Posted by Matt in May 14th, 2009 |
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Published in
GPS,
Satellites,
3 Years,
Air Force,
Curves,
Gao,
Generation Gps,
Gps Accuracy,
Gps Iii,
Gps Satellites,
Launch,
Next Generation,
Operational Satellite,
Probability,
Reliability,
Satellite Constellation,
Satellite Orbit
Delays in launching new satellites – the next one is scheduled for a November 2009 launch, almost 3 years late – could be problematic if the older hardware starts failing. The GAO has calculated – using reliability curves for each operational satellite – that the probability of keeping a 24-satellite constellation in orbit drops below [...]
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Posted by Matt in January 26th, 2009 |
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Published in
Nuclear,
Alpha Particles,
arsenal,
Atoms,
Campaign Promise,
Energy Department,
Hanlon,
High Energy,
National Nuclear Security,
National Nuclear Security Administration,
Nuclear Security Administration,
Nuclear Supremacy,
Nuclear Warheads,
Nuclear Weapons,
Obama,
Plutonium Pit,
Reliability,
Reliable Replacement Warhead,
Rest Of The World,
Rrw,
tehran,
Thinkers
Do we need a reliable replacement warhead or not?
Why do nuclear warheads degrade in the first place? As the plutonium pit ages, it slowly emits high-energy alpha particles that can damage the pit as they bore through nearby plutonium atoms. This could potentially cause the weapon to lose power or not detonate.
From the article:
O’Hanlon [...]
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