CN110469426B - Solid rocket engine with continuously adjustable thrust and solid rocket - Google Patents
Solid rocket engine with continuously adjustable thrust and solid rocket Download PDFInfo
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- CN110469426B CN110469426B CN201910778824.4A CN201910778824A CN110469426B CN 110469426 B CN110469426 B CN 110469426B CN 201910778824 A CN201910778824 A CN 201910778824A CN 110469426 B CN110469426 B CN 110469426B
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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
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/26—Burning control
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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
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/28—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants having two or more propellant charges with the propulsion gases exhausting through a common nozzle
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Abstract
Description
技术领域technical field
本发明涉及固体火箭发动机技术领域,具体是一种推力连续可调的固体火箭发动机及固体火箭。The invention relates to the technical field of solid rocket motors, in particular to a solid rocket motor with continuously adjustable thrust and a solid rocket.
背景技术Background technique
固体火箭发动机是以固体推进剂为燃料的火箭发动机。它主要包括燃烧室壳体、固体推进剂装药、喷管几部分组成。固体火箭发动机的突出特点是结构简单,所需零部件少、且一般无作动部件。上述特点使得固体火箭发动机可靠性高、维护和操作方便。因此,固体火箭发动机广泛用于各类导弹,各类战术、战略导弹动力系统固体化的趋势也越来越明显。A solid rocket motor is a rocket motor fueled by solid propellant. It mainly consists of combustion chamber shell, solid propellant charge and nozzle. The outstanding features of solid rocket motors are simple structure, few parts required, and generally no moving parts. The above features make the solid rocket motor highly reliable, easy to maintain and operate. Therefore, solid rocket motors are widely used in various missiles, and the trend of solidification of various tactical and strategic missile power systems is becoming more and more obvious.
对于现有的固体或液体火箭发动机,通常使用直接调节流量的方式来控制发动机推力。对于使用固体燃料的火箭发动机,现有调节流量的方式通常为机械调节,该调节方式调节范围较窄,且需要作动部件,例如通过控制阀等方式起到控制流量的作用,最终达到改变推力的效果。而对于使用液体燃料的火箭发动机,一般通过喷注压降来调节流量,该调节及其供应方式比较复杂,零部件多,相对来说可靠性较低。For existing solid or liquid rocket engines, direct flow regulation is often used to control engine thrust. For rocket engines that use solid fuel, the existing method of adjusting the flow is usually mechanical adjustment, which has a narrow adjustment range and requires actuating parts, such as a control valve to control the flow, and ultimately change the thrust Effect. For rocket engines using liquid fuel, the flow rate is generally adjusted by the injection pressure drop. This adjustment and its supply method are more complicated, with many parts and components, and the reliability is relatively low.
发明内容SUMMARY OF THE INVENTION
针对现有技术中固体火箭发动机燃料流量调节范围较窄,且需要作动部件等问题,本发明提供一种推力连续可调的固体火箭发动机及固体火箭,有助于解决传统固体火箭发动机推力调节范围窄,技术难度大的问题和液体火箭发动机供应及调节系统复杂的问题。Aiming at the problems in the prior art that the fuel flow adjustment range of the solid rocket motor is relatively narrow and requires moving parts, the present invention provides a solid rocket motor with continuously adjustable thrust and a solid rocket, which help to solve the problem of traditional solid rocket motor thrust regulation The scope is narrow, the technical difficulty is high, and the liquid rocket engine supply and regulation system is complex.
