JP2010280330A - Soft landing parachute drop equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a problem that a parachute suspended item is damaged due to crash against a ground surface at a high speed dropping even if there is a possibility that a parachute drop equipment may be deviated from a safe dropping position under influence of wind unless this equipment is dropped at a higher speed of more than 40 Km/hour when the parachute drop equipment is used at a high altitude. <P>SOLUTION: This soft landing parachute drop equipment is operated in such a way that an explosive device 20 is installed at the parachute drop equipment, explosion is generated inside a space enclosed by a parachute umbrella 1, a suspended rope 2 and a parachute suspended item just before the parachute drop equipment lands on a ground surface and then the parachute drop equipment is soft landed with its explosion power. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

      The present invention relates to a parachute in which the landing speed of a parachute is reduced near the ground and the suspended object is softly landed safely.

Conventionally, there is a parachute dropping device that dampens the speed of a suspended object near the ground and safely softly lands the suspended object. A rocket engine is mounted under the suspended object and the rocket engine is injected just before landing. If the object is heavy, the rocket engine is large and heavy, and the rocket must be attached to the bottom of the suspension.

Japanese Patent Application No. 53-18750 Japanese Patent Application No.59-20131 Japanese Patent Application No. 4-351817

As described above, the parachute dropping device using a rocket according to the prior art is not effective in terms of weight, and the buffering effect is achieved by reducing or zeroing the falling speed of suspended objects when landing or landing regardless of the parachute dropping speed. It is to provide a parachute dropping device that protects suspended objects from destruction by demonstrating the above.

In order to achieve the above object, the parachute dropping device according to the present invention causes an explosion immediately before landing, surrounded by an umbrella, a parachute cord, and a suspended object, and causes the suspended object to softly land by decelerating the parachute dropping speed by the blast. With the goal. Since the explosion is under the umbrella, the blast pushes the falling umbrella upward and brakes the falling speed of the suspended object.

The suspended object suspended by the parachute umbrella according to the present invention descends at a constant speed due to the resistance of air, but in order to land accurately at the target location, a rapid descending speed of 40 km / h is desirable, but landing at this speed Then, the suspended object is destroyed by an impact with the ground. When the suspended object descends to a predetermined height, it is necessary to reduce the descent speed from several kilometers per hour to zero speed.

Explosives are detonated by the detection signal from the altitude sensor in a parachute umbrella, parachute cord, and suspension.
Then, the explosion wave reaches the parachute umbrella, the parachute cord, and the suspended object, but the parachute umbrella with the overwhelmingly large area receives the greatest force. As a result, the falling speed of the suspended object slows down and stops if the explosion is large.
If there is a curtain on the cord of the parachute dropping device, the suspended object is pulled up by receiving the force of the explosion and curving to the outside of the parachute, and the falling speed of the suspended object is reduced.

Therefore, the suspended object collides with the ground and the surface of the water and is immune from being destroyed.
When the suspended object is a spacecraft, the lower part is exposed to a high temperature of 5000 degrees when entering the atmosphere, and it is difficult to attach a rocket device or a shock absorber.
A rocket device requires a large driving force temporarily at the time of landing and landing, and the size of the device is inevitably increased.

In the case of a spacecraft, the explosive device is mounted not on the lower part of the spacecraft exposed to high temperatures but on the upper part, so it is technically easier than the lower part exposed to high temperatures.
Explosive devices are effective because they can be much smaller in volume and weight than rockets.

The explosive device connects the center of the parachute umbrella and the suspended object with a parachute center cord, and ties the explosive device between them. The explosive device has a fuze and explodes with a signal from the suspended object connected to the suspended object. .
The suspended object has an altitude sensor and a ground distance sensor, and issues an explosion command when the ground or water surface is near.
The parachute umbrella receives pressure upward due to the blast of the explosion, and the falling speed of the suspended object is reduced. Suspension can be softly attached to the ground.

Cause multiple explosions. Regarding how to reduce the falling speed in several stages.
Without using the parachute center code.
Install multiple devices to launch explosive devices in the suspension.

