JPH0886246A - Two-liquid type propulsion unit - Google Patents

Abstract

PURPOSE: To ensure constantly optimum engine performance by individually controlling fuel and oxidant metering valves, based on an actual mixture ration, based on a computing result obtained as a result of flow rates of fuel and an oxidant being computed from the temperatures, pressures, and volume flow rates of fuel, the temperature of an oxidant, a pressure, and a volume flow rate, and a target mixture ratio. CONSTITUTION: When fuel 3 is fed, a fuel feed amount computer 18 computes the weight and a flow rate of fuel 3 by means of output signals respectively detected by temperature, pressure, and volume flow rate detectors 14, 15, and 16, and a fuel weight signal MF is outputted. Meanwhile, when an oxidant 4 is fed, a weight and a flow rate of the oxidant 4 are computed by an oxidant feed amount computer 23 by means of output signals detected by temperature, pressure, and volume flow rate detectors 19, 20, and 21 to output an oxidant weight signal M0 . An actual mixture ratio signal MR1 is computed by an actual mixture computer 24, an actual mixture ratio signal MR1 is outputted and meanwhile, a preset target mixture ratio signal MR0 is outputted by a target mixture ratio setter 25. A mixture ratio regulator 26 to receive the output signal outputs opening regulation signals SF and SO for fuel and oxidant metering valves 17 and 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-liquid type propulsion device.

[0002]

2. Description of the Related Art In a two-liquid type propulsion device applied to a rocket or the like, thrust is generated by mixing a fuel such as hydrogen and an oxidizer such as oxygen inside a main combustion chamber and burning the mixed gas. ing.

FIG. 2 shows an example of a conventional two-component type propulsion device. Reference numeral 1 is a fuel tank, 2 is an oxidizer tank, and a fuel 3 and an oxidizer tank 2 stored inside the fuel tank 1. The oxidant 4 stored in the fuel tank 1 is respectively stored in the fuel tank 1 by the gas pressure urged via the pressure gas supply pipelines 5 and 6 by a pressure storage tank (not shown).
And, it is adapted to be pushed out from the oxidant tank 2.

The fuel 3 extruded from the fuel tank 1 is supplied to the two-component engine 11 via the fuel supply line 7, and the oxidant 4 extruded from the oxidant tank 2 is the oxidant. Two-component engine 1 via supply line 8
1 is configured to be supplied.

A fuel cutoff valve 9 is provided in the fuel supply line 7, and an oxidant cutoff valve 10 is provided in the oxidant supply line 8. The fuel cutoff valve 9 and the oxidant cutoff valve 1 are provided.
By opening and closing 0, the fuel and the oxidant are supplied to the two-component engine, or the supply is stopped.

Further, the pressure gas supply line 5 leading to the fuel tank 1 is provided with a metering orifice 12 for adjusting the gas pressure with respect to the fuel 3, and the fuel supply line 7 is provided with a metering orifice 12. A metering orifice 13 for adjusting the flow rate of the fuel 3 flowing inside is provided.

In the two-component type propulsion device having the above-described structure, as shown in FIG. 3, the engine performance [A] is maximized when the mixing ratio [M] of the fuel 3 and the oxidizer 4 is set to an appropriate ratio. It is desirable to have a value.

However, the mixing ratio of the fuel 3 and the oxidizer 4 is such that the length of the fuel supply pipe 7 extending from the fuel tank 1 to the two-component engine 11 is the same even in the two-component engine 11 of the same type. The flow resistance and the like change due to the difference in the number of the bent portions, the length of the oxidant supply pipe 8 extending from the oxidant tank 2 to the two-component engine 11, and the number of the bent portions.

Therefore, when the fuel supply line 7 and the oxidant supply line 8 are changed, a system test is performed on the two-component type propulsion device each time, and the optimum engine performance (fuel amount) is obtained. The set value of the metering orifice 13 is determined.

[0010]

However, it is technically complicated and economical to perform a system test on the two-component type propulsion device every time the fuel supply line 7 and the oxidant supply line 8 are changed. There is a problem that it is not a good idea.

In view of the above-mentioned circumstances, the present invention is a two-component type propulsion device which can obtain optimum engine performance (fuel amount) without performing a system test by adding a flow rate check function to the supply pipeline. The purpose is to provide.

