Solar-pumped laser power transmission, a way to dramatically decrease launch costs?
in [Physics]
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From: Brad Guth on 6 Apr 2010 17:34 On Apr 6, 2:00 pm, William Mook <mokmedi...(a)gmail.com> wrote: > With four people facing outward in acceleration couches, that double > as escape/re-entry vehicles there are four layers - totaling 12 > people. Another three people are flight crew. Making five layers - > extended over the 50 foot payload section. > > The final stage re-enters base first and lands like a DC-X using the > MEMS rocket array. > > http://fti.neep.wisc.edu/~jfs/gif/dcx-launch-930818.gif > > For un-piloted operation this passenger section is replaced with a > nose section that releases the payload and then flies back. > > Payloads cost $4 million for vehicle rental and $16 million for > payload processing. Again, that sounds like another clean win-win, as well as best for our environment that's not exactly improving from the continued use of those SRBs. ~ BG
From: Brad Guth on 8 Apr 2010 23:44 On Apr 7, 7:55 pm, Falafel wrote: > On Wed, 7 Apr 2010 19:01:53 -0700 (PDT), Brad Guth > > <bradg...(a)gmail.com> wrote: > >It all sounds perfectly doable, and without a great deal of R&D. > > Howabout learning to trim your quotes? At times I do more trimming than most. However, use Google groups and it's nearly without limits. ~ BG
From: Brad Guth on 11 Apr 2010 16:13 It all sounds perfectly doable, and without a great deal of R&D. I especially like seeing this spiral welding pipe machine: http://zencharn.en.alibaba.com/product/253978808-209459346/spiral_welding_pipe_machine.html A sphere forming and welding machine would certainly become terrific, especially as performed within the ideal vacuum of a local zero delta- V space (at the very least worth 3e-18 bar as situated within Selene L1, although at times near 3e-21 bar could be more likely). How about we invent a metallic ion plasma spray, used to create extremely tough spheres, with as thin of shell as necessary, and out of the toughest and purest alloys imaginable. Each sphere could start off within a controlled magnetic field, making the shape as uniformly round as technically possible, and it's size or volume could be nearly unlimited. ~ BG
From: William Mook on 16 Apr 2010 07:33 On Apr 7, 10:01 pm, Brad Guth <bradg...(a)gmail.com> wrote: > It all sounds perfectly doable, and without a great deal of R&D. > > I especially like this spiral welding pipe machine: > http://zencharn.en.alibaba.com/product/253978808-209459346/spiral_wel.... > > A sphere forming and welding machine would certainly be terrific. How > about we invent a metallic plasma spray, used to create extremely > tough spheres, with as thin of shell as necessary? > > ~ BG Plasma spray is but one technique to achieve the end you seek http://nsmwww.eng.ohio-state.edu/ http://en.wikipedia.org/wiki/Stereolithography A stereolithography system using electroplating produces metal parts. These parts must be heat treated to be work hardened. But, they're very interesting! http://www.circuitree.com/Articles/Feature_Article/c740a14b3d7d7010VgnVCM100000f932a8c0____ An electrolyte bath containing metal ions in solution feeds a 'printhead' that moves in X,Y and Z coordinates, and plates metal onto a 'base' from solution. Since the metal is conductive, the 'base' can be the part itself, allowing complex structures to be formed, very similar to those produced by stereolithography.
From: Brad Guth on 18 Apr 2010 13:56
On Apr 16, 4:33 am, William Mook <mokmedi...(a)gmail.com> wrote: > On Apr 7, 10:01 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > It all sounds perfectly doable, and without a great deal of R&D. > > > I especially like this spiral welding pipe machine: > > http://zencharn.en.alibaba.com/product/253978808-209459346/spiral_wel... > > > A sphere forming and welding machine would certainly be terrific. How > > about we invent a metallic plasma spray, used to create extremely > > tough spheres, with as thin of shell as necessary? > > > ~ BG > > Plasma spray is but one technique to achieve the end you seek > > http://nsmwww.eng.ohio-state.edu/http://en.wikipedia.org/wiki/Stereolithography > > A stereolithography system using electroplating produces metal parts. > These parts must be heat treated to be work hardened. But, they're > very interesting! > > http://www.circuitree.com/Articles/Feature_Article/c740a14b3d7d7010Vg... > > An electrolyte bath containing metal ions in solution feeds a > 'printhead' that moves in X,Y and Z coordinates, and plates metal onto > a 'base' from solution. Since the metal is conductive, the 'base' can > be the part itself, allowing complex structures to be formed, very > similar to those produced by stereolithography. In the extreme vacuum of Selene L1 (at the very least worth 3e-18 bar), whereas it seems plasma spray or ion transfers of pure alloys into becoming perfect spheres, as such would achieve by far the most idealistic end results at the least cost. Such spheres could be as formed thin or robust and even a km radii if need be, because size, volume or mass has extremely little affect. ~ BG |