2009. № 35
Mathematics. Physics. Mechanics  
The popular low Reynolds turbulence model of kε LamBramhorst is modified by the inclusion of the model of pressurevelocity diffusion into the equation of turbulence energy transfer; it allowed to forecast the laminar turbulent transfer in the boundary layer with the accuracy sufficient for engineering operations. The pressurevelocity diffusion model is a nongradient type looks as dpv/dy=Cpv*d(kU)/dy (dpv/dy integral on the layer cutting is equal to zero, dpv/dy=0 in turbulent homogeneous nonshear flow) with Cpv constant coefficient. Keywords: Turbulence model; turbulent energy; pressurevelocity diffusion; laminarturbulent transition 

In the frame of the standard electrodynamics, a torque is calculated, which acts from a circularly polarized electromagnetic beam with a plane phase front on an absorbing surface. And a moment of momentum flux in the same beam is calculated in the frame of the same electrodynamics. It is found that this torque is twice more than the moment of momentum flux. We have inferred that the calculation of the electromagnetic angular momentum flux in the beam is incorrect. Namely, this calculation takes only a moment of momentum into account as an angular momentum, and does not take account of spin. An analysis of the field theory foundations of the electrodynamics confirms this inference. Some changes in the field theory allow to obtain an electrodynamics’ spin tensor, which accompanies the Maxwell energymomentum tensor. Using this spin tensor for the beam yields the equality between the torque and the angular momentum flux. In this way, the electrodynamics is completed by a spin tensor. Keywords: electrodynamics torque; angular momentum; spin tensor 

An interference experiment is proposed to answer a troubling question, how is angular momentum flux density is ditributed over a circularly polarized light beam with plane phase front. Keywords: electrodynamics spin; electrodynamics torque; MachZehnder interferometr 

The concept is criticized about quasielastic dipoles of dielectric which are being stretched out when polarizing. Keywords: model of dielectric molecules; Stark effect 

Reasons are presented against considering a moment of momentum flux density to be a spin flux density. A spin tensor is proposed to describe spin of a photon in the frame of the classical electrodynamics. Keywords: paraxial beam; dipole radiation; spin radiation 

Theoretical engineering. Mechanical engineering  
Development of the interconnected system of the working documentation is the primary goal of technical preproduction of any industrial product. Quality of development process of the design, technological and operational documentation first of all will define the quality of turnedout products. For mechanical items with an operated configuration this process possesses the specificity.
Keywords: IDEF0 methodology; working documentation; technical preproduction; configuration management of the mechanical details 

Application of coprojectization technology by all participants of product life cycle, known as "parallel engineering", is the necessary condition of the product quality improvement, decrease in time and material costs. First of all it is reached by realization of the most effective administrative decisions at all stages of technical preproduction, based on fullest account of the opinions of all experts, participants of the project. Process of making up of project decisions at such approach is called as management of the product configuration.
Keywords: parallel engineering; configuration management; technical preproduction; working documentation 

Methods and tutorials  
The description of a computer practical work for students and bachelors МАI on computing algorithm LemkeHowson of the decision bimatrix games is stated in article. The basic aspects of calculations and an example with representation of working windows of the program are considered. Keywords: training programs; a computer practical work; computing algorithm; the software; the multiwindow environment; an example of calculations 

Electrotechnology. Electromechanics  
The structure and dynamic superconductor’s intermediate and mixed states of are described, including its cooperation and electromagnetic effects. It is briefly discussed the design of the 2G HTS topological generator and experimental results. Keywords: high temperature superconductor; intermediate and mixed states cooperation; topological generator; design; experiment 