Tag: engineering
New research suggests that the high radiation experienced by astronauts on interplanetary journeys could accelerate the onset of Alzheimer’s.
New research suggests that the high radiation experienced by astronauts on interplanetary journeys could accelerate the onset of Alzheimer’s.
Some caveats: This research was done on Earth with mice. It also assumes that it will be impossible to protect astronauts from all types of radiation while on their journey.
New research suggests that the high radiation experienced by astronauts on interplanetary journeys could accelerate the onset of Alzheimer’s.
Some caveats: This research was done on Earth with mice. It also assumes that it will be impossible to protect astronauts from all types of radiation while on their journey.
Orbital Sciences will do a hot fire launchpad test of its Antares rocket in January, followed by a test launch to orbit in February, and a first flight of the Cygnus capsule in April.
Schedule update: Orbital Sciences will do a hot fire launchpad test of its Antares rocket in January, followed by a test launch to orbit in February, and a first flight of the Cygnus capsule in April.
Schedule update: Orbital Sciences will do a hot fire launchpad test of its Antares rocket in January, followed by a test launch to orbit in February, and a first flight of the Cygnus capsule in April.
An ion test engine has set a new record for continuous operation.
An ion test engine has set a new record for continuous operation.
The NEXT ion thruster is one of NASA’s latest generation of engines. With a power output of seven kilowatts, it’s over twice as powerful as the ones used aboard the unmanned Dawn space probe. Yet it is simpler in design, lighter and more efficient, and is also designed for very high endurance. Its current record of 43,000 hours is the equivalent of nearly five years of continuous operation while consuming only 770 kg (1697.5 lbs) of xenon propellant.
This engine will make the unmanned exploration of the asteroid belt extremely easy and practical.
An ion test engine has set a new record for continuous operation.
The NEXT ion thruster is one of NASA’s latest generation of engines. With a power output of seven kilowatts, it’s over twice as powerful as the ones used aboard the unmanned Dawn space probe. Yet it is simpler in design, lighter and more efficient, and is also designed for very high endurance. Its current record of 43,000 hours is the equivalent of nearly five years of continuous operation while consuming only 770 kg (1697.5 lbs) of xenon propellant.
This engine will make the unmanned exploration of the asteroid belt extremely easy and practical.
It appears that SpaceX and Orbcomm have finalized their launch agreement.
The competition heats up: It appears that SpaceX and Orbcomm have finalized their launch agreement.
On December 21, 2012, ORBCOMM Inc. (Nasdaq: ORBC) and Space Exploration Technologies Corp. (SpaceX) entered into a Launch Services Agreement pursuant to which SpaceX will provide launch services for the carriage into low-Earth-orbit of up to 18 ORBCOMM second-generation commercial communications satellites currently being constructed by Sierra Nevada Corporation.
The agreement schedules the launches for sometime between the second quarter of 2013 and the second quarter of 2014, subject to normal scheduling changes.
This is a strong endorsement by Orbcomm of SpaceX’s Falcon 9 rocket, despite the engine problem which prevented an Orbcomm prototype satellite from reaching its correct orbit on the last Falcon 9 launch. Also, note that Sierra Nevada is building the satellites, thereby giving that company a firm foundations while it also builds its Dream Chaser manned spacecraft.
The competition heats up: It appears that SpaceX and Orbcomm have finalized their launch agreement.
On December 21, 2012, ORBCOMM Inc. (Nasdaq: ORBC) and Space Exploration Technologies Corp. (SpaceX) entered into a Launch Services Agreement pursuant to which SpaceX will provide launch services for the carriage into low-Earth-orbit of up to 18 ORBCOMM second-generation commercial communications satellites currently being constructed by Sierra Nevada Corporation.
The agreement schedules the launches for sometime between the second quarter of 2013 and the second quarter of 2014, subject to normal scheduling changes.
This is a strong endorsement by Orbcomm of SpaceX’s Falcon 9 rocket, despite the engine problem which prevented an Orbcomm prototype satellite from reaching its correct orbit on the last Falcon 9 launch. Also, note that Sierra Nevada is building the satellites, thereby giving that company a firm foundations while it also builds its Dream Chaser manned spacecraft.
A United Kingdom effort to drill down almost two miles to reach buired Lake Ellsworth in Antarctica has been abandoned.
A United Kingdom effort to drill down almost two miles to reach buired Lake Ellsworth in Antarctica has been abandoned.
The article doesn’t mention the failure of a boiler two weeks ago, which from their website apparently delayed drilling until this week.
A United Kingdom effort to drill down almost two miles to reach buired Lake Ellsworth in Antarctica has been abandoned.
The article doesn’t mention the failure of a boiler two weeks ago, which from their website apparently delayed drilling until this week.
SpaceX’s Grasshopper rocket successfully did a vertical take off and landing to a height of 130 feet last week.
