An update on Stratolaunch
An update on Stratolaunch.
An update on Stratolaunch.
Tag: spaceflight
An update on Stratolaunch
JPL has issued a press release “reality check” on the impact possibilities of asteroid 2011 AG5 in 2040.
JPL has issued a press release “reality check” on the impact possibilities of asteroid 2011 AG5 in 2040.
“In September 2013, we have the opportunity to make additional observations of 2011 AG5 when it comes within 91 million miles (147 million kilometers) of Earth,” said Don Yeomans, manager of NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory in Pasadena, Calif. “It will be an opportunity to observe this space rock and further refine its orbit. Because of the extreme rarity of an impact by a near-Earth asteroid of this size, I fully expect we will be able to significantly reduce or rule out entirely any impact probability for the foreseeable future.” Even better observations will be possible in late 2015.
In other words, we really will not know anything more about these possibilities until late next year.
JPL has issued a press release “reality check” on the impact possibilities of asteroid 2011 AG5 in 2040.
“In September 2013, we have the opportunity to make additional observations of 2011 AG5 when it comes within 91 million miles (147 million kilometers) of Earth,” said Don Yeomans, manager of NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory in Pasadena, Calif. “It will be an opportunity to observe this space rock and further refine its orbit. Because of the extreme rarity of an impact by a near-Earth asteroid of this size, I fully expect we will be able to significantly reduce or rule out entirely any impact probability for the foreseeable future.” Even better observations will be possible in late 2015.
In other words, we really will not know anything more about these possibilities until late next year.
ATK prepares for another test firing of its five-segment solid rocket motor.
ATK prepares for another test firing of its five-segment solid rocket motor.
The qualification campaign, led by rocket-builder ATK, will prove the solid-fueled motor is ready to help propel the Space Launch System from Earth on two test flights in 2017 and 2021.
Though obviously funded out of the Space Launch System program (SLS), there is no guarantee at this moment that ATK’s solid rocket will be used in these test flights. NASA has said that they are considering all options for picking the launch rocket.
In a sense, we are now seeing a side benefit produced by relying on independent and competing private companies to get into space. It has placed pressure on NASA and the companies building SLS to perform. Unlike in the past, when failure to produce a new rocket or spaceship meant that NASA would simply propose a new concept and start again, now failure will mean that someone else might get the work. The result: SLS might actually get built, for less money and faster.
Though I don’t see how NASA can possibly cut the costs down to compete with these private companies, their effort might succeed enough for Congress to keep the money spigots open until the rocket gets built.
Even as I say this I remain skeptical. Considering the federal budget situation, the politics of the upcoming election, and the strong possibility that private companies will successfully provide that launch capability at a tenth the cost, I expect that sometime in the next two or three years Congress will finally balk at SLS’s cost, and eliminate it.
ATK prepares for another test firing of its five-segment solid rocket motor.
The qualification campaign, led by rocket-builder ATK, will prove the solid-fueled motor is ready to help propel the Space Launch System from Earth on two test flights in 2017 and 2021.
Though obviously funded out of the Space Launch System program (SLS), there is no guarantee at this moment that ATK’s solid rocket will be used in these test flights. NASA has said that they are considering all options for picking the launch rocket.
In a sense, we are now seeing a side benefit produced by relying on independent and competing private companies to get into space. It has placed pressure on NASA and the companies building SLS to perform. Unlike in the past, when failure to produce a new rocket or spaceship meant that NASA would simply propose a new concept and start again, now failure will mean that someone else might get the work. The result: SLS might actually get built, for less money and faster.
Though I don’t see how NASA can possibly cut the costs down to compete with these private companies, their effort might succeed enough for Congress to keep the money spigots open until the rocket gets built.
Even as I say this I remain skeptical. Considering the federal budget situation, the politics of the upcoming election, and the strong possibility that private companies will successfully provide that launch capability at a tenth the cost, I expect that sometime in the next two or three years Congress will finally balk at SLS’s cost, and eliminate it.
The first industrial railgun has begun firing tests at the Naval Surface Warfare Center in Virginia.
The first industrial railgun has begun firing tests at the Naval Surface Warfare Center in Virginia. With video.
