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Carrier rocket attitude control engine temperature maintaining method and system

An engine temperature, launch vehicle technology, applied in rocket engine devices, machines/engines, mechanical equipment, etc., can solve the problems of complex system, reduced product reliability, increased structural weight, etc., to reduce energy demand, solve temperature maintenance, Achieving convenient effects

Active Publication Date: 2020-10-16
SHANGHAI INST OF SPACE PROPULSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heating during rocket flight requires an additional power supply, which not only increases the weight of the structure, but also requires a separate control module, making the system complex and reducing product reliability

Method used

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  • Carrier rocket attitude control engine temperature maintaining method and system

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Comparison scheme
Effect test

Embodiment 1

[0046] According to the method for maintaining the temperature of the launch vehicle attitude control engine provided by the present invention, it includes:

[0047] Step S1: before the rocket takes off, heat the storage tank and the thrust chamber;

[0048] Step S2: During the rocket gliding phase, set the attitude control engine to work according to the preset interval time t1;

[0049] Step S3: In the fluid conduit, set the propellant preset interval time t2 to replace the propellant, and check the temperature of the propellant;

[0050] Step S4: The thrust chamber decomposes and burns the propellant according to the preset time t1, and maintains the body temperature.

[0051] Preferably, said step S1 includes:

[0052] Step S1.1: Set the target temperature for heating the storage tank and the thrust chamber;

[0053] Step S1.2: Complete the heating of the rocket before take-off according to the target temperature.

[0054] Preferably, said step S2 includes:

[0055] D...

Embodiment 2

[0079] like figure 1 Shown, according to the launch vehicle posture control engine temperature method provided by the present invention, comprises the following steps:

[0080] Step S1. Through calculation, the target temperatures for heating the storage tank and the thrust chamber are designed to be 32°C and 200°C respectively; before the rocket is launched, the heating of the storage tank and the thrust chamber is carried out on the ground so that the storage tank The propellant inside is heated to 32°C, and the body temperature of the thrust chamber is heated to 200°C.

[0081] Step S2, the attitude control engine will perform pre-injection work before the start of the rocket taxiing section, and the body temperature will rise to about 350°C. After calculation, it will drop to 170°C in 0.5h, and 0.5h will be used as the preset time for the attitude control engine to work; The hydraulic conduit for attitude-controlled starting can hold 2kg of propellant. According to the fl...

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Abstract

The invention provides a carrier rocket attitude control engine temperature maintaining method and system. The method comprises the steps that S1, before a rocket takes off, a storage box and a thrustchamber are heated; S2, in the rocket sliding stage, an attitude control engine is set to work according to the preset interval time t 1; S3, in a liquid path guide pipe, the preset interval time t2of a propellant is set for replacing the propellant, and the temperature of the propellant is rechecked; and S4, according to the preset time t1, the propellant is decomposed and combusted in the thrust chamber, and maintaining of the body temperature is completed. According to the carrier rocket attitude control engine temperature maintaining method and system, the traditional method that in therocket flying process, the liquid path guide pipe and the thrust chamber body are heated through a power source is omitted, the energy requirement is reduced, and the advantages of being low in weightand convenient to achieve are achieved.

Description

technical field [0001] The invention relates to the technical field of launch vehicle attitude control engines, in particular to a method and system for maintaining the temperature of launch vehicle attitude control engines. Background technique [0002] The attitude control engine system of the new-generation manned launch vehicle is arranged in the rear short shell of the rocket’s third-stage liquid oxygen tank, and the surrounding environment can reach as low as -45°C. If the attitude control engine propellant is not heated, there is a risk of the propellant freezing. The attitude control engine system uses a HAN-based engine, which is limited by its own characteristics and can only be reliably started when the body temperature of the thrust chamber reaches above 120°C. Therefore, in order to ensure the reliable operation of the attitude control engine, it is necessary to maintain the temperature of the propellant and the thrust chamber. [0003] The prior art generally...

Claims

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Application Information

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IPC IPC(8): F02K9/44F02K9/56F02K9/95
CPCF02K9/44F02K9/56F02K9/95
Inventor 韩冲赵恒斌徐立峰叶胜
Owner SHANGHAI INST OF SPACE PROPULSION