Dual-mode composite energetic material out-of-cavity active regulation and control ignition system

Abstract

A dual-mode composite energetic material out-of-cavity active regulation and control ignition system comprises an electric control displacement platform, an upper computer, a vector network analyzer, a microwave signal source, a power amplifier, a directional coupler and a power measurement and display unit, and the electric control displacement platform is connected with a high-temperature-resistant vessel and a microwave resonant cavity. The microwave resonant cavity comprises a metal outer cavity, the metal outer cavity is a hollow cylinder with an opening in the lower end, a bottom cover with a hole is arranged at the lower end opening of the metal outer cavity, the bottom cover with the hole is of an annular shutter structure with an opening in the center, a center probe is further coaxially arranged in the metal outer cavity, and the center probe penetrates through the center opening of the bottom cover with the hole from inside to outside and extends outwards. Switching of two ignition mechanisms is realized by regulating and controlling microwave parameters and ignition areas, and the ignition process suitable for most composite energetic materials is realized; the method can be used for research, development and verification of novel energetic materials and quality detection and real-time ignition of solid rocket propellants, and has very important military application value and scientific research value.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energetic material ignition, and particularly relates to a dual-mode composite energetic material cavity-outside active regulation ignition system. BACKGROUND

[0002] The ignition technology of energetic materials such as solid propellants, metal fuels, high-energy explosives and the like is a core link of propulsion systems, weapon engineering and energy equipment, and the ignition performance of energetic materials directly affects the safety and reliability of the system. Traditional ignition technologies such as ignition powder ignition, electric ignition and the like are limited by low energy density, poor environmental adaptability, large ignition delay and short service life and the like, and new ignition technologies are needed to realize the application in precise control demand scenarios. Microwave ignition technology is a new technology that uses high-intensity electromagnetic fields to realize ignition through material electromagnetic absorption. Compared with traditional ignition methods, microwave ignition has strong selectivity for the material to be ignited, and the energy focusing position is adjustable, which has actual military value.

[0003] Traditional microwave ignition methods generally use high-power microwave tubes to realize energy emission, and materials or particulate matter with strong microwave absorption characteristics are added to the material to be ignited to absorb microwave energy, and heat is generated through material dielectric loss, polarization loss and magnetic loss to achieve the purpose of ignition. However, the traditional method requires high microwave injection power, and lacks the ability to regulate the energy release of the material to be ignited, which may lead to poor ignition consistency and is not conducive to the study of the ignition characteristics of composite energetic materials. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a dual-mode composite energetic material cavity-outside active regulation ignition system, which solves the problem that the existing method requires high microwave injection power and lacks the ability to regulate the energy release of the material to be ignited, which may lead to poor ignition consistency To achieve the above-mentioned purpose, the technical scheme adopted by the present application includes: The application discloses a dual-mode composite energetic material cavity-outside active regulation and ignition system, which comprises an electrically-controlled displacement platform, a high-temperature-resistant container and a microwave resonance cavity which are connected on the electrically-controlled displacement platform, a space for placing the composite energetic material is reserved in the high-temperature-resistant container, and the microwave resonance cavity is located above the high-temperature-resistant container; the microwave resonance cavity comprises a metal outer cavity which is a hollow cylinder with an open lower end, a microwave signal coaxial line interface which is in communication with the inner cavity of the metal outer cavity is arranged outside the metal outer cavity, a bottom cover with a hole is arranged at the lower end of the metal outer cavity, the bottom cover with a hole is in the form of a central opening ring-shaped louver structure, a central probe is coaxially arranged in the metal outer cavity, the central probe passes through the central opening of the bottom cover with a hole from inside to outside and extends outward, and the central probe is not in contact with the central opening of the bottom cover with a hole; the system further comprises a host computer, a displacement control signal output end of the host computer is connected with an input end of the electrically-controlled displacement platform, a vector network analyzer, a microwave signal coaxial line interface of the microwave resonance cavity is connected with a sample S parameter information input end of the vector network analyzer and the host computer in sequence, a microwave signal source, a power amplifier and a directional coupler which are connected with an instrument control standard interface of the host computer in sequence, a coupling signal output end of the directional coupler is connected with a power measurement and display unit, and a straight-through signal output end of the directional coupler is connected with the microwave signal coaxial line interface of the microwave resonance cavity.

