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The results of the joint processing of radar images and on-land information in the centimetre range on the basis of ERS1/2 & JERS data for the Baikal Region are presented. The synthesis of images of different ranges and those obtained in different moment of time allowed us to identify and classify most characteristic natural objects with confidence.

A method of monitoring the consequences of climate changes and status of environment on regional and global scales is presented. This approach supplements the dendrochronological method applied for historical monitoring of tree growth, which is reasonable and popular but has some restrictions. The subject of investigation was pine underwood (Pinus sylvestris L.), the monitored parameter was annual linear growth of trees (growth of trunk in height, branches in length). We called the proposed type of biometric investigations orpexometry ( is sprout in Greek); the corresponding element of the programme of monitoring is called orpexometric recording. An original procedure and results of its approbation in the Kandalaksha State Natural Preserve in 2000 and in the Pechora-Iluch State Natural Preserve in 2001 are presented, along with the algorithm of statistical processing of data, with the help of which a satisfactory accuracy of parameter estimation was obtained.

The performed experiments demonstrated that the needles of pine, under the conditions existing in Kemerovo, accumulates sulphur, nitrogen, phosphorus, calcium, magnesium, potassium, lead, copper, zinc, manganese, nickel, cobalt, iron. This causes an increase in the activity of peroxidase, cell membrane permeability, decrease in ascorbate level, appearance of visual indices of damage, which leads to a decrease in lifetime and in dry mass of the needles. An interconnection is revealed between the extent of deviation of the indicated parameters and the level of pollution in the regions of the city. A principal possibility to use the investigated characteristics of functional status of the assimilation system of pine in evaluating the quality of urban environment is demonstrated.

A historical review of aviation development from the first attempts to create flying vehicle heavier than air to the present time is given. The main stages of evolution of military and civil aviation for the past 100 years are described with the use of the most famous aircraft as examples. Possible trends of evolution of the main aircraft types for the nearest future are briefly considered.

A simple method for studying spin regimes in a horizontal wind tunnel is considered. The method is based on the assumption about the weak influence of the spin radius on aerodynamic characteristics. The experimental technique is analyzed, and the equipment developed and the models examined are described. The results are compared with the data obtained by traditional methods of spin studies. The effect of inertial properties of the configuration and the position of the center of mass on steady spin parameters is demonstrated. Comparative estimates of efficiency of various methods for recovery are obtained, and recommendations for improving the spin characteristics of the examined configurations are developed.

The experimental data are compared with the numerical computations for the cases of a three-dimensional interaction of crossing shocks of various strengths and the subsequent expansion waves with a turbulent boundary layer in conditions of a flow around two vertical fins with different deflection angles of side surfaces ₁

The experimental results on control by disturbances development in a swept wing boundary layer by means of localized and distributed suction are presented. The control by spanwise flow stationary vortices and secondary periodical disturbances generated at late stages of these vortices development was studied. It is shown that the distributed suction is a simple way to suppress the secondary vortex instability of a spanwise flow as compared with a localized suction. It was shown that the localized suction through a small diameter hole may cause generation of additional stationary vortices in the boundary layer. In this case complex nonlinear interactions between both controlled and controlling disturbances take place. The distributed suction effect through a group of holes is similar to the slot suction and it introduces much less disturbances of vorticity into the boundary layer.

The linear temporal stability of a nonorthogonal flow impinging on a flat wall at arbitrary angle of incidence is investigated. It is shown that the flow is stable to disturbances in the form of stationary streamwise vortices.

Operation efficiency of the gas-dynamic protectors used for decreasing outer contamination of the International Space Station by jets of orientation thrusters was studied under the real conditions. Results are shown. Data on composition of incomplete combustible products and their effect on optic characteristics of thermostatic coatings are presented.

Measurements of velocity and temperature profiles in a Ranque ( Hilsch vortex tube with square section are presented. It was demonstrated that energy separation in gas flow for this kind of devices takes place similar to the well-known round tubes. For similar integral parameters of gas flow, the values of temperature drop between two outlets are close for the two variants of tube. The simple kinematical model of energy separation was developed for stationary swirl axisymmetrical flow of ideal gas in the vortex tube. Comparison with experimental data proved that the developed model gives a pretty accurate description of velocity field in the vortex tube and provides a good estimate for stagnation temperature drop along the radius.