CN112431693A - Pin injector, rocket engine and rocket - Google Patents
Pin injector, rocket engine and rocket Download PDFInfo
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- CN112431693A CN112431693A CN202011305556.3A CN202011305556A CN112431693A CN 112431693 A CN112431693 A CN 112431693A CN 202011305556 A CN202011305556 A CN 202011305556A CN 112431693 A CN112431693 A CN 112431693A
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- pintle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/52—Injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a pintle type injector, a rocket engine and a rocket, and relates to the technical field of vehicles, wherein the pintle type injector comprises a pintle and a shaft sleeve sleeved on the pintle, and an annular liquid channel is formed between the shaft sleeve and the pintle; the liquid channel comprises a central flow channel and a self-oscillation cavity which are arranged along the axial direction of the pintle; the self-excited oscillation cavity comprises a contraction section, a sudden expansion section and a straight circular section, and the diameter of a flow passage of the straight circular section is between the contraction section and the sudden expansion section; the central flow passage is communicated with the contraction section, and the diameter of the flow passage of the central flow passage is larger than that of the flow passage of the contraction section; a radial circular seam is formed between one end of the pintle and the outlet end of the shaft sleeve; the rocket engine includes a pintle injector; the rocket engine includes a rocket motor. Through the pintle type injector, the technical problem that a radial liquid film is not easy to break and further atomize under the action of axial airflow under the working condition of high propellant flow in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a pintle injector, a rocket engine and a rocket.
Background
The pin type variable thrust rocket engine has the characteristics of high combustion efficiency, strong adjusting capability, and high surface shutdown property and reliability, and can be used for interstellar orbit entering and landing. The most representative of the engines are the lunar descent engine LMDE planned by Apollo and the 7500N variable thrust descent engine of lunar exploration engineering in China.
In the general technology, the atomization effect and the evaporation and mixing process of the propellant after being sprayed out from a pintle injector directly influence the combustion efficiency and stability of the variable thrust rocket engine.
The liquid-gas pintle type injectors are generally of a liquid-centered design, i.e., the liquid propellant is injected radially through a radial circumferential seam or a series of small holes in the pintle head, and the gas propellant is injected axially through a radial circumferential seam outside the pintle. The radial jet flow and the axial annular jet flow are in cross impact at 90 degrees, so that the propellant is atomized and mixed.
In a variable thrust rocket engine adopting a gas-liquid annular seam type pintle injector, the flow of a propellant is increased along with the increase of working conditions and the increase of thrust under the condition of keeping a mixing ratio unchanged. Wherein, the opening degree of the radial circular seam of the central flow channel is increased along with the increase of the flow of the liquid propellant to form a thicker and continuous radial annular liquid film; due to the expansion of the gas, only a portion of the propellant gas entering the thrust chamber from the outer axial radial circumferential seam acts on the radial liquid film. Therefore, under the working condition of high flow of the propellant, the radial liquid film is not easy to be broken and further atomized under the action of axial airflow.
Disclosure of Invention
The invention aims to provide a pintle type injector, a rocket engine and a rocket, which are used for solving the technical problem that a radial liquid film is not easy to break and further atomize under the action of axial airflow under the working condition of high propellant flow in the prior art.
In a first aspect, the present invention provides a pintle injector comprising: the needle plug comprises a needle plug and a shaft sleeve sleeved on the needle plug, wherein an annular liquid channel is formed between the shaft sleeve and the needle plug; the liquid channel comprises a central flow channel and a self-oscillation cavity which are arranged along the axial direction of the pintle; the self-excited oscillation cavity comprises a contraction section, a sudden expansion section and a straight circular section, and the diameter of a flow channel of the straight circular section is between the contraction section and the sudden expansion section; the central flow passage is communicated with the contraction section, and the diameter of the flow passage of the central flow passage is larger than that of the flow passage of the contraction section; and a radial annular seam is formed between one end of the pintle and the outlet end of the shaft sleeve.
Furthermore, the shaft sleeve adopts a split structure; the shaft sleeve comprises a shaft sleeve body part, a self-excitation cavity part and a shaft sleeve outlet part which are connected, wherein the self-excitation cavity part is provided with a contraction inner molded surface and a sudden expansion inner molded surface which are arranged in parallel, and the shaft sleeve outlet part is provided with a straight round inner molded surface.
Further, a first concave platform is arranged on the peripheral surface of the shaft sleeve body part along the axial direction; the self-excitation cavity part comprises a body, a first boss and a second boss, wherein the first boss and the second boss respectively protrude out of two sides of the body and extend along the axial direction; a second concave platform is axially arranged on the inner circumferential surface of the outlet part of the shaft sleeve; the first boss is fixedly connected to the first concave station, and the second boss is fixedly connected to the second concave station; the contracting inner molded surface is arranged on the body, and the sudden-expanding inner molded surface is arranged on the second boss.
