Russian Aeronautics

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Geometric and thermophysical characteristics of a highly-porous structure
Russian Aeronautics - Tập 53 - Trang 191-197 - 2010
Yu. A. Kirsanov, R. A. Nazipov, V. A. Danilov
A geometric model of a highly-porous cellular material is proposed. The expressions for geometric characteristics of a highly-porous structure as well as the formulas for determining effective heat conduction of the frame and a heat carrier are presented.
The effect of gyroscopic couples on disk-wing aircraft stability
Russian Aeronautics - Tập 56 - Trang 1-6 - 2013
A. M. Girfanov, V. V. Pavlov
We present the results of studying the dynamic stability of an aircraft with a rotating disk wing (disk-wing aircraft), from which the helicopter-type blades are extended at takeoff and landing. The aircraft trajectory, when entering a descending airflow, is studied.
Analysis of requirements to the measurement channels of helicopter air data system based on a stationary combined aerometric receiver
Russian Aeronautics - Tập 54 - Trang 77-83 - 2011
A. V. Nikitin, V. V. Soldatkin
The structural and functional scheme of helicopter air data system based on a stationary combined aerometric receiver using the aerometric field information of the main rotor vortex column is considered. According to the algorithms of information signal formation, the requirements to metrological characteristics of primary information sensors for the measurement channel system are substantiated.
Experimental studies of lubricant flow processes in radial lemon bore plain bearings
Russian Aeronautics - Tập 56 - Trang 365-371 - 2014
L. V. Goryunov, V. V. Takmovtsev, K. V. Zorin, D. V. Ryabinin
We present the experimental results of studying the pressure fields in the hydraulic duct and throttling characteristics in the radial double-center reversing plain bearing having a chamber and a recess made on its working surface. It is established that the zones of lubricating film rupture appear in the bearing elements when there exist eccentricity and shaft rotation.
Analysis of flow past oscillating cascades by the implicit method to evaluate the cascade aeroelastic stability in viscous flow
Russian Aeronautics - Tập 54 - Trang 9-14 - 2011
T. V. Buyukli, V. A. Shorstov
A technique of analyzing the flutter initiation in flat plate compressor cascades was developed. The viscous and inviscid flow study was carried out using the COBRA solver based on the modified implicit Godunov method and unsteady implicit method updated for using. The flutter conditions were revealed and the effect of taking into account viscosity, angles of attack and time steps was investigated...... hiện toàn bộ
Creation of an Algorithm of Optimal Control of the Unmanned Gliding Aircraft Based on the Galerkin Method
Russian Aeronautics - Tập 64 - Trang 197-203 - 2021
V. T. Grumondz, E. I. Karpezhnikov
The problem of maximum flight range for the gliding unmanned aircraft is investigated taking into account the key characteristic of this type of aircraft, namely, the absence of the propulsion. An algorithm of optimal control is created through the direct method of optimization that is based on the Galerkin method.
Optimization of amount of spare elements for aircraft equipment articles
Russian Aeronautics - Tập 50 - Trang 72-78 - 2007
V. S. Moiseev, A. V. Butuzova, A. V. Meiko
A two-objective problem of optimizing the amount of spare elements for aircraft equipment articles with instantaneous restoration of their efficiency. We present examples of determining the optimal amount of replaceable elements of a workstation for an unmanned aerial vehicle operator.
A technique for simulation of a fluid flow in branched channels
Russian Aeronautics - - 2013
Dinar Zaripov, Н. И. Михеев, N. S. Dushin
Passive Elements Based on n-Layer Heterogeneous Resistive-Capacitive Environment: Classification and Application Prospects
Russian Aeronautics - - 2024
A. Kh. Gil’mutdinov, D. V. Shakhturin
The paper presents the equations obtained for an n-layer two-dimensional heterogeneous resistive-capacitive distributed-parameter element. Based on these equations, we suggest the classification of idealized passive elements based on two-dimensional heterogeneous resistive-capacitive distributed-parameter element. These elements are considered to be the model of film structures of multilayer resis...... hiện toàn bộ
Một phương pháp hiệu quả để xác định khoảng cách tại điểm tìm kiếm mục tiêu với các tham số được biết một phần Dịch bởi AI
Russian Aeronautics - Tập 53 - Trang 33-38 - 2010
Yu. G. Bulychev, A. A. Mozol’, V. N. Vernigora
Một phương pháp hiệu quả để xác định khoảng cách nghiêng từ một mục tiêu chuyển động thẳng bằng hai phép đo hướng được mô tả, sử dụng thông tin a priori về độ lớn có khả năng của vận tốc, gia tốc và những yếu tố khác. Bài báo cũng đưa ra đánh giá về hiệu quả của phương pháp và một ví dụ minh họa.
Tổng số: 987   
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