Tag: engineering
The Dragon launchpad abort test, from the capsule’s point of view
XCOR gets funding from Chinese venture capital firm
The competition heats up: The suborbital space tourism company XCOR has received an influx of capital from a Chinese venture capital firm.
The amount was not disclosed, but the infusion of cash can only help the company move forward on its effort to build a suborbital reusable space plane for carrying tourists.
The competition heats up: The suborbital space tourism company XCOR has received an influx of capital from a Chinese venture capital firm.
The amount was not disclosed, but the infusion of cash can only help the company move forward on its effort to build a suborbital reusable space plane for carrying tourists.
Japan to upgrade its ISS cargo freighter
The competition heats up: Japan has decided to upgrade its HTV cargo freighter to ISS by cutting its weight by 30% and reducing the cost to build it by half.
Without doubt the success of the U.S. in quickly building two private and relatively inexpensive freighters, Dragon and Cygnus, has influenced this decision. The managers in Japan have realized that the HTV is not efficient and could be streamlined, and they are trying now to do it.
Isn’t competition a wonderful thing?
The competition heats up: Japan has decided to upgrade its HTV cargo freighter to ISS by cutting its weight by 30% and reducing the cost to build it by half.
Without doubt the success of the U.S. in quickly building two private and relatively inexpensive freighters, Dragon and Cygnus, has influenced this decision. The managers in Japan have realized that the HTV is not efficient and could be streamlined, and they are trying now to do it.
Isn’t competition a wonderful thing?
Russian executive acknowledges SpaceX is beating them
The competition heats up: The chief executive of one of Russia’s largest aerospace centers admitted during a television appearance on Friday that their country is losing market share to SpaceX.
“The commercial launch market has changed over the past few years. New players have emerged, for example the American company SpaceX. Few people believed that a commercial project would be able to break into the market and create a competitive product, create a carrier [rocket] that’s competitive in terms of price and quality. But this has happened and we have to reckon with it,” he said. “It’s true that we have reduced our presence in the commercial launch market in recent years.
The irony here is that all of the decisions by Putin and the Russian government since SpaceX’s arrival — most especially the decision to consolidate the entire aerospace industry into a single corporation controlled by the government — have actually worked to limit Russia’s ability to compete.
The competition heats up: The chief executive of one of Russia’s largest aerospace centers admitted during a television appearance on Friday that their country is losing market share to SpaceX.
“The commercial launch market has changed over the past few years. New players have emerged, for example the American company SpaceX. Few people believed that a commercial project would be able to break into the market and create a competitive product, create a carrier [rocket] that’s competitive in terms of price and quality. But this has happened and we have to reckon with it,” he said. “It’s true that we have reduced our presence in the commercial launch market in recent years.
The irony here is that all of the decisions by Putin and the Russian government since SpaceX’s arrival — most especially the decision to consolidate the entire aerospace industry into a single corporation controlled by the government — have actually worked to limit Russia’s ability to compete.
India considers its next interplanetary mission
The competition heats up: A committee in India is reviewing proposals for that country’s next unmanned interplanetary probe.
The mission could go back to the Moon or Mars, or maybe go to Venus.
The competition heats up: A committee in India is reviewing proposals for that country’s next unmanned interplanetary probe.
The mission could go back to the Moon or Mars, or maybe go to Venus.
Another Dragon returns home
With a safe splashdown today, SpaceX completed another successful Dragon cargo mission to ISS.
The next Dragon cargo flight is scheduled for June 26, when SpaceX will once again try to land the Falcon 9 first stage vertically.
With a safe splashdown today, SpaceX completed another successful Dragon cargo mission to ISS.
The next Dragon cargo flight is scheduled for June 26, when SpaceX will once again try to land the Falcon 9 first stage vertically.
Zooming in on Ceres’ mysterious double bright spot
Cool image time! Dawn’s science team has released a much closer image of the double bright spots on Ceres.
The spots can now be resolved into a half-dozen spots of varying size, all of which suggest material with a high reflectivity, likely ice. They look so bright because the rest of the dwarf planet’s surface is so dark.
Cool image time! Dawn’s science team has released a much closer image of the double bright spots on Ceres.
The spots can now be resolved into a half-dozen spots of varying size, all of which suggest material with a high reflectivity, likely ice. They look so bright because the rest of the dwarf planet’s surface is so dark.
