Newer posts are loading.
You are at the newest post.
Click here to check if anything new just came in.

September 21 2014

Sun and Wind Alter Global Landscape, Leaving Utilities Behind -

Sun and Wind Alter Global Landscape, Leaving Utilities Behind -

http:// 2014/ 09/ 14/ science/ earth/ sun-and-wind-alter-german-land scape-leaving-utilities-behind.html?_r=0

HELIGOLAND, Germany — Of all the developed nations, few have pushed harder than Germany to find a solution to global warming. And towering symbols of that drive are appearing in the middle of the North Sea.

They are wind turbines, standing as far as 60 miles from the mainland, stretching as high as 60-story buildings and costing up to $30 million apiece. On some of these giant machines, a single blade roughly equals the wingspan of the largest airliner in the sky, the Airbus A380. By year’s end, scores of new turbines will be sending low-emission electricity to German cities hundreds of miles to the south.

It will be another milestone in Germany’s costly attempt to remake its electricity system, an ambitious project that has already produced striking results: Germans will soon be getting 30 percent of their power from renewable energy sources. Many smaller countries are beating that, but Germany is by far the largest industrial power to reach that level in the modern era. It is more than twice the percentage in the United States.

#énergie #énergie_renouvelable #bilan_énergérique

April 06 2014

"The hunt for the missing Malaysia Airlines plane has shifted below the surface, with the "towed pinger locator" deployed on Friday to search for the black box before its batteries expire."

I wish them luck with that. From experience on the SAA295 'Helderberg' job I know that they've got a sub-minimal chance of finding that pinger in the next week or two. This wreck will be found acoustically, that's almost for sure, but it'll be by low frequency (100kHz or better) side-scan sonar --- or perhaps by pp-magnetometer... Almost certainly not by a couple of pinger locators and most certainly not by a fleet of photogenic aeroplanes sent on a photo-opportunity in a show-biz charade to assuage the PR efforts of three politicians and to satiate half a hundred rolling-news networks on telly.

A comparison with the Helderberg job is quite informative, mostly for its differences rather than its similarities. The water depth was broadly similar, circa four and a half Klicks if I remember correctly in that case. We never found the pinger(s). Not acoustically, anyway. After the thirty days plus ten percent we gave up dragging pinger locators around the hydrospace of the survey ground. We had a list of the co-ords of hundreds of false positives because we were under orders from bozos ashore to crank the receiver gain up the the max, but nothing of any use.

We did eventually find the CVR, replete with dead pinger, but that was more or less by accident when picking up a piece of wreckage with which it was entangled. That thing of quasi-accidental discovery of the recorders is actually quite common. Same thing happened with Valujet in the swamp and yet again with TWA800. In both of those cases the {insert colo(u)r here} boxes were found when someone trod on them. We never did find the SAA295 FDR, despite the fact that it had been affixed to the aircraft immediately adjacent to the CVR. Hell, they never found the recorders from the two Boeings in lower Manhattan -- and that was a case where they knew to within ten metres or better the very exact three dimensional co-ordinates of the impact points and they had reps from Boeing subbies searching every scoopful of debris for the thick end of a year.

We had the same problem, in the case of SAA295, of people ashore repeatedly switching the target area(s) as is being experienced by the poor sods at the sharp end of the MH370 search. We dreaded the hour after the end of the morning 'prayer meeting' conference calls because we knew that someone ashore would get his pencil out and make up a new box, usually in a place which could not be reconciled with any of the previous ones. Out of earshot of the shadowy civilian guy from Virginia who was leading the search from below and behind, we used to refer to those boxes as "your target for tonight".

Same thing is happening with MH370.

If such a bet were enforceable, and if I could find any mugs foolish enough to be a counter-party to the bet, I'd happily and profitably give odds of 100:1 against them finding the pinger with a pinger locator. They've got, at most, a couple of weeks, with only a couple of ships, neither of which (incredibly), is simultaneously towing a 100 kHz side-scan sonar.

Even with vane depressors and drag reducing devices such as Hairy Fairy vortex interruptors on the lower quarter of the tow-cable, they'll be lucky to make much more than three or four knots of waterspeed. The end of line turnarounds are an absolute bitch. In 87/88 we quit after doing a thousand square miles and we had the twin advantages of knowing quite accurately where the aircraft stoofed in and we had our tools in the water (titter ye not in the cheap seats!) at the locus within a week of the crash. These poor sods have none of those advantages and they are being led by an Air Chief Marshal who has reversed seamanship and placed the surface ships at the disposal and in the service of the air fleet instead of the other way around.