Further, the first boss is in threaded connection with the first concave platform; the second boss is in threaded connection with the second concave table.
Further, after the liquid propellant of the pintle type injector passes through the self-oscillation cavity, the self-attack oscillation frequency is as follows:
wherein a straight pipe is arranged at the central flow passage near the contraction sectionSegment d0Is the diameter of the straight pipe section, 10Is the tube length of the straight tube section; d1Is the diameter of the flow passage of the constriction, d2The diameter of the flow channel of the straight circular section; d is the diameter of the flow channel of the sudden expansion section, and L is the length of the flow channel of the sudden expansion section; alpha is the lower nozzle impingement wall angle.
Further, for said self-oscillation, d1D is the equivalent upper nozzle inlet flow passage diameter, d2D is the diameter of the outlet flow channel of the equivalent lower nozzle, and D-D is the diameter of the equivalent self-oscillation chamber;
the parameter ratio of the self-excited oscillation cavity is as follows: (d)2-d)/(d1-d)∶1.5～2.3，L/(D-d)：0.4～0.7，(D-d)/(d2-d)∶6～9；
Wherein d is the diameter of the pintle connecting rod of the pintle.
Furthermore, the pintle comprises a pintle body, a pintle connecting rod and a pintle head which are connected, and the pintle head protrudes out of the outlet end of the shaft sleeve along the axial direction.
Further, the pintle injector further comprises an injector housing; an annular gas channel is formed between the injector shell and the shaft sleeve; the gas passage is used for providing axial gas flow.
Has the advantages that:
the invention provides a pintle type injector.A liquid channel comprises a central flow channel and a self-excited oscillation cavity which are arranged along the axial direction of a pintle; the self-excited oscillation cavity comprises a contraction section, a sudden expansion section and a straight circular section, and the diameter of a flow channel of the straight circular section is between the contraction section and the sudden expansion section; the central flow passage is communicated with the contraction section, and the diameter of the flow passage of the central flow passage is larger than that of the flow passage of the contraction section; a radial circular seam is formed between one end of the pintle and the outlet end of the shaft sleeve; in the specific working process of the pintle injector, through the arrangement, liquid propellant jet flows into the self-oscillation cavity through the central flow channel, discrete vortexes in the high-speed jet flow are selectively amplified in a shear layer in the self-oscillation cavity to form a large-scale vortex structure, and further cavitation air bags which are symmetrically distributed along the axial direction are formed; the cavitation air bag generates periodic energy gathering and releasing to the incoming flow of the inlet, so that the continuous jet flow is converted into pulse jet flow, and the jet flow has pressure fluctuation and a certain cavitation effect; meanwhile, the large-scale vortex and the oscillation effect of pulse pressure existing in the self-excited oscillation cavity can cause the formation of vortex cavitation and oscillation cavitation in the self-excited oscillation cavity, thereby enhancing the cavitation effect.
In addition, when the pintle injector works in combination with the gas flow channel, the liquid propellant can be sprayed out from the radial circumferential seams to form discrete liquid drops after the liquid propellant passes through the central flow channel and the self-oscillation cavity, and the liquid drops are further crushed and atomized under the action of axial airflow (the gas flow channel can generate the axial airflow); the discrete liquid drops can fully act with axial airflow, and the liquid drops formed by secondary atomization are distributed into a solid conical area in space and fill the downstream flow field of the whole injector.
In a second aspect, the present invention provides a rocket engine comprising: a pintle injector as defined in any preceding embodiment.
Has the advantages that:
the rocket engine provided by the invention comprises the pintle injector, wherein the technical advantages and effects achieved by the rocket engine also comprise the technical advantages and effects achieved by the pintle injector, and are not repeated herein.
In a third aspect, the present invention provides a rocket comprising: the rocket engine of the previous embodiment.
Has the advantages that:
the rocket provided by the invention comprises the rocket engine, wherein the technical advantages and effects achieved by the rocket also comprise the technical advantages and effects achieved by the rocket engine, and are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a cross-sectional view of a pintle injector provided in accordance with embodiments of the present invention;
FIG. 2 is a schematic drawing showing the dimensions of a pintle injector provided in accordance with embodiments of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a schematic representation of cavitation from the cavity in a pintle injector according to embodiments of the present invention.
