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Method for controlling the pressure and a mixture ratio of a rocket engine, and corresponding device

A rocket engine, mixture technology, applied in the direction of rocket engine installation, engine control, machine/engine, etc.

Inactive Publication Date: 2018-05-11
ARIANEGRP SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Linear compensation is therefore only available in the vicinity of the selected operating point

Method used

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  • Method for controlling the pressure and a mixture ratio of a rocket engine, and corresponding device
  • Method for controlling the pressure and a mixture ratio of a rocket engine, and corresponding device
  • Method for controlling the pressure and a mixture ratio of a rocket engine, and corresponding device

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Embodiment Construction

[0041] Methods and apparatus for controlling pressure and mixture ratio within a rocket motor are described next.

[0042] figure 1 A system including a control device DC and a rocket motor is shown. Although the rocket engine in this figure is included in the system of the invention, its internal structure has no say in the invention itself.

[0043] by instructing, figure 1 The structure of the engine in corresponds to that described in more detail in document EP 2187031.

[0044] In this embodiment, the engine has two propellant containers 131 and 132 . Downstream of each container 131 and 132, the engine has a respective pump 111 or 112.

[0045] Downstream of the pump, the engine has two control valves VR1 and VR2, called "bypass" valves, and located on the two turbine lines. It can be observed that in this specification, reference numerals VR1 and VR2 are used both to designate control valves and to control signals for determining their positions.

[0046] The engi...

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Abstract

The invention relates to a method and device for controlling the pressure (PGC) and a mixture ratio of a rocket engine on the basis of a set pressure value (PGCc) and set mixture ratio value (RMc). Insaid method and device, a control generates signals for controlling two control valves (VR1, VR2) of said engine, the control using a pressure feedback loop. Said control also uses a determination ofan estimated mixture ratio value (RMe). The estimated mixture ratio value is obtained by a model generating estimated mixture ratio values from at least one of the two signals for controlling controlvalves and / or the measured pressure.

Description

Background technique [0001] The present invention relates to the general field of rocket engines. More precisely, it relates to controlling such an engine, and in particular controlling the pressure and mixture ratio of such an engine. [0002] The rocket motor is specifically controlled to reach the desired operating point, eg, based on pressure setpoints and mixture ratio setpoints. The pressure corresponds to the pressure within the combustion chamber of the engine, and the mixture ratio corresponds to the ratio of oxygen / hydrogen mass flow rates input to the combustion chamber. [0003] Traditionally, the control valve operates on the basis of those setpoints, which valve is known to those skilled in the art as a valve capable of acting on the engine, and may for example consist of a so-called "bypass" valve. The position of the control valve is controlled to achieve pressure and mixture ratio setpoints. [0004] One solution for controlling the engine could be an open ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/56F02K9/96F02K9/00
CPCF02K9/00F02K9/56F02K9/96F05D2270/709F02K9/58
Inventor 瑟奇·丹尼尔·盖·戈里德克
Owner ARIANEGRP SAS