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The method of automatic maintenance of air pressure in a hermetically sealed housing under critical operating conditions

DOI 10.18127/j19998465-201809-05

Keywords:

S.V. Kuchevsky – Ph.D.(Eng.), Lecturer, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)
E-mail: faust2@bk.ru
V.V. Onufrienko – Ph.D.(Eng.), Associate Professor, Head of Department, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)
E-mail: OVV372@mail.ru
V.M. Dmitriev – Ph.D.(Eng.), Lecturer, MESC «Zhukovsky–Gagarin Air Force Academy» (Voronezh)
E-mail: dvm84@bk.ru


Increasing the efficiency of systems that ensure the maintenance of a given pressure in a sealed housing volume for creating acceptable working conditions for the human operator under extreme operating conditions and the impact because of this pressure drop on its functional state is an actual scientific and technical task.
The purpose of the study is to develop a method of automatic maintenance of the specified air pressure value in the sealed cabin during its depressurization which allows to reduce errors in the creation of program pressure in the sealed cabin of the aircraft due to the choice during the flight the optimal parameters of the regulatory bodies of the automatic pressure control system depending on the degree of depressurization and flight altitude for increasing the reliability of the sealed cabin of aircraft crew protection in its partial depressurization.
In the article, the solution of the pressure control problem in the sealed cabin is considered in relation to the optimization problem, which is reduced to the minimization of the objective function by selecting the optimal regulatory bodies parameters of the feed regulator and pressure regulator of the automatic pressure control system. Meanwhile, estimation of the difference between the program (set) pressure value and the current (measured) pressure in the sealed cabin by determining the degree of depressurization and solving the problem of choosing the optimal regulatory bodies parameters of the feed regulator and pressure regulator is applicable we will realize in relation to the sealed cabin with the automatic pressure control system.
The success of the study goal is achieved by developing method of automatic maintenance of a specified air pressure value in the sealed cabin during its partial depressurization, which has a significant difference from the known methods consisting in estimating during a flight in real time the difference between the programmed (set) pressure value and the current (measured) pressure in the sealed cabin, compensation of the pressure difference due to the choice of optimal parameters, the regulatory bodies of the automatic pressure control system depending on the degree of depressurization and the flight altitude.
The main provisions of this method can be used at the stages of design and development of real algorithms for the automatic pressure control system of the sealed cabin of perspective aircraft.

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