Full-flow afterburning cycle engine ignition matching control system

Abstract

The invention relates to a full-flow afterburning cycle engine ignition matching control system, and belongs to the field of engine design. The oxygen pump and the fuel pump are symmetrically arranged on the two sides of the thrust chamber; the oxygen pump turbine is connected with the oxygen pump; the oxygen pump is respectively communicated with the liquid oxygen main valve and the liquid oxygen auxiliary valve through pipelines; the liquid oxygen main valve is communicated with the oxygen-enriched generator; the liquid oxygen auxiliary valve is communicated with the rich fuel generator; the oxygen-enriched generator is communicated with the thrust chamber after passing through the oxygen pump turbine; the fuel pump turbine is communicated with the fuel pump; the fuel pump is divided into two paths through the fuel main valve; one path is communicated with the thrust chamber; the other path is communicated with the fuel auxiliary valve; the auxiliary fuel valve is communicated with the oxygen-enriched generator; the two output ends of the thrust chamber are converged and then are communicated with a fuel stop valve; the fuel stop valve is communicated with the rich fuel generator; the rich fuel generator is communicated with the thrust chamber after passing through the fuel pump turbine; accelerated filling of the fuel system in the starting process is achieved, and the problems that in the starting process, a fuel-rich generator is prone to high-temperature combustion, and the climbing rate of the fuel system lags behind an oxygen system are solved.

Description

Technical Field

[0001] The invention belongs to the field of engine design and relates to an ignition matching control system for a full-flow secondary combustion cycle engine. Background Art

[0002] The full-flow regenerative cycle engine includes an oxygen-rich system consisting of an oxygen-rich gas generator and an oxidizer main turbine pump, a fuel-rich system consisting of a fuel-rich gas generator and a fuel main turbine pump assembly, and thrust chambers and other components. Liquid oxygen flows directly into the oxygen-rich generator and the fuel-rich generator after passing through the pump. A small portion of the fuel at the outlet of the fuel pump flows directly into the oxygen-rich generator and the liquid oxygen for combustion, while most of the fuel needs to flow through the large-volume, high-flow resistance thrust chamber cooling jacket before entering the fuel-rich generator and the liquid oxygen for combustion. In addition, the low-temperature fuel will also be vaporized in large quantities in the large-volume, high-flow resistance cooling jacket, and the fuel filling process of the fuel-rich generator is slow. The slow fuel supply of the fuel-rich generator can easily lead to deviations in the mixture ratio, high temperatures generated by combustion, and ablation of the fuel-rich generator. On the other hand, the fuel flow rate of the fuel-rich generator is low, and the work capacity growth rate is lower than that of the oxygen-rich system. It is easy for the oxygen-rich system to climb faster than the fuel-rich system, resulting in failure of the starting process. Summary of the invention

[0003] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, propose an ignition matching control system for a full-flow regenerative cycle engine, realize the accelerated filling of the fuel system during the starting process, solve the problems of high-temperature combustion of the rich-fuel generator during the starting process and the lag of the fuel system climbing rate behind the oxygen system, thereby ensuring the normal starting of the engine.

[0004] The solution of the present invention is:

[0005] The ignition matching control system of the full-flow regenerative cycle engine includes an oxygen-rich generator, an oxygen pump turbine, an oxygen pump, a liquid oxygen main valve, a liquid oxygen auxiliary valve, a fuel auxiliary valve, a rich-fuel generator, a fuel pump turbine, a fuel pump, a fuel main valve, a fuel shut-off valve, and a thrust chamber;

[0006] Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines respectively; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine; a helium driving gas source interface is arranged on the fuel turbine.

[0007] In the above-mentioned full-flow combustion cycle engine ignition matching control system, the working process of the control system is:

[0008] At T0, external liquid oxygen enters through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; fuel enters through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve;

[0009] At time T1, the helium driving gas source interface on the fuel pump turbine is opened, external high-pressure helium enters, the fuel pump turbine starts to rotate stably, and the fuel pump generates positive head;

[0010] At T2, the fuel main valve is opened; driven by the positive head of the fuel pump, the fuel flows in a split flow; one of the fuel flows into the thrust chamber cooling jacket to pre-cool the thrust chamber cooling jacket, and then the fuel flows out of the cooling jacket and flows to the inlet of the fuel cut-off valve; the high-pressure helium makes the pipeline pressure high, effectively reducing the boiling of the fuel; the other fuel flows to the inlet of the fuel auxiliary valve;

