Tag: capitalism

Congressional report worries over Falcon 9 engine cracks

11:05 pm

A forthcoming congressional report, reported by the Wall Street Journal, reveals that NASA is concerned about cracks that occur in the turbopumps of SpaceX’s Merlin engines.

The newspaper says the report has found a “pattern of problems” with the turbine blades within the turbopumps, which deliver rocket fuel into the combustion chamber of the Merlin rocket engine. Some of the components used in the turbopumps are prone to cracks, the government investigators say, and may require a redesign before NASA allows the Falcon 9 booster to be used for crewed flights. NASA has been briefed on the report’s findings, and the agency’s acting administrator, Robert Lightfoot, told the newspaper that he thinks “we know how to fix them.”

A spokesman for SpaceX, John Taylor, said the company already has a plan in place to fix the potential cracking issue. “We have qualified our engines to be robust to turbine wheel cracks,” Taylor said. “However, we are modifying the design to avoid them altogether. This will be part of the final design iteration on Falcon 9.” This final variant of the Falcon 9 booster, named Block 5, is being designed for optimal safety and easier return for potential reuse. According to company founder Elon Musk, it could fly by the end of this year.

Here’s the real scoop: SpaceX initially built the engines to fly once, just as every single rocket company has done in the entire history of space, excluding the space shuttle. Under these conditions, the cracks could be considered an acceptable issue, which is what they mean when they say “We have qualified our engines to be robust to turbine wheel cracks.” My guess is that they tested the engines, found that the cracks were not a significant problem for a single flight, especially because the Falcon 9 rocket uses nine Merlin engines on the first stage and thus has some redundancy should one fail. And based on SpaceX’s flight record — no launch failures due to failed engines — that conclusion seems reasonable.

SpaceX is now redesigning to eliminate the cracks, however, because such cracks are not acceptable for engines that will fly multiple times on reused first stages.

Thus, this story, as leaked, appears to me to be a hit job by powers in Congress who dislike the competition that SpaceX poses to big government rockets like SLS. SLS will use salvaged shuttle engines, designed initially for many reuses, and thus are superior in this manner to SpaceX’s Merlin engines. The shuttle engines however were also built by the government, which didn’t care very much about the cost of development, or making any profits. The comparison thus is somewhat bogus. Moreover, I suspect these cracks were only discovered after SpaceX successfully landed and recovered some first stages. To put them on trial in the press now for doing good engineering research and redevelopment seems somewhat inappropriate.

The report itself has not yet been released, though it does also note lingering issues with the parachutes being developed for Boeing’s Starliner capsule.

Overall, both companies are struggling to start their operational flights by 2019. For Congress or NASA to try to put more roadblocks up in that development seems most counterproductive.

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More new robots from Boston Dynamics

4:34 pm

The video at the link shows off SpotMini, of video of which I posted previously. However, the first robot shown is one they have named Handle and is something they admit could be “nightmare-inducing.” It walks upright on two legs, but instead of feetpods it has wheels, giving it the ability to move very fast. And for some reason, they put its arms on backwards so that the elbows bend inward instead of outward.

Watch the video. The robot design work here is truly breath-taking.

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The ships of Hanjin six months after it went bankrupt

1:44 pm

Real news: Six months ago the shipping company Hanjin went bankrupt, stranding its 96 container ships worldwide. This article takes a detailed look not only on what happened to those ships since, but also at the state of the entire shipping industry.

There was a time when Hanjin’s collapse in August and this follow-up story would have been major news stories, covered by all the leading mainstream press outlets. No more. Even though it indicates significant financial and economic trends that should concern anyone who is serious about being an educated citizen, the press doesn’t cover it, and the public today really doesn’t care.

Just another indicator that a new dark age is looming.

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ESA commits $91 million to reusable rocket engine development

7:32 pm

The competition heats up? Despite a general lack of interest in reusability, the ESA has now committed $91 million to develop a new low cost prototype reusable rocket engine.

In an interview with SpaceNews, Airbus Safran Launchers CEO Alain Charmeau said FLPP is allocating 85 million euros ($91 million) to Prometheus to fund research and development leading to a 2020 test firing. Now that Prometheus is an ESA program, Charmeau expects more countries will get involved. “ESA will pay the contract to Airbus Safran Launchers and then Airbus Safran Launchers will cooperate with European industry, of course France and Germany, but we will have also contributions from Italy, Belgium, Sweden and probably a couple of others to a smaller extent,” Charmeau said.

This project reminds me of many NASA development projects. The agency spends the money to do a test firing, but the prototype is never used and gets abandoned as soon as the test is completed.

Things might change, however, come the 2020s. By then I think American companies will be quite successful in their effort to create reusable rockets, and that will leave Europe in the lurch competitively. Their solution at this time for combating that future competition however is not getting more competitive. Instead, as noted in the article at the link, Airbus Safran, the company building Ariane 6, wants the ESA to compel its members to use their rocket, regardless of cost.