Icon:
10-a central flow channel; 11-a straight tube section;
21-a constriction section; 22-sudden expansion section; 23-straight circle section;
30-radial circular seam;
110-pintle body; 120-pintle connecting rod; 130-pintle head;
210-a shaft sleeve body portion; 220-from the excitation chamber part; 230-shaft sleeve outlet part; 221-a body; 222 — a first boss; 223-a second boss;
300-injector housing;
w represents a discrete vortex; n represents an air bladder; p represents an air bubble.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The present embodiment provides a pintle injector, as shown in fig. 1, the pintle injector includes a pintle and a shaft sleeve sleeved on the pintle, and an annular liquid channel is formed between the shaft sleeve and the pintle; the liquid channel comprises a central flow channel 10 and a self-oscillation cavity which are arranged along the axial direction of the pintle; the self-excited oscillation cavity comprises a contraction section 21, a sudden expansion section 22 and a straight circular section 23, and the diameter of a flow channel of the straight circular section 23 is between the contraction section 21 and the sudden expansion section 22; the central flow passage 10 is communicated with the contraction section 21, and the diameter of the flow passage of the central flow passage 10 is larger than that of the contraction section 21; a radial circumferential seam 30 is formed between one end of the pintle and the outlet end of the hub.
As shown in fig. 2, in the specific working process of the pintle injector, through the arrangement, the liquid propellant jet enters the self-oscillation cavity through the central flow channel 10, discrete vortexes in the high-speed jet are selectively amplified in a shear layer in the self-oscillation cavity to form a large-scale vortex structure, and further cavitation airbags which are symmetrically distributed along the axial direction are formed; the cavitation air bag generates periodic energy gathering and releasing to the incoming flow of the inlet, so that the continuous jet flow is converted into pulse jet flow, and the jet flow has pressure fluctuation and a certain cavitation effect; meanwhile, the large-scale vortex and the oscillation effect of pulse pressure existing in the self-excited oscillation cavity can cause the formation of vortex cavitation and oscillation cavitation in the self-excited oscillation cavity, thereby enhancing the cavitation effect.
In addition, when the pintle injector works in combination with the gas flow channel, after the liquid propellant passes through the central flow channel 10 and the self-oscillation cavity, the liquid propellant can be sprayed out from the radial annular seam 30 to form discrete liquid drops, and the liquid drops are further crushed and atomized under the action of axial airflow (the gas flow channel can generate the axial airflow); the discrete liquid drops can fully act with axial airflow, and the liquid drops formed by secondary atomization are distributed into a solid conical area in space and fill the downstream flow field of the whole injector. In addition, the pintle type injector can realize better atomization effect under the working conditions of high thrust of an engine and high flow of propellant.
Specifically, the shaft sleeve adopts a split structure; the shaft sleeve comprises a shaft sleeve body part 210, a self-excitation cavity part 220 and a shaft sleeve outlet part 230 which are connected, wherein the self-excitation cavity part 220 is provided with a contraction inner profile and a sudden expansion inner profile which are arranged in parallel, and the shaft sleeve outlet part 230 is provided with a straight round inner profile.
Further, as shown in fig. 3, the outer circumferential surface of the sleeve body portion 210 is provided with a first concave along the axial direction; the self-excitation cavity part 220 comprises a body 221, a first boss 222 and a second boss 223 which respectively protrude from two sides of the body 221 and extend along the axial direction; the inner circumferential surface of the sleeve outlet part 230 is provided with a second concave platform along the axial direction; the first boss 222 is fixedly connected to the first recess land, and the second boss 223 is fixedly connected to the second recess land; the contracting inner profile is disposed on the body 221, and the expanding inner profile is disposed on the second boss 223.
In one embodiment of the present application, the first boss 222 is threadedly coupled with the first recess; the second boss 223 is threadedly coupled to the second recess.
It should be noted that, in the pintle injector in the prior art, the pintle central channel 10 is not designed with the self-oscillation cavity structure of the present application; under the working conditions of high thrust of the engine and high flow of the propellant, the outlet of the radial annular seam 30 is a continuous liquid film; the continuous liquid film is firstly destabilized and broken into liquid threads or liquid belts under the action of the air flow, and then the liquid threads or the liquid belts are further broken into small liquid drops. Because the continuous liquid film can shield axial airflow and deflect the airflow, the final small liquid drop space is distributed into a hollow conical area and is not filled with the downstream flow field of the whole injector.
