Curiosity is easing out of safe mode as engineers switch computers.
Curiosity is easing out of safe mode as engineers switch computers.
Curiosity is easing out of safe mode as engineers switch computers.
Tag: engineering
Curiosity is easing out of safe mode as engineers switch computers.
New research concludes that it was a static electric spark that set fire to the Hindenberg in 1937.
New research concludes that it was a static electric spark that set fire to the Hindenberg in 1937.
New research concludes that it was a static electric spark that set fire to the Hindenberg in 1937.
Dragon has been successfully berthed with ISS.
Dragon has successfully berthed with ISS.
The naysayers will focus on the thruster problems on Friday. The yaysayers will focus on the fix and berthing today. The bottom line, however, is that this mission once again proves that SpaceX is a real player in the space business. Every other company has to match its achievements, most especially in price. The result will be the eventually lowering in the cost to low Earth orbit, which will then make all things possible.
And in fact, we are already seeing this, with the appearance of many new private companies or organizations, proposing all sorts of new space efforts, such as mining asteroids or sending people to Mars. The lower cost allows dreamers to consider their wild new ideas more doable. And they then go ahead and try to do it.
Dragon has successfully berthed with ISS.
The naysayers will focus on the thruster problems on Friday. The yaysayers will focus on the fix and berthing today. The bottom line, however, is that this mission once again proves that SpaceX is a real player in the space business. Every other company has to match its achievements, most especially in price. The result will be the eventually lowering in the cost to low Earth orbit, which will then make all things possible.
And in fact, we are already seeing this, with the appearance of many new private companies or organizations, proposing all sorts of new space efforts, such as mining asteroids or sending people to Mars. The lower cost allows dreamers to consider their wild new ideas more doable. And they then go ahead and try to do it.
After reviwing the results from the Antares hot fire on February 22, Orbital Sciences is now planning the first launch of the Antares rocket in April.
The competition heats up: After reviewing the results from the Antares hot fire on February 22, Orbital Sciences is now planning the first launch of the Antares rocket in April.
The competition heats up: After reviewing the results from the Antares hot fire on February 22, Orbital Sciences is now planning the first launch of the Antares rocket in April.
SpaceX has been given the go-ahead to have the Dragon capsule rendezvous with ISS on Sunday.
SpaceX has been given the go-ahead to have the Dragon capsule rendezvous with ISS on Sunday.
SpaceX has been given the go-ahead to have the Dragon capsule rendezvous with ISS on Sunday.
SpaceX has announced that they now have all of Dragon’s thrusters operating and are go for docking with ISS.
SpaceX has announced that they now have all of Dragon’s thrusters operating and are go for docking with ISS.
They have not announced when the docking will occur, but with the solar panels operating the capsule can function in orbit for a considerable time, giving them breathing room. And time will be necessary as both NASA and the Russians are nervous about letting any spacecraft approach ISS and will want a good number of tests to make sure all is well. The Russians are especially nervous, since they had the unfortunate experience of several collisions when they operated their space station Mir.
SpaceX has announced that they now have all of Dragon’s thrusters operating and are go for docking with ISS.
They have not announced when the docking will occur, but with the solar panels operating the capsule can function in orbit for a considerable time, giving them breathing room. And time will be necessary as both NASA and the Russians are nervous about letting any spacecraft approach ISS and will want a good number of tests to make sure all is well. The Russians are especially nervous, since they had the unfortunate experience of several collisions when they operated their space station Mir.
Dragon’s docking with ISS will not happen on Saturday as originally scheduled due to the problems with the capsule’s thrusters.
Dragon’s docking with ISS will not happen on Saturday as originally scheduled due to the problems with the capsule’s thrusters.
Dragon’s docking with ISS will not happen on Saturday as originally scheduled due to the problems with the capsule’s thrusters.
Corrupt memory in Curiosity’s A computer system has forced engineers to switch to the rover’s back-up computer.
Corrupt memory in Curiosity’s A computer system has forced engineers to switch to the rover’s back-up computer.