This evening, by any timezone, we enter the fourth week of the search and they haven't found so much as a satay stick from that aeroplane. If anybody has learned anything from the AF447 fiasco, then surely they must have learned that becoming fixated on theoretical back calculations of the impact point from subsequently discovered patches of identified and confirmed flotsam can lead to unwise people becoming target fixated on wrong locations.

With Helderberg we had two major advantages. One was that the flight deck crew had been aviating;navigating;communicating right up until very few (less than five) minutes before impact and had been giving copious amounts of positional and intention information to ATC. Very different to MH370. The other massive advantage we had was that the first confirmed patch of flotsam from the wreck was found, and its co-ordinates measured, just 12 hours after impact. The second patch was located just 12 hours after that.

Given the non-linearity of the mathematics of oceanic dispersal, any positional information from that elusive MAS satay stick, even if found during the fourth rather than fifth week, is likely to confuse rather than clarify the impact location. It'll tell you that the wreck lies in the SouthEastern quadrant of the Indian Ocean and not at some fairytale Dawson Field in one of the 'stans, but we pretty much know that anyway.

The ugly truth, quite certainly unpalatable to the two prime ministers and 230 sets of bereaved relatives, is that the best chance of finding the wreckage and a few fragments of human remains lies in a very long hard slog with side-scan sonar. It's a search which is likely to take very large fractions of a year or, more likely, multiple years. Enthusiasm for funding such a prolonged and open-ended search will surely dry up, as it always does, when the bills start flowing in and become overdue for payment.
Malaysian Airlines MH370 contact lost - Page 462 - PPRuNe Forums 2014-04-04
Reposted bymofo mofo
Chronus says:
"NBC News Reports: Malaysia’s prime minister says the missing plane was airborne for seven hours and only could have been taken down with someone at the controls.

We all know this has become a criminal investigation, where the passangers are no longer under investigation, but the crew are.

Given the two media announcements above one would be led to conclude that the prime suspects are the crew.

So it seems pointless at this juncture to hypothesise on fire and technical mulfunction.

The question must be, on what basis of factual or circumstantial evidence or a combination of both, did the Malaysian authorities decide to pursue this as a criminal investigation."


Who knows - maybe they feel the need to be seen to be doing something? Though fair enough to investigate what you can from what little you have when there is precious little else available to you. The term criminal investigation probably means no more that that side of it is a police one and their motives to be seen to "solve" this could be questioned by some.

Not only is it pointless to hypothesise on fire and technical malfunction, it is pointless to hypothesise on anything. We, the public, are unaware of what is known, press/media reports are high on drama but short on concrete facts. This is a very unprecedented event and until the investigators have some data no-one can know what set of unusual circumstances prevailed on that flight. Why the need of some to put labels on at this stage? To be able to say "I knew all along"?

I am most uncomfortable with what, to me at least, appears to be a suggestion before any real evidence is available that the crew are under criminal investigation. At this stage surely ALL investigation is routine and fact finding.
Malaysian Airlines MH370 contact lost - Page 473 - PPRuNe Forums

March 26 2014


Online discussion forum for pilots - Malaysian Airlines MH370

- technical details and on the lost plane, professional insights and comments on the ongoing search for the debris

February 20 2013

February 19 2013

October 31 2011

Play fullscreen
Naomi Klein - The Paradox of Crisis - Youtube video ~25min

Uploaded by TransitionTownTotnes on Mar 24, 2011

Looking at the various crises going on around the world, what are the challenges ahead and the opportunities for us as a community? Can we meet these challenges skillfully? World-renowned activist Naomi Klein, author of 'No Logo' and 'The Shock Doctrine', on a rare visit to Totnes, hosts an evening of discussion and participation. All welcome
Reposted bydatenwolfcheg00

August 20 2011

Older posts are this way If this message doesn't go away, click anywhere on the page to continue loading posts.
Could not load more posts
Maybe Soup is currently being updated? I'll try again automatically in a few seconds...
Just a second, loading more posts...
You've reached the end.

Don't be the product, buy the product!