Flight body, design method, and partition body

Abstract

To provide a flight body capable of securing an evacuation time of an occupant even when fire occurs at the time of emergency landing, a design method, and a partition body.SOLUTION: According to an aspect of the present invention, a flight body is provided. This flight body includes a main space and a partition body. The main space includes: a boarding part 120 on which an occupant boards; and a mounting part 130 in which a device 13 is mounted. A partition wall 151 being the partition body includes non-metal fire-resistant or incombustible material and partitions the boarding part 120 and the mounting part 130.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an aircraft, a design method, and a partition body. [Background technology]

[0002] Air vehicles such as multicopters are used to transport goods and personnel, etc. When an aircraft is used for manned flight, it is required in the design to prevent fires from occurring during an emergency landing, or to increase the survival rate of passengers and crew members if a fire does occur.

[0003] For example, the structural integrity of fuel tanks is ensured through drop tests in which the tanks are dropped from a specified height. These drop tests are conducted to prevent fires from breaking out during emergency landings, but in order to pass the tests, the fuel tanks must be made robust, which poses the problem of increased weight. In addition, it is not realistic to conduct tests for all possible drop cases, and there is also the problem of no guarantee that a fire will not actually break out.

[0004] Additionally, techniques for ensuring safety in the event of a fire have also been proposed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6616580 Summary of the Invention [Problem to be solved by the invention]

[0006] In consideration of the above circumstances, the present invention provides an aircraft, a design method, and a partition body that can ensure evacuation time for passengers even in the event of a fire during an emergency landing. [Means for solving the problem]

[0007] According to one aspect of the present invention, there is provided an air vehicle. The air vehicle includes a main space and a partition. The main space includes a boarding section for passengers to board and a loading section for carrying equipment. The partition is made of a non-metallic flame-retardant or non-combustible material and separates the boarding section from the loading section.

[0008] According to one aspect of the present invention, it is possible to ensure evacuation time for passengers in the event of an emergency landing without significantly increasing the weight of the aircraft. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing an example of the appearance of an aircraft. [Diagram 2] 2 is a cross-sectional view showing the inside of a main body 10 in a simplified manner. [Diagram 3] 13 is a diagram showing an example in which a boarding section and a mounting section are separated by a wall. FIG. [Figure 4] 13A and 13B are diagrams showing another example in which the partition is configured as a wall. [Diagram 5] 13A and 13B are diagrams showing another example in which the partition is configured as a wall. [Figure 6] FIG. 13 is a diagram showing a first example in which the partition is configured as a cloth-like member. [Figure 7] FIG. 7 is a perspective view for explaining a partition 161 in FIG. [Figure 8] FIG. 13 is a diagram showing a second example in which the partition is configured as a cloth-like member. [Figure 9] 10 is a flowchart showing a flow of designing a partition body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Various features shown in the following embodiments can be combined with each other.

[0011] 1. Examples of flying objects Fig. 1 is a diagram showing an example of the external appearance of an aircraft. The aircraft 1 shown in the figure includes a main body 10 and a rotor 20. The main body 10 includes a space for passengers to board and a space for carrying equipment necessary for the flight of the aircraft 1, and includes a boarding gate 11 used for passengers to enter and exit. The main body 10 may also include an emergency exit (not shown).

[0012] 2. Space inside the aircraft Next, the internal space of the main body 10 will be described. Fig. 2 is a cross-sectional view showing the inside of the main body 10 in a simplified manner. As shown in Fig. 2, the main body 10 has a main space 100 formed therein, in which seats 12 for the crew are arranged, and equipment 13 is also arranged. The equipment 13 is a general term for equipment, but may include things other than equipment, and here includes things that may ignite due to impact, etc. For example, the equipment 13 includes a battery, a fuel tank, etc.

[0013] The main body 10 of the aircraft 1 includes a main space 100 and a partition body, which will be described later. The partition body separates the main space 100 into a boarding section where a passenger boards and a mounting section where equipment is mounted, so that the main space 100 includes the boarding section where a passenger boards and the mounting section where equipment is mounted. The partition body is made of a non-metallic flame-retardant or non-combustible material and separates the boarding section and the mounting section.

[0014] 3. Examples of partitions - bulkheads First, an example in which the partition is configured as a wall will be described. FIG. 3 is a diagram showing an example in which the boarding section and the mounting section are separated by a wall. In the example shown in the figure, the partition is a bulkhead 151 fixed to at least the floor surface of the main space 100 and the ceiling of the main space 100. This bulkhead 151 divides the main space 100 into a boarding section 120 in which the seats 12 and the like are arranged, and a mounting section 130 in which the equipment 13 is arranged. This partition, the bulkhead 151, is detachable from the main body 10, and is preferably detachable with the same tool as that used for the maintenance of the equipment 13, or without using any tool. Note that, in the case where an entrance through which maintenance personnel for the equipment 13 can enter and exit is provided on the mounting section 130 side of the main body 10, the bulkhead 151 may be non-detachable.