[0012]

In order to achieve the above object, in a two-liquid type propulsion apparatus of the present invention, a fuel tank 1 for storing a fuel 3, an oxidant tank 2 for storing an oxidant 4, A fuel supply line 7 for supplying the fuel 3 flowing out of the fuel tank 1 to the two-liquid engine 11, and an oxidant supply line 8 for supplying the oxidant 4 flowing out of the oxidant tank 2 to the two-liquid engine 11. In the two-component propulsion device having a fuel supply valve 7, a fuel metering valve 17 provided in the fuel supply line 7, an oxidant metering valve 22 provided in the oxidant supply line 8, and a fuel flowing through the fuel supply line 7. A fuel temperature detector 14 for detecting the temperature of 3;
A fuel pressure detector 15 for detecting the pressure of the fuel 3 flowing through the fuel supply line 7, a fuel flow rate detector 16 for detecting the volume flow rate of the fuel 3 flowing through the fuel supply line 7, and a fuel temperature detector 14 The temperature detection signal TLF output from the fuel pressure detector 15, the pressure detection signal PLF output from the fuel pressure detector 15, and the flow rate detection signal NLF output from the fuel flow rate detector 16 from the fuel supply line 7 to the two-component engine 11 A fuel supply amount calculator 18 for obtaining the weight flow rate of the fuel 3 to be supplied to the fuel cell and outputting a fuel weight signal MF, and an oxidant temperature detector 19 for detecting the temperature of the oxidant 4 flowing through the oxidant supply conduit 8. An oxidant pressure detector 20 for detecting the pressure of the oxidant 4 flowing through the oxidant supply pipeline 8; and an oxidant flow rate detector for detecting the volume flow rate of the oxidant 4 flowing through the oxidant supply pipeline 8. 21 and oxidizer temperature detector 19 Pressure detection signal PLO to the temperature detection signal TLO output is outputted from the oxidizer pressure sensor 20 Ri
And the flow rate detection signal N output from the oxidant flow rate detector 21
Based on LO and oxidant supply line 8 to two-component engine 11
To calculate the weight flow rate of the oxidant 4 to be supplied to the oxidant 4 and to output the oxidant weight signal M0, and the fuel weight signal MF output from the fuel supply amount calculator 18 and the oxidant supply amount calculation Oxidizer weight signal M0 output from the device 23
Based on the actual mixture ratio calculator 24 for obtaining the actual mixture ratio of the fuel 3 and the oxidizer 4 and outputting the actual mixture ratio signal MR1, and based on the target mixture ratio of the fuel 3 and the oxidizer 4 inputted in advance. Target mixture ratio setter 25 for outputting target mixture ratio signal MR0
And the actual mixing ratio signal M output from the actual mixing ratio calculator 24.
Based on R1 and the target mixing ratio signal MR0 output from the target mixing ratio setter 25, the opening adjusting signal SF for adjusting the opening of the fuel adjusting valve 17 and the opening of the oxidizer adjusting valve 22 are adjusted. Mixing ratio adjuster 26 that outputs an opening adjustment signal SO
It has and.

[0013]

In the two-liquid type propulsion device of the present invention, the fuel temperature detector 14 detects the temperature of the fuel 3 flowing through the fuel supply line 7 and outputs the temperature detection signal TLF, and the fuel pressure detector 15 outputs the fuel. The pressure of the fuel 3 flowing through the supply pipeline 7 is detected and a pressure detection signal PLF is output, and the fuel flow rate detector 16 detects the volume flow rate of the fuel 3 flowing through the fuel supply pipeline 7 to detect the flow rate detection signal NLF. The fuel supply amount calculator 18 outputs the weight flow rate of the fuel 3 supplied from the fuel supply line 7 to the two-component engine 11 based on the temperature detection signal TLF, the pressure detection signal PLF, and the flow rate detection signal NLF. To output the fuel weight signal MF.

Further, the oxidant temperature detector 19 detects the temperature of the oxidant 4 flowing through the oxidant supply line 8 and outputs a temperature detection signal TLO, and the oxidant pressure detector 20 outputs the oxidant pressure line 20. 8 detects the pressure of the oxidant 4 flowing through it and outputs a pressure detection signal PLO, and the oxidant flow rate detector 21 detects the volume flow rate of the oxidant 4 flowing through the oxidant supply conduit 8 and detects the flow rate detection signal. NLO is output, and the oxidizer supply amount calculator 23 supplies the oxidizer from the oxidizer supply pipe 8 to the two-component engine 11 based on the temperature detection signal TLO, the pressure detection signal PLO, and the flow rate detection signal NLO. The weight flow rate of No. 4 is calculated and the oxidizer weight signal M0 is output.

