Quotulatiousness

May 25, 2012

Grabbing the Dragon‘s tail

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 11:20

Brid-Aine Parnell at The Register on today’s successful rendezvous with the ISS:

Elon Musk’s SpaceX has just made history with the first ever commercial cargoship to be captured by the International Space Station’s robotic arm.


Image from NASA TV

Flying above northwestern Australia, flight engineer Don Pettit aboard the ISS reached out with the Canadarm and grabbed the Dragon at 9.56am EDT, 14.56 GMT.

Reg staff are not sure if astronauts are given cheesy lines to say at these big moments, but Pettit had a great one ready.

“Looks like we’ve got a dragon by the tail,” he announced to Mission Control Centre in Houston.

“Looks like this sim went really well, we’re ready to turn it around and do it for real,” he joked.

May 24, 2012

Next step in Dragon/ISS drill: close fly-by

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 10:53

Lewis Page at The Register on the successful Dragon fly-by of the ISS:

It’s another moment of truth for upstart space startup SpaceX as once again the company attempts to do something that has only ever been accomplished to date by major government space agencies: docking one spacecraft to another in orbit and transferring cargo.

Having launched its new Dragon spacecraft on Tuesday — on only its second flight — SpaceX is now seeking to bring the ship to a docking with the International Space Station on Friday. Many boxes must be ticked before this can happen, however: but today the first was checked off as the Dragon made a close pass within 1.5 miles of the station, and ‘nauts aboard the orbiting outpost confirmed that their remote-control console was able to command the new ship. This was done by ordering the Dragon to illuminate its strobe lights as it flew by the Station.

In fact the station’s crew — the Dragon tests were handled by André Kuipers of the ESA and NASA’s Don Pettit — couldn’t see that the lights were on owing to bright sunlight illuminating the still quite distant Dragon. However telemetry confirmed that the capsule had received the radio command from the ISS and activated its lights, and viewers of NASA TV were treated to video of the Dragon as it gradually overhauled the station from beneath, passing above South Africa and the Indian Ocean as it did so.

May 22, 2012

SpaceX Dragon launches successfully

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 09:10

Brid-Aine Parnell reports on today’s launch of the SpaceX Dragon:

History is just days away from being made as SpaceX’ Dragon cargoship finally blasted off successfully on its Falcon 9 rocket this morning on its way to a rendezvous with the International Space Station.

Elon Musk’s private space firm has had a number of setbacks with the latest test flight of the Dragon, delaying again and again to make sure the software that will put it within spitting distance of the ISS was working properly. And just when it seemed there was no stopping the takeoff last Saturday, the computer held the ship on the ground.

The engines were already firing when the computer “saw a parameter it didn’t like” and aborted the trip. SpaceX engineers later replaced a faulty pressure valve.

However this morning at 08:44 UK time (03:44 US Eastern) there were no problems and the Falcon 9 rocket lifted off on schedule to place the Dragon capsule into an orbit which will carry it to a rendezvous with the station on Friday if all goes to plan.

The first hurdle in the commercial company’s maiden berthing with the ISS has been jumped, with the Dragon out of Earth’s atmosphere, but there’s still a lot to prove before Houston will give the go to attempt a docking.

May 19, 2012

SpaceX Dragon launch aborted, rescheduled to Tuesday at the earliest

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 09:13

Lewis Page at The Register on the scrubbed launch this morning:

The Falcon 9 rocket from private space company SpaceX, intended to launch this morning and send a Dragon capsule loaded with supplies to the International Space Station, has failed to take off. The rocket’s computer aborted the launch automatically at almost the final possible moment, when its engines had already ignited but the vehicle had not yet been released from the pad.

“The computer saw a parameter it didn’t like,” commented launch controllers after the abort, which saw the Falcon’s 9 main engines flare briefly into life as the countdown reached zero before cutting out again.

The rocket is not thought to have been damaged by the aborted launch, and controllers announced a provisional plan to check the craft, refuel it and make another launch attempt on Tuesday morning at 03:44 AM local time (08:44 UK time).

May 18, 2012

SpaceX Dragon smuggling secret cargo to ISS

Filed under: Space, Technology, USA — Tags: , , , — Nicholas @ 08:35

At The Register, Brid-Aine Parnell gets all conspiracy theorized:

Just to add some icing to the SpaceX Dragon launch cake, the cargoship may be carrying a secret payload that nobody knows about.

The first ever commercial spacecraft to dock with the International Space Station, due to go up tomorrow, will already be carrying nonessential food, student science projects, clothes and other supplies for the ISS crew, but Elon Musk’s firm has also hinted there could be something else aboard.

