Archive for the ‘Engineering’ Category

Boeing 787 Dreamliner story gets green and murky

January 24, 2013

What seemed to be “normal” teething problems with a new aircraft now seems to be something more. Two stories this week suggest that

  1. pressure from the green lobbies pushed Boeing into using inherently unsafe, large, lithium-ion batteries long before the technology was ready for such use, and
  2. the battery chargers used for charging the lithium-ion batteries did not meet product specifications and were prone to short-circuiting but were shipped anyway to Boeing

If these stories have any substance, Boeing could be forced to replace the lithium-ion batteries with alternative batteries. The consequences could be that that weight will increase and/or the batteries will not be rechargeable (an operating cost increase). Moving away from lithium-ion should not therefore be technically too difficult or prohibitive as far as cost is concerned. Dealing with the compensation to airlines for the grounding of 50 of their aircraft and for an indeterminate length of time could be the main economic hit for Boeing. There will, of course, be a cost for redesigning a “fix” and introducing the fix into the entire fleet but that should not be catastrophic. What may be more significant in the long run will be the loss of customer confidence and the potential loss of sales (or delay of sales) which would help Airbus to improve its competitive position.

Washington Examiner:

Boeing Dreamliner fires spark new doubts about a green energy technology

…. Technologists and safety experts had long warned of problems with the lithium ion battery when in 2009 the president began betting billions of tax dollars that it should be the green power of choice for cars, trucks, and even aircraft. …. Small lithium ion batteries are widely used in consumer electronics, but powering vehicles like a car or an aircraft is a much greater challenge. The 787, for example, has to generate 1.5 megawatts of electrical power, enough to light up several hundred homes. …. 

The problem, according to the MIT Technology Review, is that “because the electrolyte materials used are flammable, no lithium-ion batteries are completely safe.” And last April, the National Fire Protection Association warned that “as lithium-ion battery use increases, so do the concerns related to the fire-safety hazards of these devices.” Some experts believe the batteries have been oversold to the public. “Lithium ion batteries just won’t do the trick in the kind of mass vehicle applications that the environmental community is pushing for,” said Jon Entine, founder of ESG Media Metrics, a Cincinnati-based environmental consulting firm. “It’s kind of glib environmentalism or kind of enviro-romanticism,” said Entine, who is also a senior fellow at George Mason University’s Center for Health and Risk.

…. Before the Dreamliner’s troubles, a Chevrolet Volt caught fire during its crash tests by the National Highway Traffic Safety Administration in May 2011. The agency gave the Volt a clean bill of health after an investigation. Then last year, electric truck manufacturer Smith Electric Vehicles warned potential investors that the lithium ion batteries “on rare occasions have been observed to catch fire or vent smoke and flames” in the firm’s prototype military trucks.

Even in the smaller consumer electronics applications, lithium ion battery fires were reported in Apple and Dell laptop computers in 2005 and 2006.

Reuters:

U.S. NTSB reviewing whistleblower claims in 787 case

The U.S. National Transportation Safety Board is looking at issues raised by more than one whistleblower as it investigates battery failures that have grounded the global fleet of 50 Boeing Co 787 Dreamliners for a week.

Michael Leon, one of the whistleblowers, said he spoke with an NTSB investigator this week and gave him extensive materials about his claim that he was fired around six years ago for raising safety concerns about Securaplane Technologies Inc., an Arizona company that makes chargers for the highly flammable lithium-ion batteries at the heart of the probe. In an interview with Reuters on Wednesday and in earlier court papers, Leon said Securaplane was rushing to ship chargers that by his assessment did not conform to specifications and could have malfunctioned. …..

…… Securaplane hired Leon as a senior engineering technician in 2004, the same year it won the contract to work on the 787 parts. The company, which was taken over by Meggitt in April 2011, makes three important battery-related systems for the 787 as a subcontractor to France’s Thales SA .

The lithium-ion battery is made by Japan’s GS Yuasa Corp, while Thales is responsible for electric power conversion on the 787, the world’s newest and most electricity-driven airliner. The auxiliary power unit (APU), which powers the airplane’s systems when it is on the ground, is built by a unit of United Technologies Corp.

The Securaplane spokeswoman declined to give details about the value of the company’s contract with Thales for work on the 787, saying those details were confidential. She said she was not aware of any other whistleblower case filed by a Meggitt or Securaplane employee.