As a method for firing the explosive device, there are a method using a gunpowder, that is, a method using a propellant, a method using a compressed air, and a method using a compressed gas.
The fired explosive device is exploded by a time fuse and a lead wire, surrounded by a parachute umbrella, parachute cord, and suspension.

A barrel that fires multiple explosion devices in the suspension, and when the ground or water surface approaches, the explosion devices are fired from multiple barrels at intervals from the first shot. The second explosion, the third explosion, the fourth explosion, and repeated explosions at intervals, the parachute dropping device's falling speed is reduced by the first stage, the second stage is reduced, the speed is reduced by the third stage, ... , And decelerate little by little.
It is effective to adjust the explosive power and number of explosions of the explosive device so that the falling speed is zero when touching the ground.

The external perspective view of the parachute dropping apparatus which concerns on embodiment using the parachute center code | cord | chord of this invention Sectional drawing which attached the explosion device to the parachute center cord. The figure which shows the embodiment example when the explosion device of a parachute dropping device exploded. Fig. 3 is an embodiment diagram in which a turret for launching explosives of a parachute dropping device is installed. Sectional view of the turret launching the explosion device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment in which a center cord 5 that connects the center of a parachute umbrella 1 and the center of a suspended object is provided, and an explosion device 4 is attached to the center cord 5.
The parachute center cord 5 is for holding the explosive device 4 and can be a thin rope.
The parachute cord curtain 18 is for receiving the explosion wave sideways and bending the parachute cord 2 to lift the suspension 3 upward at the moment of explosion.

The explosive device 4 connects the center of the parachute umbrella 1 and the suspension 3 with a parachute center cord 5, and ties the explosive device 4 between them. The explosive device 4 has a fuze 7 attached to the suspension 3. .
The explosion device 4 explodes with a signal from the suspension 3.
The suspension 3 has an altitude sensor and a ground distance sensor, and issues an explosion command when the ground or water surface is near.

FIG. 2 is a cross-sectional view of the explosion device 4 attached to the parachute center cord 5. The explosion device 3 is fixed to the parachute center cord 5, and there are rope attachment portions 11 on and below the explosion device.
The explosive device has a fuze 7.
The fuze is controlled and ignited by a control cord 9 from the suspension when the suspension reaches a predetermined altitude. The fuze is controlled by an ignited altitude sensor.

The container coating 6 of the explosive device 4 is suitable if rubber is used because it does not damage the suspension.
Also, plastics such as polyethylene and polypropylene are preferable because they do not cause suspensions.
If the plastic on the outer shell of the container has fine lines, the fragments will be smaller when exploding, and the suspended objects will not be damaged.
The container shell can be made of paper like fireworks.

FIG. 3 is a diagram showing an embodiment example when the explosion device of the parachute dropping device has exploded. That is, it is a figure explaining the embodiment example when detecting that the suspended object has approached the ground with a sensor, operating the fuze 7 and exploding the explosion device.

The parachute umbrella receives the explosion wave and receives the blast pressure upward, and the falling speed is attenuated. At the same time, the parachute cord curtain is bent by the blast pressure in the lateral direction.
As a result, the distance between the parachute umbrella and the suspended object is reduced, and the suspended object is pulled up in the direction of the parachute umbrella so that the landing gear can be softly landed.

FIG. 4 is a cross-sectional view of the gun barrel 10 in which the gun barrel 10 is installed inside the suspension 3 and the firing explosion device 20 is mounted inside the gun barrel 10.
A firing explosive device 20 is fired from the gun barrel 10 toward the parachute umbrella 1, and the time fuse 17 incorporated in the explosive explosive device 20, exploding inside the parachute umbrella 1, the parachute cord 2, and the suspension 3 surrounded by the lead wire It is a method to raise.
One end of the suspension rope is fixed to the parachute umbrella 1 and the lower end is fixed to the circumferential donut body 19 with a parachute cord fixing clamp 13. At the center of the donut body 19, the gun barrel 10 is installed upward, that is, toward the parachute umbrella 1.