On the last test flight of the Dragon, the craft carried a Top Secret cargo SpaceX refused to reveal to anyone until after mission, which turned out to be a lovely big wheel of cheese in an homage to the classic Monty Python sketch in the cheese shop.

On a slightly more serious level, Jonathan Amos has this report at the BBC News site:

Although billed as a demonstration, the mission has major significance because it marks a big change in the way the US wants to conduct its space operations.

Both SpaceX and another private firm, Orbital Sciences Corp, have been given billion-dollar contracts to keep the space station stocked with food and equipment. Orbital hopes to make its first visit to the manned outpost with its Antares/Cygnus system in the coming year.

Lift-off for the Falcon is timed for 04:55 EDT (08:55 GMT; 09:55 BST). It is going up from Cape Canaveral Air Force Station.

The ascent phase should last a little under 10 minutes, with the Dragon capsule being ejected just over 300km (185 miles) above the Earth.

The conical spaceship will then deploy its solar panels and check out its guidance and navigation systems before firing its thrusters to chase down the station.

A practice rendezvous is planned for Monday when Dragon will move to within 2.5km (1.5 miles) of the station.

If Nasa and SpaceX are satisfied that the vehicle is performing well, it will be commanded to fly up and over the outpost in preparation for close-in manoeuvres on Tuesday.

May 14, 2012

Dragon flight now scheduled for May 19

Filed under: Space, Technology — Tags: , , — Nicholas @ 09:24

Brid-Aine Parnell at The Reg updates us on the SpaceX flight schedule:

The flight of the Falcon 9 has once more been rescheduled, with a new launch date of 19 May, as Elon Musk’s SpaceX decided to tweak the software one more time.

The first commercial craft to restock the International Space Station, a Dragon capsule strapped to a Falcon 9 rocket, has seen more than its fair share of push-backs for the test flight, but it will all pay off if the cargo ship can dock with the station.

SpaceX has already shown it can release and retrieve the Dragon, but getting it to motor alongside the fast-moving ISS and accurately berth with it is no mean feat and the firm has tested and retested the necessary software in the hopes it won’t end up with egg on its face.

[. . .]

Providing this test flight is successful, the Dragon will start to fulfil the contract for a minimum of 12 flights to resupply the ISS. Since the ship is reusable, it will be the only spacecraft capable of bringing cargo back with it as well. And, ultimately, SpaceX hopes that a version of the Dragon will be its first manned spaceship as well.

May 9, 2012

Incrementally privatizing the space program

Filed under: Space — Tags: , , , — Nicholas @ 09:04

April 25, 2012

Identifying the potential profits from asteroid mining

Filed under: Economics, Space — Tags: , — Nicholas @ 09:06

In his Forbes column, Tim Worstall spins a tale that is worthy of Dr. Evil or other movie bad guy multi-billionaires:

We’ve now had the announcement of the business plans of Planetary Resources. Enough to excite everyone who read Heinlein or Jerry Pournelle as a teenager. But the big problem is how might they actually turn a proft? To which the answer is manipulation of the futures markets.

[. . .]

So, imagine that they have reached one of the nickel iron asteroids, it is high in the platinum group metals, they can mine it and they can deliver those pgms to Earth. The moment everyone knows that there is some hundreds of tonnes of these metals on the way down the price will collapse. The answer? Sell the metals in advance, through the futures markets. Get today’s price for delivery in the future.

In fact, sell many more futures than the amount of metal which is to be delivered: go short. As an example, say platinum is $2,000 an ounce (not far off the real price, $62 million a tonne). Planetary Resources is going to deliver 100 tonnes. But instead of selling $6 billion’s worth of platinum for delivery in three months, sell 10 times as much: $60 billion’s worth*. When that 100 tonnes splashes down, in fact when the market knows that the 100 tonnes is likely to splash down, then the market price will fall. Substantially but for illustration we’ll say to $200 an ounce.

The company then delivers that 100 tonnes for which it is paid the $6 billion agreed on those futures deliveries. It still owes the market another 900 tonnes but it can now cover its short at $200 an ounce having sold the futures at $2,000 an ounce. Use the $6 billion that’s going to be incoming to do so and what do we have at the end?

The company has $60 billion incoming from having sold futures. It has delivered 100 tonnes at $6 billion and covered the short for that $6 billion. Net profit $54 billion minus the cost of the space program. Which is pretty good really.

But it gets better … and more Bond-villainous.

April 18, 2012

Reason.tv: The Space Shuttle Era is Over (Thank God!)

