2007. № 29

The article considers questions of teaching the French language by means of the virtual language environment. It also describes the experience, opportunities and conditions of use of some linguistic computer technologies and the Internet in educational process and for self-education of students as well.

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The research is conducted at the choice of an aerodynamic configuration of a reusable winged booster of transport space systems. The methodology (criterion) of comparison of aerodynamic layouts of boosters is designed. The aerodynamic layouts of a reusable winged booster executed on aerodynamic configurations "normal", "tailless", "canard" are designed. Their computational balancing aerodynamic performances are determined.

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The problem of rational selection of the electrohydraulic vibration exciter for vibration tests of a beaming is considered. Trials are carried out{conducted} by structural loading by a harmonic moment of flexion in a condition of a resonance. Formulas for definition of values of power of the vibrator and coordinates of his{its} connection with a design at which the level of structural loading is ensured greatest possible for the given system "design - vibrator" at use of limiting{marginal} capabilities of the vibrator are obtained. Operation is carried out at a support of the Russian Fundamental Researches Fund (the design No 06-08-01005).

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Steadied forced vibrations of a linear stationary mechanical system are considered. Requirements at which fulfilment, interaction interference of oscillations with the contiguous natural frequencies can be neglected are determined and the system in a environ of a resonance can be considered as a system with one degree of freedom. The problem is decided in the supposition, that elements of a damping matrix are proportional to elements of quasielastic coefficients matrix are or elements of a inertia matrix. Operation is carried out at a support of the Russian Fundamental Researches Fund (the design No 06-08-01005).

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