The problem came to light Wednesday morning on Mars when flight controllers at the Jet Propulsion Laboratory in Pasadena, Calif., noticed what appeared to be memory corruption in the computer’s solid-state memory system. The flight software was not recording new data or playing back data already recorded. Instead, it was only sending back real-time telemetry. Later in the day, during a communications session using NASA’s Mars Reconnaissance Orbiter, telemetry from Curiosity indicated the corrupted memory was still present. In addition, Cook said, flight controllers saw the computer had not completed several pre-planned activities.
At that point, the computer was expected to put itself to sleep for an hour or so and then to wake up for a communications session with NASA’s Odyssey orbiter. “It was after that second overflight that we got some more information saying hey, the memory is still corrupted and oh by the way, I didn’t go to sleep when I was supposed to, I stayed awake,” Cook said.
The next communications session came late Wednesday night Earth time, between 10:30 p.m. and midnight at the Jet Propulsion Laboratory. The rover’s computer was still awake and engineers decided to switch over to the B-side system.
The engineers suspect the problem was caused by a cosmic ray hit, and can be fixed by rebooting the computer.
Corrupt memory in Curiosity’s A computer system has forced engineers to switch to the rover’s back-up computer.
The problem came to light Wednesday morning on Mars when flight controllers at the Jet Propulsion Laboratory in Pasadena, Calif., noticed what appeared to be memory corruption in the computer’s solid-state memory system. The flight software was not recording new data or playing back data already recorded. Instead, it was only sending back real-time telemetry. Later in the day, during a communications session using NASA’s Mars Reconnaissance Orbiter, telemetry from Curiosity indicated the corrupted memory was still present. In addition, Cook said, flight controllers saw the computer had not completed several pre-planned activities.
At that point, the computer was expected to put itself to sleep for an hour or so and then to wake up for a communications session with NASA’s Odyssey orbiter. “It was after that second overflight that we got some more information saying hey, the memory is still corrupted and oh by the way, I didn’t go to sleep when I was supposed to, I stayed awake,” Cook said.
The next communications session came late Wednesday night Earth time, between 10:30 p.m. and midnight at the Jet Propulsion Laboratory. The rover’s computer was still awake and engineers decided to switch over to the B-side system.
The engineers suspect the problem was caused by a cosmic ray hit, and can be fixed by rebooting the computer.
After successfully reaching orbit, there appears to be a problem with the Dragon capsule.
Bad news: After successfully reaching orbit, there appears to be a problem with the Dragon capsule.
They have not yet released any information about what happened. The link above says that it appears to be related with the communications link, but NASA and SpaceX have as yet released no information other than to say they will hold a press conference in a few hours.
UPDATE: it appears the problem is with Dragon’s thrusters. Engineers have delayed the deployment the capsule’s solar panels while they try to get the thrusters activated. See the second link above.
Bad news: After successfully reaching orbit, there appears to be a problem with the Dragon capsule.
They have not yet released any information about what happened. The link above says that it appears to be related with the communications link, but NASA and SpaceX have as yet released no information other than to say they will hold a press conference in a few hours.
UPDATE: it appears the problem is with Dragon’s thrusters. Engineers have delayed the deployment the capsule’s solar panels while they try to get the thrusters activated. See the second link above.
China’s next manned mission is now set for this summer.
The competition heats up: China’s next manned mission is now set for this summer.
The Shenzhou 10 spacecraft will take flight sometime between June and August, the program said in a statement. It will deliver its crew to the Tiangong 1, where it will spend two weeks conducting tests of the station’s docking system and its systems for supporting life and carrying out scientific work.
The competition heats up: China’s next manned mission is now set for this summer.
The Shenzhou 10 spacecraft will take flight sometime between June and August, the program said in a statement. It will deliver its crew to the Tiangong 1, where it will spend two weeks conducting tests of the station’s docking system and its systems for supporting life and carrying out scientific work.
Dennis Tito, the world’s first space tourist, announced a private effort today to fly the first-ever manned flight around Mars and do it by 2018.
The competition heats up: Dennis Tito, the world’s first space tourist, today announced a private effort to fly the first-ever manned flight around Mars and do it by 2018.
The mission would send a married couple on the 501 day mission to do a fly-by of the red planet and then return to Earth.
The competition heats up: Dennis Tito, the world’s first space tourist, today announced a private effort to fly the first-ever manned flight around Mars and do it by 2018.
