KR200281717Y1 - A rocket model apparatus by explosion of hydrogen - Google Patents

Abstract

The present invention relates to a rocket model device that is a scientific educational or scientific toy that is simply launched by using the basic principles of science, the device of the present invention is a rocket projectile (10) and the piston 11 is fixed to the inside The launch pad 20 includes a cylinder 22 coupled to the piston 11 to support the rocket launch vehicle 10 and generates hydrogen and oxygen through electrolysis of water to generate the inside of the cylinder 22. An electrolysis device 30 to be supplied is provided, and an ignition device 40 which discharges sparks in the cylinder 22 to cause the rocket launcher 10 to be fired by the explosive force of hydrogen.

The device of the present invention can obtain accurate execution result through safer launching and simple operation of the rocket model. In addition, the present invention can learn that hydrogen and oxygen are generated during the electrolysis of water.

Description

A rocket model apparatus by explosion of hydrogen}

The present invention relates to a rocket model device, and more particularly, to a device for launching the rocket model with the explosive power of hydrogen using hydrogen generated during the electrolysis of water as a fuel.

Conventional rocket modeling apparatuses include water rockets using water and air and small (powder) rockets using gunpowder. The principle of a general rocket model is the same as that of a rocket that launches into space. Such a method is to launch a satellite rocket or spacecraft using the propulsion generated by burning the gas or gas.

In constructing the water rocket, the body of the water rocket generally uses a PET bottle (mainly referred to as "carbonated beverage container"), which is a light and hard material. In this way, in order to experiment with the water rocket constituting the body with a PET bottle, after injecting water into the PET bottle, the air is blown into the PET bottle using an air pump. Then, the air present inside the PET bottle is compressed to exert pressure on the inner wall of the PET bottle and the water surface. This pressure acts as a force to push the water down. In this state, the cap of the PET bottle is opened. Then, the pressure acting in the PET bottle acts toward the cap in an instant. Under this pressure, water is ejected from the PET bottle of the rocket model and the rocket model is fired. The basic principle of this water rocket is based on Newton's third law, the law of action and reaction. By this principle, the rocket is launched in the opposite direction from which water is sprayed.

When launching a water rocket, if you add too little water, the water jet will be small and the rocket will not fly far. If too much water is added, the weight of the PET bottle containing water becomes too heavy and the amount of compressed air is small. As a result, the pressure to push the water decreases, causing the rocket model to fall shortly after flying. As a result, the water rocket does not produce good results even with a little water. Depending on the weight and shape of the water rocket, the amount of water added is adjusted, but it is generally most preferable to add water to about one third of the volume inside the PET bottle.

However, if there is no launch pad in such a water rocket, one person should hold the spout and the stopper of the water rocket and the other person should inject air into the air pump. In addition, even when launching, a person should open the cap of the injection hole directly. As a result, the person holding the water rocket may get wet with the sprayed water, and the person may manually operate the air pump to pressurize the air and adjust the firing angle arbitrarily, resulting in inaccurate performance. In addition, when there is a launch pad of the water rocket, the launch pad holds the water rocket so as not to be fired while pressurizing the air, and there is no inconvenience that a person must execute directly because the cap of the nozzle is opened by the launch handle. However, the water rocket has a disadvantage that it does not fly far because it is launched by the injection force is injected only by the force of compressed air.

In addition, a small (powder) rocket, which is often used as a science education material, is fired by burning fuel in a combustion chamber inside a rocket model to inject a gas of high temperature and pressure generated at this time. In general, gunpowder is used as fuel in small rockets. These small rockets are similar to the launching principle of water rockets, except that they are fired by the explosive power of gunpowder.

However, since small rockets use gunpowder, there is always a safety hazard such as an explosion of gunpowder unless a separate safety device is provided.

Therefore, the present invention is provided to solve the problems of the prior art as described above, unlike the water rocket or small (powder) rocket by using the explosiveness of hydrogen generated during the electrolysis of water with the propulsion force of the rocket model, The purpose of the present invention is to provide a rocket model device capable of obtaining accurate execution results through safe launching and simple operation of a rocket model.

