Methodological approach to technical and economic feasibility of projects for new space tech-nology products
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2015, Vol 3, Issue 3
Abstract
The problem of a combined optimization of spacecraft design parameters and its apogee solid rocket engine for the orbital maneuver resulting in the spacecraft transfer from elliptic orbit into given circular orbit is examined. The problem is formulated as a problem of nonlinear mathematical programming with limitations in the form of equalities and differential constraints. Optimal values of spacecraft design parameters and its apogee solid rocket engine resulting in delivery of maximal payloads to given final circular orbit are determined considering requirements of a system approach to designing complicated systems.
Authors and Affiliations
V. Senkin
Advanced sound suppressors for small arms
The paper examines the current state and the need for improving sound suppressor designs for small arms to increase their efficiency. Special aspects of sound suppressors and positioning systems used within the ATO (an...
Sound suppressors for small arms with annular expansion chamber
The paper deals with information about sound suppressors for small arms when an annular expansion chamber and two-point mounting attached to the firearm barrel are used. Those patented designs are examined, as from 1910...
Studies of primary microwave frequency converters based on the measuring cell with rectangular window
The goal of this work is to estimate the effect of the dielectric properties, shape, and geometric dimensions of inserts in a rectangular window of a waveguide meter thick-walled diaphragm `on the reflection and transmis...
Numerical simulation of axisymmetric flow past extended compound body using test particles method with hierarchic grids
The present paper continues the study on evolution of the test particles method (TPM). The advantages of a hierarchic two-level non-uniform grid over a computational uniform grid (CUG) are presented with provision for ex...
Studies of influence of raihead profiles on dynamics of freight car running on curved track
The present paper deals with advantages of asymmetric railhead profiles on the curved track. The research under consideration has been aimed at analyzing the influence of introducing changes to railhead profiles of the i...