A teaching aid based on water rocket boost glider

Abstract

The application relates to a teaching aid based on a water rocket-assisted glider, which comprises a water rocket body, a glider, an umbrella opening device, a connecting and separating device and a recovery device. The umbrella opening device is arranged on an umbrella bin and comprises a bin door remote control switch, a parachute and a parachute ejection device arranged in the bin. When the bin door is opened, the parachute ejection mechanism ejects the parachute out of the bin. The connecting and separating device is arranged on the outer surface of the water rocket body and comprises a glider ejection mechanism and a glider fixing mechanism, and the glider fixing mechanism is provided with a fixing mechanism remote control switch. When the fixing mechanism is closed, the glider ejection mechanism and the glider fixing mechanism jointly fix the glider on the water rocket, and when the fixing mechanism is opened, the glider ejection mechanism separates the glider from the water rocket body through elastic force. The application realizes remote control glider ejection and umbrella opening, can improve the opening success rate of the parachute, and more truly simulates the process of space shuttle launching and rocket recovery.

Description

Technical Field

[0001] This application relates to the field of teaching aids technology, and in particular to a teaching aid based on a water rocket-assisted glider. Background Technology

[0002] Water rockets, also known as pneumatic water-jet rockets or water-propelled rockets, are devices designed using mass ratio and air pressure. Water rocket-assisted gliders utilize these water rockets as boosters to propel the aircraft to high altitudes. This device, to some extent, simulates the launch of a space shuttle and is a classic teaching practice project in aerospace engineering programs at universities. It greatly encourages students to conduct practical exercises based on theoretical learning, fully stimulating their innovative abilities. Simultaneously, this device can also be used as a demonstration prop in science popularization activities, making related activities more engaging and rewarding.

[0003] Water rocket-assisted glider technology mainly consists of four aspects: rocket body connection technology, parachute deployment technology, separation technology, and recovery technology. Currently, most water rocket models on the market are simple models designed for elementary and middle school students. These primarily involve rocket body connection and parachute deployment technologies, mainly utilizing the parachute's own gravity or uncontrolled mechanical springs for deployment, resulting in relatively low safety and reliability. In addition, there is a type of water rocket-assisted glider that integrates the water rocket and glider into one unit. This design allows the water rocket and glider to remain connected, resulting in a more compact structure. However, it is generally small in size, has a low flight altitude, and limited practical application. Summary of the Invention

[0004] Therefore, it is necessary to provide a teaching tool based on a water rocket-assisted glider that can more realistically simulate the space shuttle launch process, addressing the aforementioned technical problems.

[0005] A teaching aid based on a water rocket-assisted glider includes a water rocket body, a glider, a parachute deployment device, a connection and separation device, and a recovery device.

[0006] The parachute deployment device is located on the parachute compartment and includes a remote control switch for the compartment door, a parachute, and a parachute ejection mechanism located inside the compartment. When the compartment door is closed, the parachute is installed between the parachute ejection mechanism and the compartment door. The parachute ejection mechanism uses elasticity to press the parachute tightly against the inside of the compartment door. When the compartment door is opened, the parachute ejection mechanism ejects the parachute out of the compartment.

[0007] The connection and separation device is located on the outer surface of the water rocket body, including a glider ejection mechanism and a glider fixing mechanism. The glider fixing mechanism is equipped with a remote control switch. When the fixing mechanism is closed, the glider ejection mechanism and the glider fixing mechanism work together to fix the glider to the outer surface of the water rocket body. When the fixing mechanism is opened, the glider ejection mechanism uses elastic force to separate the glider from the water rocket body.

[0008] Specifically, the parachute compartment door can be opened via remote control, ejecting the parachute and increasing the success rate of parachute deployment. The glider's securing mechanism can also be opened via remote control, allowing the glider to detach from the water rocket's surface. These two remote control processes can more realistically simulate the space shuttle launch and rocket recovery process.

[0009] In one embodiment, the rocket also includes three or more propellers that are vertically mounted at equal intervals around the outer surface of the rocket body, and the rotational speed of each propeller is individually controlled.