Securaplane said it makes two battery charging units used on the 787, one for the APU battery in an aft bay, and one for the main ship battery used in a forward bay, which provides backup power for flight critical controls. …

…… Leon said he refused to ship chargers that he believed had short-circuits, but company officials told him they needed to rush out the orders or risk losing the contract with Thales.

24 aircraft grounded as persistent teething problems with Boeing 787 Dreamliner are impacting operations

January 16, 2013

UPDATE!

Now all Boeing Dreamliners in US and India have also been grounded indefinitely. Boeing’s ongoing dispute with unions will not make matters easier. This could be an expensive delay for Boeing.

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Japanese airlines are grounding all their Boeing 787 Dreamliners for inspection: ANA are grounding 17 aircraft and JAL is grounding a further 5 to add to the 2 already undergoing inspections. Last week the Federal Aviation Authority ordered a review of the design procedures as well as the manufacturing processes for the Dreamliner but they stopped short of ordering any general grounding of the aircraft. But this review comes just 15 months after the plane was certified by the FAA which is not very usual. The Japanese Transport Ministry has also set up a team to review the design and manufacture of the Dreamliner. Official government reviews are a major setback for airline operations since it shifts the onus onto the airlines and the manufacturer. They now have the daunting task of  “proving a negative” – of “proving” that nothing can occur –  before operating “as normal.

Air India has 6 Dreamliners but so far neither the airline nor the Indian Government have grounded any planes but are following the lead of the US authorities. The other airlines with the 787 in operation are Ethiopian Airlines, LAN Airlines, LOT, Qatar Airways and United Airlines. In all Boeing has some 850  Dreamliners on order.

So far the problems with the Boeing 787 Dreamliner are system problems (electrical and fuel systems) and there is nothing to suggest that the use of composite materials for the  fuselage or that any other structural issues are of concern. But, of course, structural problems take longer to show up.

This baby is going to give Boeing many more sleepless nights.

Dreamliner still having electrical teething problems as fire breaks out in empty JAL aircraft

January 8, 2013

UPDATE! 9th January

(Reuters) – Boeing Co’s 787 Dreamliner jet suffered a third mishap in as many days on Wednesday, heightening safety concerns after a string of setbacks for the new aircraft.

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Some 800 Boeing Dreamliners have been ordered so far and the first Dreamliner entered commercial operation with ANA in late 2011. That was about 3 years later than planned following a string of production issues. The Dreamliner has had a number of teething problems – mainly with electrical systems. Qatar Airways had to correct electrical faults and a United Air flight had to make an emergency landing  because of power failure. The FAA had also found some faults with the installation of the fuel system and had called for all Dreamliners to be inspected. Now a JAL aircraft has had a battery fire after landing at Boston – but there were no passengers on board at the time.

A Japan Airlines Boeing 787 Dreamliner jet aircraft is surrounded by emergency vehicles while parked at Logan International Airport in Boston. AP/Stephan Savoia

But the problems experienced so far do not seem to be anything extraordinary compared  to what could be expected with a brand new aircraft. The Dreamliner has not – unlike the Airbus A380 – experienced any serious engine problems so far. Another year of flying will probably see all the initial bugs ironed out. Then it will probably take another 5 or 6 years before any generic design issues – due to materials choices for example – start showing up.

NY Times:  A Boeing 787 Dreamliner aircraft with no passengers on board caught fire at Logan International Airport in Boston on Monday when a battery in its auxiliary electrical system exploded, officials said.

A mechanic inspecting the Japan Airlines jet discovered smoke in the cockpit while performing a routine postflight inspection and reported it to airport authorities around 10:30 a.m. Eastern time, said Bob Donahue, the fire chief of the Massachusetts Port Authority.

A fire crew responded and determined that a battery used to power the plane’s electrical systems when the engines are not running had exploded, Chief Donahue said. The mechanic was the only person on board the plane when the smoke was discovered, and no one was hurt by the fire, he added. ….

…… The 787 relies heavily on electrical power to drive onboard systems that in other jet models are run by air pressure generated by the engines. It also experienced electrical problems during testing that prompted a redesign.

The Dreamliner has experienced a string of problems with its electrical systems in recent weeks. On Dec. 4, a United Airlines flight from Houston to Newark made an emergency landing after it appeared that one of its power generators had failed.

On Dec. 13, Qatar Airways said it had grounded one of its three 787 jets because of the same problem United experienced. On Dec. 17, United said that a second 787 in its fleet had developed electrical problems.