[0011] At T3, the liquid oxygen main valve and fuel auxiliary valve connected to the oxygen-enriched generator are opened; liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to produce oxygen-enriched combustion gas, and then drive the oxygen pump turbine; the oxygen-enriched combustion gas drives the turbine pump and flows into the thrust chamber;

[0012] Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator; liquid oxygen and fuel flow into the rich oxygen generator, ignite to generate rich fuel gas, and then drive the fuel pump turbine; the rich fuel gas drives the fuel pump turbine and then flows into the thrust chamber;

[0013] The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

[0014] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, at the time T1, high-pressure helium enters to realize forced starting of the fuel pump turbine, ensuring stable flow supply, which is beneficial to the stable filling of the large volume of the thrust chamber.

[0015] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, at the time T2, the main fuel valve is opened in advance to accelerate the filling of the large cavity of the thrust chamber, which is beneficial to the rapid filling of the large cavity of the thrust chamber.

[0016] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, flexible and precise control is achieved through dynamic adjustment control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

[0017] The ignition matching control system of the full-flow staged combustion cycle engine includes an oxygen-rich generator, an oxygen pump turbine, an oxygen pump, a liquid oxygen main valve, a liquid oxygen auxiliary valve, a fuel auxiliary valve, a rich-fuel generator, a fuel pump turbine, a fuel pump, a fuel main valve, a fuel shut-off valve, a precooling discharge valve, and a thrust chamber;

[0018] Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve and the precooling exhaust valve respectively after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine.

[0019] In the above-mentioned full-flow combustion cycle engine ignition matching control system, the working process of the control system is:

[0020] At time T0, external liquid oxygen flows in through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; external fuel flows in through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve;

[0021] At time T1, the fuel main valve is opened, and the fuel flows in a split manner. One path of the fuel enters the thrust chamber cooling jacket to precool the thrust chamber cooling jacket, and then the fuel flows out of the cooling jacket and is discharged to the outside through the precooling discharge valve, completing the low-temperature precooling of the thrust chamber cooling jacket; the other path of the fuel flows to the inlet of the fuel auxiliary valve;

[0022] At T2, the liquid oxygen main valve and fuel sub-valve connected to the oxygen-enriched generator are opened, and liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to generate oxygen-enriched combustion gas, and then drive the oxygen turbine pump; after the oxygen-enriched combustion gas drives the turbine pump, it flows into the thrust chamber;

[0023] Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator, and the liquid oxygen and fuel flow into the rich fuel generator, ignite to generate rich fuel gas, and then drive the fuel turbine pump; after the rich fuel gas drives the turbine pump, it flows into the thrust chamber;

[0024] The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

[0025] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, at the time T1, the main fuel valve is opened in advance to accelerate the filling of the large volume cavity of the thrust chamber, which is beneficial to the rapid filling of the large volume cavity of the thrust chamber.

[0026] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, flexible and precise control is achieved through dynamic adjustment control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

[0027] In the above-mentioned full-flow regenerative cycle engine ignition matching control system, the T0 moment, T1 moment, T2 moment, and T3 moment are arranged in time sequence, and the time interval between two adjacent moments is set according to demand.

[0028] The beneficial effects of the present invention compared with the prior art are:

[0029] (1) The asymmetric driving mode of the fuel-rich system turbo pump of the present invention is driven by high-pressure gas, while the oxygen-rich system is not driven; high-pressure filling ensures the stable supply of low-temperature fuel in the thrust chamber, effectively reduces the boiling degree of the propellant, and reduces the propellant loss;

[0030] (2) The cooling jacket outlet and inlet of the present invention have an adjustable fuel main valve and a fuel stop valve dual valve design, which can fill the thrust chamber cooling jacket in advance;

[0031] (3) The four-way valves of the oxygen-rich system and the fuel-rich system of the present invention are dynamically adjusted to ensure flow matching between the oxygen-rich system and the fuel-rich system during the startup process;

[0032] (4) The present invention sets a precooling discharge valve in front of the fuel shut-off valve to perform precooling discharge of the thrust chamber cooling jacket in advance, so that the low-temperature fuel completes the thrust chamber precooling in advance, removes the boiling propellant, and ensures a stable flow supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the first form of the ignition matching control system of the full-flow secondary combustion cycle engine of the present invention;

[0034] Figure 2 It is a schematic diagram of the second form of the ignition matching control system of the full-flow secondary combustion cycle engine of the present invention; DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] The present invention provides an ignition matching control system for a full-flow regenerative cycle engine, which accelerates the filling of the fuel system during the starting process, solves the problems of high-temperature combustion of the rich-fuel generator during the starting process and the lag of the fuel system climbing rate behind the oxygen system, thereby ensuring normal starting of the engine.