When a gun barrel 10 for launching a plurality of explosive devices 20 is installed in the suspension 3 and the ground surface and water surface are close, the projecting explosive devices 20 are spaced from the first gun 10 at intervals from the first gun. Fired, repeated explosions at intervals of 1st explosion, 2nd explosion, 3rd explosion, 4th explosion, the parachute dropping device's falling speed was reduced by the first stage, decreased by the second stage, Decelerate little by little with the 3rd speed reduction.
It is effective to adjust the explosive power and the number of explosions of the explosive device for launch 20 so that the falling speed becomes zero when touching the ground.

When multiple gun barrels 10 are installed, if the parachute dropping device is falling at 30 km, the first explosion near the ground will have a 20 km fall speed, the second explosion will have a 10 km fall speed, the third explosion will have a 0 km fall speed, etc. The fall speed of the parachute dropping device can be gradually reduced.
That is, the suspension 3 can be softly landed on the ground and the water surface.

The shock absorber 12 is provided to reduce the tension load of the plurality of suspension ropes when the parachute umbrella 1 is opened.
In order to explode the explosion device inside the parachute umbrella 1, the parachute cord 2, and the suspension 3, the parachute cord 2 is secured to the suspension 3 by a peripheral member, and the gun barrel 10 is positioned inside the parachute cord 2.

FIG. 5 is a cross-sectional view of the gun barrel 10 that fires the explosive device 4 and a cross-sectional view of the explosive device 20 for launching.
The gun barrel 10 has a propellant 14, and a detonator 15 is provided. When the detonator 15 is struck with the shooter 16, the propellant 14 explodes and launches the explosive explosive device 20. The explosive explosive device 20 has a time fuse 17. , And explode after a certain amount of time with a lead wire. The launch explosion device 20 explodes inside the parachute umbrella 1, the parachute cord 2, and the suspension 3 by controlling the timed fuse 17 and the lead wire.

In order to explode the launch explosion device 20 at appropriate positions inside the parachute umbrella 1, the parachute cord 2, and the suspension 3, a time fuse 17 or a lead wire is used.

By dropping the spacecraft at high speed according to the present invention, it is possible to land in a safe place free of obstacles without being swept away by the wind.
The soft landing will not destroy the spacecraft by colliding with the ground, it can be used repeatedly, and the safety of the astronauts inside can be ensured.
When dropping goods and vehicles with a parachute, the suspended object can be landed without damage.

DESCRIPTION OF SYMBOLS 1 Parachute umbrella 2 Suspension rope 3 Suspension thing 4 Explosion device 5 Parachute center cord 6 Explosion device shell 7 Fuze 8 Gunpowder 9 Control cord 10 Gun barrel 11 Rope attachment part 12 Shock absorber 13 Parachute cord fixing clamp 14 Propellant 15 Detonator 16 Shooting needle 17 Time limit Fuze 18 Parachute cord curtain 19 Donut body 20 Soft wear explosion device

Claims (3)

The parachute dropping device is equipped with an explosive device and detects that the parachute dropping device has reached a predetermined height when viewed from the drop point, causing the explosive to explode inside the parachute umbrella, the suspension rope and the suspended object. A soft parachute dropping device for soft and soft wearing.
In the parachute dropping device according to claim 1, the parachute umbrella is connected to the center of the umbrella and a suspended object with a rope, the explosion device is held between the ropes, and the parachute dropping device has reached a predetermined height when viewed from the drop point. A soft parachute dropping device that detects and explodes the explosives on the inside surrounded by the parachute umbrella, the suspension rope, and the suspension, and generates an explosion in response to a command from the suspension.



The parachute dropping device according to claim 1, wherein the suspension device has an explosive device including a lead wire, a control fuze controlled by a command, and a time fuze that explodes after a certain time in a suspended object, and an apparatus for launching and launching the explosive device. It is detected that the parachute dropping device has reached a predetermined height when viewed from the drop point by holding it on the suspension, and the explosive is commanded from the suspension by the inside of the parachute umbrella, the suspension rope and the suspension. A soft-wearing parachute dropping device that generates an explosion by a time fuse after launch and softens it.