Buses vs high speed trains: the buses win
Buses vs high speed trains: the buses win.
Buses vs high speed trains: the buses win.
Tag: engineering
Buses vs high speed trains: the buses win
Blue Origin to do a test flight tomorrow
Blue Origin, one of the four commercial companies NASA hopes to use to get crew up and down from ISS, plans to do a test flight tomorrow. Hat tip to SpaceRef.
This company, founded by Jeff Bezos of amazon.com, has generally released very little information about their effort.
Blue Origin, one of the four commercial companies NASA hopes to use to get crew up and down from ISS, plans to do a test flight tomorrow. Hat tip to SpaceRef.
This company, founded by Jeff Bezos of amazon.com, has generally released very little information about their effort.
Bigelow in negotiations to supply privately-built modules to ISS
Bigelow Aerospace is in negotiations with both NASA and Japan to supply ISS with privately-built modules
The module could be rented out as an ISS storage unit, making the station less dependent on frequent resupply flights, says Hiroshi Kikuchi of JAMSS. To show that the modules are capable of safe, crewed operation, Bigelow is also negotiating with NASA to attach one to a US-owned ISS module.
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Bigelow Aerospace is in negotiations with both NASA and Japan to supply ISS with privately-built modules
The module could be rented out as an ISS storage unit, making the station less dependent on frequent resupply flights, says Hiroshi Kikuchi of JAMSS. To show that the modules are capable of safe, crewed operation, Bigelow is also negotiating with NASA to attach one to a US-owned ISS module.
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Craters, craters, everywhere
Below the fold are two images released today, one from Dawn at Vesta and the other from Messenger at Mercury. What makes them interesting to me is that, though the surfaces of both Vesta and Mercury are crater-packed, there are definitely distinct differences between them that one can spot if you look closely, all highlighting the fundamentally different environments of both worlds.
First, the Vesta photograph. The image looks out past the asteroid’s horizon, showing clearly that this dwarf planet is not spherical, with the south pole depression that puzzles scientists just on the planet’s limb. The parallel long deep grooves that are associated with this depression can be seen on the right. Notice also that the inside walls of all the craters slope downward in a very shallow manner. This gives the impression that the impacts that formed these craters smashed into an almost beachlike sandy surface. Note too the that the center of some craters have what appear to be flat small “ponds,” a phenomenon seen by the spacecraft NEAR when it orbited the asteroid Eros. These ponds are not liquid, but are actually made up of fine-grained particles that settle in the hollows of the asteroid.
» Read more
NASA announces awards for three technology demonstration space missions
NASA has announced three awards for technology demonstration space missions, all set to fly within four years. More details here.
The three missions are:
- A solar sail demonstration mission, flying a sail 38 by 38 meter sail.
- A demonstration of in-space laser/optical communications technologies.
- The use of a high-precision atomic clock in space.
I especially like the solar sail mission because of its long range possibilities, though the other technologies would probably be put to practical use more quickly.
NASA has announced three awards for technology demonstration space missions, all set to fly within four years. More details here.
The three missions are:
- A solar sail demonstration mission, flying a sail 38 by 38 meter sail.
- A demonstration of in-space laser/optical communications technologies.
- The use of a high-precision atomic clock in space.
I especially like the solar sail mission because of its long range possibilities, though the other technologies would probably be put to practical use more quickly.
Bringing the Delta 2 back to launch unmanned science probes
Rocket shortage: NASA is reconsidering the Delta 2 rocket as a vehicle to launch its unmanned science satellites.
Rocket shortage: NASA is reconsidering the Delta 2 rocket as a vehicle to launch its unmanned science satellites.
The new commercial space companies question NASA contracting policies
The new commercial space companies are challenging NASA’s new contracting policy.
The article covers the conflict that I described in this post, whereby NASA is abandoning the more flexible contracting approach used for the commercial cargo contracts of SpaceX and Orbital Sciences and going instead with the contracting system it used for all past NASA subcontracts.
The article is errs badly when it calls the new contracting approach that NASA wants to use “non-traditional.” It is instead the way NASA has been doing things for decades, whereby the agency takes full control of everything and requires contractors to fill out so much paperwork that the costs double and triple.
The new commercial space companies are challenging NASA’s new contracting policy.
The article covers the conflict that I described in this post, whereby NASA is abandoning the more flexible contracting approach used for the commercial cargo contracts of SpaceX and Orbital Sciences and going instead with the contracting system it used for all past NASA subcontracts.
The article is errs badly when it calls the new contracting approach that NASA wants to use “non-traditional.” It is instead the way NASA has been doing things for decades, whereby the agency takes full control of everything and requires contractors to fill out so much paperwork that the costs double and triple.
Europe and Russia talk of joint manned mission to Mars
Europe and Russia talk of joint manned mission to Mars.