Massive shale oil reserves in Utah and Colorado

November 14, 2012

The reserves are massive but not yet technologically exploitable. I have little doubt that human ingenuity will prevail and before too long. It is just a matter of time and engineering before this oil starts flowing.

Malthusians must be gnashing their teeth as “Peak Oil”  is pushed back – again – by a few hundred years!!

ABC News:

Drillers in Utah and Colorado are poking into a massive shale deposit trying to find a way to unlock oil reserves that are so vast they would swamp OPEC.

A recent report by the U.S. Government Accountability Office estimated that if half of the oil bound up in the rock of the Green River Formation could be recovered it would be “equal to the entire world’s proven oil reserves.”

Both the GAO and private industry estimate the amount of oil recoverable to be 3 trillion barrels.

“In the past 100 years — in all of human history — we have consumed 1 trillion barrels of oil. There are several times that much here,” said Roger Day, vice president for operations for American Shale Oil (AMSO).

The Green River drilling is beginning as shale mining is booming in the U.S. and a report by the International Energy Agency predicts that the U.S. will become the world’s largest oil producer by 2020. That flood of oil can have major implications for the U.S. economy as well as the country’s foreign policy which has been based on a growing scarcity of oil. …..

The cost of extracting the Green River oil at the moment would be higher than what it could be sold for. And there are significant environmental obstacles. ….. Nevertheless, the federal government has authorized six experimental drilling leases on federal land in an effort to find a way to tap into the riches of the Green River Formation. …….

Getting oil from Green River shale is a different proposition than getting gas and oil from other sites by using the controversial method of “fracking,” fracturing the underground rock with pressurized, chemical-infused water.

The hydrocarbons in Green River shale are more intimately bound up with the rock, so that fracking cannot release them. The shale has to be heated to 5,000 degrees Farenheit before it will give up its oil. ….

Now Toyota sees sense and backs away from all-electric cars

September 24, 2012

The hype about electric cars is just one more example of environmental alarmism leading to bad decisions. The list of “bad decisions” made to appease environmentalism is long and getting longer. Wind power before its time and solar power before it  was commercially viable have only helped to increase the costs to the consumer but they have been a windfall for those who have managed to “milk” the subsidies. The electric car fiasco is no different. Billions have been wasted in subsidising something that is not commercial and in trying to skew the market in the hope of artificially creating a demand where there is none. But a few have managed to live very well off the subsidies. Some day electric cars may well become commercially viable and when they do it will not be because an environmental lobby group or a government  merely wished for it but because the technology and supply network then will be sufficiently developed to offer the consumer a superior product at a reasonable price.

The simple reality is that:

  • electric car batteries are still too heavy and take too long to charge
  • the range they provide is too short
  • the cars are too expensive

More importantly the ostensible reason for subsidising the technology  – as being for the cutting of carbon dioxide emissions to try and reverse natural climate change –  is both based on a false premise and futile.

“The current capabilities of electric vehicles do not meet society’s needs, whether it may be the distance the cars can run, or the costs, or how it takes a long time to charge,” said, Uchiyamada, who spearheaded Toyota’s development of the Prius hybrid in the 1990s.

Reuters reports:

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When will my computer know who I am?

September 18, 2012

Passwords, Userid’s and 4-digit codes are the bane of my life and I am still waiting for the computer which knows – uniquely and reliably  – whenever I happen to be using it. I am probably very average when I find that I have twelve different passwords, five different Userid’s and eight 4-digit codes that I use regularly and which – so far – I generally manage to keep separate in my memory. As I get older I expect I shall have increasing difficulty in remembering and keeping track of these. I find that – already – I sometimes refrain from taking on new commitments, buying new on-line services, joining new groups or registering at new sites if I need to find yet another password to be remembered. The need for defining and remembering new passwords is now – in fact – limiting the extent to which I use the on-line world.

New models of computers, tablets and smart phones are released – it seems – every other day. For at least the last 10 years the possibility of personal identification of the user by the device has promised much but has not yet delivered. I look forward to each release eagerly only to be disappointed each time.  Each new device has new features. It can do more, remember more, is faster or more “intelligent” or has a larger memory but none has the capability to know – for sure –  who I am.

One of these days I will be able to switch on my device (computer, phone whatever) and it will know that it is “I” – and nobody else – who is operating the device and I will need no further passwords or pin-codes to access any connection or my account at any site through that particular device. That’s the dream.