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The private weather industry moves forward

9:23 am

Link here. Key quote:

Early next month, aerospace start-up Spire Global of Glasgow, UK, will send a mini-satellite into space aboard an Indian government rocket. This ‘cubesat’ will join 16 others that are beaming a new type of atmospheric data back to Earth — and some scientists worry that such efforts are siphoning funding away from efforts to push forward the science of weather forecasting. Spire will begin providing observations to the US government on 30 April.

The probes track delays in radio signals from Global Positioning System (GPS) satellites as they pass through the atmosphere — a technique known as radio occultation. Researchers can use the data to create precise temperature profiles of the atmosphere to feed into weather-forecasting models — and eventually, perhaps, climate models.

Spire and its competitor GeoOptics of Pasadena, California, are participating in a pilot project announced in September by the US National Oceanic and Atmospheric Administration (NOAA), which is under pressure from the US Congress to determine whether it can cut costs by using commercial weather data. But scientists worry that such efforts are hampering the development of radio occultation. For years, they have sought federal funding for a project to advance the technique, but Spire and its competitors say they can offer high-quality data for a fraction of the price. [emphasis mine]

The quotes I have highlighted illustrate the hidebound leftist scientific opposition to introducing private enterprise into weather research. The article, published in the journal Nature, never once articulates in any way how these private efforts will hurt scientific research. What it does show is that the private effort will cost a tenth of the government effort while getting launched much faster. The money, however, will go to these private companies, and not the scientific factions that up until now have lived on the government money train.

The complaints here are the same as those I saw in NASA back about a decade ago when NASA first considered hiring private companies to provide it cargo to ISS. This is a turf war. NOAA is now being pressured by Congress to do the same: stop building big expensive weather satellites and buy the service for much less from the private sector. The scientific community sees this as a threat to its funding and is trying to stop it.

With Republicans controlling all three branches of the federal government I think this opposition will be fruitless, and we shall see the shift to private enterprise in weather data-gathering to accelerate.

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Government-owned Alaska Aerospace considers second spaceport

9:02 am

The competition heats up: State-owned Alaska Aerospace is considering opening a second spaceport outside the state and closer to the equator.

Alaska Aerospace operates the Pacific Spaceport Complex Alaska. The Kodiak Island complex is capable of polar, sun-synchronous and high-inclination orbits, but does not support the equatorial launches that make up most of the industry demand. With the new launch facility, Campbell said having equatorial launches will give the corporation a competitive advantage and also bring more customers to Kodiak.

The state no longer funds the corporation, which has never made money. Still, it now has contracts with Rocket Lab and Vector Space Systems and this new move is an obvious effort to make itself more viable.

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Recovered Falcon 9 first stage prepped for launch

8:53 am

The competition heats up: SpaceX on Tuesday revealed that last week it has completed the standard static fire testing of the recovered Falcon 9 first stage that it plans to relaunch in March.

A March launch would mean an 11-month turnaround, which is far from optimal, but understandable for the first time. SpaceX’s founder and chief executive, Elon Musk, has acknowledged the company must do better in the future if resuable flight is to become economically viable. He says the next—and likely final—iteration of the Falcon 9 rocket will be optimized for reuse. “Block 5 is the final upgrade of the Falcon architecture,” he tweeted earlier this year. “Significantly improves performance & ease of reusability. Flies end of year.”

It now seems likely that SpaceX will fly the landed boosters it currently has, at most once or twice, before retiring them, instead of multiple times. Although the company hasn’t elaborated on the problems with the engines, booster structure, or composite materials that have shown wear and tear after their orbital launches and returns, Musk is confident that changes to the Block 5 version of the rocket will solve the problem. “I think the F9 boosters could be used almost indefinitely, so long as there is scheduled maintenance and careful inspections,” he has said.

In other words, SpaceX has had — for the first time in history — the opportunity to inspect a number of used first stage rockets, and that precious knowledge is making it possible for them to upgrade the stage design to make future stages more hardy. In fact, those future stages won’t be stages, but reusable vessels that SpaceX could even name if it wished.

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A review of 2016 launches

8:53 am

Link here. The report essentially confirms my own conclusions that I posted several weeks ago. This new report however also looks at total payloads, something I had not done, and finds that though there was a decline in 2016 in the number of satellites launched, they expect that trend to end in 2017 with the continued growth in the smallsat industry.

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India to launch spare GPS satellite because of single satellite failure

8:42 am

Because of the failure of the atomic clocks on one of its GPS satellites have failed, India now plans to launch one of their spare satellites to increase the system’s redundancy.

The article does not say whether they will make any changes to the clocks on the spare satellite, which are the same as the failed clocks on the Indian satellite and were all built by the same European company that built the clocks on Europe’s Galileo GPS satellites that are also failing.

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