Pulse filling type power device

Abstract

The invention relates to a pulse filling type power device. The pulse filling type power device comprises a shell; the combustion mechanism comprises a combustion chamber, a spray pipe, an ignition device and a machine head, and the combustion chamber and the spray pipe are fixed to the fixing component; a plurality of explosive columns are stored in the explosive storage device; the power source can provide reciprocating motion; and the explosive supply mechanism can move one explosive column in the explosive storage device into the combustion chamber in the process of one-time reciprocating motion under the action of the reciprocating motion of the power source. According to the design scheme of the novel pulse filling type power device, continuous filling and multi-pulse ignition of solid fuel can be achieved.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace technology, and particularly relates to a pulse solid rocket engine with repeated loading, and more particularly to a pulse power device with repeated loading ability. Background Art

[0002] Solid rocket engines are easy to maintain, have good safety and high reliability, and play an important role as one of the power devices of missiles and rockets. However, for traditional solid rocket engines, since they are power devices that ignite in one go, once the propellant is ignited, it is difficult to interrupt, so it is impossible to achieve thrust termination and multiple start-stop operations.

[0003] A multi-pulse solid rocket engine generally fills multiple propellant units in the combustion chamber, and shares a combustion chamber and a nozzle. By controlling the ignition time interval of each propellant unit, multiple thrust controls can be achieved.

[0004] At present, breakthroughs have been continuously made in the technologies of typical solid multi-pulse engines such as solid variable thrust engines, solid dual-pulse engines, and solid attitude and orbit control engines. Dual-pulse engines, triple-pulse engines and even six-pulse engines have been developed. These multi-pulse engines basically adopt a compartmentalized integrated structure, mainly adding one or two pulse units in the combustion chamber of the rocket engine. However, this solution has the following problems: increasing the volume and free volume of the combustion chamber increases the actual ignition difficulty. The connection between the pulse unit and the combustion chamber makes the grain more vulnerable to the influence of changes in the surrounding environment. The degree of energy distribution discretization is not high, and it is difficult to achieve a higher level of energy distribution and management of the engine.

[0005] For solid rocket engines with more than three pulses, the storage of the grain and the repeated loading of the grain have become new research issues. Summary of the Invention

[0006] Combined with the inventor's research and practical experience in this field, the following improved technical solutions are proposed here.

[0007] A pulse loading type power device, comprising:

[0008] A housing;

[0009] A combustion mechanism, the combustion mechanism includes a combustion chamber, a nozzle, an ignition device, and a nose, and the combustion chamber and the nozzle are fixed to a fixed member;

[0010] A propellant storage device, in which a plurality of grains are stored;

[0011] A power source capable of providing reciprocating motion;

[0012] A medicine supply mechanism, which can, under the action of the reciprocating motion of the power source, move one medicine column in the medicine storage device into the combustion chamber during one reciprocating motion.

[0013] The present invention further includes the following features, which can be used alone or in combination with other features:

[0014] The medicine supply mechanism includes a nose push rod, a nose, a lever, a medicine column transfer part, and a medicine column push rod. The medicine column push rod can move along a direction parallel to the moving direction of the nose to push the medicine column to the medicine column transfer part. The lever can rotate at a certain angle. The medicine column transfer part is fixed at one end of the lever. When the lever rotates, the medicine column limit can move along a direction perpendicular to the moving direction of the nose;

[0015] A slider is provided at the rear end of the medicine supply lever. The slider can move along a direction perpendicular to the reciprocating motion direction. A spring is placed below the slider;

[0016] The nose includes a short front protrusion below the nose and a long rear protrusion below the nose;

[0017] A locking mechanism is further provided on the nose, including two locking pieces. The locking pieces are located on both sides of the nose. The locking pieces are opened under the action of the nose push rod and cooperate with the grooves on the inner wall of the housing for locking;

[0018] The front end of the nose push rod is provided with an inclined surface, which contacts the inclined surface at the rear end of the nose during locking;

[0019] The front end of the nose has a joint, and the joint can fix the medicine column at the front end of the nose through the middle hole of the medicine column;

[0020] The medicine column is a hollow medicine column, and a secondary coil and an ignition medicine are provided at the front end of the medicine column;

[0021] The secondary coil generates an induced current through the primary coil, and the ignition medicine ignites the medicine column through the induced current;

[0022] The medicine storage device has a medicine magazine, which includes a storage part and a medicine discharging part. A spring and a baffle are provided in the storage part.

[0023] The present invention also proposes a method for operating the pulse loading type power device described above, including:

[0024] Operating the power source to make the power source provide a reciprocating motion;

[0025] The medicine supply mechanism reciprocates under the action of the power source, and transports one medicine column in the medicine storage device into the combustion chamber during one reciprocating motion.

[0026] Based on the above technical solutions, the present invention has the following beneficial technical effects:

[0027] A design scheme of a new type of pulse-loading power device is proposed to achieve continuous loading of solid fuel. Other features and advantages of the present invention will be described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Exemplary embodiments of the present invention will be described with reference to the accompanying drawings, wherein:

[0029] Figure 1 Shows an overall schematic diagram of the pulse-loading power device of the present invention.

[0030] Figure 2 Shows a schematic diagram of the internal structure of the pulse-loading power device of the present invention.

[0031] Figure 3 Shows a sectional view of the pulse-loading power device of the present invention.

[0032] Figure 4 Shows a schematic diagram of the pulse-loading power device of the present invention in a working state.

[0033] Figure 5 Shows a schematic diagram of the nose of the pulse-loading power device of the present invention.

[0034] Figure 6 Shows a schematic diagram of the assembled nose and nose push rod of the pulse-loading power device of the present invention.

[0035] Figure 7 Shows a sectional schematic diagram of the assembled nose and nose push rod of the pulse-loading power device of the present invention.

[0036] Figure 8 Shows a schematic diagram of the cartridge latch structure of the pulse-loading power device of the present invention.

[0037] Figure 9 Shows a schematic diagram of the nozzle throat structure of the pulse-loading power device of the present invention.

[0038] Figure 10 Shows a schematic diagram of the grain structure of the pulse-loading power device of the present invention.

[0039] Figure 11 Shows a schematic diagram of the misfired grain collection mechanism of the pulse-loading power device of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following describes the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0041] Figure 1Shows the overall schematic diagram of the pulse-loading power device of the present invention. Figure 2 Shows the internal structural schematic diagram of the pulse-loading power device of the present invention. Figure 3 Shows the cross-sectional view of the pulse-loading power device of the present invention. Specifically, the pulse-loading power device of the present invention includes a medicine storage device and a medicine supply mechanism. Combining Figures 1 to 3 It can be seen that the medicine storage device includes a medicine cartridge 1, and a plurality of medicine columns 5 can be accommodated in the medicine cartridge 1. The main structure of the medicine column 5 is a cylinder (in Figure 2 and Figure 3 shows the position of the medicine column 5 in the medicine cartridge 1, and a single medicine column is shown in Figure 10 ). A medicine column baffle 3 and a medicine cartridge spring 2 are also arranged in the medicine cartridge 1. The medicine column baffle 3 is used to support the medicine column 5. After the medicine column 5 is loaded, the medicine column 5 exerts a force on the medicine cartridge spring 2 through the medicine column baffle 3, so that the medicine cartridge spring 2 is in a compressed state. Correspondingly, the medicine cartridge spring 2 exerts an upward force on the medicine column 5, so that there is always a medicine column 5 in a position where it can be transported.

[0042] Figure 9 Shows the structural schematic diagram of the nozzle throat of the pulse-loading power device of the present invention. Figure 10 Shows the structural schematic diagram of the medicine column of the pulse-loading power device of the present invention. Conical parts are arranged at both ends of the cylindrical body of the medicine column 5. Among them, a second coil bobbin 34 is also arranged at one end facing the nozzle, and a second coil is arranged thereon. Correspondingly, as Figure 8 shown, a first coil bobbin 33 is also arranged at the nozzle throat, and a first coil is arranged thereon. An induced current can be generated between the first coil and the second coil to ignite the medicine column, realizing non-contact ignition of the medicine column.

[0043] The pulse-loading power device includes a split housing, specifically including a first housing 9 and a second housing 18. The first housing 9 and the second housing 18 are connected by thread fasteners, etc. to form an integral body. Of course, an integral housing can also be provided. The housing, as a fixed component, provides support for other components. As an exemplary implementation manner, Figure 3 the first housing 9 and the second housing 18 are shown in two different colors in

[0044] As a preferred implementation manner, the medicine cartridge 1 is fixed on the first housing 9 of the pulse-loading power device through a medicine cartridge catch 4. Figure 8 Shows the structural schematic diagram of the medicine cartridge catch of the pulse-loading power device of the present invention. See Figure 7The medicine box clip 4 includes a body, on which a latch 31 and a torsion spring 32 are arranged. The body of the medicine box clip 4 is fixed to the first housing 9 through the latch 31, and the body fixes the medicine box 1 to the housing 18 under the action of the torsion spring 32. For example, a Figure 2 As shown in the groove, one end of the body is inserted into the groove, so that the medicine box 1 is fixed relative to the shell.

[0045] The drug supply mechanism is used to allow the drug column 5 in the drug box 1 to enter the combustion chamber 8. The combustion chamber 8 is fixed to the nozzle 7 by bolts. Figures 1 to 3 The charge push rod 6 is located above the medicine magazine 1 and can move along a channel preferably provided with a guide rail in the first shell 9, so that the charge is moved out of the medicine magazine 1 by its own movement and enters the combustion chamber 8 through the lifting and translation movement to be described in detail below.

[0046] exist Figure 2 In the figure, an electric cylinder 20 and an electric cylinder support 19 as a power source are also shown. The machine head push rod 17 is connected to the electric cylinder 20 and can reciprocate under the action of the electric cylinder, thereby driving other components connected thereto to move.

[0047] Figure 5 A schematic diagram of the nose of the pulse loading power device of the present invention is shown. Figure 6 A schematic diagram showing the assembly of the head and the head push rod of the pulse loading power device of the present invention is shown. Figure 7 The figure shows a cross-sectional view of the head and the head push rod of the pulse loading power device of the present invention after being assembled. Figure 5 and Figure 6 , Figure 7 It can be seen that the handpiece 16 has a joint 27 connected to the medicine column 5 at one end, and is partially hollow and has strip grooves on both sides of the other end. A locking piece 15 is provided on the side between the joint 27 and the strip groove. Figure 6 It can be clearly seen in the cross-sectional view shown that the head push rod 17 is provided with a cross bar perpendicular to the axial direction of the head push rod 17, and the two ends of the cross bar are located at or beyond the strip groove of the head 16. A groove is also provided at a corresponding position on the housing for the cross bar to slide therein.

[0048] like Figure 5 As shown, a joint 27 is provided at one end of the machine head facing the combustion chamber, which is used to engage with the hole of the in-place charge 5 and can be firmly fixed to the charge 5, thereby driving the charge 5 to move. As a specific embodiment, Figure 6 As shown, the joint can adopt an external thread pagoda joint, which is used as a pneumatic quick joint and connected to a hose. Because the medicine column will deform when squeezed, this characteristic of the medicine column can be used to clamp the medicine column and drive it to move.

[0049] It can also be seen from Figure 5 and Figure 7 that two locking pieces 15 are provided in the nose 16. The locking pieces 15 are located on both sides of the nose 16. The locking pieces can move between the deployed position and the retracted position. In the retracted position, the outer contour of the locking piece does not exceed the circumferential outer contour of the nose 16. This enables the nose 16 to move in the channel within the housing. In the deployed position, the two locking pieces are opened by the action of the conical surface of the head of the nose push rod 17. Correspondingly, a structure adapted to the shape of the deployed locking piece is provided at the corresponding position of the housing, such as Figure 7 shown. In Figure 7 , the two locking pieces 15 are in the retracted position. At this time, if the nose push rod 17 moves to the left, the conical head of the nose push rod 17 begins to push the two locking pieces 15 to open, and a shape matching the shape of the two deployed locking pieces 15 is provided on the first housing 9. Due to shape interference, the housing provides a force to prevent the locking piece and thus the nose from being further pushed by the mechanism push rod. Therefore, the nose cannot move further.

[0050] As a feasible working process, when the nose push rod 17 starts to move from the rightmost side, at first, since the two locking pieces are restricted by the inner wall of the housing and cannot be opened, the conical head of the nose push rod 17 can push the nose to move to the left by pushing the locking piece. As it moves to Figure 7 the state shown, the two locking pieces gradually open. During the opening process of the locking pieces, the nose does not move. At this time, the cross bar moves to the left side of the strip groove, and the locking pieces are fully opened. In this state, the nose 16 reaches a stable fixed state. Without the nose push rod 17 moving, the nose 16 also no longer moves.

[0051] On the one hand, the locking piece is rotatably connected to the nose at one end, enabling it to be deployed or retracted. On the other hand, the locking piece can be connected to the nose through an elastic reset member, making it always tend to retract. In the absence of the acting force of the nose push rod, the locking piece is in the retracted state.

