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Showing posts with label Urban Transport. Show all posts
Showing posts with label Urban Transport. Show all posts

Tuesday, 13 August 2013

Radical new icebreaker will travel through the ice sideways


The NB 508 (aka the Baltika) crashes through the ice side-on (Image: Arctech Helsinki Ship...
The NB 508 (aka the Baltika) crashes through the ice side-on (Image: Arctech Helsinki Shipyard)
Given that icebreakers clear a path for other ships by traveling through the ice head-on (or sometimes butt-on), then in order for one of them to clear a wider path, it would have to be wider and thus larger overall ... right? Well, Finland’s Arctech Helsinki Shipyard is taking a different, more efficient approach. It’s in the process of building an asymmetric-hulled icebreaker that can increase its frontal area, by making its way through the ice at an angle of up to 30 degrees.
Arctech refers to the ship as “Icebreaking rescue vessel NB 508,” although according to a report in New Scientist, it’s also known as the Baltika. It’s being built for the Russian Ministry of Transport, and will be used not only for icebreaking, but also for rescue and oil spill cleanup duties in the Gulf of Finland.
The ship will have a breadth of 20.5 m (67 ft) and a length of 76 m (249 ft) (Image: Arcte...
The ship will be moved along by three propulsors on its underside, each one of which can rotate 360 degrees. This means that it will have no problem moving forwards, backwards, or sideways. By hitting the ice at an oblique angle, it will be able to clear a 50-meter (164-foot)-wide path – not too shabby, considering the NB 508 itself will have a breadth of only 20.5 m (67 ft), and a length of 76 m (249 ft).
Three diesel generators will provide a total power of 9 MW and a total propulsion power of 7.5 MW. That should be enough to send it through ice up to 0.6 meter (2 ft) thick when moving sideways, or 1 meter (3.3 ft) when going bow- or stern-first.
The NB 508 was designed by Aker Arctic Technology, and has been under construction at Arctech since June 28. It’s scheduled for delivery to the client by next spring (Northern Hemisphere).

Thursday, 18 July 2013

Lightning's Electric Superbike takes 2013 Pikes Peak International Hill Climb

Carlin Dunne takes his Lightning Electric Superbike up Pikes Peak (Photo: Lightning Motorc...
Carlin Dunne takes his Lightning Electric Superbike up Pikes Peak (Photo:
The Lightning Motorcycle Electric Superbike seems to collect records as easily as falling off a log. It holds the current world records for fastest production motorcycle (189.086 mph / 304.304 km/h), and in a tweaked version for fastest electric motorcycle (215.960 mph / 374.554 km/h). While setting this latter record, the equivalent fuel mileage was still better than 50 mpg. Now it also holds the record for fastest ascent of Pikes Peak by an electric motorcycle. More importantly, it is the first electric motorcycle to win over a field of gas-powered motorcycles.
Carlin Dunne, who rode the Superbike to two-wheel victory at Pikes Peak this year, is no stranger to records himself. He has now won the Pikes Peak climb three years in a row, and owns the all-time record of nine minutes and 52.819 seconds for his performance in 2012 on a Ducati Multistrada 1200.
A beautiful beast of a bike (Photo: Lightning Motorcycle Corp.)
Of course, the Pikes Peak Climb is ideally suited to electric bikes. It takes place at altitudes that make regular gasoline engines cough and wheeze. But as the twists and turns of the course are a bit more difficult on a bike with a battery pack weighing about 250 pounds (110 kg), what the Superbike wins in the straights might be lost in the roundabouts. But not this year.
The Electric Superbike boasts an amazing set of specs. The motor is an internal permanent magnet Remy HVH250, an oil-cooled electric topping out at 10,000 rpm that pumps out in excess of 125 hp (92 kW). The exact value isn't specified, and the HVH250 can put out 230 hp (170 kW) at higher voltage than used in the Superbike. The basic Superbike comes with a lithium-ion battery pack that holds 12 kWh of energy at 370 volts, but a larger pack can be chosen. The total weight of the bike is just under 500 pounds.
Lightning claims 0 - 100 mph (160 km/h) time of 3 seconds, and acceleration from 100 mph to top speed (166 mph for the basic Superbike) in less than ten seconds.
The Lightning Electric Superbike concept drawing by Glenn Kerr (Photo: Lightning Motorcycl...
The Superbike uses a monocoque design by Glenn Kerr, wherein the battery pack and motor serve a dual function as the primary stressed elements of the chassis, a design whose equivalent appears in most large gas-powered bikes. The swingarm of the Superbike is directly connected to the rear of the motor.
Lightning's Superbike is equipped with user-programmable regenerative braking, allowing the batteries to be charged whenever the throttle is closed and the brakes applied. The effect on the ride is said to closely replicate the engine braking effect characteristic of gas-powered bikes. The programming allows the user to balance the braking between maximum range and driving style.

Wednesday, 17 July 2013

Peugeot targets urban commuters with AE21 Hybrid electric bike

Peugeot's AE21 Hybrid electric bike previewed last week at the 'What's Next' show
Peugeot's AE21 Hybrid electric bike previewed last week at the 'What's Next'
Peugeot actually began manufacturing bikes in 1882 and only branched out into internal combustion engine-powered automobiles in 1890 after dabbling with a three-wheeled steam-powered car the previous year. The car and bike divisions were split in 1926, with Cycles Peugeot building up an impressive racing heritage thanks to the sponsoring of various events and riders. In 2011, Peugeot revealed plans to revamp and relaunch the Cycles Peugeot brand in a partnership with Cycleurope.
Set to join Peugeot’s Allure line, the AE21 is a compact ebike aimed at urban commuters with a design that integrates a lithium-ion battery into the bike’s aluminum Clever Case frame. This also provides space at the center of the bike for a laptop bag and ABUS Bordo folding lock. To allow the bike to be stored against a wall, the bike also features folding handlebars and pedals.
The frame of Peugeot's AE21 Hybrid electric bike has space for a laptop and ABUS Bordo fol...
While the bike previewed at the “Who’s Next” show last week had the electric motor located in the front wheel, a Peugeot representative told us that when the bike is commercially launched in September at the Salon Du Cycle in Paris there will be two versions: one with the wheel hub motor and another with a belt-drive motor. Both will also be offered with two, as yet undisclosed, battery capacities. The battery can be recharged while still on the bike, or removed so it can be recharged inside while the bike waits outside.

Tuesday, 18 June 2013

Three-wheeled e-scooter offers added stability, but still leans into turns

The Electromobile City Scooter demonstrator vehicle, on display in Hannover
While electric scooters are considerably cheaper and easier to park than electric cars, many people are still put off by the idea of having to balance on two wheels. Germany’s Fraunhofer Institute for Industrial Engineering is addressing that problem, with its leaning three-wheeled Electromobile City Scooter.

Ordinarily, trikes can’t lean into turns. On the Fraunhofer scooter, however, the two air-sprung rear wheels are suspended separately, allowing them to move independently of one another. It’s a setup that we’ve seen at least once before, on the Deliver-E Trike.