In addition, the present invention has an object to provide a rocket model device that can learn that hydrogen and oxygen are generated during the electrolysis of water.

1 is a perspective view schematically showing the components of the rocket model using the explosive power of hydrogen according to an embodiment of the present invention,

2 is a partial perspective view showing the inside of the rocket launch vehicle that is part of the rocket model shown in FIG.

FIG. 3 is a perspective view illustrating a launch pad for supporting the rocket launch vehicle shown in FIG. 1 and an ignition device for generating a flame discharge in the rocket launch vehicle.

4 is a partial perspective view showing the inside of the electrolysis device for generating hydrogen and oxygen shown in FIG.

FIG. 5 is an operational state diagram illustrating a state in which the parachute operates when the rocket launch vehicle shown in FIG. 2 is dropped in flight.

♠ Explanation of symbols on the main parts of the drawing ♠

10: rocket launch vehicle 11: piston

12: wing 13: rocket launch vehicle cap

14: rubber ring 15: hinge

16: parachute 17: body

20: launch pad 21: spring

22 cylinder 23 upper launch support

24: lower launch support 25: butterfly nut

26 hose 27 cock valve

28: fixed base 29: connector

30: electrolysis device 31: power transformer

32: electrode 33: switch

34: Hughes 35: Diaphragm

36 case 37 gas inlet

40: ignition device 41: button

42: wire 43: piezoelectric

44: fireball

The rocket model device of the present invention for achieving the object as described above, a launch pad including a rocket projectile having a piston fixed therein, a cylinder supporting the rocket projectile, and a cylinder coupled to the piston, and water An electrolysis device for supplying hydrogen and oxygen generated by electrolysis into the cylinder, and an ignition device to discharge the flame within the cylinder to the rocket projectile is launched by the explosion force of hydrogen.

And, the parachute is fixed to the upper end of the rocket launch body of the present invention, it is preferable that the cap that can be opened and closed while covering the parachute.

In the following, with reference to the accompanying drawings a preferred embodiment of the rocket model using the explosive power of hydrogen according to the present invention will be described in detail.

1 is a perspective view schematically showing the components of the rocket model using the explosive power of hydrogen according to an embodiment of the present invention, Figure 2 is a partially perspective perspective view showing the inside of the rocket projectile as part of the rocket model.

As shown in Figures 1 and 2, the rocket launcher 10 is composed of a cylindrical body 17, one PET bottle is fixed inside the body 17 is inserted. The piston 11 is fixed in the PET bottle. That is, the piston 11 and the body are made integral. In addition, a rubber ring 14 is inserted into the outer circumference of the piston 11 to generate and supply the electrolysis device 30 and seal the hydrogen and oxygen collected in the PET bottle so as not to leak. The rocket projectile cap 13 (hereinafter, referred to as a 'cap') is positioned at an upper portion of the rocket launch vehicle 10. At this time, the cap 13 is fixed to the hinge to enable the opening and closing of the body 17. In addition, the cap 13 has a parachute 16 that helps the rocket launch vehicle 10 to safely land during the drop flight. In addition, four trapezoidal wings 12 are provided at the lower end portions of the rocket launch vehicle 10 at 90 ° angles. The wing 12 serves to improve the direction progression of the rocket launch vehicle 10 during the air flight.

3 is a perspective view illustrating a launch pad for supporting a rocket launch vehicle and an ignition device for generating a flame discharge in the rocket launch vehicle.

As shown in Figures 1 and 3, the launch pad 20 includes a cylinder 22 in the form of a cylindrical pipe located above the upper launch support 23. Inside the cylinder 22, a gas injection port 37 into which hydrogen and oxygen generated by electrolysis of water are injected, and an ignition hole 44 causing spark discharge through the ignition device 40, respectively. In addition, the upper launching support 23 is positioned to contact the cylinder 22, the hole corresponding to the gas inlet 37 and the ignition port 44 formed in the cylinder 22 is formed. The upper launch support 23 is coupled to a plurality of rods to enable the vertical movement with respect to the lower launch support 24 located below. Springs 21 are provided around the rods, respectively. The spring 21 absorbs the shock generated during the launch of the rocket launch vehicle 10 to prevent damage to the launch pad.

