SPEED is the New STEALTH ! -------------------------------------------- America is slowly losing the strategic advantage that its stealth warplanes have long provided. In 2010 the head of America’s Pacific Command, Admiral Robert Willard, said that a Chinese programme to convert a nuclear ballistic missile into an aircraft-carrier killer, by packing it with conventional explosives, had reached “initial operational capability”. The DF-21D, as it is called, is designed to descend from space at hypersonic speed and strike ships in the Western Pacific. Even though the accuracy of the DF-21D’s guidance system is unknown, the missile is already altering the balance of power within its range, says Eric McVadon, a consultant on East Asian security and a former US Navy rear-admiral. America has begun testing yet another approach. As part of an effort called Project Falcon, the US Air Force and DARPA, the research arm of America’s armed forces, have developed hypersonic “boost-glide” vehicles that piggyback on a modified ICBM and achieve hypersonic speeds simply by falling from a high altitude, rather than using a scramjet. Building a vehicle capable of gliding at Mach 16 is difficult, but not impossible. America’s space shuttle used to re-enter the atmosphere at Mach 25, so fast that friction heated air molecules into a layer of plasma around the craft that radio signals could not penetrate. New “ceramic matrix composites” show great heat-shielding promise, says Sankar Sambasivan, the boss of Applied Thin Films, a company in Illinois that makes parts for military aircraft. thediplomat/2014/01/china-secretly-sold-saudi-arabia-df-21-missiles-with-cia-approval/
Posted on: Sun, 10 Aug 2014 18:09:59 +0000
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