Tag: engineering

Using video game software, Surrey Satellite has devised a way for nanosatellites to seek each other out and then dock to form a larger satellite.

8:01 pm

The competition heats up: Using video game software, Surrey Satellite has devised a way for nanosatellites to seek each other out and then dock to form a larger satellite.

If the STRaND-2 satellites are able to dock with one another, it opens up a whole new world of space engineering. Instead of building one large spacecraft, as in conventional satellite manufacturing, or using microsatellites flying in formation as is being developed currently, dockable satellites would be modular “space building blocks” according to [Surrey]. Satellites could be made as plug-and-play components that could be sent up in segments using smaller, cheaper rockets or piggybacked with other payloads and then linked together. This would not only be a cost savings, but would allow for much greater design flexibility. It would also make it much easier to repair, maintain, refuel or upgrade satellites. Today, a satellite with a failing power system is an expensive write off. Tomorrow, it would simply a matter of sending up a new power module.

Even the fight against space junk would benefit, since a dockable micro-satellite with a booster pack could easily dock with a dead satellite and either return it to the Earth’s atmosphere or out to a space disposal area.

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An Israeli company has discovered a giant off-shore oil and gas field within Israeli territorial waters.

9:36 am

An Israeli company has discovered a giant off-shore oil and gas field within Israeli territorial waters.

“The quantity of gas discovered in the licenses, and the high probabilities, make it the third largest offshore discovery to date,” according to Israel Opportunity chairman Ronny Halman, quoted by Globes. He added, ”This quantity guarantees Israel’s energy future for decades, and makes it possible to export Israeli gas, and boost the state’s revenues without worrying about gas reserves for domestic consumption.”

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A targeted SETI observation of Gliese 581, the nearest star with exoplanets in the habitable zone, has found no evidence of alien communications.

9:04 am

Radio silence: A targeted SETI observation of Gliese 581, the nearest star with exoplanets in the habitable zone, has found no evidence of alien communications.

This was a proof of concept experiment, and though they detected nothing, they also did not rule out the possibility of alien life, as their radio telescope wasn’t sensitive enough to do so. You can download the actual paper here.

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Environmental activists have launched a petition drive to stop SpaceX from building a commercial spaceport in Brownsville, Texas.

1:45 pm

The wrong side of history: Environmental activists have launched a petition drive to stop SpaceX from building a commercial spaceport near Brownsville, Texas.

“I love the space program as much, if not more, than anyone,” said Environment Texas Director Luke Metzger. “But launching big, loud, smelly rockets from the middle of a wildlife refuge will scare the heck out of every creature within miles and sprays noxious chemicals all over the place. It’s a terrible idea and SpaceX needs to find another place for their spaceport.”

This guy obviously doesn’t know that almost all of the Kennedy Space Center is a wildlife refuge, and a successful one at that. But then, what do facts have to do with most environmental causes?

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What is the current state of the six American flags planted on the Moon by Apollo astronauts? One NASA engineer takes a look.

9:13 pm

What is the current state of the six American flags planted on the Moon by Apollo astronauts? One NASA engineer takes a look.

James Fincannon has been an important contributor here at Behind the Black, sending me some interesting tips from time to time that have resulted in some good posts, such as this one about caves on the Moon.

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From a past SpaceX critic: SpaceX’s Falcon Heavy could wipe its launch competition.

2:45 pm

From a past SpaceX critic: SpaceX’s Falcon Heavy could wipe out its launch competition.

This announcement [of SpaceX’s deal with Intelsat] is an indication that SpaceX is now threatening the dominance of Arianespace and ILS in the commercial launch arena. If a Falcon 9 Heavy can carry two or more large GEO communications satellites for half the launch price of an Ariane 5 or Proton M booking, then this could spell the end of their commercial operations as going concerns. It is not only on the commercial front that SpaceX may dominate. SpaceX’s Falcon 9 Heavy launch service promises to be less than half the cost of using equivalent Atlas and Delta rockets. So even the cosy launch provider-governmental relationships that previously benefited the likes of Boeing, Lockheed Martin and Pratt and Whitney/Rocketdyne could now be threatened.

As much of a fan of SpaceX as I am, and as much as I agree with the above statement, we must remember that Falcon Heavy is not yet built. Moreover, I suspect that the deal with Intelsat does not yet include any transfer of funds. SpaceX has a long way to go before any of this happens. Nonetheless, the company’s continued success very obviously is beginning to make its competitors nervous.

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The radiation released from the Fukushima nuclear power meltdown in Japan last year will cause almost no cases of cancer according to two separate reports.

11:42 am

The radiation released from the Fukushima nuclear power meltdown in Japan last year will cause almost no cases of cancer according to two separate reports.

This story is almost a week old. I missed it initially because Nature buried the results, headlining the story in the most boring way possible: “Fukushima’s doses tallied”.

These results however illustrate again the success of the engineering at the nuclear power plant. Certainly they did things wrong, and certainly there were engineering failures there. Nonetheless, the safety features allowed them to contain the power plant even after it experienced the most powerful earthquake in recorded history followed by the most powerful tsunami in a thousand years.

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Kazakhstan is blocking three upcoming Russian satellite launches from its spaceport in Baikonur because of a dispute over where rocket debris will fall.

9:10 am

Kazakhstan is blocking three upcoming Russian satellite launches from its spaceport in Baikonur because of a dispute over where rocket debris will fall.

I suspect that Russia is now even more enthused over completing its new spaceport in Vostochny.

In related news, a Russian analysis of the consequences of the Dragon docking at ISS. The article also notes some potential changes in the Russian space effort.

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Computer researchers have found that the microprocessor used by the U.S. military but made in China contains secret remote access capability.

9:04 pm

You can’t make this stuff up: Computer researchers have found that the microprocessor used by the U.S. military but made in China contains secret remote access capability.

The unnamed chip, which the researchers claim is widely used in military and industrial applications, is “wide open to intellectual property theft, fraud and reverse engineering of the design to allow the introduction of a backdoor or Trojan”, they said. … The “bug” is in the actual chip itself, rather than the firmware installed on the devices that use it. This means there is no way to fix it than to replace the chip altogether.

How stupid can our government be to buy microprocessors from the Chinese, a country that is definitely not our friend? Pretty stupid, it appears.

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The Stratolaunch system has entered system design review.

8:12 am

The competition heats up: The privately-built Stratolaunch system has entered system design review.

The key quote from this article is this:

Scaled Composites, which is building the aircraft, has purchased two ex-United Boeing 747-400s, and is in the process of dismantling them. Stratolaunch will use the engines, hydraulics system and several other major components to build its own aircraft. The remaining fuselage and wing shells will be scrapped. SpaceX is building the rocket, which will launch approximately 13,000lb into orbit. “This is really going after the Delta II market,” says Steve Cook, Dynetics chief technologist. The group eventually hopes to qualify the system for human spaceflight and begin launched manned spacecraft. [emphasis mine]

Stratolaunch is not being built for NASA. It is aimed at the commercial market instead, with the intention of providing a cheaper alternative for getting large payloads into orbit.

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