[0005] Preferably, the metal outer cavity is a hollow cylinder, and the coupling mode between the central probe and the metal outer cavity is magnetic coupling.

[0006] Preferably, the extension end of the central probe is in the form of a conical needle tip structure.

[0007] Preferably, the geometric size of the conical needle tip structure of the extension end of the central probe is much smaller than the microwave wavelength under the working frequency.

[0008] Preferably, the outer side of the bottom cover with a hole is provided with a bottom cover opening adjusting knob which is mechanically connected with the bottom cover with a hole.

[0009] Preferably, the power measurement and display unit comprises a power attenuator, a logarithmic detector, a single-chip microcomputer and a display screen which are connected in sequence, and the coupling signal output end of the directional coupler is connected with the power attenuator.

[0010] Preferably, the electrically-controlled displacement platform comprises an X-axis linear module, a Y-axis linear module and a Z-axis linear module, the high-temperature-resistant container is fixed with the X-axis linear module and the Y-axis linear module in the horizontal direction, and the microwave resonance cavity is fixed with the Z-axis linear module in the vertical direction.

[0011] Preferably, the microwave resonance cavity is fixed with the Z-axis linear module through a clamp.

[0012] Preferably, the output power of the power amplifier covers 0dBm-50dBm.

[0013] Preferably, the microwave signal source further outputs a synchronization signal.

[0014] Compared with the prior art, the advantages of the present application are: (1) The double-mode composite energetic material cavity-out active regulation ignition system of the present application realizes the switching of two ignition mechanisms through the reasonable setting of components, the regulation of microwave parameters and the ignition area, and realizes the ignition process suitable for most composite energetic materials; specifically, through the triple adjustable design of microwave power parameters, microwave resonant cavity beam adjustment and ignition distance adjustment, the switching transition between the pure microwave absorption ignition mode and the microwave near-field plasma emission ignition mode is realized, the microwave ignition research and realization of composite energetic materials with different physical properties are realized, and the ignition efficiency and reliability are significantly improved.

[0015] (2) The double-mode composite energetic material cavity-out active regulation ignition system of the present application adopts miniaturized integrated design, the ignition system adopts cavity-out ignition mode, ensures that there is a certain distance between the sample and the center probe, ensures safety, and at the same time can reduce cavity pollution and improve system life.

[0016] (3) The double-mode composite energetic material cavity-out active regulation ignition system of the present application adopts an upper computer to complete the complete link of data acquisition, data analysis and control execution, improves control accuracy, and realizes an automatic ignition process.

[0017] (4) The double-mode composite energetic material cavity-out active regulation ignition system of the present application can serve new energetic material research and development verification, solid rocket propellant quality detection and real-time ignition, and has very important military application value and scientific research value. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present application, but do not constitute a limitation on the present application. In the drawings: Figure 1 is a structural schematic diagram of the double-mode composite energetic material cavity-out active regulation ignition system of the present application; Figure 2 is a structural schematic diagram of the microwave resonant cavity in the double-mode composite energetic material cavity-out active regulation ignition system of the present application; Figure 1 is a structural schematic diagram of the double-mode composite energetic material cavity-out active regulation ignition system of the present application; Figure 3 Figure 2 is a structural schematic diagram of the double-mode composite energetic material cavity-out active regulation ignition system of the present application.

[0019] The various reference numerals in the drawings represent: ​1-Host computer, 2-Vector network analyzer, 3-Displacement control signal, 4-Electrically controlled displacement platform, 5-Microwave resonant cavity, 6-Clamp, 7-High-temperature-resistant vessel, 8-Sample S-parameter information, 9-Microwave signal source, 10-Power amplifier, 11-Directional coupler, 12-Straight signal, 13-Coupled signal, 14-Power measurement and display unit, 15-Synchronization signal; 51-Microwave signal coaxial line interface, 52-Metallic outer cavity, 53-Central probe, 54-Perforated bottom cover, 55-Bottom cover opening adjustment knob; 141-Power attenuator, 142-Logarithmic detector, 143-Direct current voltage signal, 144-Single-chip microcomputer, 145-Display screen. DETAILED DESCRIPTION

[0020] The application is not limited to the following specific embodiments, and any equivalent variations made on the basis of the technical solutions of the present application fall within the protection scope of the present application.