为实现上述目的,本发明提供一种推力连续可调的固体火箭发动机,包括依次相连的燃气发生组件、燃烧室与尾喷管,所述燃气发生组件包括富氧燃气发生器与贫氧燃气发生器;In order to achieve the above purpose, the present invention provides a solid rocket motor with continuously adjustable thrust, including a gas generating assembly, a combustion chamber and a tail nozzle that are connected in sequence, and the gas generating assembly includes an oxygen-enriched fuel gas generator and an oxygen-depleted fuel gas generator. device;
所述富氧燃气发生器内部设有能够容纳富氧电控固体推进剂的富氧容纳腔,所述富氧燃气发生器上设有能够烧蚀富氧电控固体推进剂产生的富氧燃气的富氧烧蚀电路,所述富氧容纳腔通过富氧燃气通道与燃烧室连通;The oxygen-enriched gas generator is provided with an oxygen-enriched accommodating cavity capable of accommodating an oxygen-enriched electronically controlled solid propellant, and the oxygen-enriched fuel gas generator is provided with an oxygen-enriched fuel gas that can ablate the oxygen-enriched electrically controlled solid propellant. The oxygen-enriched ablation circuit, the oxygen-enriched accommodation cavity is communicated with the combustion chamber through an oxygen-enriched fuel gas channel;
所述贫氧燃气发生器内部设有能够容纳贫氧电控固体推进剂的贫氧容纳腔,所述贫氧燃气发生器上设有能够烧蚀贫氧电控固体推进剂产生的贫氧燃气的贫氧烧蚀电路,所述贫氧容纳腔通过贫氧燃气通道与燃烧室连通;The oxygen-depleted fuel gas generator is provided with an oxygen-depleted accommodating cavity capable of accommodating the oxygen-depleted electronically controlled solid propellant, and the oxygen-depleted fuel gas generator is provided with an oxygen-depleted fuel gas capable of ablating the oxygen-depleted electronically controlled solid propellant. The oxygen-lean ablation circuit is connected with the combustion chamber through the oxygen-lean gas channel;
所述富氧燃气发生器上设有能够控制富氧燃气流量的富氧控制器,所述贫氧燃气发生器上设有能够控制贫氧燃气流量的贫氧控制器。The oxygen-enriched fuel gas generator is provided with an oxygen-enriched controller capable of controlling the flow rate of the oxygen-enriched fuel gas, and the oxygen-depleted fuel gas generator is provided with an oxygen-lean controller capable of controlling the flow rate of the oxygen-enriched fuel gas.
进一步优选的,所述贫氧烧蚀电路包括第一阴极、第一阳极以及与第一阴极、第一阳极分别电联的第一电源,第一阴极、第一阳极之间设有能够烧蚀贫氧电控固体推进剂的贫氧烧蚀腔,所述贫氧控制器设在第一电源上。Further preferably, the oxygen-depleted ablation circuit includes a first cathode, a first anode, and a first power supply electrically connected to the first cathode and the first anode, respectively, and an ablative device is provided between the first cathode and the first anode. The oxygen-depleted ablation cavity of the oxygen-depleted solid propellant is electronically controlled, and the oxygen-depleted controller is set on the first power supply.
进一步优选的,所述富氧烧蚀电路包括第二阴极、第二阳极以及与第二阴极、第二阳极分别电联的第二电源,第二阴极、第二阳极之间设有能够烧蚀富氧电控固体推进剂的富氧烧蚀腔,所述富氧控制器设在第二电源上。Further preferably, the oxygen-enriched ablation circuit includes a second cathode, a second anode, and a second power supply electrically connected to the second cathode and the second anode, respectively, and an ablative device is provided between the second cathode and the second anode. The oxygen-enriched ablation chamber of the oxygen-enriched electronically controlled solid propellant, the oxygen-enriched controller is set on the second power supply.
进一步优选的,所述贫氧燃气发生器为柱状结构,所述贫氧容纳腔为设在贫氧燃气发生器内部的柱形腔;Further preferably, the oxygen-depleted fuel gas generator is of a columnar structure, and the oxygen-depleted accommodating cavity is a cylindrical cavity provided inside the oxygen-depleted fuel gas generator;
所述富氧燃气发生器为套设在贫氧燃气发生器外的空心柱状结构,所述富氧容纳腔为设在富氧燃气发生器内部的环状柱形腔。The oxygen-enriched fuel gas generator is a hollow cylindrical structure sheathed outside the oxygen-depleted fuel gas generator, and the oxygen-enriched accommodating cavity is an annular cylindrical cavity provided inside the oxygen-enriched fuel gas generator.
进一步优选的,第一阴极与第一阳极中的一个为电极棒,另一个为环形电极板,电极棒插装在贫氧电控固体推进剂的轴线位置,环形电极板包裹在贫氧电控固体推进剂的侧壁;Further preferably, one of the first cathode and the first anode is an electrode rod, and the other is a ring-shaped electrode plate, the electrode rod is inserted in the axial position of the oxygen-poor electronically controlled solid propellant, and the ring-shaped electrode plate is wrapped in the oxygen-poor electronically controlled solid propellant. the side walls of the solid propellant;
第二阴极与第二阳极中的均为环形电极板,其中一个环形电极板贴装在富氧电控固体推进剂上内环的壁上,另一个环形电极板贴装在富氧电控固体推进剂上外环的壁上。Both the second cathode and the second anode are annular electrode plates, one annular electrode plate is attached to the wall of the inner ring of the oxygen-rich electrically controlled solid propellant, and the other annular electrode plate is attached to the oxygen-enriched electrically controlled solid propellant propellant on the walls of the outer ring.
