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Luís F. Simões

NASA Turns to 3D Printing for Self-Building Spacecraft | Space.com - 4 views

www.space.com/sa-spacecraft-3d-printing.html

cubesat 3D printing NIAC

shared by Luís F. Simões on 17 Sep 12 - No Cached
LeopoldS liked it
  • SpiderFab Concept CREDIT: Unlimited Tethers
  • Luís F. Simões on 17 Sep 12
     
    CubeSats + 3D printing... for space. I'm surprised this isn't an ACT project :) more info: SpiderFab: Process for On-Orbit Construction of Kilometer-Scale Apertures
  • Dario Izzo on 18 Sep 12
     
    $100,000 from NASA's Innovative Advanced Concepts program to hammer out a design and figure out whether spacecraft self-construction makes business sense .... I can answer for 0$ ..... NO Infact the question is just stupid: a) spacecraft self-construction exist: then it is a no brainer to decide wether it makes business sense b) it does not: then there is no business
LeopoldS

Warp Drive More Possible Than Thought, Scientists Say | Space.com - 1 views

www.space.com/-interstellar-spaceflight.html

shared by LeopoldS on 19 Sep 12 - No Cached
  • LeopoldS on 19 Sep 12
     
    Sante, Andreas, Luzi, Pacome ... we need you: "But recently White calculated what would happen if the shape of the ring encircling the spacecraft was adjusted into more of a rounded donut, as opposed to a flat ring. He found in that case, the warp drive could be powered by a mass about the size of a spacecraft like the Voyager 1 probe NASA launched in 1977.

    Furthermore, if the intensity of the space warps can be oscillated over time, the energy required is reduced even more, White found.

    "The findings I presented today change it from impractical to plausible and worth further investigation," White told SPACE.com. "The additional energy reduction realized by oscillating the bubble intensity is an interesting conjecture that we will enjoy looking at in the lab.""
  • Luzi Bergamin on 21 Sep 12
     
    To me, this looks a little bit like the claim "infinity minus one is a little bit less than infinity"...
  • LeopoldS on 24 Sep 12
     
    Luzi I miss you ...
Joris _

SPACE.com -- Railway to the Sky? NASA Ponders New Launch System - 3 views

www.space.com/...ew-nasa-technology-100914.html

space technology future

shared by Joris _ on 16 Sep 10 - No Cached
  • A team of engineers from NASA's Kennedy Space Center in Florida and some of the agency's other field centers are looking into this and other novel launch systems based on cutting-edge technologies.
  • The launch system would require some advancements of existing technologies, but it wouldn't need any brand-new technologies to work
  • Scramjet vehicles could be used as a basis for a commercial launch program
  • ...1 more annotation...
  • It's not very often you get to work on a major technology revolution
  • Juxi Leitner on 16 Sep 10
     
    I wonder if they are also working with that SCRAMSPACE initiative in Australia that was presented at ESTEC a while back...
  • Giusi Schiavone on 19 Sep 10
     
    what about a space elevator!!! quiet old concept (1895), see this link on wiki http://en.wikipedia.org/wiki/Space_elevator
Joris _

SPACE.com -- NASA to Boost Speed of Deep Space Communications - 1 views

www.space.com/...tion-network-speed-100122.html

MAD technology communications DSN

shared by Joris _ on 25 Jan 10 - Cached
  • a few megabits per second might someday get as much as 600 megabits per second, if not more. That could enable far more scientific payoff per mission in the long run.
  • new communication innovations such as disruption tolerant networking
  • one of the biggest communication revolutions will come from laser-driven optical communication
    • Joris _
      Joris _ on 25 Jan 10
       
      they kind-of stole my idea ;)
nikolas smyrlakis

SPACE.com -- White House Panel Backs Commercial Alternatives to NASA's New Rocket - 1 views

www.space.com/...spaceflight-review-report.html

space.com nasa human spaceflight aresI

shared by nikolas smyrlakis on 26 Oct 09 - Cached
  • nikolas smyrlakis on 26 Oct 09
     
    "Seeking a Human Spaceflight Program Worthy of a Great Nation" - NASA's and Lockheed Martin's 2nd thoughts of returning to the moon..
Juxi Leitner