[0021] It should be noted that the directional terms mentioned in the present application, such as “inner cavity”, “inner periphery”, “inner wall” and “outer side”, are consistent with the specific directions on the paper of the drawings or the corresponding directions of the space shown in the drawings; all components and devices in the present application, unless otherwise specified, all use components and devices known in the prior art.

[0022] EMBODIMENT As Figure 1 and Figure 2 The present embodiment discloses a dual-mode composite energetic material cavity-outside active control ignition system, which comprises an electrically controlled displacement platform 4, a high-temperature-resistant vessel 7 and a microwave resonant cavity 5 connected on the electrically controlled displacement platform 4, the high-temperature-resistant vessel 7 has a space for placing a composite energetic material, and the microwave resonant cavity 5 is located above the high-temperature-resistant vessel 7; the high-temperature-resistant vessel 7 of the present embodiment can be selected as a high-temperature-resistant alumina crucible; a composite energetic material (hereinafter referred to as a sample) is placed in the high-temperature-resistant vessel 7 and ignited by the microwave resonant cavity 5 above; the electrically controlled displacement platform 4 can adaptively adjust the relative position / displacement of the microwave resonant cavity 5 and the high-temperature-resistant vessel 7 according to the actual required working conditions. The microwave resonant cavity 5 includes a metal outer cavity 52, which is a hollow cylinder with an opening at the lower end. A microwave signal coaxial interface 51 communicating with the inner cavity is provided on the outside of the metal outer cavity 52 to couple microwave signals into the inner cavity of the metal outer cavity 52, so that the electromagnetic field resonates inside. A perforated bottom cover 54 is provided at the lower end of the metal outer cavity 52. ​​The perforated bottom cover 54 is an annular louver structure with a central opening. In this embodiment, the perforated bottom cover 54 is composed of multiple gold-plated copper sheets to form an annular louver structure. A central probe 53 is also coaxially provided inside the metal outer cavity 52. ​​The central probe 53 passes through the central opening of the perforated bottom cover 54 from the inside to the outside and protrudes outward. The central probe 53 does not contact the central opening of the perforated bottom cover 54 to ensure the implementation of external ignition. At the same time, the central probe 53 is always at a certain distance from the sample. It also includes a host computer 1. The displacement control signal output terminal of the host computer 1 is connected to the input terminal signal of the electronically controlled displacement platform 4 to realize the control of the relative position / displacement of the microwave resonant cavity 5 and the high-temperature resistant vessel 7. Its displacement can be uploaded to the host computer 1 in real time through the serial communication interface. The displacement control is a closed-loop control signal with feedback. It also includes a vector network analyzer 2. The microwave signal coaxial interface 51 of the microwave resonant cavity 5 is connected in series with the sample S-parameter information input terminals of the vector network analyzer 2 and the host computer 1. When the electrically controlled displacement platform 4 adjusts the distance between the microwave resonant cavity 5 and the high-temperature resistant vessel 7, the vector network analyzer 2 measures the sample S-parameter information 8 in real time. The sample S-parameter information 8 includes amplitude and phase. The sample S-parameter information 8 is transmitted to the host computer 1. The host computer 1 records the frequency curve of the sample S-parameter information 8 and uses the extreme value determination algorithm to calibrate the resonant frequency, thereby determining the microwave frequency for the sample being ignited. The extreme value determination algorithm in this embodiment is a basic algorithm known to those skilled in the art. It reads the values ​​of the S-parameters at each frequency in sequence, finds the maximum absolute value of the S-parameters, finds the frequency value corresponding to the maximum value, and ends.

