Tag: engineering

An update on Dawn in its journey from the asteroids Vesta to Ceres.

9:30 am

An update on Dawn in its journey from the asteroids Vesta to Ceres. Bottom line:

Dawn is 18 million kilometers (11 million miles) from Vesta and 50 million kilometers (31 million miles) from Ceres. It is also 3.47 AU (519 million kilometers or 322 million miles) from Earth, or 1,310 times as far as the moon and 3.42 times as far as the sun today. Radio signals, traveling at the universal limit of the speed of light, take 58 minutes to make the round trip.

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Russia has announced that they will resume Proton rocket launches in September.

8:53 am

Russia has announced that they will resume Proton rocket launches in September.

Though they have pinpointed the specific cause of the most recent launch failure, they have not yet announced any remedial actions. Note also the expected number of launches for the rest of the year, 4 to 5, is down from earlier expectations.

Meanwhile, in Kazakhstan, an official in that country’s space program has been arrested for taking bribes.

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SpaceX has confirmed that it plans to begin vertical take-off and landing tests of a full scale Falcon 9 first stage.

6:02 pm

The competition heats up: SpaceX has confirmed that it plans to begin vertical take-off and landing tests of a full scale Falcon 9 first stage.

The tests would be in New Mexico’s spaceport, and are essentially a scaled up version of the Grasshopper tests the company has been doing in Texas. It appears they are going to do these ground-up tests in conjunction with attempts on each future Falcon 9 launch to land the first stage.

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The state of SLS construction.

10:40 pm

The state of SLS construction.

The article is mostly focused on the engineering challenges of building a new rocket out of old pieces of the space shuttle. Kind of reminds me of Frankenstein. Nonetheless, I do get the impression for the first time that this heavy lift rocket will be built, and will fly at least once.

After that, however, I expect it to die from lack of funds. In fact, its history will probably parallel that of the Soviet Union’s Energia rocket, which flew twice, once to launch their shuttle copycat Buran and once to lift a failed payload whose purpose has never been clearly revealed. Soon thereafter came bankruptcy and the end of the Soviet Union, which couldn’t afford such a monstrosity. SLS will likely see a similar fate.

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SpaceX has signed a contract with MDA to launch all three of Canada’s next generation Radarsat satellites.

9:32 am

The competition heats up: SpaceX has signed a contract with MDA to launch all three of Canada’s next generation Radarsat satellites.

MDA’s willingness to go with SpaceX prior to the September 5 launch of its Cassiope satellite on the Falcon 9 illustrates again the confidence they have in SpaceX. At the same time, this contract is for launches expected to occur around 2018, which is a long way away. Much can happen till then, including the possibility that SpaceX will go bust.

In other words, right now it is the successful launch of Falcon 9 that is of significance, not these new contracts. Only if those launches succeed will these contracts then become really significant.

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On Friday an astronaut on ISS controlled and steered a rover on Earth.

8:33 am

On Friday an astronaut on ISS controlled and steered a rover on Earth.

While zipping around Earth several hundred miles above the planet’s surface, European Space Agency astronaut Luca Parmitano drove a 220-pound (100 kilograms) rover across a moon-mimicking landscape here at NASA’s Ames Research Center, even ordering the robot to deploy a simulated film-based radio telescope antenna.

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A Norwegian town, sunless for five months of the year, is building a giant array of mirrors to light up its town square.

7:20 pm

A Norwegian town, sunless for five months of the year, is building a giant array of mirrors to light up its town square.

Three mirrors with a total surface area of about 538 square feet will sit at an angle to redirect winter sun down into the town, lighting up over 2150 square feet of concentrated space in the town square. A similar idea exists in the Italian village of Viganella, which has used brushed steel to reflect light since 2006.

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The developmental engineering successes of the new commercially-built private spaceships, Dragon, CST-100, and Dream Chaser, appears to be winning over Congress.

9:12 am

The developmental engineering successes of the new commercially-built private spaceships, Dragon, CST-100, and Dream Chaser, appears to be winning over Congress.

The article linked above is mostly about Boeing’s effort with its CST-100 spaceship, but within it was this significant paragraph:

Last week, the House Appropriations committees approved $500 million and Senate appropriators $775 million for commercial crew development as part of NASA’s 2014 budget. The first figure is well below the Obama administration’s $821 million request, a figure NASA Administrator Charles Bolden has characterized as essential to meet the 2017 objective. Nonetheless, agency and company managers believe legislators are losing their skepticism over a program that has so far committed $1.4 billion to competing vehicle designs from SpaceX, Sierra Nevada, Boeing and others. [emphasis mine]

Congress is still insisting that NASA spend far more for the Space Launch System (SLS), but they do appear to be increasingly less interested in cutting the new commercial crew program. Eventually, a light will go off in their dim brains and they will realize how much more cost effective this program is compared to SLS. I expect this to happen sometime in the next three years, It is then that SLS will die.