Further, the actual mixture ratio calculator 24 calculates the actual mixture ratio of the fuel 3 and the oxidant 4 based on the fuel weight signal MF and the oxidant weight signal M0, and outputs the actual mixture ratio signal MR1. , The target mixture ratio setter 25 sets the target mixture ratio signal MR0 based on the target mixture ratio of the fuel 3 and the oxidant 4 which is input in advance.
And the mixing ratio adjuster 26 outputs the actual mixing ratio signal MR.
1 and the target mixture ratio signal MR0, the fuel metering valve 17
Opening adjustment signal SF for adjusting the opening of the
And an opening degree adjustment signal SO for adjusting the opening degree of.

When the opening adjustment signals SF and SO are output, the opening of the fuel metering valve 17 provided in the fuel supply pipe 7 and the oxidant supply pipe are controlled by the opening adjustment signals SF and SO. The opening degree of the oxidizer metering valve 22 provided in the passage 8 is set, and the amounts of the fuel 3 and the oxidizer 4 supplied to the two-component engine 11 are constantly adjusted to the amounts that match the target mixing ratio. Measure.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the outline of a two-liquid type propulsion device of the present invention. In the figure, the same parts as those in FIG.

In this embodiment, the fuel for detecting the temperature of the fuel 3 flowing through the fuel supply line 7 and outputting the temperature detection signal TLF is provided downstream of the fuel cutoff valve 9 provided in the fuel supply line 7. The temperature detector 14 and the fuel 3 flowing through the fuel supply line 7.
Is connected to a fuel pressure detector 15 that detects the pressure of the fuel 3 and outputs a pressure detection signal PLF. Further, the volume flow rate of the fuel 3 flowing through the fuel supply pipe 7 is detected downstream thereof to detect the flow rate detection signal. A fuel flow rate detector 16 that outputs NLF is provided, and a fuel metering valve 17 is provided.

Then, based on the temperature detection signal TLF, the pressure detection signal PLF, and the flow rate detection signal NLF, the fuel tank 1
Is provided with a fuel supply amount calculator 18 for determining the weight flow rate of the fuel 3 supplied to the two-component engine 11 from the fuel supply pipe 7 and outputting a fuel weight signal MF. Fuel temperature detector 14 and fuel pressure detector 1
5 and the fuel flow rate detector 16 are connected.

Further, the temperature of the oxidant 4 flowing through the oxidant supply pipe 8 is detected downstream of the oxidant cutoff valve 10 provided in the oxidant supply pipe 8, and a temperature detection signal TLO is output. The oxidant temperature detector 19 and the oxidant pressure detector 20 which detects the pressure of the oxidant 4 flowing through the oxidant supply pipe 8 and outputs a pressure detection signal PLO are connected, and further downstream thereof. An oxidant flow rate detector 21 for detecting the volume flow rate of the oxidant 4 flowing through the oxidant supply pipeline 8 and outputting a flow rate detection signal NLO is provided, and an oxidant metering valve 22 is provided.

Based on the temperature detection signal TLO, the pressure detection signal PLO and the flow rate detection signal NLO, the weight of the oxidizer 4 supplied from the oxidizer tank 2 to the two-component engine 11 through the oxidizer supply line 8. An oxidant supply amount calculator 23 for determining a flow rate and outputting an oxidant weight signal M0 is provided, and the oxidant supply amount calculator 23 is used for the oxidant temperature detector 19, the oxidant pressure detector 20, and the oxidant flow rate. It is connected to the detector 21.

Further, the actual mixing ratio calculator 2 which obtains the actual mixing ratio of the fuel 3 and the oxidizer 4 based on the fuel weight signal MF and the oxidant weight signal M0 and outputs the actual mixing ratio signal MR1.
4, the actual mixing ratio calculator 24 is connected to the fuel supply amount calculator 18 and the oxidant supply amount calculator 23.

Furthermore, a target mixing ratio setter 25 for outputting a target mixing ratio signal MR0 based on the target mixing ratio of the fuel 3 and the oxidizer 4 inputted in advance is provided, and the target mixing ratio signal MR0 and the actual mixing ratio MR0 are mixed. Mixing ratio adjustment for outputting an opening adjustment signal SF for adjusting the opening of the fuel adjustment valve 17 and an opening adjustment signal SO for adjusting the opening of the oxidizer adjustment valve 22 based on the ratio signal MR1. A mixing device 26 is provided, and the mixing ratio adjusting device 26 is connected to the actual mixing ratio calculator 24 and the target mixing ratio setting device 25.