[0023] It also includes a microwave signal source 9, a power amplifier 10, and a directional coupler 11 connected in series with the instrument control standard interface of the host computer 1. The coupling signal output terminal of the directional coupler 11 is connected to the power measurement and display unit 14, and the direct signal output terminal of the directional coupler 11 is connected to the microwave signal coaxial interface 51 of the microwave resonant cavity 5. The host computer 1 controls the microwave signal source 9 through the serial interface, and the microwave signal source 9 generates an ignition microwave signal of a certain frequency and power, which is then input into the power amplifier 10 to amplify the power of the microwave signal generated by the microwave signal source 9. The amplified microwave signal is input to the directional coupler 11. The directional coupler 11 divides the amplified microwave signal into two signals based on a certain ratio (e.g., 1:99). The lower-power signal is the coupling signal 13, and the higher-power signal is the direct signal 12. The coupling signal 13 is connected to the power measurement and display unit 14. The power measurement and display unit 14 is used to measure and display the microwave power of its branch in real time, and to realize the conversion of the other microwave power through the setting of internal preset parameters, thus completing the display of the microwave power in the microwave resonant cavity 5. The direct signal 12 is connected to the microwave resonant cavity 5 and is used for the ignition of the composite energetic material. For composite energetic materials with strong microwave absorption (such as ionic compounds, iron-based metal oxides, etc.), a simple electromagnetic wave absorption ignition mode is adopted: the central probe 53 is positioned far from the sample by the electrically controlled displacement platform 4, the opening diameter is increased by adjusting the perforated bottom cover 54 of the microwave resonant cavity 5, and the microwave signal source 9 is controlled by the host computer 1 to reduce the microwave output power, thereby increasing the microwave beam width and reducing the energy density, and the output microwave uniformly covers the surface of the energetic material to be ignited. For composite energetic materials with weak microwave absorption (such as metal mixtures), a simple electromagnetic wave absorption ignition mode is adopted. Microwave near-field plasma emission ignition mode: The central probe 53 is brought close to the sample by the electrically controlled displacement platform 4, and the opening diameter is reduced by adjusting the bottom cover 54 of the microwave resonant cavity 5. The microwave signal source 9 is controlled by the host computer 1 to increase the microwave output power, so that the microwave is focused on the tip of the central probe 53 and forms a strong electric field. The air near the tip and some sample molecules emit high-temperature plasma under the action of the strong electric field, realizing the local ignition of the composite energetic material. That is, the two ignition mechanisms can be switched by adjusting the microwave parameters and the ignition area, realizing the ignition process applicable to most composite energetic materials.

[0024] In this embodiment, the metal outer cavity 52 is a hollow cylinder, and the coupling method between the central probe 53 and the metal outer cavity 52 is magnetic coupling. The extension end of the central probe 53 is a conical needle tip structure, which strengthens the electric field locally. The geometric dimensions of the conical needle tip structure at the extension end of the central probe 53 are much smaller than the microwave wavelength at the working frequency. The geometric dimensions of the conical needle tip structure at the extension end of the central probe 53 refer to the diameter of the needle tip of the central probe 53. In this embodiment, it is preferably 100μm~500μm. The perforated bottom cover 54 is provided with a bottom cover opening adjustment knob 55 that is mechanically connected to it, so as to realize the adjustment of the central opening diameter of the perforated bottom cover 54.

[0025] In this embodiment, the adjustment knob 55 adjusts the opening diameter of the bottom hole of the perforated bottom cover 54 in the same way as a manual aperture adjuster. Figure 3 As shown, its structure consists of an inner anchor point fixing ring 542, an outer anchor point fixing ring 543, and an adjusting knob 55 for the arc-shaped blades 541. The arc-shaped blades 541 consist of nine or more blades, arranged in a circular pattern along the inner anchor point fixing ring. Their inner ends are all fixed to the inner anchor point fixing ring, and their outer ends are all fixed to the outer anchor point fixing ring. The outer anchor point fixing ring is composed of several metal ring segments and deformable springs connected end-to-end. When the adjusting knob 55 is rotated clockwise, the outer anchor point fixing ring rotates clockwise, and the arc-shaped blades 541 unfold simultaneously, increasing the central aperture. Conversely, when the adjusting knob 55 is rotated counterclockwise, the central aperture decreases, thus achieving the aperture adjustment function.