In this embodiment, as shown in fig. 4, after the liquid propellant of the pintle injector passes through the self-oscillation cavity, the self-attack oscillation frequency is as follows:
wherein, the center flow passage 10 is provided with a straight pipe section 11, d near the contraction section 210Is the diameter of the straight pipe section 11, 10Is the tube length of the straight tube section 11; d1Diameter of flow passage of constriction 21, d2The diameter of the flow channel of the straight circular section 23; d is the diameter of the flow channel of the sudden expansion section 22, and L is the length of the flow channel of the sudden expansion section 22; alpha is the lower nozzle impingement wall angle.
In the present embodiment, α is 180 °.
Further, it is toIn self-excited oscillation, d1D is the equivalent upper nozzle inlet flow passage diameter, d2D is the diameter of the outlet flow channel of the equivalent lower nozzle, and D-D is the diameter of the equivalent self-oscillation chamber;
the parameter ratio of the self-excited oscillation cavity is as follows: (d)2-d)/(d1-d)∶1.5～2.3，L/(D-d)∶0.4～0.7，(D-d)/(d2-d)：6～9；
Where d is the diameter of the pintle connecting rod 120 of the pintle.
In the parameter matching range of the self-excited oscillation cavity structure, a series of test pieces with different sizes are designed and processed, and the atomization performance of different self-excited oscillation cavity structure parameters is screened and compared by using a cold atomization measurement means to obtain a better design scheme.
On the basis of the above embodiment, the pintle comprises a pintle body 110, a pintle connecting rod 120 and a pintle head 130, which are connected, and the pintle head 130 protrudes from the outlet end of the sleeve along the axial direction.
Specifically, a radial circumferential seam 30 is formed between the pintle head 130 and the outlet end of the hub.
As shown in fig. 1, the pintle injector further comprises an injector housing 300; an annular gas channel is formed between the injector shell 300 and the shaft sleeve; the gas passage is used to provide axial gas flow.
In view of the above, the pintle injector has the following advantages: by designing the self-oscillation cavity in the central flow channel 10, under the condition that the injection pressure is not required to be increased, discrete liquid drops can be sprayed out of the radial annular seam 30, the atomization effect under the action of axial airflow is enhanced, and atomized liquid drops with smaller SMD (surface mounted device) are obtained; meanwhile, continuous liquid films in the traditional design are avoided, and more uniform spatial distribution of liquid mist at the downstream of the injector is obtained.
The present embodiment also provides a rocket engine comprising the aforementioned pintle injector. The rocket engine provided by the embodiment comprises the pintle injector, wherein the technical advantages and effects achieved by the rocket engine also comprise the technical advantages and effects achieved by the pintle injector, and further description is omitted here.
Preferably, the rocket engine may be a variable thrust rocket engine.
The present embodiment also provides a rocket including the rocket motor described above. The rocket provided by the embodiment comprises the rocket engine, wherein the technical advantages and effects achieved by the rocket also comprise the technical advantages and effects achieved by the rocket engine, and are not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A pintle injector, comprising: the needle plug comprises a needle plug and a shaft sleeve sleeved on the needle plug, wherein an annular liquid channel is formed between the shaft sleeve and the needle plug; the liquid channel comprises a central flow channel (10) and a self-oscillation cavity which are arranged along the axial direction of the pintle;
the self-oscillation cavity comprises a contraction section (21), a sudden expansion section (22) and a straight circular section (23), and the diameter of a flow passage of the straight circular section (23) is between the contraction section (21) and the sudden expansion section (22); the central flow passage (10) is communicated with the contraction section (21), and the diameter of the flow passage of the central flow passage (10) is larger than that of the flow passage of the contraction section (21);
a radial circumferential seam (30) is formed between one end of the pintle and the outlet end of the shaft sleeve.
2. The pintle injector of claim 1, wherein the hub is of a split configuration;
the shaft sleeve comprises a shaft sleeve body part (210), a self-excitation cavity part (220) and a shaft sleeve outlet part (230) which are connected, wherein the self-excitation cavity part (220) is provided with a contraction inner profile and a sudden expansion inner profile which are arranged in parallel, and the shaft sleeve outlet part (230) is provided with a straight round inner profile.
3. A pintle injector according to claim 2, wherein the outer circumferential surface of the sleeve body (210) is provided with a first recess in the axial direction; the self-excitation cavity part (220) comprises a body (221), a first boss (222) and a second boss (223), wherein the first boss and the second boss respectively protrude from two sides of the body (221) and extend along the axial direction; a second concave platform is arranged on the inner circumferential surface of the shaft sleeve outlet part (230) along the axial direction; the first boss (222) is fixedly connected to the first recess land, and the second boss (223) is fixedly connected to the second recess land;
the contracting inner profile is arranged on the body (221), and the expanding inner profile is arranged on the second boss (223).