The mission would send a married couple on the 501 day mission to do a fly-by of the red planet and then return to Earth.
An investigation of the Sea Launch launch failure on February 2 has pinpointed the failure to faulty parts made in the Ukraine.
An investigation of the Sea Launch launch failure on February 2 has pinpointed the failure to faulty parts made in the Ukraine.
The article is interesting in that it seems to reveal some friction between Russia and Ukraine, with the investigators making it a point to blame the Ukrainian components while specifically saying that “there was nothing wrong with the Russian-made equipment.”
An investigation of the Sea Launch launch failure on February 2 has pinpointed the failure to faulty parts made in the Ukraine.
The article is interesting in that it seems to reveal some friction between Russia and Ukraine, with the investigators making it a point to blame the Ukrainian components while specifically saying that “there was nothing wrong with the Russian-made equipment.”
The world’s largest panoramic image.
The world’s largest panoramic image.
The 320 gigapixel image, taken from the top of the BT Tower in London, comprises 48,640 individual frames which have been collated into a single panorama by a supercomputer. It breaks the previous record set by a 281-gigapixel electron micrograph of a zebrafish embryo taken in 2012.
The world’s largest panoramic image.
The 320 gigapixel image, taken from the top of the BT Tower in London, comprises 48,640 individual frames which have been collated into a single panorama by a supercomputer. It breaks the previous record set by a 281-gigapixel electron micrograph of a zebrafish embryo taken in 2012.
SpaceX has reported that its static fire test today of the Falcon 9 rocket was a success.
The competition heats up: SpaceX has reported that its static fire test today of the Falcon 9 rocket was a success.
The launch of Dragon is now set for Friday.
The competition heats up: SpaceX has reported that its static fire test today of the Falcon 9 rocket was a success.
The launch of Dragon is now set for Friday.
“the worst test” – an engineering flash mob
India successfully launched seven satellites into orbit today on a single launch.
The competition heats up: India successfully launched seven satellites into orbit today on a single launch.
The competition heats up: India successfully launched seven satellites into orbit today on a single launch.
Twenty-three terrifying airport runways.
Twenty-three terrifying airport runways.
And the list doesn’t even include LaGuardia Airport in New York, with its runway in the middle of New York harbor.
Twenty-three terrifying airport runways.
And the list doesn’t even include LaGuardia Airport in New York, with its runway in the middle of New York harbor.
The world’s smallest optical space telescopes to launch on Monday.
The world’s smallest optical space telescopes to launch on Monday.
The world’s smallest optical space telescopes to launch on Monday.
A jetpack that takes off like a plane.
A jetpack that takes off like a plane.
With a name right out of Thunderbirds, Skyflash is, if nothing else, ambitious. The wing, which is worn like a backpack, is designed to take off from the ground and, if successful, will be the smallest twin engined plane ever built.
A jetpack that takes off like a plane.
With a name right out of Thunderbirds, Skyflash is, if nothing else, ambitious. The wing, which is worn like a backpack, is designed to take off from the ground and, if successful, will be the smallest twin engined plane ever built.
The Antares hot fire test of the rocket’s first stage was successfully completed tonight.
The competition heats up: The Antares hot fire test of the rocket’s first stage was successfully completed tonight.
The 29-second hot fire test took place at 6:00 p.m. (EST) on February 22, 2013 at the Mid-Atlantic Regional Spaceport’s (MARS) Pad 0A, which was designed and built over the last several years to accommodate liquid-fuel space launch vehicles. The primary goals of the test were to ensure that the launch complex’s fueling systems and the Antares stage one test article functioned properly in a fully operational environment, that engine ignition and shut down commands operated as designed, and that the dual AJ26 first stage engines and their control systems performed to specifications in the twin-engine configuration. The test included a full propellant loading sequence, launch countdown and engine ignition operation. The pad’s high-volume water deluge system flowed throughout the entire period of the test to protect the pad from damage and for noise suppression.
The first stage will now be prepped for a full scale test launch of Antares, expected in about six weeks. If that is successful, Orbital Sciences will then follow with a flight of the Cygnus capsule to ISS.
