CONTENTS #2 (Febrary) 2018
Efficiency Оf Use And Problems Of Rescue Of The First Stages Of Launch Vehicles (p. 3 – 11)
A.S. Koroteyev, V.M. Nesterov, I.O. Yeliseyev, A.V. Balashova
The analysis of efficiency of use and the problematic issues defining the prospect of rescue of the first stages of the Russian system is provided.
Keywords: launch vehicle; payload; reusable first stage; mid-flight rocket engine; technical and economic parameters.
Weight Savings And Fuel Efficiency Due To Composites Application In Aerostructures (p. 12 – 19)
G.N. Zamula, K.А. Kolesnik
Weight savings due to structural applications of polymer-based composites were generalized. The article includes practical prediction for weight savings growth and fuel efficiency improvement of mainline aircrafts thanks to the use of composites in primary aerostructures.
Keywords: composite structure; composite material; weight savings; fuel efficiency; strength.
Analysis Of Western European Background Of Simulation Of Launch And Re-entry Of Reusable Spacecraft (p. 20 – 28)
K.G. Bomstein, V.Yu. Grаnich, V.L. Miroshkin
The article analyzes the experience of simulation and its prospects in the field of launch and re-entry in the Earth’s atmosphere hypersonic MCLA gained in the countries of Western Europe. The use of advanced techniques of simulating through modern computational tools has allowed to reduce considerably terms of research, design and virtual testing of the relevant products, which is illustrated in the example Program EXPERT, carried out by ESA with the support of research organizations and industrial companies of France, Holland, Italy, Germany, Belgium and England.
Keywords: the launch and descent in the Earth atmosphere hypersonic Reusable Spacecraft; the small space flying laborator; the transition of the laminar boundary layer into turbulent one; the thermal protection system and its reliability; the modern complex mathematical programs in the field of structural mechanics and aerothermodynamics.
The Possibility Of The Tilt Rotor Design With Electric And Hybrid Power Plant (p. 29 – 36)
M.I. Myasnikov, S.Yu. Esaulov, V.A. Ivchin
This article presents a theoretical evaluation of the tilt rotor design possibility with both electric and hybrid (diesel-electric) power plant. Mass properties/available power relation of the power plant obtained. Range and flight endurance for the lift/drag possible values and cruise speed of the level flight within the flight envelope for the tilt rotor with hybrid power plant calculated. Also, VTOL and level flight available power and drag power needs evaluated.
Keywords: tilt rotor; electric power plant; hybrid power plant.
Optimization Of The Pull-up Maneuver For The Hypersonic Aircraft Insertion Into The Engine Research Window (p. 37 – 43)
N.V. Grigoriev, G.S. Krasnolozhkin, V.D. Sadrtdinov
For the hypersonic aircraft being developed within the international HEXAFLY-INT project a solution was found to the problem of the trajectory optimization for its insertion into the engine research window.
Keywords: flight trajectory; optimal control; nonlinear programming; numerical methods for extreme problem solution.
Method Of Synthesis Of A Field Of Possible Trajectories Of Aircraft By Using Of The Complex Variable Theory (p. 44 – 49)
The complex variable theory is studied in appliance to synthesis of guidance based on inverse dynamic problem. A method of construction of a set of reference trajectories based on analytical expressions for streamlines or equipotential lines for nonviscous liquid is offered. A method of selection of required trajectory from the set is proposed.
Keywords: inverse dynamic problem; aircraft; conformal mapping; reference trajectory.
The Health Usage Monitoring Systems For Control Surface Electromechanical Actuator.
The State Of The Art (p. 50 – 64)
The paper contains an analytical review of publications in the field of development health usage monitoring system for electromechanical actuator. The approaches to technical condition diagnostics are described and the recommendations on such system development in Russia are given.
Keywords: diagnostic; data mining; monitoring system; fault; failure prognosis; electric aircraft; electromechanical actuator.