SpaceX’s Grasshopper rocket successfully did a vertical take off and landing to a height of 130 feet last week. With video.
This is very cool engineering, but I remain skeptical any first stage rocket could carry enough fuel to both return to Earth vertically and also provide its payload enough thrust to get into orbit.
SpaceX’s Grasshopper rocket successfully did a vertical take off and landing to a height of 130 feet last week. With video.
This is very cool engineering, but I remain skeptical any first stage rocket could carry enough fuel to both return to Earth vertically and also provide its payload enough thrust to get into orbit.
What the future was supposed to be like
What the future was supposed to be like.
What the future was supposed to be like.
The Soyuz capsule with ISS’s new crew of three astronauts has successfully docked with the station.
The Soyuz capsule with ISS’s new crew of three astronauts has successfully docked with the station.
The Soyuz capsule with ISS’s new crew of three astronauts has successfully docked with the station.
NASA successfully completed a set of tests of the parachutes for the Orion capsule on Thursday.
NASA successfully completed a set of tests of the parachutes for the Orion capsule on Thursday.
NASA successfully completed a set of tests of the parachutes for the Orion capsule on Thursday.
More details on Virgin Galactic’s first glide test of SpaceShipTwo with its rocket motor attached.
More details on Virgin Galactic’s first glide test of SpaceShipTwo with its rocket motor attached.
More details on Virgin Galactic’s first glide test of SpaceShipTwo with its rocket motor attached.
The recent youtube video showing an eagle swooping down to grab a toddler was faked.
The uncertainty of imagery: The recent youtube viral video showing an eagle swooping down to grab a toddler was faked.
Based on this example alone, it is becoming increasingly possible to fake a news story. You better have multiple sources on any strange event or else take it with a grain of salt.
The uncertainty of imagery: The recent youtube viral video showing an eagle swooping down to grab a toddler was faked.
Based on this example alone, it is becoming increasingly possible to fake a news story. You better have multiple sources on any strange event or else take it with a grain of salt.
SpaceShipTwo has successfully completed its first glide test flight with its rocket motor attached.
SpaceShipTwo has successfully completed its first glide test flight with its rocket motor attached.
Now that they know the spacecraft glides properly with the extra weight of the rocket, this sets the stage for the first powered flight.
SpaceShipTwo has successfully completed its first glide test flight with its rocket motor attached.
Now that they know the spacecraft glides properly with the extra weight of the rocket, this sets the stage for the first powered flight.
A laser defense system capable of destroying missiles from a distance.
A laser defense system capable of destroying missiles from a distance. With video.
A laser defense system capable of destroying missiles from a distance. With video.
Russia today successfully launched a new three man crew toward ISS.
Russia today successfully launched a new three man crew toward ISS.
Russia today successfully launched a new three man crew toward ISS.
The science team for Cassini has released a spectacular mosiac of Saturn and its rings, backlit by the Sun.
The science team for Cassini has released a spectacular mosiac of Saturn and its rings, backlit by the Sun.
The science team for Cassini has released a spectacular mosiac of Saturn and its rings, backlit by the Sun.
NASA has named the impact site where the two GRAIL spacecraft hit the Moon today after American astronaut Sally Ride.
NASA has named the impact site where the two GRAIL spacecraft hit the Moon today after American astronaut Sally Ride.
Though this is a nice gesture, the entire public relations campaign surrounding the GRAIL impact today has been one of the more overhyped exercises at NASA. The impact is going to provide very little new science, and is necessary because no lunar orbit is stable and the spacecraft will eventually crash into the Moon anyway. Better to do it under controlled circumstances. To make such a big deal about it however is hardly interesting, especially since this has been done repeatedly by practically every lunar orbiter.
NASA has named the impact site where the two GRAIL spacecraft hit the Moon today after American astronaut Sally Ride.
Though this is a nice gesture, the entire public relations campaign surrounding the GRAIL impact today has been one of the more overhyped exercises at NASA. The impact is going to provide very little new science, and is necessary because no lunar orbit is stable and the spacecraft will eventually crash into the Moon anyway. Better to do it under controlled circumstances. To make such a big deal about it however is hardly interesting, especially since this has been done repeatedly by practically every lunar orbiter.
Orbital Sciences has begun testing the loading and unloading of fuel for the first stage of its Antares rocket at Wallops Island, Maryland.
Orbital Sciences has begun testing the loading and unloading of fuel for the first stage of its Antares rocket at Wallops Island, Maryland.
This is good, but the questions about the Antares’ system for ejecting its shroud after launch still remain, threatening the rest of the schedule.
Orbital Sciences has begun testing the loading and unloading of fuel for the first stage of its Antares rocket at Wallops Island, Maryland.
This is good, but the questions about the Antares’ system for ejecting its shroud after launch still remain, threatening the rest of the schedule.