[0026] The power measurement and display unit 14 in this embodiment includes a power attenuator 141, a logarithmic detector 142, a microcontroller 144, and a display screen 145 connected in series. The coupling signal output terminal of the directional coupler 11 is connected to the power attenuator 141. The coupling signal 13 is appropriately attenuated by the power attenuator 141 and input to the logarithmic detector 142. The logarithmic detector 142 converts the signal power into a DC voltage signal 143 and outputs it, with the power magnitude and voltage magnitude having a linear relationship. The microcontroller 144 receives the DC voltage signal 143 in real time, calculates the power corresponding to the DC voltage, sets the actual attenuation offset, and outputs the power value of the signal input to the microwave resonant cavity 5 to the display screen 145 for display in real time.

[0027] The electrically controlled displacement platform 4 in this embodiment has a three-axis precision displacement function, including an X-axis linear module, a Y-axis linear module, and a Z-axis linear module. The high-temperature resistant vessel 7 is fixed to the horizontal X-axis linear module and the Y-axis linear module to control the ignition position of the energetic material. The microwave resonant cavity 5 is fixed to the vertical Z-axis linear module. In this embodiment, the microwave resonant cavity 5 is fixed to the Z-axis linear module through a clamp 6 to control the distance between the microwave resonant cavity 5 and the sample, thereby adjusting the ignition mode of the microwave resonant cavity 5.

[0028] The clamp 6 in this embodiment can be any existing clamping component on the market that can clamp and fix a cylindrical structure; it will not be described in detail here.

[0029] This embodiment can adjust the output power in multiple levels or continuously, and with multiple power amplifiers 10 of different gains, the output power can be adjusted over a wide range from 0dBm to 50dBm. The igniter required for different composite energetic materials is determined by the known microwave absorption characteristics of the materials. The microwave power is gradually increased from small to large until the energetic material can be ignited. In this embodiment, the microwave signal source 9 will also output a synchronization signal 15 for synchronization of a high-speed camera or spectrometer.

[0030] The usage procedure of the dual-mode composite energetic material extracavity active ignition control system in this embodiment is as follows: The first step is to select the first method, the simple electromagnetic wave absorption ignition mode. The sample to be ignited is placed in the high-temperature resistant container 7. The host computer 1 outputs the displacement control signal 3 to the electronically controlled displacement platform 4 to adjust the distance between the sample and the tip of the center probe 53 of the microwave resonant cavity 5, keeping it at a large value, such as >3mm. The bottom cover opening adjustment knob 55 is adjusted to keep the opening at a large value, such as >5mm. The vector network analyzer 2 measures the frequency scanning curve of the sample's S-parameters and transmits it to the host computer 1, which completes the frequency calibration.

[0031] The second step is to disconnect the microwave resonant cavity 5 from the vector network analyzer 2, connect the microwave resonant cavity 5 to the straight-through end of the directional coupler 11, determine the microwave power as needed, and control the upper computer 1 to set the frequency and power value of the microwave signal output by the microwave signal source 9, and adjust the frequency to keep it consistent with the resonant frequency of the microwave resonant cavity 5.

[0032] The third step involves the host computer 1 controlling the microwave signal source 9 to output a signal, while the microwave signal source 9 outputs a synchronization signal 15, which can be used to synchronize the operation of a high-speed camera or spectrometer. The microwave signal is amplified by the power amplifier 10 and then input to the directional coupler 11. The directional coupler 11 connects the coupling signal 13 to the power display unit 14 and inputs the direct signal 12 into the microwave resonant cavity 5, thereby igniting the energetic material.

[0033] In the fourth step, after the coupled signal 13 is input to the power display unit 14, it first undergoes appropriate signal attenuation through the power attenuator 141. The logarithmic detector 142 converts the attenuated signal into a DC voltage signal 143. After data processing by the microcontroller 144, the DC voltage signal 143 is converted into corresponding power data and input to the display screen 145 for display. This completes the microwave ignition and data recording for the energetic material.

[0034] Fifth step, select the second method, microwave near-field plasma emission ignition mode, place the sample to be ignited in the high-temperature resistant container 7, the host computer 1 outputs the displacement control signal 3 to the electronically controlled displacement platform 4, adjust the distance between the sample and the tip of the center probe 53 of the microwave resonant cavity 5 to keep a small value <1mm, adjust the bottom cover opening adjustment knob 55 to keep the opening a small value such as <2mm, the vector network analyzer 2 measures the sample S-parameter frequency scanning curve and transmits it to the host computer 1, the host computer 1 completes the frequency calibration.