SPACE.com -- Next Mars Rover's Landing Site Narrowed to 4 Choices - 0 views

www.space.com/...sity-landing-sites-100615.html

mars exploration rovers landing site science space

shared by Juxi Leitner on 16 Jun 10 - Cached
LeopoldS liked it
  • is expected to determine whether Mars is or was ever habitable to microbial lif
  • whittled down to four. They are regions of Mars known as Mawrth Vallis, Gale crater, Holden crater and Eberswalde crater.
Juxi Leitner

SPACE.com -- Solar Sail Spacecraft Steers with Sunlight for First Time - 0 views

www.space.com/...ail-sunlight-steer-100806.html

technology space propulsion attitude control

shared by Juxi Leitner on 11 Aug 10 - Cached
  • Juxi Leitner on 11 Aug 10
     
    The Japan Aerospace Exploration Agency spacecraft Ikaros now represents the first solar sail to have harnessed sunlight for both attitude control and propulsion, after it first launched May 21 alongside the Venus-bound orbiter Akatsuki.
andreiaries

SPACE.com -- Huge Satellite Poses 150-Year Threat of Space Debris - 1 views

www.space.com/...lite-debris-threat-100726.html

space technology

shared by andreiaries on 30 Jul 10 - Cached
  • andreiaries on 30 Jul 10
     
    ESA is still at the forefront of space debris developments. But we do have a brilliant idea from the public: "Pay Communist China to shoot it down."
  • Ma Ru on 02 Aug 10
     
    Just in case you don't realise, it's the one which model is next to the Space EXPO :-) Quite a piece of debris...
Joris _

SPACE.com -- Space Beer Headed for Zero Gravity Bar - 0 views

www.space.com/...testing-space-beer-100927.html

shared by Joris _ on 28 Sep 10 - No Cached
  • It may not come in time for Oktoberfest, but the world's first beer to be certified for consumption in space will soon undergo tests in weightlessness to see if it is brewed with the right stuff.
Joris _

SPACE.com -- Bigelow Aerospace Soars with Private Space Station Deals - 0 views

www.space.com/...tion-first-clients-101019.html

technology

shared by Joris _ on 20 Oct 10 - No Cached
  • A private space company offering room on inflatable space habitats for research has found a robust international market
  • A question that continues to float through the halls of NASA and the Congress: Is there a commercial market for utilizing space?
andreiaries

SPACE.com -- Space Dragon Soars! Photos From SpaceX's First Space Capsule Demo Flight - 0 views

www.space.com/...ecraft-test-flight-101208.html

space technology

shared by andreiaries on 09 Dec 10 - No Cached
  • andreiaries on 09 Dec 10
     
    They look set to replicate project Mercury. At the same costs too. Wonder if they will send any chimps first :).
Joris _

Japan probe overshoots Venus, heads toward sun - 0 views

www.washingtonpost.com/...AR2010120701077.html

MAD venus robust

shared by Joris _ on 08 Dec 10 - No Cached
sreejanag liked it
  • A Japanese probe to Venus failed to reach orbit Wednesday and was captured by the sun's gravitational pull
  • Akatsuki's engines did not fire long enough to attain the proper orbiting position
  • may be able to try again when it passes by Venus six years from now.
  • Joris _ on 08 Dec 10
     
    The usefulness of having a robust trajectory :) ... They have to wait 6 more years for another date with Venus ...
  • ...2 more comments...
  • Joris _ on 09 Dec 10
  • LeopoldS on 11 Dec 10
     
    I agree in general but just out of the stomach: is there really an optimised trajectory that would be able to avoid this kind of scenarios when main thrusters don't perform properly? Wouldn't you in any case end up in a sun-orbiting trajectory and have to come back after years??
  • Joris _ on 11 Dec 10
     
    "optimised trajectory" of course not, robust definitely! It was the subject of my paper presented at the AAS (the one in San Diego) "Designing robust interplanetary trajectories subject to one temporary engine failure". The problem here is that they do not have enough fuel for a correction maneuver that would allow to come back to Venus earlier, and break for a VOI. A robust scenario could have alloted the best amount of fuel and time to be able to recover from almost all possible unplanned events. In the paper, I introduce some confidence regions such that I get the robust control for p% chance of mission success in case m% chance of problem with the propulsion system.
  • Dario Izzo on 12 Dec 10
     
    You should run your method on this scenario and see if you could get a trajectory with a shorter come back time using the same spacecraft.... would be a big selling point for a new trajectory design approach
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