[0052] When the nose push rod moves to the right, it will first drive the cross bar to move in the groove of the nose 16. At this time, the nose does not move. At the same time, the two locking pieces begin to close under the action of the elastic reset member. Then the cross bar contacts the right side of the groove of the nose 16. At this time, the outer shape of the locking piece no longer interferes with the housing. Therefore, the nose push rod 17 can drive the nose 16 to move to the right.

[0053] The propellant push rod 6 is fixedly connected to the nose 16, so it can also reciprocate under the action of the nose 16.

[0054] Furthermore, as Figure 6As shown, a push rod inclined surface is provided on the side of the nose push rod 17 opposite to the nose 16, and a corresponding nose inclined surface is provided inside the nose 16. Through the cooperation of the two inclined surfaces, the locking can be made more reliable. After locking, the push rod inclined surface of the nose push rod 17 abuts against the nose inclined surface to ensure that the nose 16 will not move any more.

[0055] As can be seen in Figures 3 to 6 , protrusions are respectively provided at the front and rear parts below the nose 16, namely the shorter front protrusion below the nose and the longer rear protrusion below the nose. In addition, the height of the front protrusion below the nose is greater than that of the rear protrusion below the nose. Combining Figures 2 to 6 , it can be known that the rear protrusion below the nose can be engaged with the vertically movable slider 21 during movement, and the slider 21 has a guiding inclined surface. Thus, when the rear protrusion below the nose moves to the right, the slider 21 moves downward through this guiding inclined surface. The slider 21 is provided with a spring member inside, for example, so that it is always subjected to an upward acting force of the spring member. The slider 21 is provided with a stepped portion on one side, and the lever 23 has a first part and a second part located on one side of the rotating shaft. The first part and the second part are generally in a "Y" shape. In addition, a third part is provided on the other side of the rotating shaft. The first part can contact the front protrusion below the nose, and the second part can be used to contact the stepped portion and be stopped and limited as shown in Figure 4 .

[0056] In Figure 2 and Figure 3 In the state shown, during the process of the front protrusion below the nose moving to the right, it will contact the first part of the lever 23, that is, Figure 2 and Figure 3 The angular part that contacts the rear protrusion below the nose in the current state shown in Figure 4 shows the state where the front protrusion below the nose contacts the first part. At this time, the lever 23 has been rotated. The front protrusion below the nose presses down the lever 23, thereby causing the lever 23 to rotate, and then the medicine column transfer part 24 connected to the lever 23 can be moved upward. Specifically, as shown in Figure 2 and Figure 3As shown, at one end of the lever 23 close to the cartridge, a propellant transfer part 24 is connected, and the propellant transfer part 24 can move up and down. Although the lever 23 makes a rotational motion, by means of the slider provided at the end of the lever 23 and the guide rail in which the slider moves, the propellant transfer part 24 can only move up and down. When in the lower position, the head push rod 17 can move to the right and drive the propellant push rod 6 to move to the right, so as to push the propellant in the cartridge into the propellant transfer part 24. And when the propellant transfer part 24 moves upward with the movement of the lever 23, the head push rod 17 moves to the left again, and the propellant in the propellant transfer part 24 can be pushed into the combustion chamber by the pushing action of the head.

[0057] In addition, in combination with Figure 2 and Figure 3 , a clamping part is also provided in the propellant transfer part 24. Specifically, the clamping part may include clip pieces 25 and a holding spring 26. When the propellant 5 contacts the clip pieces 25, the clip pieces 25 rotate to both sides to allow the propellant to pass through. At the same time, under the action of the holding spring 26, such as a torsion spring, the propellant will be clamped, so that the propellant will not be displaced when moving with the propellant.

[0058] As an optional implementation manner of the present invention, as Figure 1 , Figure 11 shown, a misfired propellant collection mechanism is also provided. This is because there may be various reasons for the propellant not to burn or not burn sufficiently in the combustion chamber. Therefore, it is necessary to discharge the misfired propellant in the combustion chamber from the combustion chamber. For this purpose, the misfired propellant collection mechanism includes a misfired propellant cartridge 12, which is fixed on the first housing 9 and is located above the propellant transfer part 24. The misfired propellant cartridge 12 is internally provided with a misfired propellant baffle 10 and a first spring 11. A second spring 13 is provided above the misfired propellant cartridge 12 to limit the position of the misfired propellant cartridge 12.

[0059] Figure 11 shows a schematic diagram of the misfired propellant collection mechanism of the pulse loading type power device of the present invention. As Figure 10 shown, a linear abutting protrusion 29 is provided on the side wall of the misfired propellant cartridge 12, which can be connected to the motion conversion mechanism. Specifically, Figure 3 the yellow part abutting against the mechanism in Figure 5The flattened portion located between the two cylinders above the middle locking piece 15, on the other hand, cooperates with the abutting protrusion 29 through the protruding portion. Therefore, when the ignition is completed and the machine head 16 moves to the right, if the powder column is not completely burned, the machine head 16 will drive the powder column to move. As the machine head 16 moves, the machine head 16 starts to drive the motion conversion mechanism to move, and the protrusion on the motion conversion mechanism contacts the abutting protrusion 29 and drives the blind powder column cartridge downward as it moves to the right, and at the same time, the blind powder column gradually enters the blind powder column cartridge 12.

[0060] The blind powder column magazine 12 is provided with a blind powder column catch 28 and a torsion spring 30 at its lower part. After the blind powder column enters the blind powder column magazine 12, the blind powder column catch 28 and the torsion spring 30 will ensure that the powder column will not fall out of the blind powder column magazine 12.

[0061] After the dynamic motion conversion mechanism loses contact with the blind powder column magazine, the machine head continues to move backward with the dynamic motion conversion mechanism until it moves into place. When the machine head returns, it will also move forward with the dynamic motion conversion mechanism. At this time, the blind powder column has risen a certain distance under the action of the powder column limit. The dynamic motion conversion mechanism will first contact and act on the bottom of the protrusion on the blind powder magazine to make the blind powder column magazine continue to rise. When the opposite-sex slider moves to the front of the protrusion and does not contact the protrusion, the spring will press the blind powder magazine down a certain distance. Because the opposite-sex slider is not in contact with the protrusion and is in front of the protrusion at this time, the next discharge of medicine begins (the slider does not contact the protrusion for a period of time before and after the blind powder magazine). The blind powder magazine will move downward a short distance under the action of the compression spring above it, so that the dynamic motion conversion mechanism can contact the top of the protrusion when it moves next time, causing the blind powder magazine to drop.

[0062] The working process of the pulse loading power device of the present invention is described below.

[0063] The medicine column 5 is pushed to the top of the medicine box 1 by the baffle 3. At this time, the electric cylinder 20 drives the head push rod 17 away from the combustion chamber, that is, toward Figure 1 and Figure 2The rightward movement in [description] is because the movement of the nose push rod 17 causes the locking piece 15 to unlock. After unlocking, the push rod 17 continues to move and drives the nose 16 to move in the same direction. At the same time, because the nose 16 is connected to the propellant push rod 6, the propellant push rod 6 will also move along with the nose 16. When the propellant push rod 6 moves, it will push the propellant 5 out of the cartridge 1 along the same direction, so that the propellant 5 moves onto the propellant transfer part 24. After that, the nose push rod 17 continues to drive the nose 16 to move along this direction. If there is a misfire collection mechanism, the nose 16 drives the motion conversion mechanism above the nose to move. The motion conversion mechanism drives the misfire cartridge 12 to move downward in a direction perpendicular to the moving direction of the nose 16. At this time, if there is a misfire in the combustion chamber 8, the misfire will be pulled out of the combustion chamber 8 by the joint 27 at the front end of the nose. When the misfire cartridge 12 moves downward, the misfire just enters the misfire cartridge 12. After that, the misfire cartridge 12 resets under the action of the second spring 13 above it. The nose continues to move in the same direction. The front protrusion below the nose 16 will contact the first part of the lever and drive the lever 23 to rotate. The rotation of the lever 23 drives the propellant transfer part 24 to move in a direction perpendicular to the moving direction of the nose 16, and moves the propellant 5 to the same axis position as the combustion chamber 8. At this time, due to the pressing of the nose 16, the second part of the lever 23 presses the slider 21 downward, and then the second part reaches Figure 4 the state shown, that is, the slider 21 abuts against the lever 23, specifically against the second part of the lever 23, so that the lever 23 cannot rotate to ensure the stability of the propellant transfer part 24 during propellant supply. At this time, the rightward movement of the nose 16 reaches the maximum position.

