Solar-pumped laser power transmission, a way to dramatically decrease launch costs?
in [Physics]
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From: Pat Flannery on 2 Mar 2010 23:11 On 3/2/2010 2:28 PM, Damien Valentine wrote: > On Mar 2, 7:38 am, Fred J. McCall<fjmcc...(a)gmail.com> wrote: >> I am your father, Pat... > > "And Princess Leia is your sister! > And the Empire will be defeated by Ewoks! > And as a child, I built C3PO!" "And Yoda is your older brother, and you're going to end up looking like that." Pat
From: William Mook on 2 Mar 2010 22:52 On Mar 2, 5:20 pm, Damien Valentine <valen...(a)gmail.com> wrote: > On Mar 1, 4:01 pm, William Mook <mokmedi...(a)gmail.com> wrote: > > > No, someone else mentioned superlaser, I asked what it was, and was > > told it was a device from Star Wars. > > Ah, I see -- backtracking through a couple pages of argument. That > might be part of the problem; nobody understands what anybody else is > saying, because nobody can keep track of 100+ post threads. My > apologies! That's probably the point of the bazillion posts Fred & Co. made - it is the end result of their efforts that's for sure.
From: Brad Guth on 2 Mar 2010 22:56 On Feb 14, 11:47 pm, ASCEND Internet Marketing Group <ascend...(a)gmail.com> wrote: > On Dec 17 2009, 7:12 pm, "Jonathan" <H...(a)Again.net> wrote: > > > > > I like this idea, Relatively small mirrors would power > > the lasers, not huge solar cell arrays. The lasers would > > transmit their beams to other satellites that convert it to, and > > beam it down, as microwaves. No need for mile-size > > collectors in orbit. > > > Proceedings of the ASCE Earth&Space 2006 Conference > > April 2006 > > > Space Power Grid- Evolutionary Approach To Space Solar Power > > > "At a higher level, a direct solar-pumped laser could be used to > > convert solar energy on the LEO satellites, and transmit the laser > > beams to other satellites where the demand for power is greater > > (e.g., satellites over the dark side of earth). Recently, development > > of such lasers has reached a stage where efficiency of up to 38% > > has been shown. These satellites would receive incoming > > laser energy using their high-efficiency narrow-band photovoltaic > > cells, convert it to microwave, and beam it to Earth. This > > architecture has two advantages: the beaming to Earth > > could be done at optimal microwave frequencies for maximum > > transmission through the atmosphere, without requiring excessive > > transmitter size. The laser beams would propagate with very > > high efficiency, and require only small collectors. Thus the mass > > and overall cost per unit power of the system with this architecture > > may be substantially lower than the lower-risk option > > presented before." > > >http://www.adl.gatech.edu/archives/adlp06040601.pdf > > > And it should be noted, the SPS start up company, Space Energy Inc, > > maybe one of the more legitimate commercial attempts at SPS, has > > as one of it's technical advisors this guy, and his /current/ specialty > > might be a clue of things to come..... > > > Dr. Richard Dickinson > > > Space Energy Inc technical advisors > > > "Mr. Dickinson is one of the world's foremost experts on Wireless > > Power Transmission (WPT). President of OFF EARTH-WPT, > > Mr. Dickinson was Group Supervisor of the High-Power Transmitter > > Group at Goldstone and was NASA's microwave power transmission > > specialist on the Solar Power Satellite Reference System team.... > > > .....he is currently involved in studying and designing the solar pumped > > laser-power beaming phased array for interstellar missions."http://www.spaceenergy.com/s/TechnicalAdvisors.htm > > > s > > Dude, I've been promoting this concept for years. It's freakin' solid > state, lighweight. You can park one at a Lagrangian point and still > get tons of energy on a cost/kw basis. Earth-moon L1(Selene L1) is supposedly 97% With a sufficient Selene L1 halo orbit, this could become 100% ~ BG
From: Brad Guth on 5 Mar 2010 01:38 On Mar 3, 7:25 am, Fred J. McCall <fjmcc...(a)gmail.com> wrote: > William Mook <mokmedi...(a)gmail.com> wrote: > > :On Mar 2, 5:20 pm, Damien Valentine <valen...(a)gmail.com> wrote: > :> On Mar 1, 4:01 pm, William Mook <mokmedi...(a)gmail.com> wrote: > :> > :> > No, someone else mentioned superlaser, I asked what it was, and was > :> > told it was a device from Star Wars. > :> > :> Ah, I see -- backtracking through a couple pages of argument. That > :> might be part of the problem; nobody understands what anybody else is > :> saying, because nobody can keep track of 100+ post threads. My > :> apologies! > : > :That's probably the point of the bazillion posts Fred & Co. made - it > :is the end result of their efforts that's for sure. > : > > ANOTHER conspiracy theory, Mookie? You really should seek help for > these delusions of persecution of yours... > > -- > "Ordinarily he is insane. But he has lucid moments when he is > only stupid." > -- Heinrich Heine Are you suggesting that special interest groups (faith-based, cartel, cabal and/or political) don't have there trusty army of brown-nosed minions, spooks and moles hard at work? ~ BG
From: William Mook on 6 Mar 2010 07:14
On Mar 3, 10:25 am, Fred J. McCall <fjmcc...(a)gmail.com> wrote: > William Mook <mokmedi...(a)gmail.com> wrote: > > :On Mar 2, 5:20 pm, Damien Valentine <valen...(a)gmail.com> wrote: > :> On Mar 1, 4:01 pm, William Mook <mokmedi...(a)gmail.com> wrote: > :> > :> > No, someone else mentioned superlaser, I asked what it was, and was > :> > told it was a device from Star Wars. > :> > :> Ah, I see -- backtracking through a couple pages of argument. That > :> might be part of the problem; nobody understands what anybody else is > :> saying, because nobody can keep track of 100+ post threads. My > :> apologies! > : > :That's probably the point of the bazillion posts Fred & Co. made - it > :is the end result of their efforts that's for sure. > : > > ANOTHER conspiracy theory, Mookie? No. > You really should seek help for > these delusions of persecution of yours... You are confused - since you're projecting again. > > -- > "Ordinarily he is insane. But he has lucid moments when he is > only stupid." > -- Heinrich Heine |