian Piloted Space Flight.

The article also provides a nice overview of how Russia hopes to assembly ROS, partly from new modules and partly from modules they will detach from ISS. The article also made this key point:

According to the current ROS concept, the new Russian station will have a truly unlimited life span, thanks to the possibility to replace any of its modules. (It is practically impossible with the current ISS architecture.) The new Russian station is also designed to operate either as a permanently inhabited outpost or as a periodically visited facility. Russian strategists also hope that the new station will inherit the international nature of the ISS project.

I think Russia is beginning to see the operation of Earth orbital space stations as a profitable niche they can occupy. They know how to do it and already have the technology on hand, and can do it at very affordable prices. Whether they can afford it themselves, however, remains an open question.

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