Russians delay next Angara launch to replace Briz upper stage
The competition heats up? The Russians have delayed until late 2016 the first test flight of the heavy-lift version of their new Angara rocket so that they can fly it with its own new upper stage, rather than using the trouble-plagued Briz upper stage used on Proton.
In other words, they want to dump all the components of the Proton as soon as possible. Whether this will solve the quality control problems that seem to be systemic to their aerospace industry however remains questionable. If I was a commercial satellite company I would have as little faith in Angara, until it has proven itself through a number of launches.
The competition heats up? The Russians have delayed until late 2016 the first test flight of the heavy-lift version of their new Angara rocket so that they can fly it with its own new upper stage, rather than using the trouble-plagued Briz upper stage used on Proton.
In other words, they want to dump all the components of the Proton as soon as possible. Whether this will solve the quality control problems that seem to be systemic to their aerospace industry however remains questionable. If I was a commercial satellite company I would have as little faith in Angara, until it has proven itself through a number of launches.
X-37B launch a success
ULA’s Atlas 5 rocket successfully placed one of the Air Force’s X-37B mini-shuttles into orbit this morning.
ULA’s Atlas 5 rocket successfully placed one of the Air Force’s X-37B mini-shuttles into orbit this morning.
India prepares reusable prototype mini-shuttle for July flight
The competition heats up: Construction of India’s scaled-down prototype of a mini-shuttle is almost complete as they prepare for a July test flight.
This is an unmanned test vehicle. The full scale version, not yet built, would be manned.
The competition heats up: Construction of India’s scaled-down prototype of a mini-shuttle is almost complete as they prepare for a July test flight.
This is an unmanned test vehicle. The full scale version, not yet built, would be manned.
Rogozin pins Proton failure on “moral degeneration”
In a speech before the State Duma, Russian deputy prime minister Dmitry Rogozin blamed the “moral degeneration” of the top leaders of their county’s aerospace industry for Saturday’s Proton launch failure.
“With such degeneration in the leadership of the enterprises, there’s no surprise at such a high degree of accidents,” said Rogozin who said that “space bosses have long gone into their own space.” … The vice premier expressed those that the force of “legal gravitation will lead them [those responsible for the failure of the Progress and the Proton] to where they should be,” RIA Novosti quoted him as saying.
In other words, expect more arrests and prosecutions. Meanwhile, there is little evidence that Rogozin or Putin are doing anything to make their space industry more competitive and thus capable of generating the profits necessary to keep it afloat.
In a speech before the State Duma, Russian deputy prime minister Dmitry Rogozin blamed the “moral degeneration” of the top leaders of their county’s aerospace industry for Saturday’s Proton launch failure.
“With such degeneration in the leadership of the enterprises, there’s no surprise at such a high degree of accidents,” said Rogozin who said that “space bosses have long gone into their own space.” … The vice premier expressed those that the force of “legal gravitation will lead them [those responsible for the failure of the Progress and the Proton] to where they should be,” RIA Novosti quoted him as saying.
In other words, expect more arrests and prosecutions. Meanwhile, there is little evidence that Rogozin or Putin are doing anything to make their space industry more competitive and thus capable of generating the profits necessary to keep it afloat.
House Appropriations reveals its proposed NASA budget
Details here.
As usual, the pork of SLS gets a boost while commercial space gets squeezed. The squeeze however continues to get less with each budget, and as I’ve said before, better a slight squeeze than a blank check. That way the commercial companies will have to stay lean and mean and will avoid getting bloated, like SLS.
Details here.
As usual, the pork of SLS gets a boost while commercial space gets squeezed. The squeeze however continues to get less with each budget, and as I’ve said before, better a slight squeeze than a blank check. That way the commercial companies will have to stay lean and mean and will avoid getting bloated, like SLS.
Update on Seattle’s stalled Big Bertha tunnel project
Link here. The news is not good. It appears that, after disassembling the giant drill’s front end, it has numerous engineering problems. Moreover, the cost keeps going up.
Link here. The news is not good. It appears that, after disassembling the giant drill’s front end, it has numerous engineering problems. Moreover, the cost keeps going up.
Update on Saturday’s Proton launch failure
Link here. The failure was in the third stage, which was the cause of a previous Proton failure last May.
Note that the Proton also put a commercial satellite in the wrong orbit in October when the upper stage underperformed.
Overall, the Russians are doing a very poor job in eliminating the serious quality control problems that have plagued their aerospace industry in recent years. If anything, the problems appear to be worsening.