Following a series of low-energy test shots, evaluation of the launcher is now underway and will see tests conducted at 20 megajoules to 32 megajoules – one megajoule is equivalent to a 1-ton object being thrust at 100 mph (161 km/h). Test projectiles similar to those previously fired from [the] laboratory’s launcher will be fired at speeds of 4,500 to 5,600 mph (7,242 to 9,012 km/h) using electricity instead of chemical propellants.
These speeds are a only little less than one third escape velocity. Pump this technology up a bit and you could have a cheap way to get simple supplies, such as fuel, water, oxygen, into orbit. In fact, one company is even trying to do it.
The first industrial railgun has begun firing tests at the Naval Surface Warfare Center in Virginia. With video.
Following a series of low-energy test shots, evaluation of the launcher is now underway and will see tests conducted at 20 megajoules to 32 megajoules – one megajoule is equivalent to a 1-ton object being thrust at 100 mph (161 km/h). Test projectiles similar to those previously fired from [the] laboratory’s launcher will be fired at speeds of 4,500 to 5,600 mph (7,242 to 9,012 km/h) using electricity instead of chemical propellants.
These speeds are a only little less than one third escape velocity. Pump this technology up a bit and you could have a cheap way to get simple supplies, such as fuel, water, oxygen, into orbit. In fact, one company is even trying to do it.
Great Heights Reached with Gaffer Tape
According to Orbital Sciences’ CEO, problems in launchpad construction have been the primary reason the first launch of Antares rocket/Cygnus capsule has been delayed.
Fingers crossed: According to Orbital Sciences’ CEO, problems in launchpad construction have been the primary reason the first launch of Antares rocket/Cygnus capsule has been delayed.
Fingers crossed: According to Orbital Sciences’ CEO, problems in launchpad construction have been the primary reason the first launch of Antares rocket/Cygnus capsule has been delayed.
“We hope to have the rocket motor in the spaceship later this year and start powered flight testing.”
Fingers crossed: “We hope to have the rocket motor in the spaceship later this year and start powered flight testing.”
Fingers crossed: “We hope to have the rocket motor in the spaceship later this year and start powered flight testing.”
The state of Orion’s construction, including a scheduled parachute drop test this Wednesday
The state of Orion’s construction, including a scheduled parachute drop test this Wednesday.
The state of Orion’s construction, including a scheduled parachute drop test this Wednesday.
Orbital Sciences hopes to put its Antares rocket on the launchpad in five weeks.
Fingers crossed: Orbital Sciences expects to put its Antares rocket on the launchpad for initial checkout in about five weeks.
Fingers crossed: Orbital Sciences expects to put its Antares rocket on the launchpad for initial checkout in about five weeks.
What Would Happen If You Shot a Gun In Space?
Asking the important questions: What would happen if you shot a gun in space?
Asking the important questions: What would happen if you shot a gun in space?
The fundamental design flaw of all of Tesla Motors’ electric cars.
The fundamental design flaw of all of Tesla Motors’ electric cars.
A Tesla Roadster that is simply parked without being plugged in will eventually become a “brick”. The parasitic load from the car’s always-on subsystems continually drains the battery and if the battery’s charge is ever totally depleted, it is essentially destroyed. Complete discharge can happen even when the car is plugged in if it isn’t receiving sufficient current to charge, which can be caused by something as simple as using an extension cord. After battery death, the car is completely inoperable. At least in the case of the Tesla Roadster, it’s not even possible to enable tow mode, meaning the wheels will not turn and the vehicle cannot be pushed nor transported to a repair facility by traditional means.
This problem could destroy the company, which, believe it or not, might actually have a negative effect on the American space program! Elon Musk, the man behind SpaceX and the Falcon 9 rocket and the Dragon capsule is also the CEO of Tesla. If Tesla goes down, one wonders if that could have an impact on SpaceX’s effort to get Americans into space.
The fundamental design flaw of all of Tesla Motors’ electric cars.
A Tesla Roadster that is simply parked without being plugged in will eventually become a “brick”. The parasitic load from the car’s always-on subsystems continually drains the battery and if the battery’s charge is ever totally depleted, it is essentially destroyed. Complete discharge can happen even when the car is plugged in if it isn’t receiving sufficient current to charge, which can be caused by something as simple as using an extension cord. After battery death, the car is completely inoperable. At least in the case of the Tesla Roadster, it’s not even possible to enable tow mode, meaning the wheels will not turn and the vehicle cannot be pushed nor transported to a repair facility by traditional means.