4. A pintle injector according to claim 3, wherein the first boss (222) is threadedly connected with the first recess;
the second boss (223) is in threaded connection with the second recess.
5. The pintle injector of claim 1, wherein the liquid propellant of the pintle injector passes through the self-oscillating chamber at a self-tapping oscillation frequency of:
wherein, a straight pipe section (11) is arranged at the position of the central flow passage (10) close to the contraction section (21), and d0Is the pipe diameter, l, of the straight pipe section (11)0Is the tube length of the straight tube section (11); d1Is the diameter of the flow channel of the constriction (21), d2The diameter of the flow channel of the straight circular section (23); d is the diameter of the flow channel of the sudden expansion section (22), and L is the length of the flow channel of the sudden expansion section (22); alpha is the lower nozzle impingement wall angle.
6. Root of herbaceous plantA pintle injector according to claim 5, wherein for the self-oscillation d1D is the equivalent upper nozzle inlet flow passage diameter, d2D is the diameter of the outlet flow channel of the equivalent lower nozzle, and D-D is the diameter of the equivalent self-oscillation chamber;
the parameter ratio of the self-excited oscillation cavity is as follows: (d)2-d)/(d1-d)：1.5～2.3，L/(D-d)：0.4～0.7，(D-d)/(d2-d)：6～9；
Wherein d is the diameter of the pintle connecting rod (120) of the pintle.
7. A pintle injector according to any of claims 1 to 6, wherein the pintle comprises a joined pintle body (110), pintle connecting rod (120) and pintle head (130), the pintle head (130) projecting in the axial direction from the outlet end of the hub.
8. A pintle injector according to any of claims 1-6, further comprising an injector housing (300);
an annular gas channel is formed between the injector shell (300) and the shaft sleeve; the gas passage is used for providing axial gas flow.
9. A rocket engine, comprising: a pintle injector as defined in any one of claims 1 to 8.
10. A rocket, comprising: a rocket engine as recited in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305556.3A CN112431693B (en) | 2020-11-19 | 2020-11-19 | Pin injector, rocket engine and rocket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305556.3A CN112431693B (en) | 2020-11-19 | 2020-11-19 | Pin injector, rocket engine and rocket |
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| CN112431693A true CN112431693A (en) | 2021-03-02 |
| CN112431693B CN112431693B (en) | 2021-11-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756989A (en) * | 2021-09-14 | 2021-12-07 | 中国科学院力学研究所 | Gas/liquid pintle injector with swirl-assisted atomization and adjustable swirl degree |
| CN113982787A (en) * | 2021-11-25 | 2022-01-28 | 西安航天动力研究所 | Scaling method of gas-liquid pintle injector |
| CN114856860A (en) * | 2022-05-06 | 2022-08-05 | 西安交通大学 | Bidirectional adjustable pintle type injector and liquid rocket engine |
| CN114893327A (en) * | 2022-04-15 | 2022-08-12 | 西安航天动力研究所 | Device and method for detecting uniformity of liquid film on outer ring of pintle injector |
| CN117738818A (en) * | 2024-02-21 | 2024-03-22 | 中国人民解放军战略支援部队航天工程大学 | Needle bolt type injector embedded in rotary sliding arc plasma discharge device |
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| CN113982787A (en) * | 2021-11-25 | 2022-01-28 | 西安航天动力研究所 | Scaling method of gas-liquid pintle injector |
| CN113982787B (en) * | 2021-11-25 | 2022-11-18 | 西安航天动力研究所 | Scaling method of gas-liquid pintle injector |
| CN114893327A (en) * | 2022-04-15 | 2022-08-12 | 西安航天动力研究所 | Device and method for detecting uniformity of liquid film on outer ring of pintle injector |
| CN114893327B (en) * | 2022-04-15 | 2023-12-26 | 西安航天动力研究所 | Method for detecting uniformity of liquid film on outer ring of pintle injector |
| CN114856860A (en) * | 2022-05-06 | 2022-08-05 | 西安交通大学 | Bidirectional adjustable pintle type injector and liquid rocket engine |
| CN114856860B (en) * | 2022-05-06 | 2023-06-30 | 西安交通大学 | Two-way adjustable pintle formula injector and liquid rocket engine |
| CN117738818A (en) * | 2024-02-21 | 2024-03-22 | 中国人民解放军战略支援部队航天工程大学 | Needle bolt type injector embedded in rotary sliding arc plasma discharge device |
| CN117738818B (en) * | 2024-02-21 | 2024-04-16 | 中国人民解放军战略支援部队航天工程大学 | Needle bolt type injector embedded in rotary sliding arc plasma discharge device |
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