Link here. The failure was in the third stage, which was the cause of a previous Proton failure last May.
Note that the Proton also put a commercial satellite in the wrong orbit in October when the upper stage underperformed.
Overall, the Russians are doing a very poor job in eliminating the serious quality control problems that have plagued their aerospace industry in recent years. If anything, the problems appear to be worsening.
Balanced rock on Comet 67P/C-G
Cool image time! Rosetta’s high resolution camera has discovered a group of balancing rocks on the surface of Comet 67P/C-G.
The image on the right, cropped and brightened by me, shows the most dramatic of these rocks. The scientists are as yet uncertain on how these rocks got to where they are.
“How this apparent balancing rock on Comet 67P/C-G was formed is not clear at this point,” says OSIRIS Principal Investigator Holger Sierks from the Max Planck Institute for Solar System Research (MPS) in Germany. One possibility is that transport processes related to cometary activity played a role, causing such boulders to move from their original site and reach a new location.
It is also possible that the rocks were sitting on a base of ice that simply evaporated away over time.
Cool image time! Rosetta’s high resolution camera has discovered a group of balancing rocks on the surface of Comet 67P/C-G.
The image on the right, cropped and brightened by me, shows the most dramatic of these rocks. The scientists are as yet uncertain on how these rocks got to where they are.
“How this apparent balancing rock on Comet 67P/C-G was formed is not clear at this point,” says OSIRIS Principal Investigator Holger Sierks from the Max Planck Institute for Solar System Research (MPS) in Germany. One possibility is that transport processes related to cometary activity played a role, causing such boulders to move from their original site and reach a new location.
It is also possible that the rocks were sitting on a base of ice that simply evaporated away over time.
Another Proton launch failure
Eight minutes into Saturday’s Proton launch, intended to place a commercial Mexican communications satellite in orbit, the Russian rocket failed and broke up.
The Russian launch failures just continue to add up. At this rate their ability to hang on to their commercial customers is becoming increasingly difficult.
Eight minutes into Saturday’s Proton launch, intended to place a commercial Mexican communications satellite in orbit, the Russian rocket failed and broke up.
The Russian launch failures just continue to add up. At this rate their ability to hang on to their commercial customers is becoming increasingly difficult.
House Science Committee approves changes to space law
In a series of party line votes, the House Science Committee has approved a number of changes to the laws that govern the private commercial space industry.
Almost all of the changes were advocated by the industry itself, so in general they move to ease the regulatory and liability burdens that has been hampering the industry since the 2004 revisions to space law. While it is very unlikely commercial space can ever get free of strong federal regulation, these changes indicate that they can eventually get some of the worst regulations eased.
I should note also that, as expected, the Democrats opposed any easing of federal power. To them, all things must be controlled by the government, and to ease any regulations is to commit the most horrific of crimes. Note also that the Democratic lead in this opposition came mostly from Congresswoman Donna Edwards (D-Maryland), who has announced her intention to run for the Barbara Mikulski’s senate seat. This mark-up hearing thus gives us an idea of the future impact of Edwards should she win.
In a series of party line votes, the House Science Committee has approved a number of changes to the laws that govern the private commercial space industry.
Almost all of the changes were advocated by the industry itself, so in general they move to ease the regulatory and liability burdens that has been hampering the industry since the 2004 revisions to space law. While it is very unlikely commercial space can ever get free of strong federal regulation, these changes indicate that they can eventually get some of the worst regulations eased.
I should note also that, as expected, the Democrats opposed any easing of federal power. To them, all things must be controlled by the government, and to ease any regulations is to commit the most horrific of crimes. Note also that the Democratic lead in this opposition came mostly from Congresswoman Donna Edwards (D-Maryland), who has announced her intention to run for the Barbara Mikulski’s senate seat. This mark-up hearing thus gives us an idea of the future impact of Edwards should she win.
Arianespace admits it is in a head-to-head competition with SpaceX
In testimony at a hearing in the French parliament the head of Arianespace admitted that the company has been in a head-to-head competition with SpaceX for the past two years, with SpaceX grabbing half the business.
He also claimed that they think they will be able to compete with SpaceX, even if it succeeds in recovering and reusing its first stage.
Israel said Arianespace fully expects SpaceX to succeed in its attempt to recover its Falcon 9 first stage.
But that’s just the start of the challenge, he said. It remains unknown what the refurbishment costs will be compared to the cost of churning out a fresh stage from an existing production line. He said it is also unclear whether commercial fleet operators will immediately accept placing $200 million telecommunications satellites on a rocket with a refurbished stage.