Next, the operation will be described.

When the fuel 3 is supplied from the fuel tank 1 through the fuel supply line 7 to the two-component engine 11, the fuel temperature detector 14 detects the temperature of the fuel 3 flowing through the fuel supply line 7. Then, the fuel pressure detector 15 outputs the temperature detection signal TLF, the fuel pressure detector 15 detects the pressure of the fuel 3 flowing through the fuel supply line 7, and outputs the pressure detection signal PLF.
6 detects the volume flow rate of the fuel 3 flowing through the fuel supply line 7 and outputs a flow rate detection signal NLF.

At this time, the fuel supply amount calculator 18 is based on the temperature detection signal TLF, the pressure detection signal PLF, and the flow rate detection signal NLF, and then the two-liquid engine 11 from the fuel tank 1 through the fuel supply line 7. And calculates the weight flow rate of the fuel 3 supplied to the fuel cell and outputs a fuel weight signal MF.

When the oxidizer 4 is supplied from the oxidizer tank 2 to the two-component engine 11 through the oxidizer supply pipe 8, the oxidizer temperature detector 19 flows through the oxidizer supply pipe 8. The temperature of the oxidant 4 is detected and a temperature detection signal TLO is output, and the oxidant pressure detector 20 detects the pressure of the oxidant 4 flowing through the oxidant supply pipe 8 and outputs a pressure detection signal PLO. Then, the oxidant flow rate detector 21 detects the volumetric flow rate of the oxidant 4 flowing through the oxidant supply pipeline 8 and outputs a flow rate detection signal NLO.

At this time, the oxidant supply amount calculator 23 uses the temperature detection signal TLO, the pressure detection signal PLO, and the flow rate detection signal NLO to supply the two liquids from the oxidant tank 2 through the oxidant supply pipe line 8. The oxidant 4 supplied to the expression engine 11
To calculate the weight flow rate of the oxidant and output an oxidant weight signal M0.

Further, the actual mixture ratio calculator 24 calculates the actual mixture ratio of the fuel 3 and the oxidant 4 based on the fuel weight signal MF and the oxidant weight signal M0, and outputs the actual mixture ratio signal MR1. Then, the target mixture ratio setter 25 inputs the fuel 3
Target mixing ratio signal MR based on the target mixing ratio of
Outputs 0.

On the other hand, the mixture ratio adjuster 26, based on the actual mixture ratio signal MR1 and the target mixture ratio signal MR0, adjusts the opening amount adjustment signal SF for adjusting the opening amount of the fuel adjustment valve 17 and the oxidizer adjustment amount. An opening degree adjustment signal SO for adjusting the opening degree of the valve 22 is output.

Further, the opening of the fuel metering valve 17 provided in the fuel supply line 7 and the oxidant metering valve provided in the oxidant supply line 8 based on the above-mentioned opening adjustment signals SF and SO. As a result of the setting of the opening degree of 22, the fuel 3 and the oxidant 4 in the amounts that match the target mixture ratio are always supplied to the two-component engine 11.

In this embodiment, the two-component engine 11 is used.
The weight flow rate of the fuel 3 is calculated based on the temperature, pressure and volume flow rate of the fuel 3 supplied to the two-component engine 11
The weight flow rate of the oxidant 4 is calculated on the basis of the temperature, pressure and volume flow rate of the oxidant 4 supplied to the Of the fuel metering valve 1 provided in the fuel supply line 7 based on the preset target mixing ratio and the actual mixing ratio.
7 and the oxidant metering valve 22 provided in the oxidant supply line 8
Of the fuel 3 and the oxidizer 4 can be always supplied to the two-component engine 11 in an amount that matches the target mixing ratio, and the fuel supply pipe 7 and the oxidation can be adjusted. It is not necessary to perform the system test even when the agent supply pipe line 8 is changed, and the optimum engine performance (fuel amount) can always be obtained.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0035]

According to the two-component type propulsion device of the present invention, the two-component type engine 11 can be installed in the two-component type engine 11 without performing the system test when the fuel supply line 7 and the oxidant supply line 8 are changed. Since the mixing ratio of the supplied fuel 3 and the supplied oxidant 4 is in an appropriate state, the optimum engine performance (fuel amount) can always be obtained, and it is possible to exert an excellent effect that it is economically advantageous. .