The competition heats up: The Antares hot fire test of the rocket’s first stage was successfully completed tonight.
The 29-second hot fire test took place at 6:00 p.m. (EST) on February 22, 2013 at the Mid-Atlantic Regional Spaceport’s (MARS) Pad 0A, which was designed and built over the last several years to accommodate liquid-fuel space launch vehicles. The primary goals of the test were to ensure that the launch complex’s fueling systems and the Antares stage one test article functioned properly in a fully operational environment, that engine ignition and shut down commands operated as designed, and that the dual AJ26 first stage engines and their control systems performed to specifications in the twin-engine configuration. The test included a full propellant loading sequence, launch countdown and engine ignition operation. The pad’s high-volume water deluge system flowed throughout the entire period of the test to protect the pad from damage and for noise suppression.
The first stage will now be prepped for a full scale test launch of Antares, expected in about six weeks. If that is successful, Orbital Sciences will then follow with a flight of the Cygnus capsule to ISS.
Falcon 9 static fire test is now set for Monday.
The Falcon 9 static fire test is now set for Monday.
I’m not sure if this is a reschedule, or the information I posted from previous stories was incorrect. Either way, this test is their standard preparation for Falcon 9’s next launch.
The Falcon 9 static fire test is now set for Monday.
I’m not sure if this is a reschedule, or the information I posted from previous stories was incorrect. Either way, this test is their standard preparation for Falcon 9’s next launch.
An update on Boeing’s CST-100 capsule.
The competition heats up: An update on Boeing’s CST-100 capsule.
The competition heats up: An update on Boeing’s CST-100 capsule.
New data has allowed scientists to lower the chance that the asteroid Apophis will hit the Earth in a future orbit.
New data has allowed scientists to lower the chance that the asteroid Apophis will hit the Earth in a future orbit.
Recent observations from Pan-STARRS PS1 telescope at Haleakala, Hawaii have reduced the current orbital uncertainty by a factor of 5, and radar observations in early 2013 from Goldstone and Arecibo will further improve the knowledge of Apophis’ current position. However, the current knowledge is now precise enough that the uncertainty in predicting the position in 2029 is completely dominated by the so-called Yarkovsky effect, a subtle nongravitational perturbation due to thermal re-radiation of solar energy absorbed by the asteroid. The Yarkovsky effect depends on the asteroid’s size, mass, thermal properties, and critically on the orientation of the asteroid’s spin axis, which is currently unknown. This means that predictions for the 2029 Earth encounter will not improve significantly until these physical and spin characteristics are better determined.
The new report, which does not make use of the 2013 radar measurements, identifies over a dozen keyholes that fall within the range of possible 2029 encounter distances. Notably, the potential impact in 2036 that had previously held the highest probability has been effectively ruled out since its probability has fallen to well below one chance in one million. Indeed only one of the potential impacts has a probability of impact greater than 1-in-a-million; there is a 2-meter wide keyhole that leads to an impact in 2068, with impact odds of about 2.3 in a million.
The second paragraph basically says that the keyholes that might bring Apophis back to Earth are very small, making it unlikely that the asteroid will fly through any one of them in 2029. The first paragraph however notes that it will be impossible to chart the asteroid’s course accurately enough to rule out this possibility until we have more data on the asteroid itself.
New data has allowed scientists to lower the chance that the asteroid Apophis will hit the Earth in a future orbit.
Recent observations from Pan-STARRS PS1 telescope at Haleakala, Hawaii have reduced the current orbital uncertainty by a factor of 5, and radar observations in early 2013 from Goldstone and Arecibo will further improve the knowledge of Apophis’ current position. However, the current knowledge is now precise enough that the uncertainty in predicting the position in 2029 is completely dominated by the so-called Yarkovsky effect, a subtle nongravitational perturbation due to thermal re-radiation of solar energy absorbed by the asteroid. The Yarkovsky effect depends on the asteroid’s size, mass, thermal properties, and critically on the orientation of the asteroid’s spin axis, which is currently unknown. This means that predictions for the 2029 Earth encounter will not improve significantly until these physical and spin characteristics are better determined.