[0037] The present invention designs two kinds of full flow combustion cycle engine ignition matching control systems, such as Figure 1 As shown, the first full-flow regenerative cycle engine ignition matching control system includes an oxygen-rich generator, an oxygen pump turbine, an oxygen pump, a liquid oxygen main valve, a liquid oxygen auxiliary valve, a fuel auxiliary valve, a rich fuel generator, a fuel pump turbine, a fuel pump, a fuel main valve, a fuel shut-off valve, and a thrust chamber. Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines respectively; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine; a helium driving gas source interface is arranged on the fuel turbine.

[0038] The working process of the control system is:

[0039] At T0, external liquid oxygen enters through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; fuel enters through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve;

[0040] At time T1, the helium drive gas source interface on the fuel pump turbine is opened, and external high-pressure helium enters, the fuel pump turbine starts to rotate stably, and the fuel pump generates positive head; at time T1, the high-pressure helium enters to realize forced starting of the fuel pump turbine, ensuring stable flow supply, which is beneficial to the stable filling of the large volume of the thrust chamber.

[0041] At time T2, the main fuel valve is opened; driven by the positive head of the fuel pump, the fuel flows in a split flow; one path of the fuel enters the thrust chamber cooling jacket to pre-cool the thrust chamber cooling jacket, and the fuel then flows out of the cooling jacket and flows to the inlet of the fuel cut-off valve; the high-pressure helium makes the pipeline pressure high, effectively reducing the boiling of the fuel; the other path of the fuel flows to the inlet of the fuel auxiliary valve; at the said time T2, by opening the main fuel valve in advance, the filling of the large volume cavity of the thrust chamber is accelerated, which is beneficial to the rapid filling of the large volume cavity of the thrust chamber.

[0042] At T3, the liquid oxygen main valve and fuel auxiliary valve connected to the oxygen-enriched generator are opened; liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to produce oxygen-enriched combustion gas, and then drive the oxygen pump turbine; after the oxygen-enriched combustion gas drives the turbine pump, it flows into the thrust chamber.

[0043] Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator; liquid oxygen and fuel flow into the rich oxygen generator, ignite to generate rich fuel gas, and then drive the fuel pump turbine; the rich fuel gas drives the fuel pump turbine and then flows into the thrust chamber;

[0044] The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

[0045] Through the dynamic adjustment and control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, flexible and precise control can be achieved, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

[0046] The beneficial effects of the first full-flow regenerative combustion cycle engine ignition matching control system are:

[0047] (1) An asymmetric driving mode in which the turbopump of the fuel-rich system is driven by high-pressure gas and the oxygen-rich system is not driven; high-pressure filling ensures a stable supply of low-temperature fuel in the thrust chamber, effectively reducing the boiling degree of the propellant and reducing the propellant loss.

[0048] (2) The cooling jacket outlet and inlet are designed with dual valves: the main fuel valve and the fuel shut-off valve, which can be adjusted to fill the thrust chamber cooling jacket in advance.

[0049] (3) Dynamic adjustment of the four-way valves of the oxygen-rich system and the fuel-rich system ensures flow matching between the oxygen-rich system and the fuel-rich system during the startup process.

[0050] like Figure 2 As shown, the second full-flow regenerative cycle engine ignition matching control system includes an oxygen-rich generator, an oxygen pump turbine, an oxygen pump, a liquid oxygen main valve, a liquid oxygen auxiliary valve, a fuel auxiliary valve, a rich fuel generator, a fuel pump turbine, a fuel pump, a fuel main valve, a fuel shut-off valve, a pre-cooling discharge valve, and a thrust chamber. Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve and the precooling exhaust valve respectively after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine.