Note that I don’t have any problems at all with the above cuts to the commercial program. It is far better to keep these private efforts on a short leash, thereby forcing the companies to stay lean and mean, than to give them a blank check (as has been done in the past and with SLS) and thus allow them to become fat and lazy.

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SpaceX has begun assembly of the upgraded Falcon 9 rocket that will launch its first commercial payload in early September.

8:52 am

The competition heats up: SpaceX has begun assembly of the upgraded Falcon 9 rocket that will launch its first commercial payload in early September.

This launch has been significantly delayed because the company was testing the actual engines to be used in the rocket, and had a series of engine aborts during testing (as outlined in the article above). Once the engines completed a full duration burn last week, however, the way was cleared for launch.

The article is very detailed, and also outlines the other new features of the upgraded Falcon 9 rocket to be flown for the first time in September. I must admit that this list makes me nervous. A lot rides on the success of this launch, both for SpaceX and for the entire new commercial space industry.

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Bigelow announces prices for visiting or renting their space station modules.

11:53 am

The competition heats up: Bigelow Aerospace announces prices for visiting or renting their space station modules.

For countries, companies, or even visiting individuals that wish to utilize SpaceX’s Falcon 9 rocket and Dragon capsule, Bigelow Aerospace will be able to transport an astronaut to the Alpha Station for only $26.25 million. Using Boeing’s CST-100 capsule and the Atlas V rocket, astronauts can be launched to the Alpha Station for $36.75 million per seat. In stark contrast to the short stays of a week or so aboard the ISS that we have seen wealthy individuals pay as much as $40 million for, astronauts visiting the Bigelow station will enjoy 10 – 60 days in orbit. During this time, visiting astronauts will be granted access to the Alpha Station’s shared research facilities. Examples of available equipment include a centrifuge, glove-box, microscope, furnace, and freezer. Also, potential clients should note that as opposed to the ISS, where astronauts dedicate the lion’s share of their time to supporting station operations and maintenance, astronauts aboard the Alpha Station will be able to focus exclusively on their own experiments and activities, ensuring that both nations and companies can gain full value from their investment in a human spaceflight program. [emphasis in original]

The release also describes price plans whereby the customer can rent part of a module for a period of time, as well as the prices for the naming rights to a module.

I hadn’t heard about it elsewhere and do not remember if this is old news or not. The announcement on the website is undated. Nonetheless, as the release notes, these prices undercut the fees charged by the Russians and provide far more opportunities for the customer.

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NASA is trying get some spare spacesuit parts onto a Russian Progress freighter, scheduled to launch Saturday, in its effort to fix its American spacesuits on ISS.

7:14 pm

NASA is trying get some spare spacesuit parts onto a Russian Progress freighter, scheduled to launch Saturday, in its effort to fix its American spacesuits on ISS.

It must be emphasized that NASA still doesn’t know exactly what caused the water leak into that spacesuit during a spacewalk last week.

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Robot engineers have successfully built a fleet of small flying robot helicopters that can fly individually or as complex large arrays.

8:50 am

Robot engineers have successfully built a fleet of small flying robot helicopters that can fly individually or as complex large arrays. With video.

Applying this biologically-inspired solution to swarms of robots could enable a wide range of applications. Swarms of robots could be used to explore other planets, or search a large area for a missing person. When a larger payload needs to be lifted, groups of robots would combine to make a larger flying platform and when that job was done, disperse into smaller groups that can cover a larger area. The advantage of distributed control in these scenarios is that there is no vulnerable central control unit which, if taken out, could bring down the entire mission.

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With Proton rocket’s most recent launch failure, Inmarsat looks for alternatives.

3:15 pm

The competition heats up: With Proton rocket’s most recent launch failure, Inmarsat looks for alternatives.

The failure and its spectacular nature, all caught on video — oscillating trajectory on liftoff before tipping over, bursting into flames and then crashing — cast a harsh light on Inmarsat’s sole-source decision for the Global Xpress satellites. The company’s stock tumbled on the London Stock Exchange but has since recovered as details emerged about the relatively easily addressed causes of the rocket’s failure.

Inmarsat officials said at the time of the ILS contract award that they received an exceptionally low price in return for booking all three launches on Proton and that the vehicle’s record justified the choice not to include a second vehicle in the Global Xpress mix.

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