Canadian Company Plans Solar-Powered Heavier-Than-Air Airships
savuporo writes "By crossing airships with airplanes, Solar Ship is planning to build a craft that can carry heavy loads long distances with a tiny carbon footprint. Filled with helium, they soak up rays from the sun to provide the energy for forward motion and fulfill its original design challenge – carry 1,000 kilograms (2,205 lbs) of payload 1,000 kilometers (621.4 miles). The craft is heavier than air, and uses a combination of helium filling its interior and its lifting body delta wing shape to stay airborne. Solar Ship shows plans for a range of different size craft for different duties."
Oh the humanity...
"A door is what a dog is perpetually on the wrong side of" - Ogden Nash
http://www.johnmcphee.com/deltoid.htm
Why is Snark Required?
Helium is the least reactive noble gas, and much lighter than air. Common sense says that it will rapidly leave our atmosphere. I dont remember the exact details (I had this brought up in a class once), but it was some combination of the ascending helium reaching escape velocity and solar wind peeling off anything that might try to settle in a super high orbit. The impending heium shortage is a well known problem, and a significant part of the reason I get an overwhelming urge to punch clowns in the face every time I see them handing out balloons.
And frankly, almost every alternative energy solution has serious if not fundamental flaws. If they didn't, we would already have been using them. Seriously, this "you're all just pessimists who work for oil companies and kick puppies" crap is getting old. Going off half cocked with some doe-eyed fantasy of a technotopian future filled with helium blimps and solar farms the size of small nations isn't going to fix anything. It took a hundred years and a lot of ignorance to get stuck in this energy policy quagmire, and logic dictates it will take twice that amount of time to get back out. You dont extract yourself from quicksand by thrashing about in a panic.
But the same problems would face the designers of a large airship. The helium may not leak through the skin itself, but it will be challenging to keep all the seams tight enough to prevent leakage. Also, after a while, microscopic cracks could develop due to flexing and bending in the wind.