October 31, 2010

Highest climbing wall in the world

Filed under: Architecture,Sports by Branko Collin @ 10:06 am

What do you do if your countryside is so flat, even the holes duck for cover? Why, build the highest climbing wall in the world of course.

Meet Excalibur, the 37 meter climbing extravaganza of Bjoeks Klimcenter in Groningen. The tower was built in 2004 by Polsar, also from Groningen—the same owners in fact.

(Link: Damn Cool Pics, which has some interesting photos of the tower made by cameras dangling from kites. This photo by Jan Lafeber, who released it into the public domain.)

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June 24, 2009

Kite your way from Amsterdam to New York in four days

Filed under: Aviation,Gadgets,Science by Branko Collin @ 10:05 am

The vehicle pictured above consists of a kite, a cabin and a keel, and should be able to take you across the Atlantic Ocean. The 157 m2 kite should produce enough power to make you go 90 km/h, the cabin seats two, and the keel makes sure you can actually steer the thing. The only catch is that the Hydrokite so far only exists in the minds of former astronaut and kite nut Wubbo Ockels and ten of his students at the TU Delft.

At 90 km/h you should be able to reach New York from Amsterdam in four days and 1 hour, which would break the old record with three hours, although Kennislink doesn’t say what record that would be (sailing? flying? kiting?).

Laurens Alblas, one of the students, told Kennislink that it will probably “take a couple of years before a control system for kites is developed. But once we have such a system, and assuming we can find sponsors, we will build the Hydrokite and we will try and break the record.”

(Link: Kennislink. Source image: TU Delft)

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August 6, 2008

Jan Akkerman concert on laddermill power

Filed under: Aviation,Music,Science by Branko Collin @ 9:05 am

Dutch guitar giant Jan Akkerman, former astrounaut Wubbo Ockels and Delft University all worked together to come up with this tiny concert in the Stadspark of Groningen last year. The reason? The electrical power was delivered by a prototype of a so-called Laddermill, an invention by Wubbo Ockels that is currently being developed at the University of Delft, and that consists of a chain of kite-wings that act as kites when going up, and as wings when going down.

Laddermills should be able to deliver from kilowatts to megawatts of power, enough to provide neighbourhoods and cities with electricity. According to the Guardian, laddermills are especially useful in The Netherlands, Denmark, the UK and Ireland “thanks to the high-speed jet stream.”

If you’ve never heard of Akkerman before, check YouTube for “focus hocus pocus.”

Via Engadget. See also this TU Delft page.

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