[0015] Furthermore, the partition wall 15 has a plane perpendicular to the floor surface of the main body 10, but when the partition body is configured as a wall, it is not necessary for the partition body to be a wall perpendicular to the floor surface of the main body 10, as in the case of the partition wall 151. FIGS. 4 and 5 are diagrams showing another example of the case where the partition body is configured as a wall. The partition wall 152 shown in FIG. 4 is similar to the partition wall 151, but is not installed perpendicular to the floor surface of the main body 10, but is installed at a predetermined angle to the floor surface of the main body 10. Furthermore, the partition wall 153 shown in FIG. 5 is similar to the partition wall 151, but is not flat like the partition wall 151, but is a partition wall having a curved portion.

[0016] 4. Examples of partitions - Partition cloth Next, an example in which the partition is configured as a cloth will be described. Note that here, two examples in which the partition is configured as a cloth will be described, and in both cases, the partition includes a flame-retardant or non-flammable cloth that covers the equipment.

[0017] FIG. 6 is a diagram showing a first example in which the partition is configured as a cloth-like one. FIG. 7 is a perspective view for explaining the partition 161 in FIG. 6. As shown in FIG. 7, the partition 161 includes a support portion 161f and a cloth 161c. The support portion 161f fixes the cloth 161c, and forms a mounting portion 130 between the cloth 161c and the floor surface of the main body 10 (main space 100) as shown in FIG. 6. At least a part of the end portion of the cloth 161c, for example, each vertex of a rectangle where the cloth 161c contacts the floor surface of the main body 10, is fixed to the floor surface. This partition 161 has a square shape when viewed from above (the ceiling side of the main body), but may be a polygon or a circle. The partition 161 has a shape similar to that of a fly screen or the like.

[0018] Moreover, the partition body 161 is detachable from the floor surface of the main body 10, and by fixing the partition body 161 to the floor surface of the main body 10 with a hook or ring-shaped fastener, the partition body 161 can be attached and detached without using tools.

[0019] FIG. 8 is a diagram showing a second example in which the partition is configured as a cloth-like one. As shown in the figure, the partition 162 includes a hanging part 162s and a cloth 162c. The hanging part 162s is a string-like member, and a part other than the end of the cloth 162c is hung from the ceiling of the main body 10 (main space 100) to form a mounting part 132 between the cloth 162c and the floor surface of the main body 10 (main space 100). At least a part of the end of the cloth 162c, for example, each vertex of a rectangle where the cloth 162c contacts the floor surface of the main body 10, is fixed to the floor surface. This partition 162 has a square shape when viewed from above (the ceiling side of the main body), but may be a polygon or a circle. The partition 162 has a shape similar to that of a mosquito net or the like.

[0020] In addition, the partition body 162 is detachable from the floor and ceiling of the main body 10, and can be attached and detached without using tools by fixing the partition body 162 to the floor and ceiling of the main body 10 with hook or ring-shaped fasteners.

[0021] In addition, when the partition is configured as a cloth-like body, it may have a form other than the above-mentioned example, and may be, for example, a form in which the ends of the cloth-like partition are fixed to the floor and ceiling, as in the partition wall 151 shown in Figure 3.

[0022] 5. Characteristics of the partition Next, the characteristics of the above-mentioned partitions (partitions 151, 152, 153, partitions 161, 162) will be described. As described above, the partitions are made of a nonmetallic flame-retardant or non-combustible material. For example, flame-retardant plywood, flame-retardant fiberboard, flame-retardant plastic plate, etc. can be used for partitions 151, 152, and 153. Examples of flame-retardant plastics include flame-retardant EP rubber, cross-linked polyethylene, flame-retardant chloroprene rubber, polyvinylidene fluoride, and tetrafluoroethylene.

[0023] In addition, partitions 161 and 162 can be made of flame-retardant fibers such as glass fibers. Examples of flame-retardant fibers include those in which a compound containing chlorine or fluorine is copolymerized in a fiber polymer, those in which a phosphorus-based compound is copolymerized with a polymer, and those in which a highly rigid polymer is used that forms a network by cross-linking.

[0024] In addition, the characteristics that can be used as a partition body are those that can maintain flame retardancy or non-combustibility for a period of time that is longer than the time required for the evacuation of the maximum number of passengers in the event of a fire in the device 13. For example, when used in an aircraft with a passenger capacity of several people, the partition body needs to maintain flame retardancy or non-combustibility for a period of several to tens of seconds, and if the passenger capacity is a dozen or so, it needs to maintain flame retardancy or non-combustibility for several tens of seconds. This evacuation time will differ depending on the number of boarding gates provided in the aircraft, the presence or absence of emergency exits, etc.