[0035] Step six: Complete steps two, three, and four in sequence to complete ignition.

[0036] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0038] Furthermore, the various implementation methods disclosed in this solution can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content invented by this disclosure.

Claims

1. A dual-mode composite energetic material extracavitary active control ignition system, characterized in that, It includes an electrically controlled displacement platform (4), on which a high-temperature resistant vessel (7) and a microwave resonant cavity (5) are connected. The high-temperature resistant vessel (7) has space for placing composite energetic materials, and the microwave resonant cavity (5) is located above the high-temperature resistant vessel (7). The microwave resonant cavity (5) includes a metal outer cavity (52), which is a hollow cylinder with an opening at the lower end. The outer side of the metal outer cavity (52) is provided with a microwave signal coaxial interface (51) communicating with its inner cavity. The lower port of the metal outer cavity (52) is provided with a perforated bottom cover (54), which is a ring-shaped louver structure with a central opening. A central probe (53) is also coaxially provided inside the metal outer cavity (52). The central probe (53) passes through the central opening of the perforated bottom cover (54) from the inside to the outside and protrudes outward. The central probe (53) does not contact the central opening of the perforated bottom cover (54). It also includes a host computer (1), whose displacement control signal output terminal is connected to the input terminal of the electronically controlled displacement platform (4), and a vector network analyzer (2), whose microwave signal coaxial interface (51) of the microwave resonant cavity (5) is connected in series with the sample S-parameter information input terminals of the vector network analyzer (2) and the host computer (1). It also includes a microwave signal source (9), a power amplifier (10) and a directional coupler (11) connected in series with the instrument control standard interface of the host computer (1). The coupling signal output of the directional coupler (11) is connected to the power measurement and display unit (14), and the direct signal output of the directional coupler (11) is connected to the microwave signal coaxial line interface (51) of the microwave resonant cavity (5).

2. The dual-mode composite energetic material extracavity active control ignition system as described in claim 1, characterized in that, The outer metal cavity (52) is a hollow cylinder, and the coupling between the central probe (53) and the outer metal cavity (52) is magnetic coupling.

3. The dual-mode composite energetic material extracavity active control ignition system as described in claim 2, characterized in that, The extension end of the central probe (53) has a tapered tip structure.

4. The dual-mode composite energetic material extracavity active control ignition system as described in claim 3, characterized in that, The geometric dimensions of the tapered tip structure at the extended end of the central probe (53) are much smaller than the microwave wavelength at the operating frequency.

5. The dual-mode composite energetic material extracavity active control ignition system as described in claim 4, characterized in that, The perforated bottom cover (54) has a bottom cover opening adjustment knob (55) mechanically connected to its outer side.

6. The dual-mode composite energetic material extracavity active controlled ignition system as described in any one of claims 1-5, characterized in that, The power measurement and display unit (14) includes a power attenuator (141), a logarithmic detector (142), a microcontroller (144), and a display screen (145) connected in series. The signal output of the directional coupler (11) is connected to the power attenuator (141).

7. The dual-mode composite energetic material extracavity active controlled ignition system as described in any one of claims 1-5, characterized in that, The electrically controlled displacement platform (4) includes an X-axis linear module, a Y-axis linear module and a Z-axis linear module. The high-temperature resistant vessel (7) is fixedly connected to the X-axis linear module and the Y-axis linear module in the horizontal direction, and the microwave resonant cavity (5) is fixedly connected to the Z-axis linear module in the vertical direction.

8. The dual-mode composite energetic material extracavity active control ignition system as described in claim 7, characterized in that, The microwave resonant cavity (5) is fixed to the Z-axis linear module by a clamp (6).

9. The dual-mode composite energetic material extracavity active controlled ignition system as described in any one of claims 1-5, characterized in that, The output power of the power amplifier (10) covers 0dBm to 50dBm.

10. The dual-mode composite energetic material extracavity active controlled ignition system as described in any one of claims 1-5, characterized in that, The microwave signal source (9) will also output a synchronization signal (15).

Images