I’m not sure how seriously to take this story, though its implications are intriguing regardless. More than any other country, Russia knows how to build the kind of spaceship necessary for the journey. What Europe will contribute more than anything else would be money.
Europe and Russia talk of joint manned mission to Mars.
I’m not sure how seriously to take this story, though its implications are intriguing regardless. More than any other country, Russia knows how to build the kind of spaceship necessary for the journey. What Europe will contribute more than anything else would be money.
The real inventor of the telegraph
An evening pause: In honor of the 100th anniversary of the sending of the first round-the-world telegram on August 20, 1911, here is the story of the real inventor of the telegraph. And it ain’t what you think.
New images from Opportunity
Opportunity begins exploring the rim of Endeavour Crater, taking a bunch of new images . I especially like this one, of which I’ve posted a cropped scaled-down version below. The image looks across the 13-mile-wide Endeavour Crater to its far rim on the horizon. Note the haze. Mars very clearly has an atmosphere, even though it is far thinner than Earth’s. In the foreground are scattered rocks, ejecta produced from the impact that formed a smaller nearby crater now named Opportunity Crater.
Some results from the HTV-2 hypersonic flight
Some results from the HTV-2 hypersonic flight: the glider flew successfully for about three minutes at 20 times the speed of sound.
Fixed the stupid error. The speed of SOUND is of course correct. Sorry for the lapse in thought.
Some results from the HTV-2 hypersonic flight: the glider flew successfully for about three minutes at 20 times the speed of sound.
Fixed the stupid error. The speed of SOUND is of course correct. Sorry for the lapse in thought.
A Chinese launch failure today
Another rocket launch failure today, this time by the Chinese.
Another rocket launch failure today, this time by the Chinese.
Space Boat: A Nautical Mission to an Alien Sea
The Titan Mare Explorer: A nautical mission to an alien sea.
If [NASA] green-lights the mission, the capsule will lift off in 2016. By 2023, TiME will be about 800 million miles away in Titan’s north-polar region, home to its biggest lakes and seas. The capsule will take photographs, collect meteorological data, measure depth, and analyze samples. TiME will have no means of propulsion once it is on Titan, so it will float, carried by breezes across the sea’s surface. Then, by the mid-2020s, it will enter a decade-long winter of darkness as the moon’s orbit takes it to the dark side of Saturn, away from the sun and communication. It won’t have a line of sight to Earth to beam back more data until 2035.
The Titan Mare Explorer: A nautical mission to an alien sea.
If [NASA] green-lights the mission, the capsule will lift off in 2016. By 2023, TiME will be about 800 million miles away in Titan’s north-polar region, home to its biggest lakes and seas. The capsule will take photographs, collect meteorological data, measure depth, and analyze samples. TiME will have no means of propulsion once it is on Titan, so it will float, carried by breezes across the sea’s surface. Then, by the mid-2020s, it will enter a decade-long winter of darkness as the moon’s orbit takes it to the dark side of Saturn, away from the sun and communication. It won’t have a line of sight to Earth to beam back more data until 2035.
Using a solar sail to deflect an earth-destroying asteroid
In a paper published today on the Los Alamos astro-ph preprint website, two Chinese scientists have proposed using a solar sail for deflecting any asteroid that happens to be aimed at the earth. The diagram to the right is their simulated mission to impact the asteroid Apophis, which will pass close to the earth in 2029 and — depending on whether that flyby puts it through a very small 600 meter-wide mathematical “keyhole” — could then return in 2036 on a collision course.
The idea is to use the sail to slow the spacecraft down enough so that it starts to fall towards the sun. The sail is then used to maneuver it into a retrograde orbit. When it impacts the asteroid the impact will therefore be similar to a head-on collision, thereby imputing the most energy in the least amount of time with the least amount of rocket fuel. In their Apophis simulation, a mission, weighing only 10 kilograms (about 22 pounds), launched around 2025, and hitting the asteroid in this manner in 2026, would deflect its flyby in 2029 enough to guarantee it will not fly through the “keyhole” and therefore eliminate any chance of it hitting the earth in 2036.
Obviously many questions must be answered before such a mission should fly.
» Read more
Two stories about a possible tourist flight around the moon
Fly me to the moon! Two stories today (here and here) from Russia about a possible tourist flight around the moon by 2016-2017.
Fly me to the moon! Two stories today (here and here) from Russia about a possible tourist flight around the moon by 2016-2017.
American manned space: dependent on the Russians in more ways than you think
American manned space: dependent on the Russians in more ways than you think.
As commentators from around the country gnash their teeth at U.S. dependence upon Russia to move cargo and astronauts to the mostly U.S. built/funded International Space Station (ISS), they’ve missed the bigger boat: With one exception, all the commercial spaceflight offerings currently in the works have Soviet or Russian engines as a key part of the rockets involved.