In addition, a side plate is formed in the vertical lower side of the lower launch support 24, the side plate is fastened with the fixing support 28 in a bolt / nut fastening method. At this time, it is preferable to use a butterfly nut 25 which can be easily tightened or loosened. In addition, the fixed support 28 is in contact with the bottom surface serves to support the launch pad 20. Therefore, if the launcher 20 is loosened by loosening the butterfly nut 25, the launcher 20 can be turned around the bolt. If the launch pad 20 can be turned in this way, the rocket launch vehicle 10 can also be linked to adjust the launch angle.

The ignition device 40 is connected to the ignition hole 44 inside the cylinder 22 by an electric wire 42. In the ignition device 40 of the present invention, when the button 41 is pressed from the outside, the mechanical pressure is changed to an electrical property in the piezoelectric force 43 to supply electricity along the wire 42 to generate spark discharge at the ignition hole 44. Configured to produce.

4 is a partially transparent perspective view showing the inside of an electrolysis device that generates hydrogen and oxygen.

As shown in FIG. 4, the electrolysis device 30 is provided with a switch 33 for manipulating the flow and blocking of the current (ON / OFF), and a fuse 34 for blocking the oversupply of the current. In addition, the electrolysis device 30 uses a power transformer 31 of 12V and 3A to generate a sufficient amount of hydrogen and oxygen gas at the time of launching the rocket launch vehicle 10. When the current generated in the power supply transformer 31 is supplied to the electrode 32, the electrode 31 has the properties of the positive electrode (+) and the negative electrode (-). Iron (Fe) is used for the cathode rod, and nickel (Ni) or iron plated with nickel is used for the anode rod. Use three anode and three cathode bars. The case 36 accommodates the electrolyte and contains the power transformer 31 and the electrode 32. In the electrolysis chamber of the case 36 containing the electrolyte solution, a diaphragm 35 is provided between the electrolyte of the positive electrode (+) and the negative electrode (−) to prevent mixing of hydrogen and oxygen generated by electrolysis. The inside of the electrolysis chamber of the case 36 is sealed to prevent intrusion of external air. When the electrolyte is used as pure water, electricity does not pass well, and a small amount of sodium hydroxide (NaOH) is used in pure water. This electrolyte is preferably used 20 vol% sodium hydroxide solution.

As shown in FIGS. 1 and 3, a hose 26 is attached around both sealed electrodes, which are connected to the gas inlet 37 inside the cylinder 22. At this time, the hose 26 connects the hoses one by one from both electrode poles. Between these hoses 26, there is a T-shaped connecting portion 29, which is fastened in a fitting manner so that the gas is separated when the gas is supplied under pressure.

The first linear connection part is installed between the cathode part and the hose, and the second linear connection part is installed between the anode part and the hose. These first and second connections are also fastened in a fitting manner and separated when the gas is supplied at an overpressure.

And, the cock valve 27 is installed in the hose 26 fastened between the T-shaped connecting portion 29 and the gas injection port 37. The cock valve 27 is installed in the middle of the hose 26 to stop the flow of gas or to adjust the flow rate. Thus, when a sufficient amount of hydrogen and oxygen are trapped inside the cylinder 22, the cock valve 27 is closed to prevent further mixing of hydrogen and oxygen gas into the space inside the cylinder 22.

Hereinafter, the operation relationship of the rocket model device using the explosive power of hydrogen having the above configuration.

In the electrolysis device 30 of the rocket model shown in FIG. 4, when the power switch 33 is operated, a current is generated in the power transformer 31. When this current flows through the electrode 32, water starts electrolysis. When this is expressed as a chemical formula, the following chemical formula 1 is shown.

