Gas flow control in a rocket engine
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2018, Vol 3, Issue 3
Abstract
This paper presents the main results of the investigations conducted at the Department of Power Plant Thermogas Dynamics of the Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine over the past five years with the aim to solve some problems involving rocket engine gas flow control. The stability and controllability of a Cyclone-4-type rocket space stage with a large variable mass asymmetry were studied. It was shown that combined thrust vector controls that include a mechanical and a gas-dynamic system make it possible to enlarge the space stage stability region, to improve the controllability characteristics and the reliability of the space stage control system as a whole, to solve the problem of active damping of stage structure lateral vibrations, and to significantly simplify the ground tryout of the en-gine (with a large nozzle divergence ratio). A bifunctional system of rocket engine thrust vector control was developed. The system separately counter-acts the static and dynamic components of disturbing actions on the control object (rocket stage) and provides its motion stability. The mechanical part of the system may be based on the rotation of the engine or thrust-producing parts thereof, and its gas-dynamic part may be based on disturbing the supersonic flow in the engine nozzle with obstacles of various types mounted on the inside wall of the nozzle. Different designs of the gas-dynamic part were substantiated and patented, thus allowing one to choose the optimum alternative at the design stage of a rocket engine thrust vector control system. The new concept of rocket engine thrust vector control was shown to be applicable to different launch vehicle stages, both liquid-propellant and solid-propellant ones.
Authors and Affiliations
A. Yhnatev, N. Kovalenko, T. Kovalenko, G. Strelnykov, Ye. Tokareva
Keywords
Related Articles
- EP ID EP463128
- DOI -
- Views 86
- Downloads 0
Effects of variations in form of wheel profiles in operation on dynamic qualities of freight cars and indices of their interaction with railway track
The work objective is to study the effects of variations in the form of the wheel profiles in operation on the dynamic qualities of the freight cars and the indices of their interactions with the rail track. The paper pr...
On models of ergative system software reliability
The aim of this work is to analyze models of the reliability of the ergative system software component and to develop approaches to the assurance thereof. Software reliability models are analyzed, and the features of sof...
A Basic concepts of passive safety of high-speed passenger trains at crash collisions
The existing concepts of passive safety of passenger trains are analyzed considering requirements of the European Standard EN 15227 and the American Standard AAR S-580. Conceptual schemes of passenger trains of locomotiv...
Characteristics of electrical jet engine of Hall- type for correction of mi-crosatellites or-bits
The research aim is to define the degree of influence of the discharge voltage on thrust performance and power characteristics of the ITM-31 Hall low-powered engine developed at the Institute of Technical Mechanics of th...
Increasing the efficiency of grinding plants by the use of acoustic monitoring
The high energy intensity of the bulk material grinding process explains the topicality of the problem of in-creasing the process efficiency in jet grinding plants. The aim of this paper is to analyze the results of inve...