Monday 29 June 2015

Solar Impulse 2 leaves Nagoya, Japan, for Hawaii


Credit: Solar Impulse

The story so far:

09 March 2015 — left Abu Dhabi on the first solar-powered round-the-world flight
http://hhg2tech.blogspot.com.au/2015/03/solar-powered-round-world-flight.html

21 April 2015 — a series of relatively short flights lead to a landing in Nanjing, China

30 May 2015 — after waiting in Nanjing for suitable weather, took off for Hawaii — expected flight time, at least 120 hours (5 days & nights), non-stop. A change in the weather forced a landing in Nagoya, Japan

28 June 2015, 18:03 UTC — Solar Impulse 2 took off from Nagoya. Next stop Hawaii.

29 June 2015, 03:17 UTC — passed the point of no return

http://www.euronews.com/2015/06/29/heading-for-hawaii-solar-impulse-ii-takes-off-for-the-most-risky-leg-of-its/ / Swiss pilot pilots first ever attempt fly around the world propelled the Sun AndrĂ© Borschberg compatriot Bertrand Piccard take turns piloting single seater seat Solar Impulse 2 21,747 miles 35,000 km kilometre 12 legs including gruelling five- to six-day stints across the Atlantic Pacific oceans entire journey will take five months Borschberg took the controls takeoff take off take-off Al-Bateen executive airport Abu Dhabi early on Monday first destination Muscat in Oman pilots roughly 250 hours each inside narrow cockpit no oxygen temperature control temperatures outside range between -40 degrees C to 40°C degrees Celsius falling asleep flight need constant attention Piccard Borschberg survive 20-minute naps every two to four hours pilots will practise yoga stave off the physical discomfort remaining confined seat for days at a time Borschberg biggest challenge maintaining concentration Piccard psychiatrist team 1999 first circumnavigated globe non-stop balloon taught techniques of self-hypnosis meditation maintain concentration time duration in the present moment the only way is to be present almost a spiritual experience entire journey circumnavigating Earth in a family car aircraft weighs the same as a Volvo sedan comparable speeds SI2 top speed 87m/h 140km/h pilots conserve battery power limiting plane half cockpit only slightly larger average car contain life support systems food oxygen supplies reclining pilot’s seat triples bed chair toilet fly both day and night no fuel powered by 17,000 solar panels set on its wings wider Boeing 747’s fuselage 633kg bank of lithium batteries quarter weight store energy run motors overnight journey early days intercontinental flight enormous speed range jet engines Qantas fly Kangaroo Route Sydney to London hopping Darwin Singapore Kolkata Karachi Cairo Tripoli en route Borschberg success Solar Impulse project first solar-powered plane fly through the night first to fly between two continents primitive step toward zero-carbon jumbo combustion fossil fuels dominated powered flight 19th century dirigible aviation burns the most carbon per passenger per kilometre of any mode of mass-transport and, despite efforts to limit emissions, remains the fastest growing anthropogenic source of greenhouse gases sector climate change toughest major emissions source to decarbonise solar flight seeks remains decades away Wright Brothers Charles Lindbergh deputy editor Aerospace magazine Bill Read solar flight commercial flights solar cells generate power fly Solar Impulse fly using solar power constructed very light weight light-weight lightweight huge wingspan solar cell technology power source aircraft advances project real-world uses today fly Sun day and night build an aircraft extremely energy efficient technologies energy efficiency used in your home your car appliances four motors power aircraft generate heat energy efficiency single cheapest way reduce carbon emissions across the world technologies challenge energy environment pollution natural resources /

Lexus hoverboard — No, we’re not selling this, but can we interest you in a car?


Lexus hoverboard — hint: that's condensation, not smoke — liquid nitrogen inside (-321 degrees Farenheit, -196 Celcius)
Credit: Lexus/Wired

Scepticism expressed in my previous post about the Lexus hoverboard has received some support:
http://www.wired.com/2015/06/lexus-hoverboard-slide/?mbid=nl_062615

Still no evidence that it can support more than its own weight.

More about how it works


Quantum levitation race track
/ Lexus short teaser video Slide hoverboard Back to the Future II dreams science fiction how it works hoverboard hype skepticism bamboo carbon fiber skateboard, emitting wisps condensation smoke levitates concrete surface foot approaches mount ride cut away convincing hoverboard hoax Funny or Die promotion BTTFII Lexus device magnetic levitation lift-off levitating tease floating on top of concrete Mike Norman Director Materials Science Division Argonne National Lab surface trickery magnets iron steel mixed in just underneath concrete Lexus hoverboard how it works magnets physics Lexus hoverboard superconductors magnets repel the force of gravity fancy skateboard rider above the ground Hendo hoverboard Kickstarter project physics Lexus superconductor magnetic field superconductor oscillating magnetic field Eric Palm Deputy Laboratory Director FSU’s National High Magnetic Field Laboratory Meissner effect magnetic field near superconductor induces electric current superconductor creates image magnetic field other side superconductor create current superconductor currents don’t die away don’t need oscillating magnetic fields magnet levitates above superconductor superconductor levitates above a magnet technical maglev train similar principles achieve speeds Shanghai’s Transrapid over 300mph superconductor locked in a magnetic field wisps of smoke condensation Lexus board liquid nitrogen cooling the superconductors below transition temperature becomes superconducting cold -321 degrees Farenheit very cold liquid nitrogen byproduct of the steel industry pretty inexpensive liquid nitrogen runs out superconductors warm up interaction between superconductor magnet repels the force of gravity allows levitate levitation concrete video something magnetic human-bearing board really is like you’re floating ridden the Lexus hoverboard Back to the Future Lexus spokesperson Maurice Durand mass produce a hoverboard SLIDE part marketing campaign unannounced car surprise viral sensation Lexus hoverboard scientific breakthroughs not-quite-concrete maglev hoverboard paved with magnets levitation hovering /