[Brief description of drawings]

FIG. 1 is a schematic view showing an outline of an embodiment of a two-liquid type propulsion device of the present invention.

FIG. 2 is a schematic diagram showing an outline of an example of a conventional two-liquid type propulsion device.

FIG. 3 is an engine performance diagram related to FIG.

[Explanation of symbols]

 1 Fuel Tank 2 Oxidizer Tank 3 Fuel 4 Oxidizer 7 Fuel Supply Pipeline 8 Oxidizer Supply Pipeline 14 Fuel Temperature Detector 15 Fuel Pressure Detector 16 Fuel Flow Rate Detector 17 Fuel Metering Valve 18 Fuel Supply Amount Calculator 19 Oxidizing agent temperature detector 20 Oxidizing agent pressure detector 21 Oxidizing agent flow rate detector 22 Oxidizing agent metering valve 23 Oxidizing agent supply amount calculator 24 Actual mixing ratio calculator 25 Target mixing ratio setter 26 Mixing ratio adjuster TLF Temperature detection Signal PLF Pressure detection signal NLF Flow rate detection signal TLO Temperature detection signal PLO Pressure detection signal NLO Flow rate detection signal MF Fuel weight signal M0 Oxidizer weight signal MR1 Actual mixing ratio signal MR0 Target mixing ratio signal SF Opening adjustment signal SO Opening adjustment signal

Claims (1)

[Claims] 1. A fuel tank (1) for storing a fuel (3)
An oxidant tank (2) for storing the oxidant (4), a fuel supply line (7) for supplying the fuel (3) flowing out of the fuel tank (1) to the two-component engine (11), In a two-component propulsion device having an oxidant supply pipe (8) for supplying an oxidant (4) flowing out of the oxidant tank (2) to a two-liquid engine (11), a fuel supply pipe (7) To adjust the temperature of the fuel (3) flowing through the fuel metering valve (17), the oxidant metering valve (22) provided in the oxidant supply conduit (8), and the fuel supply conduit (7). Fuel temperature detector to detect (14)
A fuel pressure detector (15) for detecting the pressure of the fuel (3) flowing through the fuel supply line (7), and a volume flow rate of the fuel (3) flowing through the fuel supply line (7). The fuel flow rate detector (16), the temperature detection signal (TLF) output from the fuel temperature detector (14), and the fuel pressure detector (1
5) Based on the pressure detection signal (PLF) output from the fuel flow rate detector (16) and the flow rate detection signal (NLF) output from the fuel flow rate detector (16), the two-component engine (11) is fed from the fuel supply line (7).
A fuel supply amount calculator (18) for obtaining a weight flow rate of fuel (3) supplied to the fuel cell and outputting a fuel weight signal (MF),
The oxidant temperature detector (19) for detecting the temperature of the oxidant (4) flowing through the oxidant supply pipeline (8) and the pressure of the oxidant (4) flowing through the oxidant supply pipeline (8) are detected. An oxidant pressure detector (20) for detecting, an oxidant flow rate detector (21) for detecting a volume flow rate of the oxidant (4) flowing through the oxidant supply pipe (8), and an oxidant temperature detector ( 19) temperature detection signal (TLO), oxidant pressure detector (20) pressure detection signal (PLO) and oxidant flow rate detector (21) flow rate detection signal (NLO) An oxidant supply amount calculator for determining the weight flow rate of the oxidant (4) supplied to the two-component engine (11) from the oxidant supply pipeline (8) and outputting the oxidant weight signal (M0) based on (23)
And fuel (3) based on the fuel weight signal (MF) output from the fuel supply amount calculator (18) and the oxidant weight signal (M0) output from the oxidant supply amount calculator (23). The actual mixing ratio with the agent (4) is calculated and the actual mixing ratio signal (MR
1) Outputting the actual mixing ratio calculator (24), and setting the target mixing ratio signal (MR0) based on the target mixing ratio of the fuel (3) and the oxidizer (4) input in advance. Based on the actual mixing ratio signal (MR1) output from the actual mixing ratio calculator (24) and the target mixing ratio signal (MR0) output from the target mixing ratio setting device (25). Mixing ratio adjuster that outputs an opening adjustment signal (SF) for adjusting the opening of the fuel adjustment valve (17) and an opening adjustment signal (SO) for adjusting the opening of the oxidizer adjustment valve (22) (26) A two-component type propulsion device comprising: