JP6086382B2 - Flotation bag deployment method - Google Patents

Description

  The present invention relates to a floatation bag deployment method for deploying a floatation bag stored in a capsule descending from the sky.

For example, the landing of capsules dropped from the sky by balloons or returned to capsules after being launched on rockets is generally landed on the sea where there are fewer restrictions on location compared to the ground. is there. In the case of landing on the sea, a flotation bag (floating bag) for preventing the capsule from sinking into the sea before the capsule is collected may be used.
Such a flotation bag needs to be unfolded during use in order to exhibit its function. As a flotation bag deployment device for performing this deployment, for example, a device for which Non-Patent Document 1 has already been disclosed is already known.

1 and 2 are schematic views of a flotation bag deployment device described in Non-Patent Document 1. FIG.
In this figure, 21 is a capsule, 22 is a parachute, 23 is a flotation bag, and 24 is a sea surface.

The capsule 21 in FIG. 1 is pulled up to the sky in a state as shown in FIG. 1A, for example, attached to a balloon or stored in a transport aircraft, and has reached a predetermined altitude, etc. When the condition is met, it is dropped from the sky.
Inside the capsule 21, a parachute 22 for reducing the descending speed of the capsule 21 and the above-described flotation bag 23 are stored in a state before deployment.

  After satisfying the conditions such as descending to a predetermined altitude after the state of FIG. 1 (A), the stored parachute 22 is pulled out from the capsule 21, as shown in FIG. Decelerate the descent speed by deploying.

As shown in FIG. 2A, the flotation bag 23 uses the power of a seawater battery (not shown) when seawater enters the capsule 21 after the capsule 21 has landed on the sea surface 24. , As shown in FIG. As a result, even after the parachute 22 has landed on the sea surface 24 and contracted, buoyancy can be generated with respect to the capsule 21 to prevent subsidence into the sea.

2011 Atmosphere Ball Symposium “Concept of Ground-Recovered Microsatellite μ-LRS and Capsule Reentry Experiment Using Atmosphere”

In Non-Patent Document 1 described above, depending on conditions such as the weight of the capsule 21, subsidence may begin immediately after the capsule 21 has landed on the sea surface 24.
Therefore, when the expansion of the flotation bag 23 starts after the capsule 21 has landed, the capsule 21 may sink deeply into the sea before the expansion of the flotation bag 23 is completed. In this case, the expansion of the flotation bag 23 is hindered by the influence of the water pressure in the sea, and buoyancy cannot be sufficiently generated. Therefore, there is a problem that the capsule 21 cannot resurface near the sea surface 24. It has occurred.

  The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a method for expanding a flotation bag that shortens the time required for the flotation bag to generate buoyancy after the capsule has landed.

According to the present invention, there is provided a method for deploying a flotation bag that deploys a flotation bag that generates buoyancy after deployment,
The flotation bag;
A capsule for storing the flotation bag therein;
An extraction device for pulling out the flotation bag from the capsule;
Preparing a deployment device for deploying the flotation bag;
(A) Before the capsule has landed by the extraction device, the flotation bag is pulled out of the capsule,
(B) The flotation bag is deployed when the capsule has landed or before it has landed by the deployment device ,
The capsule is housed therein, and a parachute that decelerates the descent speed in the air;
Having a first connecting line connecting the parachute and the flotation bag;
In (A), the flotation bag deployment method is characterized in that when the parachute is pulled out, the flotation bag is pulled out via the first connecting line .

According to another embodiment of the present invention, the Groote Activation bag is inside is divided into two or more spaces,
In (B) above,
(B1) Only a part of the space is developed,
(B2) After (B1), the other part of the space is developed.

In addition, according to another embodiment of the present invention, the floatation bag and the capsule are connected to each other, and the floatation bag is unfolded until the buoyancy is generated and the capsule sinks or more. Preparing a second connecting rope having a length;
(C) The flotation bag before generating buoyancy is prevented from sinking with the capsule by the second connecting rope.

  According to the present invention, the extraction device starts pulling out the floatation bag before or after the capsule has landed, so that the floatation bag is pulled out of the capsule before the capsule has landed. It is possible to reduce the time required for the flotation bag to generate buoyancy after the capsule has landed.

It is the schematic diagram before and behind parachute expansion | deployment of the conventional capsule. It is the schematic diagram after the landing of the conventional capsule. It is explanatory drawing before and behind parachute expansion | deployment of the capsule by this invention. It is a schematic diagram when the capsule according to the present invention has landed. It is the model after the expansion | deployment of the flotation bag by this invention. It is a flowchart of the expansion | deployment method of the flotation bag by this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

FIG. 3A is a perspective view of a capsule according to the present invention, and FIG. 3B is a schematic view when the capsule according to the present invention is lowered.
FIG. 4 is a schematic view when the capsule according to the present invention has landed. Further, FIG. 5A is a schematic diagram after deployment of the flotation bag according to the present invention, and FIG. 5B is a schematic diagram after deployment of the flotation bag of another embodiment according to the present invention. .
In this figure, 1 is a capsule, 1a is a storage space, 1b is an extraction device, 2 is a parachute, 3 is a flotation bag, 3a is a deployment device, 3b is a first connection cable, 3c is a second connection cable, and 4 is a water surface. It is.