2H₂0 → 2H₂ + O₂

In this chemical reaction, hydrogen is produced at the negative electrode and oxygen is produced at the positive electrode. At this time, the velocity of the generating gas depends on the strength of the current, and the volume of hydrogen and oxygen generated depends on the amount of water or the amount of sodium hydroxide applied. However, the volume ratio of hydrogen and oxygen produced is always constant at 2: 1. The generated hydrogen and oxygen travel through a hose 26 connected around both electrodes 32. Then, hydrogen and oxygen are mixed at the T-type connecting portion 29, and transported along the hose 26 is collected in the internal space of the cylinder 22 at the gas inlet 37. In this way, when a sufficient amount of hydrogen and oxygen are trapped inside the cylinder 22, the cock valve 27 is closed to prevent further mixing of hydrogen and oxygen gas into the interior space of the cylinder 22.

At this time, the volume of the mixed gas of hydrogen and oxygen collected in the cylinder 22 depends on the intended firing distance and the firing height. In this way, when the mixed gas is collected, the switch 33 is placed in an OFF state in the electrolysis device 30 to cut off the supply of current. Then, the cock valve 27 is closed so that the mixed gas no longer flows into the cylinder 22.

In this state, when the button 41 of the ignition device 40 is pressed, the piezoelectric 43 converts the mechanical pressure for pressing the button 42 into electrical properties. The electricity generated at this time is transmitted to the ignition port 44 along the wire 42, the spark discharge occurs in the ignition port (44). The 2: 1 mixed gas of hydrogen and oxygen rises above 500 ° C at the moment of flame discharge and violently reacts and explodes. This explosive force acts on the piston 11 and the inner wall of the cylinder 22 and pushes the piston 11 upwardly movable up and down along the cylinder 22. Then, the piston 11 and the rocket launch body 10 which are integrally formed are launched.

The launched rocket launch vehicle 10 flies by drawing a parabola. At this time, the wing 12 maintains the directional progression of the rocket launch vehicle (10). Then, when the rocket launch vehicle 10 reaches its highest point, it stops momentarily, loses balance, and falls while rotating based on the center of gravity. At this time, the lower end of the heavy rocket launching body 10 is located below and the upper end is located above the drop. By this movement, the cap 13 is opened, and the parachute 16 located therein is opened. Operation of the parachute 16 reduces the speed and the rocket launch vehicle 10 falls safely.

As described in detail above, unlike the conventional water rocket and the small (powder) rocket, the rocket model device using the explosive power of the present invention uses the explosiveness of hydrogen as fuel, so that the launching of the safe rocket model can be performed. This has the advantage of obtaining more accurate execution results with simple operation.

In addition, the rocket model device of the present invention can confirm the existence of hydrogen and oxygen generated through the electrolysis of water, so that it is easy to understand the principles and contents of science, and provides an interest to learners, thereby naturally increasing the educational effect.

In addition, the rocket model device of the present invention can freely adjust the amount of hydrogen used as fuel, it is possible to more precisely launch the rocket launch vehicle.

In addition, the rocket model device of the present invention can adjust the firing angle can be launched a rocket launch vehicle at a desired launch angle.

In addition, the rocket model device of the present invention can safely drop the rocket launch vehicle because the parachute is unfolded.

In addition, the rocket model device of the present invention is possible to discharge the flame at a long distance by using the wire can prevent the safety accident that may occur in the launch of the rocket launch vehicle in advance.

Although the technical idea of the rocket model device using the explosive power of hydrogen of the present invention has been described with the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (2)

A rocket launcher with a piston fixed therein, A launch pad including a cylinder supporting the rocket launch vehicle and engaging the piston; An electrolysis device for generating hydrogen and oxygen using the electrolysis of water and supplying the inside of the cylinder; The rocket model device using the explosion force of hydrogen, characterized in that it comprises a ignition device to discharge the flame inside the cylinder to the rocket projectile is launched by the explosion force of hydrogen. The rocket model apparatus of claim 1, wherein a parachute is fixed to an upper portion of the rocket launch body, and a cap capable of opening and closing while covering the parachute is coupled.