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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?
Joris _

Is It Time To Revamp Systems Engineering? | AVIATION WEEK - 1 views

www.aviationweek.com/...story.jsp

engineering

shared by Joris _ on 02 Nov 10 - No Cached
LeopoldS liked it
  • They both believe the systems engineering processes that have served the aerospace and defense community since pre-Apollo days are no longer adequate for the large and complex systems ­industry is now developing.
  • Joris _ on 02 Nov 10
     
    1) it has to actively work and produce a result that's what you intended 2) the design must be robust. 3) it should be efficient 4) it should minimize unintended consequences. "But we have to establish a formal, mathematically precise mechanism to measure complexity and adaptability . . . [where] adaptability means the system elements have sufficient margin, and can serve multiple purposes." "We need to break the paradigm of long cycles from design to product" some interesting questions....
  • ...1 more comment...
  • LeopoldS on 02 Nov 10
     
    indeed ... already hotly debated in CDF ... any suggestions in addition to what we already contributed to this (e.g. system level optimisation)
  • Joris _ on 03 Nov 10
     
    what is the outcome of the CDF study ? I think actually that optimisation is not at all the key point. As it is stressed in this news, it is robustness (points 2 and 4). This is something we should think about ...
  • Luzi Bergamin on 03 Nov 10
     
    SYSTEM OF SYSTEMS, SYSTEM OF SYSTEMS!!! :-D
Joris _

Japan plans to send a robot to the moon | The Australian - 1 views

www.theaustralian.com.au/...story-e6frg8y6-1225947783972

robot space moon

shared by Joris _ on 04 Nov 10 - No Cached
  • the little android's oil bearings and ultrasonic sensors will not work in the lunar vacuum
  • The one-sixth gravity presents problems for stable movement, and Moon dust clogs joints.
  • the Japan Aerospace Exploration Agency (Jaxa), the country's space agency. It runs the rockets needed to deliver their robot to the Moon and, so far, has been distinctly cool on the idea.
  • Joris _ on 04 Nov 10
     
    Interesting! I like the quote "Maybe China would allow that to be a one-way trip but, in Japan, it would have to be a return ticket" talking about a human mission ....
Juxi Leitner

Martian Projects Shall Use Nuclear Energy - 0 views

www.marsdaily.com/...ll_Use_Nuclear_Energy_999.html

technology nrg nuclear propulsion

shared by Juxi Leitner on 02 Nov 09 - Cached
  • Since current rocket technologies are not sufficient for the future exploration of Mars and the whole Solar system, and since no alternative energy resources have been found as of now, the only possible way to implement those projects would be by using nuclear energy, Lopota said at an academic conference on aerospace.
  • LeopoldS on 04 Nov 09
     
    blablabla
pacome delva

Temperature-induced film deformation produces teeth-like structures - 0 views

www.rsc.org/...buckling_microgears.asp

phy micromechanics microgears

shared by pacome delva on 01 Sep 09 - Cached
  • Thin films can buckle round curved substrates to form gears for micromachines
  • Until now, making microgears has required expensive etching and micromachining. Chen's method only requires a change in temperature - no external guidance is required.
  • The team have made gears with diameters of 6 millimetres but they are keen to go smaller and make true microgears that could be used in biomedical engineering or aerospace.
  • ...1 more annotation...
    • pacome delva
      pacome delva on 01 Sep 09
       
      Where microgears could be useful in space ?
Juxi Leitner

IEEE Spectrum: German-U.S. Company to Loft Segmented, Self-Steering Airship - 0 views

www.spectrum.ieee.org/...0

UAV

shared by Juxi Leitner on 22 Sep 09 - Cached
  • Sanswire-TAO’s ultimate goal is to loft an airship that can ascend to the lower stratosphere, about 18 kilometers up, and fly for weeks or even months at a time, says Dan Erdberg, vice president of operations for Sanswire.
ESA ACT

Africa Aerospace and Defense conference:: A A D ::: - 0 views

www.aadexpo.co.za/index.html

Africa

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    Aeptember 2008, Cape Town, ZA
Joris _

A Fusion Thruster for Space Travel - IEEE Spectrum - 4 views

spectrum.ieee.org/...0

Thruster PHY NRG NASA

shared by Joris _ on 29 Jun 11 - No Cached
LeopoldS liked it
  • Now a NASA engineer has come up with a new way to fling satellites through space on mere grams of fuel, tens of times as efficiently as today’s best space probe thrusters.
  • Instead of using deuterium and tritium as the fuel stocks, the new motor extracts energy from boron fuel.
  • Joris _ on 29 Jun 11
     
    "And according to his calculations, improvements in short-pulse laser systems could make this form of thruster more than 40 times as efficient as even the best of today's ionic propulsion systems that push spacecraft around. "
  • LeopoldS on 02 Jul 11
     
    Dejan please have a look at this also ...
  • LeopoldS on 02 Jul 11
     
    while the nuclear reaction seems to be sound at first view, I am not so sure how this would work: "Electromagnetic forces push the target and the alpha particles in the opposite directions, and the particles exit the spacecraft through a nozzle, providing the vehicle's thrust. "
jcunha

Cloud cities for Venus exploration - 3 views

spectrum.ieee.org/...d-cities-for-venus-exploration

science space FUN technology

shared by jcunha on 19 Dec 14 - No Cached
Paul N liked it
  • jcunha on 19 Dec 14
     
    Our friends from NASA have come out with a plan to the human exploration of Venus in the time that everyone is speaking about Mars.
  • Ma Ru on 24 Dec 14
     
    Love the concept acronym, which pretty much says it all... Not sure which astronaut would fancy floating around in an atmosphere where clouds are made of sulphuric acid. Besides I don't see the point of a manned mission if one can't reach the surface.. tele-operation would be easy and so much cheaper.
jcunha

Free 3-D aircraft design software - 2 views

techxplore.com/...-free-d-aircraft-software.html

technology drone aircraft

shared by jcunha on 10 Oct 16 - No Cached
  • jcunha on 10 Oct 16
     
    A free software tool that could revolutionize the drone industry to design and build your own drone/aircraft/fighter with a 3-D online software that generates aerodynamic information (maybe optimization also) about your own design.
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