[0064] When the electric cylinder 20 drives the nose push rod 17 in the reverse direction, the nose push rod 17 drives the nose 16 to move in the direction close to the combustion chamber 8. During the movement, when the rear protrusion below the nose 16 touches the slider 21 behind the lever 23, the slider 21 is pressed down a certain distance. Thus, the slider 21 releases the restriction on the rotation of the lever 23. At the same time, the front protrusion at the front end below the nose 16 touches the third part of the lever 23, and the lever 23 resets. Since there is no slider 21 against the rear of the lever 23 at this time, the lever 23 can rotate. At the same time, the nose 16 pushes the propellant 5 on the propellant limiter 24 into the combustion chamber 8. The nose 16 drives the propellant push rod 17 to move. At this time, the propellant push rod 6 presses the second propellant 5 in the cartridge 1 until the baffle on the propellant push rod 6 passes above the cartridge 1, and the second propellant 5 can be pushed to the top of the cartridge 1 by the spring 2 in the cartridge 1. When the front end of the nose 16 touches the combustion chamber 8, the nose push rod 17 continues to move in the same direction. During the movement, it will contact the two locking pieces 15 on the side of the nose 16, causing the locking pieces 15 to open to achieve locking. The inclined surface in front of the nose push rod 17 contacts the inclined surface on the nose 16 to ensure more reliable locking. Each mechanism returns to the initial position under the drive of the electric cylinder 20 to complete one cycle.

[0065] The foregoing describes only exemplary embodiments of the spirit and principles of the present invention. Those skilled in the art will appreciate that various changes can be made to the described examples without departing from the spirit and principles, and these changes and their various equivalent ways are all contemplated by the inventors and fall within the scope defined by the claims of the present invention.

Claims

1. A pulse loading type power device, characterized in that, Comprising: A housing; A combustion mechanism, the combustion mechanism including a combustion chamber, a nozzle, an ignition device, and a nose. The combustion chamber and the nozzle are fixed to a fixed member; A propellant storage device, in which a plurality of propellant grains are stored; A power source capable of providing reciprocating motion; A propellant feeding mechanism, which can, under the action of the reciprocating motion of the power source, move one propellant grain in the propellant storage device into the combustion chamber during one reciprocating motion.

2. The pulsed loading type power device according to claim 1, characterized in that The propellant feeding mechanism includes a nose push rod, a nose, a lever, a propellant grain transfer part, and a propellant grain push rod. The propellant grain push rod can move along a direction parallel to the moving direction of the nose to push the propellant grain to the propellant grain transfer part. The lever can rotate at a certain angle. The propellant grain transfer part is fixed at one end of the lever. When the lever rotates, the propellant grain limit can move along a direction perpendicular to the moving direction of the nose.

3. The pulsed loading type power device according to claim 2, characterized in that A slider is provided at the rear end of the propellant feeding lever. The slider can move along a direction perpendicular to the reciprocating motion direction. A spring is placed below the slider; The nose includes a short front protrusion below the nose and a long rear protrusion below the nose.

4. The pulsed loading type power device according to claim 2, characterized in that A locking mechanism is further provided on the nose, including two locking pieces. The locking pieces are located on both sides of the nose. The locking pieces are opened under the action of the nose push rod and cooperate with the grooves on the inner wall of the housing for locking.

5. The pulsed loading type power device according to claim 4, characterized in that The front end of the nose push rod is provided with an inclined surface, which contacts the inclined surface at the rear end of the nose during locking.

6. The pulsed loading type power device according to claim 2, characterized in that The front end of the nose has a connector, and the connector can fix the propellant grain at the front end of the nose through the middle hole of the propellant grain.

7. The pulsed loading type power device according to any one of claims 1-6, characterized in that The propellant grain is a hollow propellant grain, and a secondary coil and ignition powder are provided at the front end of the propellant grain.

8. The pulsed loading type power device according to claim 7, characterized in that The secondary coil generates an induced current through the primary coil, and the ignition powder ignites the propellant grain through the induced current.

9. The pulsed loading type power device according to any one of claims 1-6, characterized in that The propellant storage device has a magazine, and the magazine includes a storage part and a propellant discharging part. A spring and a baffle are provided in the storage part.

10. A method for operating the pulsed loading type power device according to any one of claims 1-9, characterized in that Operate the power source to make the power source provide reciprocating motion; The propellant feeding mechanism reciprocates under the action of the power source and transports one propellant grain in the propellant storage device into the combustion chamber during one reciprocating motion; Repeat this action to achieve multi-pulse ignition.

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