进一步优选的,所述富氧燃气发生器为柱状结构,所述富氧容纳腔为设在富氧燃气发生器内部的柱形腔;Further preferably, the oxygen-enriched fuel gas generator has a columnar structure, and the oxygen-enriched accommodating cavity is a cylindrical cavity arranged inside the oxygen-enriched fuel gas generator;
所述贫氧燃气发生器为套设在富氧燃气发生器外的空心柱状结构,所述贫氧容纳腔为设在贫氧燃气发生器内部的环状柱形腔。The oxygen-depleted fuel gas generator is a hollow cylindrical structure that is sheathed outside the oxygen-enriched fuel gas generator, and the oxygen-depleted accommodating cavity is an annular cylindrical cavity provided inside the oxygen-depleted fuel gas generator.
进一步优选的,第二阴极与第二阳极中的一个为电极棒,另一个为环形电极板,电极棒插装在富氧电控固体推进剂的轴线位置,环形电极板包裹在富氧电控固体推进剂的侧壁;Further preferably, one of the second cathode and the second anode is an electrode rod, the other is a ring-shaped electrode plate, the electrode rod is inserted in the axial position of the oxygen-rich electronically controlled solid propellant, and the ring-shaped electrode plate is wrapped in the oxygen-rich electronically controlled solid propellant. the side walls of the solid propellant;
第一阴极与第一阳极中的均为环形电极板,其中一个环形电极板贴装在贫氧电控固体推进剂上内环的壁上,另一个环形电极板贴装在贫氧电控固体推进剂上外环的壁上。Both the first cathode and the first anode are annular electrode plates, one annular electrode plate is attached to the wall of the inner ring on the oxygen-depleted electric control solid propellant, and the other annular electrode plate is attached to the oxygen depleted electric control solid propellant. propellant on the walls of the outer ring.
进一步优选的,所述尾喷管为喇叭状的扩口结构,所述燃烧室与尾喷管上口径较小的一端相连,所述燃烧室上与尾喷管相连的一端设有收口结构。Further preferably, the tail nozzle has a flared flared structure, the combustion chamber is connected to the end of the tail nozzle with a smaller diameter, and the end of the combustion chamber connected to the tail nozzle is provided with a closing structure.
为实现上述目的,本发明还提供一种推力连续可调的固体火箭,包括火箭本体,所述火箭本体上设有上述的推力连续可调的固体火箭发动机。In order to achieve the above object, the present invention also provides a solid rocket with continuously adjustable thrust, including a rocket body, and the rocket body is provided with the aforementioned solid rocket motor with continuously adjustable thrust.
本发明公开了一种推力连续可调的固体火箭发动机及固体火箭,与传统固体火箭发动机不同的是该方案中燃气发生组件设计为两个独立的富氧燃气发生器与贫氧燃气发生器,富氧燃气发生器与贫氧燃气发生器分别装载富氧电控固体推进剂与贫氧电控固体推进剂,通过富氧控制器与贫氧控制器来实时调整富氧电控固体推进剂与贫氧电控固体推进剂气化后产生燃料的流量,进而实现发动机推力的实时连续调节,以满足不同的飞行工况,拓宽发动机的飞行包络,有助于解决传统固体火箭发动机推力调节范围窄,技术难度大的问题和液体火箭发动机供应及调节系统复杂的问题。The invention discloses a solid rocket motor with continuously adjustable thrust and a solid rocket. Different from the traditional solid rocket motor, the gas generating component in this solution is designed as two independent oxygen-enriched gas generators and oxygen-depleted gas generators. The oxygen-enriched gas generator and the oxygen-depleted gas generator are loaded with oxygen-enriched electronically controlled solid propellant and oxygen-depleted electronically controlled solid propellant, respectively. The oxygen-depleted electronically controlled solid propellant generates fuel flow after gasification, thereby realizing real-time continuous adjustment of engine thrust to meet different flight conditions, broadening the flight envelope of the engine, and helping to solve the thrust adjustment range of traditional solid rocket engines. Narrow, technically difficult problems and complex liquid rocket engine supply and regulation systems.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.
