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Spartan is a molecular modelling and computational chemistry application from Wavefunction. [2] It contains code for molecular mechanics , semi-empirical methods , ab initio models , [ 3 ] density functional models , [ 4 ] post-Hartree–Fock models, [ 5 ] thermochemical recipes including G3(MP2) [ 6 ] and T1.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
In 1996, the USMC launched the H-1 upgrade program by signing a contract with Bell Helicopter for upgrading 180 AH-1Ws into AH-1Zs and upgrading 100 UH-1Ns into UH-1Ys. [6] [8] The H-1 program created completely modernized attack and utility helicopters with considerable design commonality to reduce operating costs.
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Alenia C-27J Spartan The Aeritalia G.222 (formerly Fiat Aviazione , later Alenia Aeronautica ) is a medium-sized STOL military transport aircraft . It was developed to meet a NATO Basic Military Requirement 4 ; accordingly, it was originally designed with lift engines for a V/STOL capability, but these were never fitted to production aircraft.