This capsule 1 is a part of a launched rocket, a part of a rocket returned from outer space, or mounted on a balloon, etc. Are assumed to be dropped from above.
The capsule 1 has a storage space 1a and an extraction device 1b for discharging the stored contents of the storage space 1a to the outside. In this example, the storage space 1a is assumed to store a parachute 2 and a flotation bag 3 described later. In this example, the capsule 1 is assumed to have a prefix cone shape in consideration of the stability of the descending posture and the like.

The parachute 2 is stored in the storage space 1a when the capsule 1 is dropped. For example, when the capsule 1 is lowered to a predetermined altitude or received a remote operation from the outside, the parachute 2 is encapsulated by the extraction device 1b. 1 It may be drawn outside. The capsule 1 having the parachute 2 can reduce the descent speed by receiving the air resistance accompanying the descent. In addition, the parachute in this example is a single parachute, but a parachute group including a plurality of small parachutes may be employed in order to stabilize the descending posture.
In addition, this parachute 2 assumes what shrinks after the water surface 4 landing of the capsule 1.

When the capsule 1 is dropped, the flotation bag 3 is stored in the storage space 1a. For example, when the capsule 1 is lowered to a predetermined altitude or receives an external operation from the outside, the extraction device 1b It may be pulled out of the capsule 1 by. The extraction device 1b may be a device that pulls out the parachute 2 to the outside of the capsule 1 and a device that pulls out the flotation bag 3.
Moreover, when the parachute 2 and the flotation bag 3 are connected by the first connection cable 3b and one of the parachute 2 and the flotation bag 3 is pulled out to the outside, the other may be pulled out to the outside. . In this case, the extraction device for the parachute 2 and the flotation bag 3 only needs to have a single extraction device 1b. Moreover, the structure which pulls out both the parachute 2 and the flotation bag 3 by the extraction apparatus 1b may be sufficient.
With this configuration, since the flotation bag 3 is discharged to the outside before the capsule 1 is landed, the time from the landing of the capsule 1 to the completion of the deployment of the flotation bag 3 is shortened. can do.
Therefore, for example, the flotation bag 3 is not extracted to the outside before the capsule 1 lands, but the water is infiltrated into the capsule 1 after the capsule 1 lands, and the flotation bag 3 contacts the water. Compared with the case where the configuration for deploying the bag 3 is adopted, it is possible to shorten the time until the flotation bag 3 is deployed.
The extraction device 1b may be a mechanism that releases the parachute 2 or the like to the outside by an elastic force of a spring or the like provided inside the storage space 1a, for example, an altimeter (not shown) attached to the capsule 1, for example. ) May be triggered by a signal from). Moreover, the structure which receives the signal from the outside and starts may be sufficient.

For example, as illustrated in FIG. 4, the flotation bag 3 may be deployed by the deployment device 3 a when triggered by contact with water. Specifically, for example, the deployment device 3a has a seawater battery (not shown) that generates an electric current by contact with seawater, and when the seawater comes into contact with the capsule 1 after landing, the current is supplied. The gas cylinder and the gas generating agent may be activated to develop the gas cylinder. Alternatively, for example, the deployment device 3a has a configuration in which a receiving device (not shown) is provided inside and activated by receiving a signal from the outside, or a sensor provided outside the flotation bag 3. The sensor may detect that the sensor has come into contact with the water surface 4 and start the deployment of the flotation bag 3.
In addition, this expansion | deployment apparatus 3a is equipped with what is expand | deployed by the impact at the time of landing, and is equipped with the altitude detector and expand | deploys by the information based on this.
In FIG. 3, the deployment device 3a is attached to the flotation bag 3. However, the deployment device 3a may be attached to the capsule 1 or deployed along with extraction to the outside by the extraction device 1b. There may be.
After the flotation bag 3 is deployed by the deployment device 3a as described above, the capsule 1 can be held near the water surface 4 as shown in FIG. In addition, as shown to FIG. 5 (A), the capsule 1 and the flotation bag 3 are connected by the 2nd connection cable 3c.

  The first connecting cable 3b is for connecting the parachute 2 and the flotation bag 3 as described above. The first connecting cord 3b is preferably made of a material that does not have elasticity in consideration of the stability of the lowered posture of the flotation bag 3 after the flotation bag 3 is pulled out of the capsule 1. .

  In the present invention, it is assumed that after the flotation bag 3 is pulled out from the capsule 1, the capsule 1 is deployed when the capsule 1 has landed or before it has landed. Therefore, since the deployment of the flotation bag 3 can be accelerated as compared with the prior art, the settling of the capsule 1 can be suppressed.

  Here, when the deployment of the flotation bag 3 is started after the capsule 1 has landed or when it is necessary to use the large flotation bag 3 due to the weight of the capsule 1 or the like, the landing of the capsule 1 Even if the flotation bag 3 is pulled out to the outside before, the capsule 1 may sink into the water before the expansion of the flotation bag 3 is completed.