Filed under: Government, Liberty, Space — Tags: , , , , — Nicholas @ 09:49

So the space shuttle Discovery has flown its last mission; it’s been towed over the nation’s capital like a bruised Chevy after a demolition derby before being deposited at the Udvar-Hazy air and space museum in northern Virginia.

Other space junkers — Atlantis and Endeavour — are being retired like Brett Favre in a pair of Crocs, too, bringing to end an underwhelming three decades of fruitless and tragic exploration of low-earth orbiting patterns.

Let’s face it: Once we beat the Russians to the moon, the national rocket grew limper than Liberace at a speculum convention. NASA has been dining out on a single 1969 hit longer than Zager and Evans.

The good news is that amateur hour is now over and the private space race has begun. Where two Cold War superpowers failed, let a thousand business plans bloom!

April 17, 2012

SpaceX Dragon cleared for April 30 flight to ISS

Filed under: Science, Space, Technology — Tags: , , — Nicholas @ 09:28

Brid-Aine Parnell updates the status of the SpaceX Dragon re-supply flight to the International Space Station at the end of the month:

The cargoship test flight, assuming it goes off without a hitch, will mark the first time a commercially made spacecraft has ever blasted off to visit the ISS.

NASA and SpaceX officials met yesterday in Houston for the Flight Readiness Review, a typical part of pre-launch prep at the agency, and confirmed that the Dragon and its SpaceX Falcon 9 rocket were on track for the end of this month.

“Everything looks good heading to the April 30 launch date,” said Bill Gerstenmaier, NASA’s associate administrator for Human Exploration and Operations, in a canned statement.

The Dragon is due to blast off from Cape Canaveral at 12.22 EDT (16.22 GMT) carrying 1,200 pounds of cargo.

Because this is a test flight, the cargo isn’t critical stuff for the astronauts, but NASA and SpaceX are still hoping to see the ship fly close enough to the station for its robotic arm to grab it and berth it, which is the tricky bit.

April 13, 2012

Filling in for Envisat: “the CSA’s Radarsats 1 and 2 will try to fill some of the gaps”

Filed under: Cancon, Europe, Science, Space — Tags: , — Nicholas @ 08:43

The European Space Agency is still at a loss on why their flagship Envisat satellite suddenly went silent, but while they’re trying to diagnose and hopefully fix the problem, the Canadian Space Agency is helping to cover some of the gaps:

Controllers say the eight-tonne spacecraft appears to be in a stable condition, but they are not receiving any data at all from it.

Contact was lost with Envisat at the weekend shortly after it downloaded pictures of Spain’s Canary Islands.

A recovery team, which includes experts from industry, is now trying to re-establish contact with the craft.

Mission managers said on Friday that they were working through a number of possible fault scenarios but conceded they had little to go on.

[. . .]

Of more immediate concern are the operational and scientific projects that rely on Envisat data.

The satellite’s information is used daily to monitor for oil spills at sea, to check on iceberg hazards, and to provide information for meteorological forecasts, among a wide range of services.

All this had now been disrupted, said Prof Liebig.

“What we have done is [activate] the contingency agreement we have with the Canadian Space Agency (CSA) which we have had for many, many years. Canada has responded very positively. So, for a certain time, the CSA’s Radarsats 1 and 2 will try to fill some of the gaps.”

March 19, 2012

The PR problem of NASA

Filed under: Bureaucracy, Media, Politics, Space, USA — Tags: , , , , — Nicholas @ 09:49

L. Neil Smith explains why and how NASA has managed to become so uninspiring (hint: it was deliberate).

The truth is, there are three kinds of people in the world, those to whom traveling to, landing on, settling, and terraforming the planet Mars requires no explanation, those for whom no explanation of any kind will ever suffice, and those who remain to be convinced.

Our job in that respect really amounts to putting the romance back into space exploration that the National Aeronautics and Space Administration carefully throttled out of it over the past half century. I think their secret motto was, “If you’re having any fun, you’re not doing it right.”

All that time, NASA and its supporters seemed to be asking desperately, why is the American public losing interest in what we’re doing? But the answer was in the mirror before them. In a desperate bid for false respectability, in a misplaced desire not to evoke visions of Flash Gordon or Buck Rogers or Captain Video, they ended up not evoking any visions at all, and thereby destroyed any reason for the average individual, the average man, woman, or child, to support their program.

I have also come to think — very reluctantly, believe me — that there has been a secret agenda, probably in echelons much higher than NASA itself, to prevent that average individual from ever getting into space, which may be why they opposed the whole “space tourism” idea so hysterically.