An attempt to drill down into another buried lake in Antarctica, this time by Great Britain, has encountered serious technical problems because of a failed boiler.
An attempt to drill down into another buried lake in Antarctica, this time by Great Britain, has encountered serious technical problems because of a failed boiler.
An attempt to drill down into another buried lake in Antarctica, this time by Great Britain, has encountered serious technical problems because of a failed boiler.
NASA used Orbital Sciences’ Taurus 2 rocket for the failed launch of its Glory climate satellite in 2011, even though the agency knew the company had not fixed the problem that caused the loss of the Orbiting Carbon Observatory in 2009.
NASA used Orbital Sciences’ Taurus XL rocket for the failed launch of its Glory climate satellite in 2011, even though the agency knew the company had not fixed the problem that caused the loss of the Orbiting Carbon Observatory in 2009.
The investigators believed there was as much as a 50% chance the faulty component — a fairing separation system for ejecting the protective shroud that covered the satellite during launch — would fail again. Sadly, it did, destroying Glory. More significant for the future, however is this:
Other Orbital vehicles, including the air-launched Pegasus and a new Antares rocket, use a version of the same fairing separation system that is most likely responsible for the combined $700 million loss of two key climate-study satellites. Orbital’s original name for Antares was Taurus II.
So far, NASA has not accepted the Antares shroud-separation configuration for operational flights. Dulles, Va.-based Orbital says it has made a number of changes to its frangible joint fairing separation system in the wake of the Glory launch failure, including modifications to the frangible rail used on Antares. The company is developing that rocket under NASA’s Commercial Orbital Transportation Services (COTS) program to carry cargo to the International Space Station (ISS).
If NASA isn’t satisfied with Orbital’s design changes to this system, it could significantly delay the launch of Cygnus and Antares to ISS.
Update: I had mistakenly referred to the Taurus 2 in the first sentence when the rocket used to launch Glory and OCO was the Taurus XL. This is now corrected.
NASA used Orbital Sciences’ Taurus XL rocket for the failed launch of its Glory climate satellite in 2011, even though the agency knew the company had not fixed the problem that caused the loss of the Orbiting Carbon Observatory in 2009.
The investigators believed there was as much as a 50% chance the faulty component — a fairing separation system for ejecting the protective shroud that covered the satellite during launch — would fail again. Sadly, it did, destroying Glory. More significant for the future, however is this:
Other Orbital vehicles, including the air-launched Pegasus and a new Antares rocket, use a version of the same fairing separation system that is most likely responsible for the combined $700 million loss of two key climate-study satellites. Orbital’s original name for Antares was Taurus II.
So far, NASA has not accepted the Antares shroud-separation configuration for operational flights. Dulles, Va.-based Orbital says it has made a number of changes to its frangible joint fairing separation system in the wake of the Glory launch failure, including modifications to the frangible rail used on Antares. The company is developing that rocket under NASA’s Commercial Orbital Transportation Services (COTS) program to carry cargo to the International Space Station (ISS).
If NASA isn’t satisfied with Orbital’s design changes to this system, it could significantly delay the launch of Cygnus and Antares to ISS.
Update: I had mistakenly referred to the Taurus 2 in the first sentence when the rocket used to launch Glory and OCO was the Taurus XL. This is now corrected.
China’s Chang’e 2 lunar probe, now out of lunar orbit, did a fly-by of the 3 mile wide asteroid Toutatis as it zipped past the Earth last week, resulting in some spectacular images.
China’s Chang’e 2 lunar probe, now out of lunar orbit, did a fly-by of the 3 mile wide asteroid Toutatis as it zipped past the Earth last week, resulting in some spectacular images.
Launched on October 1, 2010, Chang’e 2 orbited the Moon for 8 months before being redirected last year to the L2 Lagrange point, roughly a million miles on the side of Earth opposite the Sun. But when it left L2 last April, Western observers suspected the spacecraft was heading deeper interplanetary space. It didn’t take long to realize that Chang’e 2 was bound for Toutatis.
This is an example of a very smart re-use of a space probe.
By the way, the first fly-by of another planet took place fifty years ago this week.
China’s Chang’e 2 lunar probe, now out of lunar orbit, did a fly-by of the 3 mile wide asteroid Toutatis as it zipped past the Earth last week, resulting in some spectacular images.
Launched on October 1, 2010, Chang’e 2 orbited the Moon for 8 months before being redirected last year to the L2 Lagrange point, roughly a million miles on the side of Earth opposite the Sun. But when it left L2 last April, Western observers suspected the spacecraft was heading deeper interplanetary space. It didn’t take long to realize that Chang’e 2 was bound for Toutatis.
This is an example of a very smart re-use of a space probe.
By the way, the first fly-by of another planet took place fifty years ago this week.