Therefore, according to another embodiment of the present invention, as shown in FIG. 5 (B), the capsule 1 and the flotation bag 3 are connected by the second connection cable 3c, and the second connection cable 3c is The buoyancy is generated when the flotation bag 3 is deployed, so that the capsule 1 has a length longer than the depth at which the capsule 1 sinks.
As a result, even if the capsule 1 sinks before the deployment of the flotation bag 3 is completed, it is possible to prevent the flotation bag 3 from sinking by being dragged by the sinking capsule 1. Since the bag 3 can remain in the vicinity of the water surface 4, it can be prevented from being hindered by water pressure.

In addition, the inside of the flotation bag 3 is divided into two or more spaces (not shown). For example, before the capsule 1 lands, only a part of the space is expanded, and then the other portions are expanded. It may be.
Accordingly, even when the capsule 1 sinks into the water after the capsule 1 has landed, at least the sinking speed can be reduced.

  The deployment of the flotation bag 3 before landing of the capsule 1 may be performed, for example, in response to a signal from an altimeter (not shown) attached to the capsule 1, or the parachute 2 is externally attached. It may be performed when it is pulled out or after a predetermined time since it is pulled out.

  FIG. 6 is a flowchart of a method for deploying a flotation bag according to the present invention.

In S1, the extraction device 1b draws the parachute 2 out of the capsule before the capsule 1 reaches the water. In S2, the flotation bag 3 is moved to the capsule 1 via the first connecting cable 3b in S1. Drawn outside.
In this example, the parachute 2 is pulled out by the extraction device 1b, but a method of simultaneously pulling out both the parachute 2 and the flotation bag 3 by the extraction device 1b may be used.

In S3, the floating device 3a deploys the flotation bag 3 when the capsule 1 has landed or before it has landed.
In this example, it is assumed that the entire floatation bag 3 is deployed by the deployment device 3a, but the interior of the floatation bag 3 is divided into two or more spaces, and before the capsule 1 reaches the water, A method of expanding only a part and then expanding the other part may be used.

In S <b> 4, when the capsule 1 is submerged in the water after the capsule 1 is landed, the flotation bag 3 that is being deployed and before the occurrence of buoyancy is prevented from subsidizing together with the capsule 1.
If the floatation bag 3 is deployed before the capsule 1 lands, and the deployment is completed when the capsule 1 lands, S4 may not be necessary. When the rotation of the rotation bag 3 is started, the capsule 1 may have already started to sink, so this is a step for dealing with such a case.
In this case, the second connection cable 3c that connects the flotation bag 3 and the capsule 1 is longer than the depth at which the capsule 1 sinks before the buoyancy is generated when the flotation bag 3 is deployed. It is desirable to have As a result, even if the capsule 1 sinks until the deployment of the flotation bag 3 is completed, the flotation bag 3 can remain near the water surface 4 and therefore the water pressure does not hinder its deployment. Because.

  According to the present invention described above, the parachute 2 is pulled out of the capsule 1 by the extraction device 1b before the capsule 1 reaches the water, so that the flotation bag 3 is attached to the outside of the capsule 1 via the first connecting line 3b. Pulled out. Therefore, it becomes possible to start the deployment of the flotation bag 3 when the capsule 1 has landed or before it has landed, and the time required until buoyancy by the flotation bag 3 occurs after the capsule 1 has landed. Can be shortened.

  In addition, this invention is not limited to embodiment mentioned above, is shown by description of a claim, and also includes all the changes within the meaning and range equivalent to description of a claim.

1 capsule, 1a storage space, 1b extraction device,
2 Parachute,
3 Flotation bag, 3a deployment device,
3b 1st connecting cable, 3c 2nd connecting cable, 4 water surface,
21 capsules, 22 parachutes,
23 Flotation bag, 24 sea level

Claims (3)

A deployment method of a floatation bag that deploys a floatation bag that generates buoyancy after deployment,
The flotation bag;
A capsule for storing the flotation bag therein;
An extraction device for pulling out the flotation bag from the capsule;
Preparing a deployment device for deploying the flotation bag;
(A) Before the capsule has landed by the extraction device, the flotation bag is pulled out of the capsule,
(B) The flotation bag is deployed when the capsule has landed or before it has landed by the deployment device ,
The capsule is housed therein, and a parachute that decelerates the descent speed in the air;
Having a first connecting line connecting the parachute and the flotation bag;
In (A), the flotation bag deployment method is characterized in that when the parachute is pulled out, the flotation bag is pulled out via the first connecting line . The Groote Activation bag is inside is divided into two or more spaces,
In (B) above,
(B1) Only a part of the space is developed,
(B2) after the (B1), other portions of the space is adapted to be deployed, flotation bag deployment method according to claim 1, characterized in that. Connecting the flotation bag and the capsule, and preparing a second connecting line having a length equal to or greater than a depth at which the capsule sinks until buoyancy is generated by the expansion of the flotation bag;
(C) The flotation bag deployment method according to claim 1 or 2 , wherein the flotation bag before generating buoyancy is prevented from sinking together with the capsule by the second connecting rope.

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