Finally, he said, flying a reusable stage means sacrificing first-stage performance so that enough energy is available to power it back to its recovery point. That power is thus unavailable for the mission, which is one reason why Hawthorne, California-based SpaceX thus far has attempted to recover its stages only on low-orbit missions, not for missions to geostationary transfer orbit, where most commercial satellites operate.
All true, but if Arianespace sits on its hands because of these facts it will eventually lose. It needs to rise to the challenge that SpaceX poses, not poo-poo the challenge.
In testimony at a hearing in the French parliament the head of Arianespace admitted that the company has been in a head-to-head competition with SpaceX for the past two years, with SpaceX grabbing half the business.
He also claimed that they think they will be able to compete with SpaceX, even if it succeeds in recovering and reusing its first stage.
Israel said Arianespace fully expects SpaceX to succeed in its attempt to recover its Falcon 9 first stage.
But that’s just the start of the challenge, he said. It remains unknown what the refurbishment costs will be compared to the cost of churning out a fresh stage from an existing production line. He said it is also unclear whether commercial fleet operators will immediately accept placing $200 million telecommunications satellites on a rocket with a refurbished stage.
Finally, he said, flying a reusable stage means sacrificing first-stage performance so that enough energy is available to power it back to its recovery point. That power is thus unavailable for the mission, which is one reason why Hawthorne, California-based SpaceX thus far has attempted to recover its stages only on low-orbit missions, not for missions to geostationary transfer orbit, where most commercial satellites operate.
All true, but if Arianespace sits on its hands because of these facts it will eventually lose. It needs to rise to the challenge that SpaceX poses, not poo-poo the challenge.
Sarah Brightman pulls out of her flight to ISS later this year
Citing family issues, Sarah Brightman has suddenly canceled her plans to fly to ISS later this year as a space tourist.
All the press announcements of this decision emphasize that she was doing quite well in the training program, but one wonders. There had been rumors of being replaced in recent weeks, and the “family issues” cited in today’s announcement could be a cover for anything.
Either way, this is unfortunate, because her flight would have been quite entertaining and would have done a great deal to promote the space tourism industry.
Citing family issues, Sarah Brightman has suddenly canceled her plans to fly to ISS later this year as a space tourist.
All the press announcements of this decision emphasize that she was doing quite well in the training program, but one wonders. There had been rumors of being replaced in recent weeks, and the “family issues” cited in today’s announcement could be a cover for anything.
Either way, this is unfortunate, because her flight would have been quite entertaining and would have done a great deal to promote the space tourism industry.
What caused the failed separation of the Soyuz and Progress?
A good translation of this week’s press release from the investigation into the April 28 Progress failure indicates that the failure occurred because of an abnormal separation of the freighter from the upper stage.
After reviewing all the materials, members of the State Commission came to a preliminary conclusion that a version of the abnormal separation had been objectively confirmed, which includes two subsequent events related to the depressurization (disintegration after the cutoff of the third-stage engine) first of the oxidizer tank and then of the fuel tank, Roskosmos said.
In other words, the separation was so abnormal it put both the freighter and the upper stages in the wrong orbits, with the Progress tumbling and damaged, and with the upper stage almost immediately disintegrating.
They are now studying the data to try to figure out what caused the bad separation so they can inspect other Soyuz upper stages for the same problem and fix them before launch.
A good translation of this week’s press release from the investigation into the April 28 Progress failure indicates that the failure occurred because of an abnormal separation of the freighter from the upper stage.
After reviewing all the materials, members of the State Commission came to a preliminary conclusion that a version of the abnormal separation had been objectively confirmed, which includes two subsequent events related to the depressurization (disintegration after the cutoff of the third-stage engine) first of the oxidizer tank and then of the fuel tank, Roskosmos said.
In other words, the separation was so abnormal it put both the freighter and the upper stages in the wrong orbits, with the Progress tumbling and damaged, and with the upper stage almost immediately disintegrating.
They are now studying the data to try to figure out what caused the bad separation so they can inspect other Soyuz upper stages for the same problem and fix them before launch.
Engine failure for Japan’s Procyon probe
The failure of the ion engine of an experimental cubesat called Procyon, launched with Hayabusa-2 to test small satellite technologies, has forced engineers to cancel their attempt to have the probe fly past a different asteroid.
They think dust in the engine caused a short circuit.