The satellite that North Korea launched early Wednesday appears to be tumbling out of control, according to unnamed U.S. officials.
The satellite that North Korea launched early Wednesday appears to be tumbling out of control, according to unnamed U.S. officials.
The Defense Department does have the capability to detect a tumbling satellite, especially if its solar panels are visible, though I must emphasize that the information here is so vague it hardly means anything. Regardless, the real issue here is not that North Korea put a working satellite into orbit, but that it now has the rocket capability to put anything into orbit. For us this is not a good thing: A rogue nation that is trying to build nuclear weapons that is also officially still at war with our ally South Korea now has this capability.
The satellite that North Korea launched early Wednesday appears to be tumbling out of control, according to unnamed U.S. officials.
The Defense Department does have the capability to detect a tumbling satellite, especially if its solar panels are visible, though I must emphasize that the information here is so vague it hardly means anything. Regardless, the real issue here is not that North Korea put a working satellite into orbit, but that it now has the rocket capability to put anything into orbit. For us this is not a good thing: A rogue nation that is trying to build nuclear weapons that is also officially still at war with our ally South Korea now has this capability.
SpaceX has pinpointed the cause of the Falcon 9 engine shutdown during its October 7 Dragon launch.
SpaceX has pinpointed the cause of the Falcon 9 engine shutdown during its October 7 Dragon launch.
At the moment, however, they are not telling anyone what that cause is. They are telling us that the next Dragon launch is going to happen in late February or early March, which is slightly earlier than previous reports.
SpaceX has pinpointed the cause of the Falcon 9 engine shutdown during its October 7 Dragon launch.
At the moment, however, they are not telling anyone what that cause is. They are telling us that the next Dragon launch is going to happen in late February or early March, which is slightly earlier than previous reports.
A new New York skyscraper — the largest residential building in the world — has won the top award for 2011 for its unusual undulating facade.
A new New York skyscraper — the largest residential building in the world — has won the top award for 2011 for its unusual undulating facade.
It is worth a look, as the building is quite strange-looking and actually stands out in the New York skyline, something you would think would be difficult for a new skyscraper to do.
A new New York skyscraper — the largest residential building in the world — has won the top award for 2011 for its unusual undulating facade.
It is worth a look, as the building is quite strange-looking and actually stands out in the New York skyline, something you would think would be difficult for a new skyscraper to do.
North Korea launched its rocket today, despite indications earlier in the week that they were delaying the launch due to technical problems.
North Korea launched its rocket early Wednesday, despite indications earlier in the week that they were delaying the launch due to technical problems.
It appears those “technical problems” were a feint to distract everyone just prior to launch. Based on radar data it also appears the rocket did put an object into orbit.
North Korea launched its rocket early Wednesday, despite indications earlier in the week that they were delaying the launch due to technical problems.
It appears those “technical problems” were a feint to distract everyone just prior to launch. Based on radar data it also appears the rocket did put an object into orbit.
The first X-37B to fly in space was successfully placed in orbit today for the second time.
The first X-37B to fly in space was successfully placed in orbit today for the second time.
The first X-37B to fly in space was successfully placed in orbit today for the second time.
North Korea, having postponed the launch for technical reasons, has apparently begun removing the rocket from the launchpad.
North Korea, having postponed the launch for technical reasons, has apparently begun removing the rocket from the launchpad.
North Korea, having postponed the launch for technical reasons, has apparently begun removing the rocket from the launchpad.
A design problem in Curiosity’s drill makes it a threat for shorting out the electronics of the entire rover at some point in the future.
Oy. A design problem in Curiosity’s drill makes it a threat to short out the electronics of the entire rover at some point in the future.
Oy. A design problem in Curiosity’s drill makes it a threat to short out the electronics of the entire rover at some point in the future.
Glide tests of Sierra Nevada’s Dream Chaser shuttle are now scheduled to begin in the first quarter of 2013.
Glide tests of Sierra Nevada’s Dream Chaser shuttle are now scheduled to begin in the first quarter of 2013.
The vehicle they will be flying is only a prototype built expressly for these unmanned tests. A separate flight model is under construction and will be used for later manned suborbital tests, followed by a third vehicle built for orbital flights.
Glide tests of Sierra Nevada’s Dream Chaser shuttle are now scheduled to begin in the first quarter of 2013.
The vehicle they will be flying is only a prototype built expressly for these unmanned tests. A separate flight model is under construction and will be used for later manned suborbital tests, followed by a third vehicle built for orbital flights.
Kazakhstan is considering cancelling the lease that allows Russia to use the launch facilities in Baikonur.
More bad news for Russia: Kazakhstan is considering cancelling the lease that allows Russia to use the launch facilities in Baikonur.
More bad news for Russia: Kazakhstan is considering cancelling the lease that allows Russia to use the launch facilities in Baikonur.