图1为本发明实施例中推力连续可调的固体火箭发动机的正向剖视图;1 is a front sectional view of a solid rocket motor with continuously adjustable thrust in an embodiment of the present invention;
图2为本发明实施例中推力连续可调的固体火箭发动机的侧向剖视图;FIG. 2 is a side sectional view of a solid rocket motor with continuously adjustable thrust in an embodiment of the present invention;
图3为本发明实施例中第一阴极、第一阳极与贫氧电控固体推进剂的第一种安装结构图;Fig. 3 is the first installation structure diagram of the first cathode, the first anode and the oxygen-depleted electronically controlled solid propellant in the embodiment of the present invention;
图4为本发明实施例中第二阴极、第二阳极与富氧电控固体推进剂的第一种安装结构图;Fig. 4 is the first installation structure diagram of the second cathode, the second anode and the oxygen-enriched electronically controlled solid propellant in the embodiment of the present invention;
图5为本发明实施例中第二阴极、第二阳极与富氧电控固体推进剂的第二种安装结构图;Fig. 5 is the second installation structure diagram of the second cathode, the second anode and the oxygen-enriched electronically controlled solid propellant in the embodiment of the present invention;
图6为本发明实施例中第一阴极、第一阳极与贫氧电控固体推进剂的第二种安装结构图。FIG. 6 is a second installation structure diagram of the first cathode, the first anode and the oxygen-depleted electronically controlled solid propellant in the embodiment of the present invention.
附图标号说明:1-贫氧电控固体推进剂、2-贫氧燃气发生器、3-富氧电控固体推进剂、4-富氧燃气发生器、5-燃烧室、6-尾喷管、7-富氧燃气通道、8-贫氧燃气通道、9-第一阴极、10-第一阳极、11-第二阴极、12-第二阳极、Description of reference numerals: 1- oxygen-depleted electronically controlled solid propellant, 2- oxygen-depleted gas generator, 3- oxygen-enriched electronically controlled solid propellant, 4-oxygen-enriched gas generator, 5-combustion chamber, 6-tail spray tube, 7-oxygen-enriched fuel gas channel, 8-oxygen-depleted fuel gas channel, 9-first cathode, 10-first anode, 11-second cathode, 12-second anode,
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明的一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
需要说明,本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.
另外,在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
在本发明中,除非另有明确的规定和限定,术语“连接”、“固定”等应做广义理解,例如,“固定”可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接,还可以是物理连接或无线通信连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise expressly specified and limited, the terms "connected", "fixed" and the like should be understood in a broad sense, for example, "fixed" may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection, an electrical connection, a physical connection or a wireless communication connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction between the two elements. unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