[0010] During the ascent of the water rocket, because the propellers are installed perpendicular to the rocket body (i.e., the propeller shafts are perpendicular to the rocket body), the impact on the rocket's shape is minimized, thus reducing launch drag. During the descent of the water rocket, the rotational speed of each propeller can be adjusted individually via remote control or a preset program to provide a lateral thrust perpendicular to the rocket body, controlling the descent position of the water rocket.

[0011] In one embodiment, the remote control switch for the canopy door includes a first remote control servo and a first elastic component. The first remote control servo is fixed to the outer surface of the canopy. A first connecting end of the first elastic component is fixedly connected to the canopy, and a second connecting end is movably connected to the first remote control servo. The elastic force of the first elastic component keeps the canopy door in a closed state. The first remote control servo operates according to a remote control command, disconnecting the second connecting end from the first remote control servo and opening the canopy door.

[0012] Specifically, the remote control of the hatch door is achieved by using elastic components fixed to the surface of the water rocket body and a remote control servo motor, which has the advantages of simple implementation, light weight, and low cost.

[0013] In one embodiment, the glider fixing mechanism includes a second remote control servo and a second elastic component. The second remote control servo is fixed to the outer surface of the water rocket body. The first connecting end of the second elastic component is fixedly connected to the water rocket, and the second connecting end is movably connected to the second remote control servo. The elastic force of the second elastic component keeps the fixing mechanism in a closed state. The second remote control servo operates according to a remote control command, disconnecting the second connecting end and the second remote control servo, thus opening the fixing mechanism.

[0014] Specifically, the glider fixing mechanism is achieved by using elastic components fixed to the surface of the water rocket body and remote control servo motors, which has the advantages of simple implementation, light weight, and low cost.

[0015] In one embodiment, the water rocket's volume is greater than 5L. A larger volume allows the water rocket to ascend to greater heights, providing more space for glider ejection, parachute deployment, and water rocket recovery, thus improving the success rate and effectiveness of demonstrations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a teaching tool based on a water rocket-assisted glider in one embodiment;

[0017] Figure 2 This is a schematic diagram of the umbrella compartment in one embodiment;

[0018] Figure 3 This is a schematic diagram of a teaching aid based on a water rocket-assisted glider in another embodiment;

[0019] Figure 4 This is a schematic diagram of the operation process of a teaching tool based on a water rocket-assisted glider in another embodiment. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] In one embodiment, a teaching aid based on a water rocket-assisted glider is provided, including a water rocket body, a glider, a parachute deployment device, a connection and separation device, and a recovery device.

[0022] Water rocket body structure as follows Figure 1 As shown, the parachute compartment 101 is located at the head of the water rocket body. The parachute deployment device includes a parachute and a parachute ejection device located inside the parachute compartment. The parachute compartment is equipped with a compartment door 102, and the compartment door 102 is equipped with a remote control switch. In this embodiment, the remote control switch for the compartment door is implemented using a remote control servo motor 103 and a rubber band, and the parachute ejection device is also implemented using a rubber band. The remote control servo motor 103 receives remote control signals through a signal receiving device 104. Specifically, as shown... Figure 2As shown, a door 201, approximately 10cm in length and width, is opened in the parachute compartment. Inside the parachute compartment, a launch surface is created using two cross-shaped rubber bands 202. The two parachutes are folded and placed side-by-side on the launch surface inside the parachute compartment. A rubber band is wrapped around the outside of the door 201 to close the door, simultaneously pressing the parachutes firmly against the launch surface formed by the two rubber bands. One end of the rubber band on the door is connected to a servo motor 103 fixed to the parachute compartment, using the servo motor to hold the rubber band in place. The other end is fixed to the hull of the water rocket, ensuring the parachutes are always compressed.

[0023] The connection and separation device is located on the outer surface of the water rocket body, including a glider ejection mechanism and a glider fixing mechanism. The glider fixing mechanism is equipped with a remote control switch. When the fixing mechanism is closed, the glider ejection mechanism and the glider fixing mechanism work together to fix the glider to the outer surface of the water rocket body. When the fixing mechanism is opened, the glider ejection mechanism uses elastic force to separate the glider from the water rocket body.

[0024] In this embodiment, the glider fixing mechanism includes left and right nose slots 105 for the glider and a glider suspension frame 106, which together hold the glider in place on the surface of the water rocket body. The glider ejection mechanism is implemented using rubber bands and a remote control servo. A rubber band 107 is used to pass horizontally through and be fixed in the middle of the left and right nose slots. When the glider nose is placed in the middle of the left and right nose slots, the rubber band 107 deforms, providing ejection force for the glider. Simultaneously, another rubber band is used to horizontally wrap around and bind the glider nose, ensuring the glider nose is tightly attached to the water rocket body. One end of the rubber band used to fix the glider is fixed to the surface of the water rocket body, and the other end is fixed to the remote control servo 108, which also receives remote control signals through a signal receiving device 104.

[0025] When in use, when the water rocket carrying the glider reaches its highest point, the remote control is used to control the servo motor 103 to rotate, which causes the rubber band to be released from the servo motor 103, thus releasing the canopy door 201. The parachute is then launched by the ejection surface inside the canopy, which is composed of cross-shaped rubber bands 202, to achieve parachute opening.

[0026] When in use, when the water rocket carrying the glider reaches its highest point, the remote control is used to control the servo motor 108 to rotate, thereby releasing the rubber band used to fix it from the servo motor. This allows the glider to be ejected outward by the thrust of the rubber band 107 passing between the left and right slots, thus achieving the ejection separation of the water rocket and the glider.

[0027] This embodiment provides a teaching aid based on a water rocket-assisted glider. It is simple to implement and low in cost. The parachute compartment door can be opened via a remote control, ejecting the parachute and increasing the success rate of parachute deployment. The glider's securing mechanism can also be opened via the remote control, allowing the glider to detach from the water rocket's surface. These two remote control processes can more realistically simulate the space shuttle launch and rocket recovery process.

[0028] In one embodiment, three or more propellers are vertically installed at equal intervals on the outer surface of the water rocket, and the rotational speed of each propeller can be controlled individually.

[0029] During the ascent of the water rocket, because the propellers are installed perpendicular to the rocket body (i.e., the propeller shafts are perpendicular to the rocket body), the impact on the rocket's shape is minimized, thus reducing launch drag. During the descent of the water rocket, the rotational speed of each propeller can be adjusted individually via remote control or a preset program to provide a lateral thrust perpendicular to the rocket body, controlling the descent position of the water rocket.

[0030] Specifically, such as Figure 3 As shown, in this embodiment, four propellers 301 are vertically and symmetrically installed in the lower part of the water rocket, a short distance from the tail fin, serving as a positioning and recovery device for the water rocket. Vertical installation means that the propeller shafts are installed perpendicular to the central axis of the water rocket body. Vertical installation minimizes the impact of the positioning and recovery device on the aerodynamic shape of the water rocket during its ascent, reducing drag during launch. The four symmetrical propellers balance the forces acting on the water rocket, increasing its attitude stability during launch.

[0031] The usage procedure of the teaching aids provided in this embodiment is as follows: Figure 4 As shown in the diagram. First, the glider is fixed to the hull of the water rocket. When it reaches the designated altitude, the water rocket and glider separate via remote control. After separation, the parachute of the water rocket is remotely deployed, and a fixed-point recovery device consisting of propellers is controlled to recover the water rocket at a designated location. The glider can also be remotely controlled for fixed-point recovery. In practice, after the water rocket separates from the glider and the parachute of the water rocket deploys, the rotational speed of the four propellers is adjusted via ground remote control or program control. Based on the relative position between the water rocket and the designated location, the overall thrust generated by the four propellers on the water rocket is adjusted, thereby adjusting the flight attitude of the water rocket after separation. Under the action of the parachute, the descent trajectory of the water rocket is changed, thus achieving fixed-point recovery.