The failure of the ion engine of an experimental cubesat called Procyon, launched with Hayabusa-2 to test small satellite technologies, has forced engineers to cancel their attempt to have the probe fly past a different asteroid.
They think dust in the engine caused a short circuit.
New Horizons spots all of Pluto’s 5 known moons
New Horizons has now been able to image all of Pluto’s known moons.
Pluto’s five known satellites are Charon, Hydra, Nix, Kerberos and Styx. At 648 miles (1,043 km) in diameter, Charon is nearly half as wide as Pluto itself, but the other four moons are minuscule. Kerberos and Styx, for example, are thought to be just 4 to 13 miles (7 to 21 km) and 6 to 20 miles (10 to 32 km) wide, respectively.
That the spacecraft has been able to spot them all this soon bodes well for what it will see when if flies past Pluto in July.
New Horizons has now been able to image all of Pluto’s known moons.
Pluto’s five known satellites are Charon, Hydra, Nix, Kerberos and Styx. At 648 miles (1,043 km) in diameter, Charon is nearly half as wide as Pluto itself, but the other four moons are minuscule. Kerberos and Styx, for example, are thought to be just 4 to 13 miles (7 to 21 km) and 6 to 20 miles (10 to 32 km) wide, respectively.
That the spacecraft has been able to spot them all this soon bodes well for what it will see when if flies past Pluto in July.
Russians confirm flip of Progress and Soyuz launches
It’s official: The launch of the next crew to ISS will be delayed until late July to allow both a Progress freighter to launch first as well as give investigators more time to figure out what went wrong with the Soyuz upper stage during last month’s Progress launch.
In addition, the crew that had been slated to return to Earth this week will remain on board for another month to reduce the amount of time the station is manned with only 3 astronauts.
It appears that investigation is zeroing in on the upper stage of the Soyuz rocket, whose tanks apparently depressurized prematurely, causing the freighter to separate early and end up in an incorrect orbit.
It’s official: The launch of the next crew to ISS will be delayed until late July to allow both a Progress freighter to launch first as well as give investigators more time to figure out what went wrong with the Soyuz upper stage during last month’s Progress launch.
In addition, the crew that had been slated to return to Earth this week will remain on board for another month to reduce the amount of time the station is manned with only 3 astronauts.
It appears that investigation is zeroing in on the upper stage of the Soyuz rocket, whose tanks apparently depressurized prematurely, causing the freighter to separate early and end up in an incorrect orbit.
Construction at SpaceX’s new spaceport about to begin
The competition heats up: SpaceX has begun prepping the construction sites at its private spaceport in Brownsville, Texas.
The county has begun work on a road to where the spaceport command center will be, and SpaceX has established its construction headquarters in a double-wide trailer there. It is expected that actual construction of the command center will begin in August, with the launchpad construction to follow.
The expected cost for building the entire spaceport: $100 million. Compare that to the billions the Russians are spending for Vostochny, or the billions that NASA spends on comparable facilities.
The competition heats up: SpaceX has begun prepping the construction sites at its private spaceport in Brownsville, Texas.
The county has begun work on a road to where the spaceport command center will be, and SpaceX has established its construction headquarters in a double-wide trailer there. It is expected that actual construction of the command center will begin in August, with the launchpad construction to follow.
The expected cost for building the entire spaceport: $100 million. Compare that to the billions the Russians are spending for Vostochny, or the billions that NASA spends on comparable facilities.
Sunset on Mars
Cool image time! The image above is not a sunset over the Blue Ridge Mountains of Tennessee. It is a beautiful blue sunset on Mars, taken by Curiosity from Gale Crater.
The image is the first sunset imaged by Curiosity in color, and is calibrated to match what the human eye would see.
Meanwhile, the rover’s journey continues, with a slight detour to check out an interesting hillside.
Cool image time! The image above is not a sunset over the Blue Ridge Mountains of Tennessee. It is a beautiful blue sunset on Mars, taken by Curiosity from Gale Crater.
The image is the first sunset imaged by Curiosity in color, and is calibrated to match what the human eye would see.
Meanwhile, the rover’s journey continues, with a slight detour to check out an interesting hillside.
The 9 strangest drones from the world’s biggest drone show
Link here.
Link here.
New images of Dawn’s double bright spot
Cool image time! Dawn has released a new animation made from images taken in early May, showing more details of the dwarf planet’s double bright spot.
As they note at the link, the double spot is now “revealed to be composed of many smaller spots.” As they also add, “Their exact nature remains unknown.”
