Explore topic-wise fullforms in Military and Defence

INFO: Full form for FSC is Federal Supply Classification in Military and Defence category
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INFO: Full form for FSC is Force Structure Conference in Military and Defence category
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INFO: Full form for FSC is Federal Supply Category in Military and Defence category
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INFO: Full form for BP is Black Powder in Military and Defence category
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INFO: Full form for BP is Battery Pack in Military and Defence category
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INFO: Full form for BP is Burning The Planet in Military and Defence category
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INFO: Full form for BP is Battlefield Position in Military and Defence category
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Brilliant Pebbles was a ballistic missile defense (BMD) system proposed by Lowell Wood and Edward Teller of the Lawrence Livermore National Laboratory (LLNL) in 1987, near the end of Cold War. The system would consist of thousands of small missiles, not unlike conventional heat seeking missiles, which would be placed in orbits so that hundreds would be above the Soviet Union at all times. If the Soviets launched its ICBM fleet, the pebbles would detect their rocket motors using infrared seekers and collide with them. Because the pebble strikes the ICBM before the latter could release its warheads, each pebble could destroy several warheads with one shot.

The name is a play on the idea of Smart Rocks, a concept promoted by Daniel O. Graham as part of the Strategic Defense Initiative (SDI). This used large battle stations with powerful sensors, carrying dozens of small missiles, the rocks. To keep enough missiles above the Soviet Union at any given time, a minimum of 423 stations would be needed. The United States Air Force pointed out that this would require an enormous space lift capability, well beyond what was available. In meetings with Graham, Teller dismissed the concept as "outlandish" and vulnerable to attack by anti-satellite weapons. The SDI Office (SDIO) was similarly dismissive of the concept.

Teller and Wood initially proposed their own BMD system, Project Excalibur. This used an X-ray laser driven by a nuclear warhead that could attack dozens of ICBMs at once. In 1986, Excalibur failed several critical tests. Soon after, the American Physical Society published a report stating that none of the directed-energy weapons being studied by SDI were remotely ready for use. Abandoning these approaches for the short term, SDIO then promoted a new concept that was essentially a renamed Smart Rocks. It was at this point that Wood introduced Pebbles, suggesting that advances in sensors and microprocessors meant there was no need for a central station—the missiles could host all the equipment they needed to act alone. To attack this system, anti-satellite weapons would have to be launched against every pebble, not every station.

After considerable study, in 1990 Pebbles replaced Rocks as the baseline SDI design and in 1991 it was ordered into production and became the "crowning achievement of the Strategic Defense Initiative". By this time the Soviet Union was collapsing and the perceived threat changed to shorter-range theatre ballistic missiles. Pebbles was modified, but doing so raised its weight and cost; the original design called for around 10,000 missiles and would cost $10 to $20 billion, but by 1990 the cost for 4,600 had ballooned to $55 billion. Fighting in Congress through the early 1990s led to Pebbles' cancellation in 1993.

INFO: Full form for BP is Binding Post in Military and Defence category
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