[0051] The working process of the control system is:

[0052] At time T0, external liquid oxygen flows in through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; external fuel flows in through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve;

[0053] At time T1, the main fuel valve is opened, and the fuel flows in a split flow, wherein one path of the fuel enters the thrust chamber cooling jacket to precool the thrust chamber cooling jacket, and the fuel then flows out of the cooling jacket and is discharged to the outside through the precooling discharge valve, thereby completing the low-temperature precooling of the thrust chamber cooling jacket; the other path of the fuel flows to the inlet of the fuel auxiliary valve; at the time T1, the main fuel valve is opened in advance to accelerate the filling of the large volume cavity of the thrust chamber, which is beneficial to the rapid filling of the large volume cavity of the thrust chamber.

[0054] At T2, the liquid oxygen main valve and fuel sub-valve connected to the oxygen-enriched generator are opened, and liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to generate oxygen-enriched combustion gas, and then drive the oxygen turbine pump; after the oxygen-enriched combustion gas drives the turbine pump, it flows into the thrust chamber;

[0055] Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator, and the liquid oxygen and fuel flow into the rich fuel generator, ignite to generate rich fuel gas, and then drive the fuel turbine pump; after the rich fuel gas drives the turbine pump, it flows into the thrust chamber;

[0056] The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

[0057] Through the dynamic adjustment and control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, flexible and precise control can be achieved, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

[0058] Two full-flow regenerative cycle engine ignition matching control systems, wherein the T0 moment, T1 moment, T2 moment, and T3 moment are arranged in time sequence, and the time interval between two adjacent moments is set according to demand.

[0059] The beneficial effects of the second full-flow regenerative cycle engine ignition matching control system are:

[0060] (1) A precooling discharge valve is installed before the fuel shut-off valve to discharge the thrust chamber cooling jacket in advance. The low-temperature fuel completes the thrust chamber precooling in advance, removes the boiling propellant, and ensures a stable flow supply.

[0061] (2) The cooling jacket outlet and inlet are designed with dual valves: the main fuel valve and the fuel shut-off valve, which can be adjusted to fill the thrust chamber cooling jacket in advance.

[0062] (3) Dynamic adjustment of the four-way valves of the oxygen-rich system and the fuel-rich system ensures flow matching between the oxygen-rich system and the fuel-rich system during the startup process.

[0063] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. Full flow combustion cycle engine ignition matching control system, characterized by: It includes an oxygen-rich generator, an oxygen pump turbine, an oxygen pump, a liquid oxygen main valve, a liquid oxygen auxiliary valve, a fuel auxiliary valve, a fuel-rich generator, a fuel pump turbine, a fuel pump, a fuel main valve, a fuel shut-off valve, and a thrust chamber; Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines respectively; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine; a helium driving gas source interface is arranged on the fuel turbine.

2. The full flow secondary combustion cycle engine ignition matching control system according to claim 1 is characterized in that: The working process of the control system is: At T0, external liquid oxygen enters through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; fuel enters through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve; At time T1, the helium driving gas source interface on the fuel pump turbine is opened, external high-pressure helium enters, the fuel pump turbine starts to rotate stably, and the fuel pump generates positive head; At time T2, the main fuel valve is opened; driven by the positive head of the fuel pump, the fuel flows in a split manner; One of the fuel paths enters the thrust chamber cooling jacket to pre-cool the thrust chamber cooling jacket, and then flows out of the cooling jacket to the inlet of the fuel shut-off valve; the high-pressure helium makes the pipeline pressure high, effectively reducing the boiling of the fuel; the other fuel path flows to the inlet of the fuel auxiliary valve; At T3, the liquid oxygen main valve and fuel auxiliary valve connected to the oxygen-enriched generator are opened; liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to produce oxygen-enriched combustion gas, and then drive the oxygen pump turbine; the oxygen-enriched combustion gas drives the turbine pump and flows into the thrust chamber; Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator; liquid oxygen and fuel flow into the rich oxygen generator, ignite to generate rich fuel gas, and then drive the fuel pump turbine; the rich fuel gas drives the fuel pump turbine and then flows into the thrust chamber; The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

3. The full flow secondary combustion cycle engine ignition matching control system according to claim 2 is characterized in that: At the time T1, high-pressure helium enters to realize forced starting of the fuel pump turbine, ensuring stable flow supply, which is beneficial to stable filling of the large volume of the thrust chamber.

4. The full flow secondary combustion cycle engine ignition matching control system according to claim 2 is characterized in that: At the time T2, the main fuel valve is opened in advance to accelerate the filling of the large volume of the thrust chamber, which is beneficial to the rapid filling of the large volume of the thrust chamber.