In the meantime the search goes on but I am not sure that this aspect of “customer-friendliness” is very high up on the priority list. But it should be. I foresee a new explosion in on-line usage when a secure method of personal identification becomes available. PC manufacturers have been trying to use fingerprint recognition for some time, Intel is working on palm recognition and Apple is working on face recognition. Keystroke authentication, retina prints and other biometric or behavioural patterns have also been suggested. But before my dream is realised, the manufacturers have to hone in on a few methods which have then to be exhaustively tested before being widely accepted. New international standards will have to be agreed and  established before the banks and insurance  and credit card companies accept the identification method as being sufficiently secure.

It remains a dream – but passwords have to become obsolete sometime and I do hope it happens within the next two years.

Apocalypse Not!

August 18, 2012

I have a theory that within a hundred years we will be bemoaning the lack of world population. The collapse of society will be forecast as an impending catastrophe as the total world population stabilises at less than 10 billion with the proportion of the young working population decreasing relative to the increasing numbers of the “leisured” population.  And that apocalypse too shall not come to pass.

Matt Ridley has a new essay in Wired which needs to be read. Just some excerpts below:

Apocalypse Not: Here’s Why You Shouldn’t Worry About End Times

When the sun rises on December 22, as it surely will, do not expect apologies or even a rethink. No matter how often apocalyptic predictions fail to come true, another one soon arrives. And the prophets of apocalypse always draw a following—from the 100,000 Millerites who took to the hills in 1843, awaiting the end of the world, to the thousands who believed in Harold Camping, the Christian radio broadcaster who forecast the final rapture in both 1994 and 2011. ………

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Human bird-wings?

March 22, 2012

Update: Just another fake

Smeets is actually Dutch filmmaker and animator Floris Kaayk, who worked in collaboration with media production company Revolver on the “media art project” that took the world by storm.

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Real or a fraud?

Dutch engineer flies by flapping his own wings

It’s been a dream of scientists ever since the days of Leonardo DiVinci and even Icarus — human-powered flight. But where some of the greatest scientific minds in history have failed, did Jarno Smeets, a mechanical engineer from the Netherlands, finally succeed in building a pair of working human wings?

The above video showing human flight was created by Smeets, and uploaded to YouTube earlier this week. It’s generating an incredible amount of controversy — half from people stunned that such a feat was accomplished, and half from people convinced the feat was a fraud.

The Age of Gas: China has enough shale gas for 200 years

March 2, 2012

The Age of Gas is not just dawning  but is well and truly underway with China revealing reserves sufficient for 200 years. At 25 trillion cubic meters (875 trillion cubic feet) of recoverable reserves these could be almost twice the recoverable reserves in the US.

As shale gas comes into play all over the globe there is going to be a run on large gas turbines for power generation. Gas turbine manufacturers (and the big 4 are GE, Siemens, Alstom and MHI) can expect a sellers market within 2 or 3 years as the economic recovery pressurises generation capacity.

File:GasDepositDiagram.jpg

from Wikipedia

The Telegraph: 

China is planning an investment blitz to unlock its vast reserves of shale gas, convinced it can match the energy revolution under way in the US and meet a significant part of its fast-growing fuel needs.

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Benefits of shale gas are real and measurable

January 18, 2012

The advent of shale gas has moved the peak of “peak-gas” into the future by some 250 years. This together with the fact that gas-fired power plant have the shortest construction times and the lowest investment costs of any form of power generation  provides the possibility to hold down electricity generation costs. The increase in generation costs in recent times has been the natural consequence of the subsidy regimes for wind and solar power plants and the opportunistic rush to renewable power. Huge fortunes have been made by “green” developers as the subsidies have been milked – but consumers have only seen rising electricity prices.

Bloomberg  reports:

A shale-driven glut of natural gas has cut electricity prices for the U.S. power industry by 50 percent and reduced investment in costlier sources of energy. With abundant new supplies of gas making it the cheapest option for new power generation, the largest U.S. wind-energy producer, NextEra Energy Inc. (NEE), has shelved plans for new U.S. wind projects next year and Exelon Corp. (EXC) called off plans to expand two nuclear plants. Michigan utility CMS Energy Corp. (CMS) canceled a $2 billion coal plant after deciding it wasn’t financially viable in a time of “low natural-gas prices linked to expanded shale-gas supplies,” according to a company statement.

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