This problem could destroy the company, which, believe it or not, might actually have a negative effect on the American space program! Elon Musk, the man behind SpaceX and the Falcon 9 rocket and the Dragon capsule is also the CEO of Tesla. If Tesla goes down, one wonders if that could have an impact on SpaceX’s effort to get Americans into space.
Orbital Sciences has delayed until late June the first test launch of its Antares rocket, which in turn will delay until late August the first flight of its Cygnus cargo freighter to ISS.
Orbital Sciences has delayed until late June the first test launch of its Antares rocket, which in turn will delay until late August the first flight of its Cygnus cargo freighter to ISS.
Orbital Sciences has delayed until late June the first test launch of its Antares rocket, which in turn will delay until late August the first flight of its Cygnus cargo freighter to ISS.
John Glenn – the first American in orbit
An evening pause: On the fiftieth anniversary of John Glenn’s orbital flight.
After putting a chimpanzee into orbit in November, NASA finally felt ready to send a man into orbit to answer the Soviets and their two manned orbital missions of Gagarin and Titov the previous year.
After Glenn’s mission and for the next few months, it looked like the U.S. was catching up with the Soviets in space. That would change before the year was summer was over.
The video below gives a nice summary of key moments in Glenn’s flight, though the special effects of the “fireflies” is poorly done. And we now know that the “fireflies” were nothing more than frozen particles of condensation coming off the capsule.
India’s second lunar probe, Chandrayaan-2, faces possible launch delays
India’s second lunar probe, Chandrayaan-2, faces possible launch delays due to limitation in their rocket engine capabilities.
India’s second lunar probe, Chandrayaan-2, faces possible launch delays due to limitation in their rocket engine capabilities.
ISS to finally get an experimental centrifuge
At last! The ISS is to finally going to get an experimental centrifuge.
I have studied at length all the research done on all the space station ever launched, from Skylab, all the Russian Salyut stations, Mir, and now ISS, and from I could tell, only once was a centrifuge experiment put in space, by the Russians. Though the centrifuge was small and the results inconclusive, they suggested that even the addition of a truly miniscule amount of force could significantly mitigate the effects of weightlessness on plants and materials.
To finally get an experimental centrifuge on ISS is wonderful news. In order to build an interplanetary spaceship as cheaply and as efficiently as possible using centrifugal force to create artificial gravity we need to know the minimum amount of centrifugal force we need. Less energy will probably require less complex engineering, which should also require less launch weight to orbit, lowering the cost in all ways.
At last! The ISS is to finally going to get an experimental centrifuge.
I have studied at length all the research done on all the space station ever launched, from Skylab, all the Russian Salyut stations, Mir, and now ISS, and from I could tell, only once was a centrifuge experiment put in space, by the Russians. Though the centrifuge was small and the results inconclusive, they suggested that even the addition of a truly miniscule amount of force could significantly mitigate the effects of weightlessness on plants and materials.
To finally get an experimental centrifuge on ISS is wonderful news. In order to build an interplanetary spaceship as cheaply and as efficiently as possible using centrifugal force to create artificial gravity we need to know the minimum amount of centrifugal force we need. Less energy will probably require less complex engineering, which should also require less launch weight to orbit, lowering the cost in all ways.
Why things break in space
Updated and bumped: I will be discussing this story on the the John Batchelor Show tonight, February 17, Friday, 12:50 am (Eastern), and then re-aired on Sunday, February 19, 12:50 am (Eastern).
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Someday, humans will be traveling far from Earth in large interplanetary spaceships not very different than the International Space Station (ISS). Isolated and dependent on these ships for survival, these travelers will have no choice but to know how to maintain and repair their vessels whenever something on them should break.
And things will break. Entropy rules, and with time all things deteriorate and fail.
Each failure, however, is also a precious opportunity to learn something about the environment of space. Why did an item break? What caused it to fail? Can we do something to prevent the failure in the future? Finding answers to these questions will make it possible to build better and more reliable interplanetary spaceships.
ISS is presently our only testbed for studying these kinds of engineering questions. And in 2007, a spectacular failure, combined with an epic spacewalk, gave engineers at the Johnson Space Center a marvelous opportunity to study these very issues.
