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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
Francesco Biscani

Ion engine could one day power 39-day trips to Mars - space - 22 July 2009 - New Scientist - 0 views

www.newscientist.com/...power-39day-trips-to-mars.html

MAD vasimir nrg

shared by Francesco Biscani on 22 Jul 09 - Cached
  • Joris _ on 24 Jul 09
     
    As I mentioned it into my thesis, this engine bridges the gap between chemical and low-thrust propulsion systems. To be more specific: Isp should vary between 1000 and 30000s, and the thrust amplitude should reach up to 1200 N. It is interesting to see that the concept is actually moving forward ...
Joris _

WISE Mission Assembled and Preparing for Launch - NASA Jet Propulsion Laboratory - 0 views

www.jpl.nasa.gov/...features.cfm

MAD asteroids

shared by Joris _ on 15 Jun 09 - Cached
  • The mission will survey the entire sky at infrared wavelengths,
  • Among expected finds from WISE are hundreds of thousands of asteroids in our solar system's asteroid belt,
nikolas smyrlakis

Should NIAC be Revived? | NASA Watch - 0 views

www.nasawatch.com/...should_niac_be.html

niac advanced concepts nasa space

shared by nikolas smyrlakis on 12 Jun 09 - Cached
  • $4 million annual budge
    • nikolas smyrlakis
      nikolas smyrlakis on 12 Jun 09
       
      To my knowledge (readers correct me if I'm wrong) no where else within NASA do people get paid to just think very long range ideas. My question: does such a group belong in NASA and should it or something like it be revived? And if you think so, what should its highest priority be? Propulsion? Artificial gravity systems? Space Elevator?
  • nikolas smyrlakis on 12 Jun 09
     
    about the advanced concepts institute of NASA. Found via twitter
ESA ACT

New Satellite Propulsion System Has Mass Below 100 Grams - 1 views

www.afrlhorizons.com/...PR0109.html

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Very Low mass PPT system
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. "
LeopoldS

$3.1 million grant for Helicon Double Layer Thruster with 2013 target for deployment in... - 0 views

nextbigfuture.com/...-grant-for-helicon-double.html

technology PHY PRO propulsion

shared by LeopoldS on 26 Jun 11 - No Cached
  • LeopoldS on 26 Jun 11
     
    More funding for helicon double layer. I am wondering how much EADS is contributing to it? Must be Lainé. 
Thijs Versloot

Hypersonic Successor to Legendary SR-71 Blackbird Spy Plane Unveiled - 1 views

www.wired.com/...lockheed-martin-sr-72

hypersonic flight propulsion

shared by Thijs Versloot on 08 Aug 14 - No Cached
  • Thijs Versloot on 08 Aug 14
     
    he new SR-72 will use a turbine-based combined cycle (TBCC) that will employ the turbine engine at lower speeds, and use a scramjet at higher speeds. A scramjet engine is designed to operate at hypersonic velocities by compressing the air through a carefully designed inlet, but needs to be traveling supersonic before it is practical to begin with. So far research projects from NASA, the Air Force and other Pentagon entities have not been able to solve the problem of transitioning from the subsonic flight regime, through hypersonic flight with a single aircraft. Same problem as Reaction Engines is trying to solve, so I am not sure whether they actually cracked it. In any case, nice pictures. Not sure why the exhaust color is purple in color. Its not running on Argon I believe.
  • dejanpetkow on 11 Aug 14
     
    Weird article. Intermediate thruster stage (Ramjet) is missing. Scramjet has supersonic combustion and a normal turbine delivers subsonic flows. Even with afterburner - the Scramjet inlet would decelerate the flow down to subsonic velocity with "normal" subsonic combustion. The only thing I can imagine is that the Scramjet stage is bi-functional and covers both, subsonic and supersonic combustion. But the article doesn't say anything about it.
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