Tag: engineering

Orbital Sciences has renamed its Taurus II rocket the Antares rocket

2:49 pm

Orbital Sciences has renamed its Taurus II rocket the Antares rocket.

To clear up any marketplace confusion and provide clear differentiation between this new launch vehicle and our Taurus XL rocket. Antares is significantly different – it serves the medium-class space launch market and its liquid fuel first stage technology is major departure from previous Orbital space launch vehicles. In addition, a project of this scale and significance deserves its own name like Orbital’s Pegasus®, Taurus® and Minotaur rocket programs that have come before it.

I think they have also realized they needed to distinguish Antares from the Taurus XL rocket’s recent problems, failing twice to put NASA climate satellites into orbit.

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LightSquared actually disrupted 75% of the GPS receivers used during government testing

9:14 am

Actually, those tests weren’t so good after all: LightSquared’s broadband system actually disrupted 75% of the GPS receivers used during government testing.

Morrissey also notes these disturbing facts, considering the Obama administration’s strong support for Lightsquared:

  • The CEO of LightSquared has been a big Democratic Party contributor.
  • Barack Obama was an early investor in LightSquared.
  • The Obama administration has put pressure on military officials to change their opposition to Lightsquared.
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LightSquared touts new tests prove its internet service will not interfere with GPS

10:10 pm

In a press event today, LightSquared announced that just-completed tests prove that its internet service will not interfere with GPS.

According to the company, the three private companies — Javad GNSS, PCTel and Partron — that make GPS equipment have been testing interference solutions and those tests have gone well. “Preliminary results show that GPS devices tested in the lab easily surpass performance standards thanks to these newly developed solutions,” Ahuja said. “We are confident that this independent testing will mirror testing being done by the federal government.”

Here’s another perspective:

Jim Kirkland, vice president of Trimble and a founding member of The Coalition to Save Our GPS, is trying to slow LightSquared’s momentum. “It is obviously extremely premature to claim at this point that these latest tests demonstrate that LightSquared’s proposed repurposing of the mobile satellite band for terrestrial operations is ‘compatible’ with high-precision GPS,” Kirkland says in a statement. “Even if new equipment solutions are fully tested and verified, these existing high-precision receivers will have to be retrofitted or replaced. LightSquared still refuses to accept the financial responsibility for addressing interference to existing devices, and so has not offered a comprehensive solution in any way, shape, or form.”

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An experiment designed to mimic the dynamo at the Earth’s core is about to be turned on.

8:43 am

Mad scientists at their best! An experiment designed to mimic the dynamo at the Earth’s core is about to be turned on.

Ten years in the making, the US$2-million project is nearly ready for its inaugural run. Early next year, the sphere will begin whirling around while loaded with 13,000 kilograms of molten sodium heated to around 105 °C. Researchers hope that the churning, electrically conducting fluid will generate a self-sustaining electromagnetic field that can be poked, prodded and coaxed for clues about Earth’s dynamo, which is generated by the movement of liquid iron in the outer core. If it works, it will be the first time that an experiment that mirrors the configuration of Earth’s interior has managed to recreate such a phenomenon.

This is a really very cool experiment, as we really do not have a good understanding of how planetary magnetic fields are produced.

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Electric car company shuts down

11:25 pm

For once, the taxpayer doesn’t get screwed: The electric car company Aptera has shut down due to lack of interest from investors and the lack of a loan from the government.

The California company was counting on a federal loan – and private investments to match the loan – so that it could start producing its very first electric vehicle. Aptera said it was close to securing a $150 million from the U.S. Department of Energy, but it couldn’t line up the private dollars necessary to complete the loan application process.

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More budget battles in Europe over $16 billion fusion reactor project

4:58 pm

The budget battles continue in Europe over funding a $16 billion fusion reactor project.

Now the three statutory bodies of the European Union have agreed to cobble together €360 million from anticipated unspent funds in the still-to-be-decided 2013 budget. Another €840 million will be found by shifting money from 2012 and 2013 budget lines for farm and fishing subsidies, rural development, and environment, into the ones covering research. The remaining €100 million had already been allocated to ITER in the 2012 budget.

Sounds to me as if this whole thing has feet of clay, and is going to fall apart long before completion.

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Over-the-counter osteoporosis drug appears to keep astronauts from losing bone density on long space flights

10:14 am

Big news: New research on ISS now shows that the standard over-the-counter osteoporosis drugs used by millions on Earth appears to keep astronauts from losing bone density during long space flights.

Beginning in 2009, the group administered the drug to five long-stay astronauts on the International Space Station (ISS), including Koichi Wakata, 48, and Soichi Noguchi, 46. The five took the drug — an over-the-counter bisphosphonate used to treat osteoporosis — once a week starting three weeks before they lifted off until they returned to Earth. The researchers then monitored the astronauts’ bone mass over time and compared the results to those for 14 astronauts that had never taken the drug.

The results showed that the 14 who had never taken the drug had average bone density loss of 7 percent in the femur, and 5 percent in the hip bone. The five astronauts on bisphosphonate, however, only had average bone density loss in the femur of 1 percent, and even a 3 percent increase in the hip bone. Calcium levels in their urine, which rise the more bone mass is lost, were also very low.

If these results hold up, they might very well solve one of the biggest challenges faced by any interplanetary traveler. Up until now, bone loss during long weightless missions never seemed to average less than 0.5 percent per month. After spending three years going to and from Mars, an astronaut could thus lose about almost 20 percent of their bone mass in their weight-bearing bones, and would probably be unable to return to Earth.

Thus, a mission to Mars seemed impossible, unless we could build a ship with some form of artificial gravity, an engineering challenge we don’t yet have the capability to achieve.

If these already tested drugs can eliminate this problem, then the solar system is finally open to us all. All that has to happen now is to do some one to two year manned missions on ISS to test the drugs effectiveness for these long periods of weightlessness.

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