Dawn’s engineers are now beginning to ease the spacecraft down to its survey orbit, about 2,700 miles above the surface.
Cool image time! Dawn has released a new animation made from images taken in early May, showing more details of the dwarf planet’s double bright spot.
As they note at the link, the double spot is now “revealed to be composed of many smaller spots.” As they also add, “Their exact nature remains unknown.”
Dawn’s engineers are now beginning to ease the spacecraft down to its survey orbit, about 2,700 miles above the surface.
XCOR progress report in construction of Lynx
The competition heats up: In a press release today XCOR announced new progress in the assembly of its Lynx suborbital space plane.
They revealed that they have “bonded the XCOR Lynx Mark I strakes to the Lynx spacecraft fuselage.”
To be honest, my impression of the work at XCOR from the photo at the link is that of one or two guys working in their spare time in their garage on restoring a classic car. Though I wish them well, the progress seems very slow, and piecemeal. In fact, it reminds me much of Richard Branson’s many false promises at Virgin Galactic. For example, back in 2012 XCOR announced a test flight schedule for 2013. None of those flights ever happened. Then in 2014 they said they hoped to begin flight tests before the end of that year. Again, nothing happened.
At least with this most recent release they aren’t saying when they plan to fly, since from the picture it appears they are quite a long ways from doing so. It is far better to make real promises that false ones, and XCOR might have learned that lesson watching the public relations problems Richard Branson has had in recent years.
Even so, I have been consistently very skeptical of this project. In fact, back in October 2013, in describing the effort of Blue Origin in the suborbital tourism trade, I predicted the following:
That the present ship [Blue Origin’s New Shepard] is being designed for suborbital tourist flights makes it a direct competitor of Virgin Galactic and XCOR. And considering the problems that Virgin Galactic has with SpaceShipTwo [written one year before its crash], and that XCOR doesn’t have the big bucks of Bezos, Blue Origin might actually be in the lead in the race to put the first tourists in space.
It appears now that this prediction was right on the money.
The competition heats up: In a press release today XCOR announced new progress in the assembly of its Lynx suborbital space plane.
They revealed that they have “bonded the XCOR Lynx Mark I strakes to the Lynx spacecraft fuselage.”
To be honest, my impression of the work at XCOR from the photo at the link is that of one or two guys working in their spare time in their garage on restoring a classic car. Though I wish them well, the progress seems very slow, and piecemeal. In fact, it reminds me much of Richard Branson’s many false promises at Virgin Galactic. For example, back in 2012 XCOR announced a test flight schedule for 2013. None of those flights ever happened. Then in 2014 they said they hoped to begin flight tests before the end of that year. Again, nothing happened.
At least with this most recent release they aren’t saying when they plan to fly, since from the picture it appears they are quite a long ways from doing so. It is far better to make real promises that false ones, and XCOR might have learned that lesson watching the public relations problems Richard Branson has had in recent years.
Even so, I have been consistently very skeptical of this project. In fact, back in October 2013, in describing the effort of Blue Origin in the suborbital tourism trade, I predicted the following:
That the present ship [Blue Origin’s New Shepard] is being designed for suborbital tourist flights makes it a direct competitor of Virgin Galactic and XCOR. And considering the problems that Virgin Galactic has with SpaceShipTwo [written one year before its crash], and that XCOR doesn’t have the big bucks of Bezos, Blue Origin might actually be in the lead in the race to put the first tourists in space.
It appears now that this prediction was right on the money.
Russian sources confirm their plan to flip launches to ISS
Though not yet officially decided, managers in the Russian space agency are definitely considering switching the launch dates of the next Soyuz and Progress missions to ISS, so that the unmanned cargo flight flies first.
Both spacecraft use the Soyuz rocket, and it now appears that the cause of last week’s Progress failure was a problem in the Soyuz third stage. They want to check out all Soyuz third stages before they put any humans on one. Switching the flights gives them time to do it. It also gets needed cargo to ISS sooner.
Though not yet officially decided, managers in the Russian space agency are definitely considering switching the launch dates of the next Soyuz and Progress missions to ISS, so that the unmanned cargo flight flies first.
Both spacecraft use the Soyuz rocket, and it now appears that the cause of last week’s Progress failure was a problem in the Soyuz third stage. They want to check out all Soyuz third stages before they put any humans on one. Switching the flights gives them time to do it. It also gets needed cargo to ISS sooner.