Detail Speed is the New Stealth   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 407 no. 8838 (Jun. 2013), page SS14-SS15. Topik: Military Weapons; Missiles; Aerodynamics Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.76 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel After the terrorist attacks of September 11th 2001, American officials decided that they needed to obtain a prompt global strike capability, able to deliver conventional explosives anywhere on Earth within an hour or two. Military planners have now pinned their hopes on an alternative approach: superfast or hypersonic unmanned vehicles that can strike quickly by flying through the atmosphere, and cannot be mistaken for a nuclear missile. Engineers are trying to develop lightweight, air breathing hypersonic vehicles that can travel at rocket-like speeds while taking oxygen from the atmosphere, as a jet engine does, rather than having to carry it in the form of fuel oxidants. In spite of setbacks, research into hypersonic weapons will continue. 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. Getting anything to work at all under hypersonic conditions is extraordinarily difficult - but the effort continues even so. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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