... Now look to see what is happening to the balloon size at various heights. Andrew Swallow...
9166
musthavemorestuff
musthavemore...
Feb 27, 2012 4:02 pm
All of our modern rockets take heavy advantage of ground support prior to launch. Topping off fuel, providing power, etc. this system will likely lose all...
9167
brooksn
bhn1700
Feb 28, 2012 1:24 pm
It will increase in size due to increased altitude due to reduced to the pressure. Which is accounted for in current high altitude balloon use and will need...
9168
brooksn
bhn1700
Feb 28, 2012 1:43 pm
Why would this system lose all the ground support provides? Every system from the ground can be moved to the upper platform. Plus there have been many non...
9169
Charles Radley
cfrjlr
Nov 23, 2012 6:34 pm
Existing Helium-3 market could finance lunar elevator today Helium-3 is abundant on the Moon but very rare on Earth ...
9170
Everett L Williams II
rarchimedesnew
Nov 24, 2012 9:29 am
I am for the idea, but $800 meg is insufficient for the project. I don't have the numbers for lift to Earth-Moon L1, but the Falcon Heavy can deliver 53,000 kg...
9171
Everett L Williams II
rarchimedesnew
Nov 24, 2012 10:52 pm
Sorry about that last...the variance in L1 is approximately 16,000 km rather than 60,000 km. I grabbed the difference between apogee and perigee for the Moon...
9172
David Herron
caverdaveuta...
Nov 25, 2012 4:19 am
... There are lots of other faulty assumptions built into this idea, beyond those listed in the earlier post. First of all, there are existing sources for...
9173
David Herron
caverdaveuta...
Nov 25, 2012 4:27 am
... This is also a misleading statement. Helium-3 is certainly a LOT MORE abundant on the moon, compared to it's abundance here on the earth, but that doesn't...
9174
Everett L Williams II
rarchimedesnew
Nov 25, 2012 9:43 am
Dave, You are most correct, but helium=3 is not the only advantage to having a Moon-L1 elevator. It would have great strategic and logistical use as we further...
9175
brooksn
bhn1700
Nov 25, 2012 2:04 pm
8 to 40 trillion to build a lunar space elevator? That seems on the high end, I could see 800 million to 8 trillion, even then I would guess on the lower end....
9176
Everett L Williams II
rarchimedesnew
Nov 25, 2012 9:22 pm
Brooks, We may have a bit of a language barrier here. I understand that some across the pond reverse billion and trillion, but I did not write trillion (10^12...
9177
brooksn
bhn1700
Nov 26, 2012 3:36 pm
Everett, No language barrier, like an idiot I just totally miscalculated your 10 to 50 times increase. My apologies. I promise I'm usually not so boneheaded....
9178
Everett L Williams II
rarchimedesnew
Nov 27, 2012 8:07 am
Brooks, I had more in mind the 50-100 meter size asteroids, as they can be hollowed out for an enormous amount of materials, while retaining sufficientg wall...
9179
brooksn
bhn1700
Nov 27, 2012 3:08 pm
Everett, I think the 3 to 5 meter asteroids offer several advantages to the 50 to 100 meter. First there would be far less opposition to moving a 5 meter...
9180
Charles Radley
cfrjlr
Nov 28, 2012 9:16 pm
... Markets consider upside pressures and downside pressures. Helium-3 is a very unusual commodity, in that it is completely synthetic, and the Helium-3 traded...
9181
Charles Radley
cfrjlr
Nov 28, 2012 9:22 pm
... I am not sure the point of your semantic argument. He-3 is very high value, and available more cheaply from lunar resources than terrestrial resources. ...
9182
Everett L Williams II
rarchimedesnew
Nov 29, 2012 7:35 am
You are assuming that your billion dollar figure resembles reality, but it does not. You are also assuming a lunar elevator in place to transport goods to and...
9183
brooksn
bhn1700
Nov 29, 2012 3:31 pm
On He3, I would agree there is demand, I believe most of that demand is research. Not always considered the most important endeavor, unfortuantely. I don't...
9184
Everett L Williams II
rarchimedesnew
Dec 1, 2012 9:13 pm
Brooks, As usual, it all devolves into an economic question. There are few near term revenue sources easily harvested from space other than satellite based...
9185
Jerry Irvine
01rocket@...
Dec 1, 2012 9:27 pm
This should be in the FAQ. ... -- Jerry Irvine, Box 1242, Claremont, CA 91711 <mail to: 01rocket@...> Nothing astonishes men so much as common sense and...
9186
Everett L Williams II
rarchimedesnew
Dec 3, 2012 9:38 am
Jerry. Nothing that I have written (other than the typing mistakes) is unavailable to anyone on this planet who does not have a fixed idea of what we should be...
9187
Everett L Williams II
rarchimedesnew
Dec 5, 2012 12:58 am
To all, I don't know whether this has been mentioned before, but there is one basic fact about solar power satellites in GSO. They are subject to eclipse by...
9188
brooksn
bhn1700
Dec 5, 2012 4:14 pm
Everett, I agree asteroids are the cheaper and more practical first step. I do think there is value in the moon and Mars and utilizing asteroids will make...
9189
brooksn
bhn1700
Dec 5, 2012 4:26 pm
Interesting on the He3 on asteroids, I'd agree SLS should probably be scrapped, and with today's budgets and Congress looking over everything it hopefully will...
9190
Everett L Williams II
rarchimedesnew
Dec 7, 2012 7:32 am
Brooks, We are somewhat at the mercy of the solar system in regard to candidates for capture, as natural orbital objects are either in high eccentricity orbits...
9191
brooksn
bhn1700
Dec 7, 2012 4:49 pm
Everett, I have not heard of a large 300 meter object in L5, I googled it but didn't find anything, any reference? I know about the Kordylewski clouds but...
Please contact me if you would like to help out with moderating the group. Thanks! Matt -- Matt Buchan matt.buchan@... [Non-text portions of this message...
9194
Jerry Irvine
01rocket@...
Jan 15, 2013 12:36 am
Not sure how new this is but . . . "At about 100 times the strength of steel and a sixth the weight, with impressive electrical conductive properties, carbon...