The new report, which does not make use of the 2013 radar measurements, identifies over a dozen keyholes that fall within the range of possible 2029 encounter distances. Notably, the potential impact in 2036 that had previously held the highest probability has been effectively ruled out since its probability has fallen to well below one chance in one million. Indeed only one of the potential impacts has a probability of impact greater than 1-in-a-million; there is a 2-meter wide keyhole that leads to an impact in 2068, with impact odds of about 2.3 in a million.
The second paragraph basically says that the keyholes that might bring Apophis back to Earth are very small, making it unlikely that the asteroid will fly through any one of them in 2029. The first paragraph however notes that it will be impossible to chart the asteroid’s course accurately enough to rule out this possibility until we have more data on the asteroid itself.
There will be hot fire tests on Friday of both the Antares and Falcon 9 rockets.
The competition heats up: There will be hot fire tests on Friday of both the Antares and Falcon 9 rockets.
The competition heats up: There will be hot fire tests on Friday of both the Antares and Falcon 9 rockets.
After a three hour outage NASA has regained communications with ISS.
After a three hour outage NASA has regained communications with ISS.
After a three hour outage NASA has regained communications with ISS.
NASA mission control in Houston has lost all communications with ISS.
NASA mission control in Houston has lost all communications with ISS.
Communications are still possible each orbit for short periods with Moscow.
NASA mission control in Houston has lost all communications with ISS.
Communications are still possible each orbit for short periods with Moscow.
The hotfire test of Antares’ first stage has been rescheduled for Thursday, February 21.
The hotfire test of Antares’ first stage has been rescheduled for Thursday, February 21.
The hotfire test of Antares’ first stage has been rescheduled for Thursday, February 21.
The abandoned calibration targets used by surveillance satellites of the 1960s.
The abandoned calibration targets used by surveillance satellites of the 1960s.
“There are dozens of aerial photo calibration targets across the USA,” the Center for Land Use Interpretation reports, “curious land-based two-dimensional optical artifacts used for the development of aerial photography and aircraft. They were made mostly in the 1950s and 1960s, though some apparently later than that, and many are still in use, though their history is obscure.”
The abandoned calibration targets used by surveillance satellites of the 1960s.
“There are dozens of aerial photo calibration targets across the USA,” the Center for Land Use Interpretation reports, “curious land-based two-dimensional optical artifacts used for the development of aerial photography and aircraft. They were made mostly in the 1950s and 1960s, though some apparently later than that, and many are still in use, though their history is obscure.”
A group of California scientists have proposed a system to vaporize asteroids that threaten Earth.
A group of California scientists have proposed a system to vaporize asteroids that threaten Earth.
In developing the proposal, Lubin and Hughes calculated the requirements and possibilities for DE-STAR systems of several sizes, ranging from a desktop device to one measuring 10 kilometers, or six miles, in diameter. Larger systems were also considered. The larger the system, the greater its capabilities.
For instance, DE-STAR 2 –– at 100 meters in diameter, about the size of the International Space Station –– “could start nudging comets or asteroids out of their orbits,” Hughes said. But DE-STAR 4 –– at 10 kilometers in diameter, about 100 times the size of the ISS –– could deliver 1.4 megatons of energy per day to its target, said Lubin, obliterating an asteroid 500 meters across in one year.
They also propose an even larger system which could “enable interstellar travel.”
A group of California scientists have proposed a system to vaporize asteroids that threaten Earth.
In developing the proposal, Lubin and Hughes calculated the requirements and possibilities for DE-STAR systems of several sizes, ranging from a desktop device to one measuring 10 kilometers, or six miles, in diameter. Larger systems were also considered. The larger the system, the greater its capabilities.
For instance, DE-STAR 2 –– at 100 meters in diameter, about the size of the International Space Station –– “could start nudging comets or asteroids out of their orbits,” Hughes said. But DE-STAR 4 –– at 10 kilometers in diameter, about 100 times the size of the ISS –– could deliver 1.4 megatons of energy per day to its target, said Lubin, obliterating an asteroid 500 meters across in one year.
They also propose an even larger system which could “enable interstellar travel.”
The next flight of Dragon to ISS has been set for March 1.
The next flight of Dragon to ISS has been set for March 1.
The next flight of Dragon to ISS has been set for March 1.