March 17, 2012

Schiaparelli’s ambiguous word choice and the lasting obsession with Mars

Filed under: History, Media, Science, Space — Tags: , , , , — Nicholas @ 11:09

Scott Van Wynsberghe reviews the hold that fictitious Mars has held on the imagination since “canals” were observed:

Mars, the most obsessed-about extraterrestrial body in the universe, has come our way again. On March 9, Hollywood unveiled John Carter, the first film adaptation of a famous series of Martian adventures written by Edgar Rice Burroughs, better known as the creator of the jungle hero Tarzan. Burroughs’s Martian yarns act as a portal to 135 years of cultural history that really is out of this world.

The bizarre story of humanity’s modern entanglement with the Red Planet began in 1877, when Italian astronomer Giovanni Schiaparelli reported the existence of “canali” on the Martian surface. In Italian, that word can mean both “channels,” which are natural formations, and “canals,” which are not. According to science writer John Noble Wilford, that ambiguity was never cleared up.

[. . .]

Caught between science fiction and the supernatural, actual scientists were in trouble. French astronomer Camille Flammarion, for example, alternately wrote about Mars and reincarnation (1889) and Mars and science (1892). In 1900, the inventor Nikola Tesla announced that he had monitored transmissions from either Mars or Venus, but he was jeered (biographer Margaret Cheney thinks he was just detecting natural electromagnetic patterns in space). In 1921, radio pioneer Guglielmo Marconi thought he had received a signal from Mars, but that, too, went nowhere. The biggest offender, however, was American astronomer Percival Lowell.

In 1895, Lowell released the first of a series of books proclaiming that Mars was inhabited. The canali, he said, really were canals, supporting a civilization struggling to survive on a dying globe. Although rightly scorned by other astronomers, Lowell was a superb writer and a frequent lecturer — Robert Goddard, the father of American rocketry, heard him speak — so his message spread. (And, in a way, it is still spreading: Think of that recent, much-debunked conspiracy theory about a giant, sculpted face on the Martian surface.)

February 11, 2012

Yet another theory on the solar effect on the Earth’s climate

Filed under: Environment, Science, Space — Tags: , , — Nicholas @ 12:14

You’d automatically assume that the sun is a major factor in the climate, but this theory is non-intuitive:

That man is the Danish physicist Henrik Svensmark, who seems to have discovered the most important factor that actually regulates Earth’s climate, and who is quietly in the process of proving it.

[. . .]

Let me briefly sum up Svensmark’s theory. The temperature of the Earth, he argues, is regulated by the intensity of solar radiation, but not in the obvious way. It is not that the increase is solar radiation heats the Earth directly. (It does, of course, but not to a sufficient degree to explain climate variations.) Rather, an increase in solar radiation extends the Sun’s magnetic field, which shields Earth from cosmic rays (highly energetic, fast-moving charged particles that come from deep space). How does this affect the climate? Here is the crux of Svensmark’s argument. When cosmic rays hit the atmosphere, he argues, their impact on air molecules creates nucleation sites for the condensation of water vapor, leading to an increase in cloud-formation. Since clouds tend to bounce solar radiation back into space, increased cloud cover cools the Earth, while decreased cloud cover makes the Earth warmer.

So if Svensmark is right, lower solar radiation means more cosmic rays, more clouds, and a cooler Earth, while higher solar radiation means fewer cosmic rays, fewer clouds, and a warmer Earth.

Those who have followed the global warming controversy over the years may recall that cloud-formation is one of the major gaps in the computerized climate “models” used by the consensus scientists to predict global warming. They have never had a theory to explain how and why clouds form or to account accurately for their effect on the climate. Svensmark has smashed through this glaring gap in their theory.

January 30, 2012

Researching how to stop asteroids from “just dropping in”

Filed under: Europe, Science, Space, Technology — Tags: , , , — Nicholas @ 10:08

Brid-Aine Parnell in The Register on some of the technologies being explored to reduce or eliminate the chance of unpleasantly close encounters with celestial objects:

A new international consortium has been set up to figure out what Earthlings could do if an asteroid came hurtling towards the planet on a path of imminent destruction.

The project will look at three methods of averting disaster: the Hollywood-sanctioned solutions of sending up a crack team of deep drillers with a nuclear bomb to sort it out, or frantically hurling of all our nukes at it; dragging it to safety with a Star Trek-inspired tractor beam; or hitting it with something we have more control over, like a spaceship.

Sporting the cool moniker NEOShield, the project will explore the possibilities for kinetic impactors, gravity tractors and blast deflection as ways to save our planet from oblivion.

[. . .]

“In the light of results arising from our research into the feasibility of the various mitigation approaches and the mission design work, we aim to formulate for the first time a global response campaign roadmap that may be implemented when an actual significant impact threat arises,” NEOShield boldly stated.

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