另外,本发明各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本发明要求的保护范围之内。In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
如图1-2所示的一种推力连续可调的固体火箭发动机,包括依次相连的燃气发生组件、燃烧室5与尾喷管6,所述燃气发生组件包括富氧燃气发生器4与贫氧燃气发生器2。As shown in Figures 1-2, a solid rocket motor with continuously adjustable thrust includes a gas generating assembly, a
所述富氧燃气发生器4内部设有能够容纳富氧电控固体推进剂3的富氧容纳腔,所述富氧燃气发生器4上设有并未图示的能够烧蚀富氧电控固体推进剂3产生的富氧燃气的富氧烧蚀电路,所述富氧容纳腔通过富氧燃气通道7与燃烧室5连通;其中,富氧电控固体推进剂3由燃料与氧化剂化合聚合形成,富氧电控固体推进剂3中氧化剂的含量远多于燃料,在富氧烧蚀电路通电后,使得富氧电控固体推进剂3中的燃料与氧化剂在烧蚀作用下发生燃烧反应,进而产生富氧燃气,富氧燃气随后流入燃烧室5,由于氧化剂的含量远多于燃料,使得富氧燃气中大部分或全部都是氧化剂。本实施例中的富氧电控固体推进剂3可以通过专利CN106905091A中所公开的电控固体推进剂制备方法获得。The oxygen-enriched
所述贫氧燃气发生器2内部设有能够容纳贫氧电控固体推进剂1的贫氧容纳腔,所述贫氧燃气发生器2上设有并未图示的能够烧蚀贫氧电控固体推进剂1产生的贫氧燃气的贫氧烧蚀电路,所述贫氧容纳腔通过贫氧燃气通道8与燃烧室5连通;其中,贫氧电控固体推进剂1由燃料与氧化剂化合聚合形成,贫氧电控固体推进剂1中氧化剂的含量远少于燃料,在贫氧烧蚀电路通电后,使得贫氧电控固体推进剂1中的燃料与氧化剂在烧蚀作用下发生燃烧反应,进而产生贫氧燃气,贫氧燃气随后流入燃烧室5,由于氧化剂的含量远少于燃料,使得贫氧燃气中大部分或全部都是燃料。本实施例中的贫氧电控固体推进剂1可以通过专利CN106905091A中所公开的电控固体推进剂制备方法获得。The oxygen-depleted
所述富氧燃气发生器4上设有能够控制富氧燃气流量且并未图示的富氧控制器,所述贫氧燃气发生器2上设有能够控制贫氧燃气流量且并未图示的贫氧控制器。通过两个独立的富氧燃气发生器4与贫氧燃气发生器2,富氧燃气发生器4与贫氧燃气发生器2分别装载富氧电控固体推进剂3与贫氧电控固体推进剂1,通过富氧控制器与贫氧控制器来实时调整富氧电控固体推进剂3与贫氧电控固体推进剂1上燃料的流量,进而实现发动机推力的实时连续调节,以满足不同的飞行工况,拓宽发动机的飞行包络,有助于解决传统固体火箭发动机推力调节范围窄,技术难度大的问题和液体火箭发动机供应及调节系统复杂的问题。The oxygen-enriched
通过富氧控制器、贫氧控制器调节富氧烧蚀电路与贫氧烧蚀电路上的电压,达到调节富氧电控固体推进剂3与贫氧电控固体推进剂1上烧蚀反应的反应速率,进而达到调节富氧燃气与贫氧燃气流量的效果,在保持富氧燃气与贫氧燃气的当量比为1的前提下,同时改变贫氧燃气和富氧燃气的流量供应可实现发动机推力的实时连续调节,以满足不同的飞行工况,拓宽发动机的飞行包络。The voltage on the oxygen-enriched ablation circuit and the oxygen-depleted ablation circuit is adjusted by the oxygen-enriched controller and the oxygen-lean controller, so as to adjust the ablation reaction on the oxygen-enriched electronically controlled
优选的,所述贫氧燃气发生器2为柱状结构,所述贫氧容纳腔为设在贫氧燃气发生器2内部的柱形腔;所述富氧燃气发生器4为套设在贫氧燃气发生器2外的空心柱状结构,所述富氧容纳腔为设在富氧燃气发生器4内部的环状柱形腔,在这一结构下,贫氧电控固体推进剂1为柱状结构,富氧电控固体推进剂3为空心柱状结构,本实施例中图示的即为该种结构。Preferably, the oxygen-depleted
此时,贫氧烧蚀电路包括电联的第一电源、第一阴极9与第一阳极10,贫氧控制器设在第一电源上,由于现有技术中的电源自身就具有调节输出电压的功能,因此本实施例中的贫氧控制器集成在第一电源上,此处不再赘述。第一阴极9与第一阳极10中的一个为电极棒,另一个为环形电极板,电极棒插装在贫氧电控固体推进剂1的轴线位置,环形电极板包裹在贫氧电控固体推进剂1的侧壁,即如图3所示;第一阴极9与第一阳极10之间形成烧蚀腔,进而对柱形结构的贫氧电控固体推进剂1进行烧蚀,产生贫氧燃气;富氧烧蚀电路包括电联的第二电源、第二阴极11与第二阳极12,富氧控制器设在第二电源上,由于现有技术中的电源自身就具有调节输出电压的功能,因此本实施例中的富氧控制器集成在第二电源上,此处不再赘述。第二阴极11与第二阳极12中的均为环形电极板,其中一个环形电极板贴装在富氧电控固体推进剂3上内环的壁上,另一个环形电极板贴装在富氧电控固体推进剂3上外环的壁上,即如图4所示;第二阴极11与第二阳极12之间形成烧蚀腔,进而对空心柱形结构的富氧电控固体推进剂3进行烧蚀,产生富氧燃气。At this time, the oxygen-depleted ablation circuit includes a first power supply, a
或者:or:
所述富氧燃气发生器4为柱状结构,所述富氧容纳腔为设在富氧燃气发生器4内部的柱形腔;所述贫氧燃气发生器2为套设在富氧燃气发生器4外的空心柱状结构,所述贫氧容纳腔为设在贫氧燃气发生器2内部的环状柱形腔,在这一结构下,富氧电控固体推进剂3为柱状结构,贫氧电控固体推进剂1为空心柱状结构。The oxygen-enriched
此时,富氧烧蚀电路包括电联的第二电源、第二阴极11与第二阳极12,富氧控制器设在第二电源上,由于现有技术中的电源自身就具有调节输出电压的功能,因此本实施例中的富氧控制器集成在第二电源上,此处不再赘述。第二阴极11与第二阳极12中的一个为电极棒,另一个为环形电极板,电极棒插装在富氧电控固体推进剂3的轴线位置,环形电极板包裹在富氧电控固体推进剂3的侧壁,即如图5所示;第二阴极11与第二阳极12之间形成烧蚀腔,进而对柱形结构的富氧电控固体推进剂3进行烧蚀,产生富氧燃气;贫氧烧蚀电路包括电联的第一电源、第一阴极9与第一阳极10,贫氧控制器设在第一电源上,由于现有技术中的电源自身就具有调节输出电压的功能,因此本实施例中的贫氧控制器集成在第一电源上,此处不再赘述。第一阴极9与第一阳极10中的均为环形电极板,其中一个环形电极板贴装在贫氧电控固体推进剂1上内环的壁上,另一个环形电极板贴装在贫氧电控固体推进剂1上外环的壁上,即如图6所示;第一阴极9与第一阳极10之间形成烧蚀腔,进而对空心柱形结构的贫氧电控固体推进剂1进行烧蚀,产生贫氧燃气。At this time, the oxygen-enriched ablation circuit includes a second power supply, a
进一步优选的,所述尾喷管6为喇叭状的扩口结构,所述燃烧室5与尾喷管6上口径较小的一端相连,所述燃烧室5上与尾喷管6相连的一端设有收口结构,采用先收口后扩口的结构,使得燃气燃烧产生的推力效果更加显著。Further preferably, the
采用同轴安装的贫氧燃气发生器2与富氧燃气发生器4结构可充分提高发动机内部装药空间的体积利用率,携带更多推进剂,增加火箭的射程。当然贫氧燃气发生器2与富氧燃气发生器4并不一定要同轴安装,可根据飞行总体布局在合理位置进行安装。即使贫氧燃气发生器2与富氧燃气发生器4分开安装,通过两个燃气入口进入补燃室亦可。The coaxially installed structure of the oxygen-depleted
本实施例中推力连续可调的固体火箭发动机的具体工作过程为:The specific working process of the solid rocket motor with continuously adjustable thrust in this embodiment is:
首先,可通过多次试验获得贫氧电控固体推进剂1的燃速与电压的关系式:First, the relationship between the burning rate and the voltage of the oxygen-depleted electronically controlled
r1=f(u1)r 1 =f(u 1 )
式中,r1为贫氧电控固体推进剂1的燃速,u1为贫氧烧蚀电路的电压;In the formula, r 1 is the burning rate of the oxygen-depleted electronically controlled
通过测量可获得贫氧电控固体推进剂1的密度ρ1,通过测量贫氧电控固体推进剂1的药柱截面积可获得其燃面面积A1。因此,贫氧电控固体推进剂1的质量流量随电压的变化关系式如下:The density ρ 1 of the oxygen-depleted electrically controlled
其次,通过多次试验可获得富氧电控固体推进剂3的燃速与电压的关系式:Secondly, the relationship between the burning rate and the voltage of the oxygen-enriched electronically controlled
r2=g(u2)r 2 =g(u 2 )
式中,r2为富氧电控固体推进剂3的燃速,u2为富氧烧蚀电路的电压;In the formula, r 2 is the burning rate of the oxygen-enriched electronically controlled
通过测量可获得富氧电控固体推进剂3的密度ρ2,通过测量富氧电控固体推进剂3的药柱截面积可获得其燃面面积A2。因此,富氧电控固体推进剂3的质量流量随电压的变化关系式如下:The density ρ 2 of the oxygen-enriched electrically controlled
固体火箭发动机工作时当量比应为,在给定发动机结构参数和药柱配方的情况下,贫氧燃气发生器2和富氧燃气发生器4的流量只受贫氧烧蚀电路与富氧烧蚀电路的电压影响。因此,可以直接通过调节贫氧烧蚀电路与富氧烧蚀电路的电压使得发动机当量比为1。发动机开始工作时,贫氧燃气发生器2和富氧燃气发生器4同时点火,贫氧燃气和富燃燃气同时进入火箭燃烧室5进行掺混燃烧,燃烧产生的高温高压混合物通过一个先收缩后扩张的尾喷管6加速排出,产生推力。When the solid rocket motor is working, the equivalence ratio should be such that, given the engine structural parameters and grain formula, the flow rates of the oxygen-depleted
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是在本发明的发明构思下,利用本发明说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.
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