American manned space: dependent on the Russians in more ways than you think.
As commentators from around the country gnash their teeth at U.S. dependence upon Russia to move cargo and astronauts to the mostly U.S. built/funded International Space Station (ISS), they’ve missed the bigger boat: With one exception, all the commercial spaceflight offerings currently in the works have Soviet or Russian engines as a key part of the rockets involved.
All systems go on Juno
Things are so good on Juno ten days after launch that mission controllers have canceled a rocket burn to adjust the spacecraft’s course.
Things are so good on Juno ten days after launch that mission controllers have canceled a rocket burn to adjust the spacecraft’s course.
Russians to display new rocket and manned spacecraft at international air show today
Russians to display a new rocket and manned spacecraft design at an international air show in Russia today.
Russians to display a new rocket and manned spacecraft design at an international air show in Russia today.
Saving a failed orbiting satellite with engineering
Saving a failed orbiting satellite with engineering.
Saving a failed orbiting satellite with engineering.
America’s first jet
A living room electon microscope
Thirty years ago IBM introduced its first pc
Another anniversary: Thirty years ago today IBM introduced its first PC.
Another anniversary: Thirty years ago today IBM introduced its first PC.
Some questions about today’s hypersonic test flight
Here are some additional stories describing today’s test flight of the Hypersonic Test Vehicle.
- Los Angeles Times: Falcon hypersonic vehicle test flight fails
- Aviation Week: Telemetry Lost During Hypersonic Test Flight
- DARPA: HTV-2 collects unique data during several phases of second flight
I have several questions, and no answers:
Contact quickly lost during third test flight of hypersonic plane
Contact was quickly lost today soon after a hypersonic glider was released by its rocket launcher during a test flight. More here.
Contact was quickly lost today soon after a hypersonic glider was released by its rocket launcher during a test flight. More here.
Japan revises its tsunami warning system following March earthquake/tsunami
Japan has revised its tsunami warning system following the March 11 earthquake/tsunami.
Japan has revised its tsunami warning system following the March 11 earthquake/tsunami.
A government that kills
The state of the Himalayan glaciers
A new study of the glaciers of the Himalayas by the Indian Space Research Organization and the Geological Survey of India has found that, based on satellite data, 2184 were retreating, 435 were advancing, and 148 showed no change.
It is refreshing that the scientists and politicians involved in India refused to cite global warming as a cause, referring instead to the “natural cyclic process”. As India’s former environment minister Jairam Ramesh noted, “There is no doubt that the general health of the Himalayan glaciers is worsening, but the truth is incredibly complex.”
A new study of the glaciers of the Himalayas by the Indian Space Research Organization and the Geological Survey of India has found that, based on satellite data, 2184 were retreating, 435 were advancing, and 148 showed no change.
It is refreshing that the scientists and politicians involved in India refused to cite global warming as a cause, referring instead to the “natural cyclic process”. As India’s former environment minister Jairam Ramesh noted, “There is no doubt that the general health of the Himalayan glaciers is worsening, but the truth is incredibly complex.”
Endeavour Crater at last!
The science team for the rover Opportunity have released their first image taken from the rim of Endeavour Crater.
Since this picture looks south from Spirit Point less than a football field’s distance from the rim, it appears to look into the crater, the mountains on the right being the crater’s rim. What looks like a debris field running across the center of the image looks to me to be a combination of exposed patches of bedrock and boulders on the plateau above the rim. For the scientists, those boulders will be the prime research targets, as they are possibly ejecta produced at crater impact and could therefore be material thrown out from deep within the Martian crust.
A Department of Innovation logo that can’t work
You can’t make this stuff up: Michelle Malkin points out that the logo created by Smithsonian’s Department of Innovation shows a gear arrangement that simply can’t function in the real world.
Check out the logo. 3 interlocking gears arranged in this fashion will not move in any direction. They are essentially locked in place. Which when you think about it, is a perfect analogy of today’s government!
The comments on the Department of Innovation’s own webpage are hilarious as well:
Perhaps this should be the new logo for Congress….since no motion could come from this arrangement.
You can’t make this stuff up: Michelle Malkin points out that the logo created by Smithsonian’s Department of Innovation shows a gear arrangement that simply can’t function in the real world.
Check out the logo. 3 interlocking gears arranged in this fashion will not move in any direction. They are essentially locked in place. Which when you think about it, is a perfect analogy of today’s government!
The comments on the Department of Innovation’s own webpage are hilarious as well:
Perhaps this should be the new logo for Congress….since no motion could come from this arrangement.
Boeing rolls out 787 Dreamliner after years of delay
Boeing unveiled its 787 Dreamliner airplane on Saturday after years of delay.
Boeing unveiled its 787 Dreamliner airplane on Saturday after years of delay.