How to turn an American spacecraft ferrying astronauts to ISS serve as a lifeboat as well.
A very interesting read, as it outlines the specific technical problems faced by engineers that one wouldn’t normally consider. The capsule has to be able to remain functional and reliable after months in orbit, but it also has to become functional at a moment’s notice, should an emergency happen.
The creation in the lab of an as yet unnamed superheavy element adds weight to the theory that there might exist even heavier elements that are stable in nature.
The scientists did not observe element 117 directly. Instead, they searched for its daughter products after it radioactively decayed by emitting alpha particles—helium nuclei with two protons and two neutrons. “The heavy nuclei makes an alpha decay to produce element 115, and this also decays by alpha decay,” says Jadambaa Khuyagbaatar of GSI, lead author of a paper reporting the results published on 1 May in Physical Review Letters.
After a few more steps in this decay chain, one of the nuclei produced is the isotope lawrencium 266—a nucleus with 103 protons and 163 neutrons that had never been seen before. Previously known isotopes of lawrencium have fewer neutrons, and are less stable. This novel species, however, has an astonishingly long half-life of 11 hours, making it one of the longest-lived superheavy isotopes known to date. “Perhaps we are at the shore of the island of stability,” Düllmann says.
If these superheavy elements could be created, they would be the stuff of science fiction. They might have properties that we would find extremely useful.
The competition heats up: SpaceX’s next Falcon 9 commercial launch, set for early Saturday morning, will once again attempt a soft splashdown of its first stage.
If this launch happens as scheduled it will also be the fastest turn-around between launches for the company.
The sanctions against Russia imposed by the Obama administration could delay the launch of Iridium’s second generation communications constellation of satellites.
The competition heats up: SpaceX continues to acquire land in Texas for its planned spaceport in Brownsville.
Elon Musk’s Dogleg Park LLC picked up an additional five lots in late April, bringing the total number of lots it has acquired in Cameron County to 95. The total land area that SpaceX now owns is roughly 38 acres of land, public records show. This is in addition to 56.5 acres that SpaceX has under lease at the site of what would be the world’s first private and commercial vertical launch site.
Compared to the acquisitions made by the federal government when it established its space centers in Florida and Wallops Island, these purchases are small. Nonetheless, they are likely sufficient for what the company plans to do.
The competition heats up: SpaceX releases spectacular footage of another vertical take-off and landing test of their Falcon 9R rocket, this time flying over 3,000 feet in the air.
Video below the fold. What I think everyone, including me, has missed so far about both the Grasshopper and the Falcon 9R test flights is that the test vehicle not only was able to land safely using its rockets, both vehicles were quickly turned around and flown again. This certainly lends weight to the feasibility of the company’s plan to make their first stage reusable.
The competition heats up: The Russians have ten launches scheduled in the next three months, using their Proton, Soyuz, Zenit, Rokot, and new Angara rockets.
Half of these launches are for commercial customers.
A draft bill in Congress is proposing the Pentagon develop an engine for the Atlas 5 engine to replace the Russian engine now used.
The legislation passed by a House subcommittee Wednesday calls for up the U.S. military to spend up to $220 million next year to kick off full-scale development of the engine, which could be ready for flights no later than 2019. The bill states the Defense Department “should develop a next-generation liquid rocket engine that is made in the United States, meets the requirements of the national security space community, is developed by not later than 2019, is developed using full and open competition, and is available for purchase by all space launch providers of the United States.”
There is no reason for this funding gift to the aerospace industry. For one thing, there are two rockets that already exist that use all U.S. parts, the Delta family of rockets and the Falcon 9. For another, if Congress stays out, the private sector will take care of this need and do it for a lot less and far quicker, while costing the taxpayers relatively little. By making this a government project we guarantee it will be expensive and take forever, thus keeping the pork flowing to Congressional districts without solving the problem.
And speaking of keeping pork flowing to Congressional districts, pork king Senator Richard Shelby (R-Alabama) today ripped into NASA for trying to trim a little from the budget of SLS (which sends a lot of cash to Alabama). He also condemned NASA’s manned commercial effort.
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Guns or rockets: Which part of the ATK split is the stronger?
In addition to my May 6 at 7 pm (Pacific) appearance on the Space Show with David Livingston to discuss the situation with the Russians and ISS, I am also going to appear on Coast to Coast with George Noory on May 7 from 10 to 11 pm (Pacific) to discuss the same topic.
The Russian situation is a difficult one for the United States, and the reason it is difficult is because of a long series of incredibly stupid decisions by our elected officials, from both parties, for the past decade. Nor is my complaint here 20-20 hindsight. From the day George Bush proposed retiring the shuttle in 2010 and not replacing it until 2014, at the earliest, I have said this is stupid and astonishingly short-sighted. Sadly, Congress liked Bush’s short-sightedness and has been endorsing it now for a decade. Hearing them complain now about our dependence on Russian space capabilities is more than infuriating. Where were they when they might have done something to prevent this situation?
Listen in. I think it will be entertaining.
The competition heats up: Boeing and Bigelow show off their respective manned capsule and space station module. More here.
The images of Bigelow’s mock-up of its BA-330 space module are what is especially interesting, considering that we have seen similar mock-ups already of the interior of Boeing’s CST-100 capsule.
Engineers commanded Curiosity to drill its third drill hole on Tuesday on what looks like an outcrop of sandstone in Gale Crater.
This hole is shallow and is merely a test to see if a deeper full bore would be worthwhile geological.
That Curiosity has only drilled three holes, and is now only doing a test bore first is partly because engineers fear that using the drill too much will cause a short circuit that will disable the rover entirely. This fear is because of a design flaw in the construction of the rover and the drill.