» Read more
China’s next launch of its Shenzhou capsule will be manned
China’s next launch of its Shenzhou capsule this summer will be manned.
It seems those rumors weren’t true. Or maybe they were.
Just like in the 1960s with the Soviet Union, the only way to find out what exactly is going on in the Chinese space program is to wait for something to actually happen.
China’s next launch of its Shenzhou capsule this summer will be manned.
It seems those rumors weren’t true. Or maybe they were.
Just like in the 1960s with the Soviet Union, the only way to find out what exactly is going on in the Chinese space program is to wait for something to actually happen.
The decision by China to launch their next Shenzhou manned capsule unnamed has made at least one China space expert worried.
The decision by China to launch their next Shenzhou manned capsule unmanned has made at least one China space expert worried.
Why the sudden change? It seems clear that there must be technical issues at work, and they must be fairly serious. Statements in the Chinese media hint at performing tests on the small tunnel connecting the Shenzhou spacecraft to the Tiangong module after docking. If we decode the typically vague reportage, it seems fair to assume that there could be some sort of technical problem with the pressurization of this tunnel. This problem could have been exposed during the Shenzhou 8 docking.
The decision by China to launch their next Shenzhou manned capsule unmanned has made at least one China space expert worried.
Why the sudden change? It seems clear that there must be technical issues at work, and they must be fairly serious. Statements in the Chinese media hint at performing tests on the small tunnel connecting the Shenzhou spacecraft to the Tiangong module after docking. If we decode the typically vague reportage, it seems fair to assume that there could be some sort of technical problem with the pressurization of this tunnel. This problem could have been exposed during the Shenzhou 8 docking.
Europe’s new Vega rocket successfully put nine satellites into orbit this morning on its first flight.
Competition: Europe’s new Vega rocket successfully put nine satellites into orbit this morning on its first flight.
Competition: Europe’s new Vega rocket successfully put nine satellites into orbit this morning on its first flight.
Want to buy a former NASA radio dish? All you need is $4.2 million.
Want to buy a former NASA radio dish? All you need is $4.2 million.
Want to buy a former NASA radio dish? All you need is $4.2 million.
For its second attempt to launch the Orbiting Carbon Observatory, NASA has finally decided to dump Orbital Sciences’ Taurus XL rocket, the same rocket that failed on two previous launch attempts.
For its second attempt to launch the Orbiting Carbon Observatory, NASA has finally decided to dump Orbital Sciences’ Taurus XL rocket, the same rocket that failed on two previous launch attempts.
The decision to change launch rockets will delay launch by at least a year. Still, this is better than losing a third research satellite.
For its second attempt to launch the Orbiting Carbon Observatory, NASA has finally decided to dump Orbital Sciences’ Taurus XL rocket, the same rocket that failed on two previous launch attempts.
The decision to change launch rockets will delay launch by at least a year. Still, this is better than losing a third research satellite.
Japan’s space agency is lobbying its government for the funds to develop its own manned space capsule capability.
Japan’s space agency is lobbying its government for the funds to develop its own manned space capsule capability.
Japan’s space agency is lobbying its government for the funds to develop its own manned space capsule capability.
The final report admits that it was a programming error that doomed Phobos-Grunt, not cosmic radiation or U.S. radar.
The final Russian investigation has admitted that it was a programming error that doomed Phobos-Grunt, not cosmic radiation or U.S. radar.
The final Russian investigation has admitted that it was a programming error that doomed Phobos-Grunt, not cosmic radiation or U.S. radar.
All NASA funding for the European ExoMars mission appears to have been cut by the Obama administration.
All NASA funding for ESA’s unmanned ExoMars mission appears to have been cut by the Obama administration.
A public announcement by Nasa of its withdrawal from the ExoMars programme, as it is known in Europe, will probably come once President Obama’s 2013 Federal Budget Request is submitted. This request, expected in the coming days, will give the US space agency a much clearer view of how much money it has to implement its various projects. “The Americans have indicated that the possibility of them participating is now low – very low. It’s highly unlikely,” said Alvaro Gimenez, Esa’s director of science.
Though this story doesn’t confirm the earlier rumors that the Obama administration was going to eliminate the entire NASA planetary program, it sure lends those rumors further weight. However, the new budget should be released any day now, when we will finally find out.