[0032] In one embodiment, the water rocket's volume is greater than 5L. A larger volume allows the water rocket to ascend to greater heights, providing more space for glider ejection, parachute deployment, and water rocket recovery, thus improving the success rate and effectiveness of demonstrations.

[0033] Specifically, in this embodiment, the water rocket body is made from three 2L beverage bottles, connected mouth-to-bottom using hollow nuts and bolts at both ends, and sealed with gaskets; the parachute compartment is made from half a cola bottle. This manufacturing method features lightweight and readily available materials. According to experiments, the water rocket in this embodiment can reach a flight altitude of 20 to 40 meters, providing ample space for ejection and parachute deployment.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A teaching aid based on a water rocket-assisted glider, characterized in that, The teaching aids include a water rocket body, a glider, a parachute deployment device, a connection and separation device, and a recovery device. The parachute deployment device is mounted on the parachute compartment and includes a compartment door remote control switch, a parachute, and a parachute ejection mechanism located inside the compartment. When the compartment door is closed, the parachute is installed between the parachute ejection mechanism and the compartment door. The parachute ejection mechanism uses elasticity to press the parachute tightly against the inside of the compartment door. When the compartment door is opened, the parachute ejection mechanism ejects the parachute out of the compartment. The parachute compartment is located at the head of the water rocket body. The remote control switch for the hatch door includes a first remote control servo and a first elastic component. The first remote control servo is fixed to the outer surface of the hatch. The first connecting end of the first elastic component is fixedly connected to the hatch, and the second connecting end of the first elastic component is movably connected to the first remote control servo. The elastic force of the first elastic component keeps the hatch door in a closed state. The first remote control servo operates according to a remote control command, disconnecting the second connecting end of the first elastic component from the first remote control servo, thus opening the hatch door. The connection and separation device is disposed on the outer surface of the water rocket body, including a glider ejection mechanism and a glider fixing mechanism. The glider fixing mechanism is equipped with a fixing mechanism remote control switch. When the glider fixing mechanism is closed, the glider ejection mechanism and the glider fixing mechanism work together to fix the glider to the outer surface of the water rocket body. When the glider fixing mechanism is opened, the glider ejection mechanism uses elastic force to separate the glider from the water rocket body. The glider fixing mechanism includes a second remote control servo and a second elastic component. The second remote control servo is fixed to the outer surface of the water rocket body. The first connecting end of the second elastic component is fixedly connected to the water rocket, and the second connecting end is movably connected to the second remote control servo. The elastic force of the second elastic component keeps the glider fixing mechanism in a closed state. The second remote control servo operates according to a remote control command, disconnecting the connection between the second connecting end and the second remote control servo, thus opening the glider fixing mechanism. The second elastic component is a second rubber band. The glider securing mechanism includes left and right slots at the glider's nose and a glider suspension frame, which together secure the glider to the surface of the water rocket body. The glider ejection mechanism is implemented using a first rubber band and a second remote control servo. The first rubber band runs horizontally through and is fixed in the middle of the left and right slots. When the glider's head is placed in the middle of the left and right slots, the first rubber band deforms, providing the glider with ejection force. At the same time, the glider fixing mechanism uses another second rubber band to wrap around and bind the glider's head horizontally, so that the glider's head is in close contact with the water rocket body. One end of the second rubber band used to fix the glider is fixed to the surface of the water rocket body, and the other end is fixed to the second remote control servo. The second remote control servo also receives remote control signals through a signal receiving device. Four propellers are vertically and symmetrically installed in the lower part of the water rocket, a short distance from the tail fin. These propellers serve as a fixed-point recovery device for the water rocket. The vertical installation means that the axis of the propeller is installed perpendicular to the central axis of the water rocket body. This vertical installation can minimize the changes in the aerodynamic shape of the water rocket during its ascent, reduce drag during launch, and the four symmetrical propellers can balance the forces on the water rocket, increasing the stability of the water rocket's attitude during launch.

2. The teaching aid according to claim 1, characterized in that, The rotational speed of each propeller is controlled individually.

3. The teaching aid according to claim 1, characterized in that, The volume of the water rocket body is greater than 5L.

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