5. The full flow secondary combustion cycle engine ignition matching control system according to claim 2, characterized in that: Through the dynamic adjustment and control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, flexible and precise control can be achieved, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

6. Full flow combustion cycle engine ignition matching control system, characterized by: It includes oxygen-rich generator, oxygen pump turbine, oxygen pump, liquid oxygen main valve, liquid oxygen auxiliary valve, fuel auxiliary valve, rich fuel generator, fuel pump turbine, fuel pump, fuel main valve, fuel shut-off valve, precooling discharge valve, and thrust chamber; Among them, the thrust chamber is arranged vertically; the oxygen pump and the fuel pump are arranged symmetrically on both sides of the thrust chamber; an oxidant inlet is arranged on the oxygen pump; the oxygen pump turbine is connected to the oxygen pump; the oxygen pump is connected to the input end of the liquid oxygen main valve and the input end of the liquid oxygen auxiliary valve through pipelines; the output end of the liquid oxygen main valve is connected to the input end of the oxygen-rich generator; the output end of the liquid oxygen auxiliary valve is connected to the input end of the rich fuel generator; the output end of the oxygen-rich generator is connected to the thrust chamber after passing through the oxygen pump turbine; a fuel inlet is arranged on the fuel pump; the fuel pump turbine is connected to the fuel pump; the fuel pump outlet is divided into two paths after passing through the fuel main valve; one of which is connected to the thrust chamber; the other is connected to the input end of the fuel auxiliary valve; the output end of the fuel auxiliary valve is connected to the input end of the oxygen-rich generator; the thrust chamber is provided with two output ends, and the two output ends are connected to the input end of the fuel shut-off valve and the precooling exhaust valve respectively after merging; the output end of the fuel shut-off valve is connected to the input end of the rich fuel generator; the output end of the rich fuel generator is connected to the thrust chamber after passing through the fuel pump turbine.

7. The full flow secondary combustion cycle engine ignition matching control system according to claim 6, characterized in that: The working process of the control system is: At time T0, external liquid oxygen flows in through the oxidant inlet of the oxygen pump and flows to the inlet of the liquid oxygen main valve; external fuel flows in through the fuel inlet of the fuel pump and flows to the inlet of the fuel main valve; At time T1, the fuel main valve is opened, and the fuel flows in a split manner. One path of the fuel enters the thrust chamber cooling jacket to precool the thrust chamber cooling jacket, and then the fuel flows out of the cooling jacket and is discharged to the outside through the precooling discharge valve, completing the low-temperature precooling of the thrust chamber cooling jacket; the other path of the fuel flows to the inlet of the fuel auxiliary valve; At T2, the liquid oxygen main valve and fuel sub-valve connected to the oxygen-enriched generator are opened, and liquid oxygen and fuel flow into the oxygen-enriched generator, ignite to generate oxygen-enriched combustion gas, and then drive the oxygen turbine pump; after the oxygen-enriched combustion gas drives the turbine pump, it flows into the thrust chamber; Open the liquid oxygen auxiliary valve and fuel shut-off valve connected to the rich fuel generator, and the liquid oxygen and fuel flow into the rich fuel generator, ignite to generate rich fuel gas, and then drive the fuel turbine pump; after the rich fuel gas drives the turbine pump, it flows into the thrust chamber; The oxygen-rich gas and fuel-rich gas burn in the thrust chamber to generate thrust.

8. The full-flow secondary combustion cycle engine ignition matching control system according to claim 7 is characterized in that: At the time T1, the main fuel valve is opened in advance to accelerate the filling of the large volume of the thrust chamber, which is beneficial to the rapid filling of the large volume of the thrust chamber.

9. The full flow supplementary combustion cycle engine ignition matching control system according to claim 7, characterized in that: Through the dynamic adjustment and control of the four-way valves of liquid oxygen main valve, fuel auxiliary valve, fuel main valve and liquid oxygen auxiliary valve, flexible and precise control can be achieved, and the speed and pressure of the rich fuel system and the rich oxygen system are matched and climbed, ensuring that destructive high temperature does not appear in the generator and thrust chamber.

10. The full flow supplementary combustion cycle engine ignition matching control system according to claim 2 or 7, characterized in that: The T0 moment, T1 moment, T2 moment, and T3 moment are arranged in time sequence, and the time interval between two adjacent moments is set according to demand.

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