All NASA funding for ESA’s unmanned ExoMars mission appears to have been cut by the Obama administration.
A public announcement by Nasa of its withdrawal from the ExoMars programme, as it is known in Europe, will probably come once President Obama’s 2013 Federal Budget Request is submitted. This request, expected in the coming days, will give the US space agency a much clearer view of how much money it has to implement its various projects. “The Americans have indicated that the possibility of them participating is now low – very low. It’s highly unlikely,” said Alvaro Gimenez, Esa’s director of science.
Though this story doesn’t confirm the earlier rumors that the Obama administration was going to eliminate the entire NASA planetary program, it sure lends those rumors further weight. However, the new budget should be released any day now, when we will finally find out.
Space technology at the Super Bowl
More and more the Atlas V appears to be “the vehicle of choice for manned missions.”
More and more the Atlas V appears to be “the vehicle of choice for manned missions.” Key quote:
NASA could have gone down this path last decade and possibly shaved years — and billions of dollars — off the development time of a capability to carry astronauts to the space station.
More and more the Atlas V appears to be “the vehicle of choice for manned missions.” Key quote:
NASA could have gone down this path last decade and possibly shaved years — and billions of dollars — off the development time of a capability to carry astronauts to the space station.
R.I.P: Roger Boisjoly, 73, has died.
R.I.P: Roger Boisjoly, 73, has died.
Boisjoly was the engineer who in 1985 warned NASA about the danger of launching the shuttle in cold weather, that the solid rocket booster’s joints might not seal correctly under those conditions, thereby causing a catastrophic failure. Sadly, he was ignored, even ostracized, and on January 28, 1986, Challenger broke apart 74 seconds after launch, killing seven astronauts.
R.I.P: Roger Boisjoly, 73, has died.
Boisjoly was the engineer who in 1985 warned NASA about the danger of launching the shuttle in cold weather, that the solid rocket booster’s joints might not seal correctly under those conditions, thereby causing a catastrophic failure. Sadly, he was ignored, even ostracized, and on January 28, 1986, Challenger broke apart 74 seconds after launch, killing seven astronauts.
Iran’s state media today announced that the country had used its own rocket to put into orbit a small weather/Earth observation microsat,
Iran’s state media today announced that the country had used its own rocket to put into orbit a small weather/Earth observation microsat.
Iran’s state media today announced that the country had used its own rocket to put into orbit a small weather/Earth observation microsat.
Virgin Galactic hopes to begin the first powered flight tests of SpaceShipTwo this coming summer.
Getting close: Virgin Galactic hopes to begin the first powered flight tests of SpaceShipTwo this coming summer.
“Over the next few months we’re integrating parts and pieces of the hybrid rocket motor into the SpaceShipTwo airframe, completing ground testing of the rocket motor, and then [will] try and start powered flight over the summer,” [chief executive officer and president George] Whitesides told SPACE.com. Those rocket-powered flights, he said, will continue for some period of time. Whitesides said it looks possible “to get up to space altitude by the end of the year, if all goes well.”
The company is also building a second WhiteKnightTwo and SpaceShipTwo,
Getting close: Virgin Galactic hopes to begin the first powered flight tests of SpaceShipTwo this coming summer.
“Over the next few months we’re integrating parts and pieces of the hybrid rocket motor into the SpaceShipTwo airframe, completing ground testing of the rocket motor, and then [will] try and start powered flight over the summer,” [chief executive officer and president George] Whitesides told SPACE.com. Those rocket-powered flights, he said, will continue for some period of time. Whitesides said it looks possible “to get up to space altitude by the end of the year, if all goes well.”
The company is also building a second WhiteKnightTwo and SpaceShipTwo,
New dates, March 20 and May 15 respectively, have been set for the ISS launches of SpaceX’s Dragon capsule and the next manned Soyuz capsule.
New dates, March 20 and May 15 respectively, have been set for the ISS launches of SpaceX’s Dragon capsule and the next manned Soyuz capsule.
The launch date for Dragon, however, is far more tentative.
New dates, March 20 and May 15 respectively, have been set for the ISS launches of SpaceX’s Dragon capsule and the next manned Soyuz capsule.
The launch date for Dragon, however, is far more tentative.