Comment: Re:so (Score 4, Informative) 186
UID 1 is CmdrTaco.
UID 1 is CmdrTaco.
I'll fill in the 5-digit spot; waiting for the 4-digit reply.
As for scaling up the device, one need only look here to see its tremendous potential.
"Tremendous potential"? It needs 40-70 kV to lift its massive weight of 6 grams - what does its power source weigh?
And given the knowledge that capacitors with solid dielectrics work in a vacuum we can see that with higher K dielectrics, more advanced materials, and an on board power source such as a hybrid engine, such technology could be put to use to create a vehicle suitable for air, land, sea, or space travel.
Given enough handwavium, anything's possible.
I'll get on board with ionocrafts when they can actually lift themselves AND their powersource. Currently, that's not even theoretically possible without handwaving.
Yes, lifters are fine. As a science fair project for school kids.
For propulsion on a plane/space vehicle? Not so much.
They produce about a gram of lift per watt. So far, payloads as massive as 60 grams have been lifted. Next stop, the moon?
Also, the voltages needed for them to function are extremely high, 20-50 kV for the science-fair models. That kind of apparatus weighs orders of magnitude more than the lift generated.
And, to add insult to injury, they produce ozone when in use.
Not a very green (or realistic) alternative to rockets.
Tidied up the quote a bit, since it's delectable:
Now it is clear that anyone working with rocket fuels is outstandingly mad. I don't mean garden-variety crazy or a merely raving lunatic. I mean a record-shattering exponent of far-out insanity.
There are, after all, some chemicals that explode shatteringly, some that flame ravenously, some that corrode hellishly, some that poison sneakily, and some that stink stenchily. As far as I know, though, only liquid rocket fuels have all these delightful properties combined into one delectable whole.
Also, I'd like to also state my thanks to imbaczek for posting the link, 40 pages in and it's a page-turner
if the last U.S Shuttle was dismantled recently by the Obama's goverment then what's the next?
How about this one?
Additionally, not everything launched is a manned vehicle. Those satellites have to get up there somehow too.
Use the link in the summary to download the draft of the book, chapter 2 should give you enough of an overview to know at least some things you can do with PDL.
How do you keep a hole 13,100 ft deep melted when the average temperature in summer is -30C (-22F), and in winter -65C (-85F)?
The warmest it ever gets is about -12C (10F) - that's a record by the way, the warmest ever measured at Vostok station.
It's not exactly a resort, you know:
The warmest recorded temperature at Vostok is -12.2 C (10.0 F), which occurred on 11 January 2002.[10]
The coldest month was August 1987 with a mean temperature of -75.4 C (-103.7 F) and the warmest month was December 1989 with mean of -28 C (-18 F).[9]
In addition to the extremely cold temperatures, other factors make Vostok one of the most difficult places on Earth for human habitation:
* An almost complete lack of moisture in the air.
* An average windspeed of 5 m/s (18 km/h) (11 mph), sometimes rising to as high as 27 m/s (97 km/h)(60 mph).
* An acute lack of oxygen because of its high altitude at 3,488 meters (11,444 ft).
* A higher ionization of the air.
* A polar night that lasts approximately 130 days, from mid April to late August,[13] including 80 continuous days of civil polar night (i.e. too dark to read, during which the Sun is over 6 degrees below the horizon.)
(source wikipedia)
13,100 feet to the lake.
Been digging since 1974. That's 344 feet a year, or a foot per day. Hell, *I* could have dug quicker than that!
Or maybe they just had lots of problems, costs, setbacks, etc. associated with a 13,000 foot-long drill through a substance that nobody has ever drilled 13,000 down through?
It's also in the middle of the Antarctic, just about, and almost 900 miles from the Scott-Amundsen base at the South Pole. It's where the coldest temperature on earth has been measured, a whopping -128F (-89C). I'd love to see anyone dig a foot *that* day!
Reply to undo bad moderation.
Say something you'll be sorry for, I love receiving apologies.