[0025] Therefore, if the equipment 13 were to catch fire, the partition must be able to maintain its flame retardant or non-flammable properties for a specified period of time or longer against the anticipated firepower of the ignition, and the specified period of time is the time required for the evacuation of the maximum number of passengers.

[0026] 6. Partition design flow Next, a method for designing a partition will be described. The design method described here is a method for designing a partition used in an aircraft, which divides the internal space of the aircraft into a boarding section where a passenger boards and a mounting section where equipment is mounted. Figure 9 is a flowchart showing the flow of designing a partition.

[0027] In designing a partition, first, the evacuation time of passengers corresponding to the capacity of the aircraft is calculated based on the evacuation route of the aircraft, for example, the number of boarding gates and the presence or absence of emergency exits (step S101). Next, the fire resistance time of the partition is determined based on the calculated evacuation time (step S102). The fire resistance time is calculated by multiplying the evacuation time by a safety coefficient, or by adding a certain time to the evacuation time. Of course, the calculated evacuation time may be determined as the fire resistance time.

[0028] Next, the equipment mounted on the target aircraft is identified (step S103), and the fire power of the identified equipment when it ignites is identified (step S104). The fire power of the equipment when it ignites may be determined experimentally, or test results may be obtained from the equipment manufacturer, etc. Then, a non-metallic material that maintains its flame retardancy or non-combustibility against the fire power for a fire resistance time (evacuation time) or more is selected (step S105). When selecting this material, the thickness when used as a partition is also taken into consideration. Note that only one type of material needs to be selected, but multiple materials may be selected at this stage.

[0029] Next, the partition is designed based on the selected material (step 106). At this time, if multiple materials are selected, the weight, cost, etc. of each material are taken into consideration when designing.

[0030] The design method described here can also be used in a design device. Specifically, a computer equipped with a computing unit, for example, a central processing unit (CPU), and a program for operating the computer are used to operate the computer as a design device. The program designs a partition body according to the design method described above.

[0031] 7.Other The present invention may be provided in the following aspects.

[0032] (1) An aircraft comprising a main space and a partition body, the main space including a boarding section for passengers and a mounting section for carrying equipment, the partition body being made of a non-metallic flame-retardant or non-flammable material and separating the boarding section from the mounting section.

[0033] (2) The aircraft described in (1) above, wherein the partition body is removable without the use of tools.

[0034] (3) The aircraft described in (1) or (2) above, wherein the partition is a bulkhead fixed to at least the floor of the main space and the ceiling of the main space.

[0035] (4) The aircraft described in (3) above, wherein the bulkhead has a plane perpendicular to the floor surface.

[0036] (5) An aircraft as described in (1) or (2) above, wherein the partition includes a flame-retardant cloth covering the equipment.

[0037] (6) The aircraft described in (5) above, wherein the partition body is provided with a support portion, the support portion fixes the cloth, and forms the mounting portion between the cloth and a floor surface of the main space, and at least a portion of an end of the cloth is fixed to the floor surface.

[0038] (7) In the flying body described in (5) above, the partition body is provided with a hanging portion, and the hanging portion suspends a portion of the cloth other than the end from the ceiling of the main space to form the mounting portion between the cloth and the floor surface of the main space, and at least a portion of the end of the cloth is fixed to the floor surface.

[0039] (8) An aircraft described in any one of (1) to (7) above, wherein the partition body maintains its flame retardant or non-flammable properties for a period of time required for the evacuation of the maximum number of passengers in the event of a fire.

[0040] (9) An aircraft described in any one of (1) to (7) above, wherein the partition body maintains flame retardancy or non-flammability against the fire caused by the ignition of the equipment for a predetermined period of time or more.

[0041] (10) In the aircraft described in (9) above, the specified time is the time required for the maximum number of passengers to evacuate.

[0042] (11) A design method for a partition body used in an aircraft, comprising the steps of: calculating an evacuation time for occupants corresponding to the capacity of the aircraft based on the evacuation route of the aircraft; identifying the fire power caused by an ignition of equipment installed in the aircraft if the equipment ignites; and selecting a non-metallic material that maintains its flame retardancy or non-flammability against the fire power for at least the evacuation time, wherein the partition body divides the internal space of the aircraft into a boarding section where the occupants board and a boarding section in which the equipment is installed.

[0043] (12) A partition body for use in an aircraft, the partition body being designed by the design method described in (11) above. Of course, this is not the case.

[0044] Finally, although various embodiments of the present invention have been described, these are presented as examples and are not intended to limit the scope of the invention. The novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. The embodiments and their modifications are included within the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0045] 1: Flying object 10: Main unit 11: Boarding gate 12: Seat 13:Equipment 15: Bulkhead 20: Rotor 100: Main space 106: Step 120: Boarding section 130: Mounting section 132: Mounting section 151: Bulkhead 152: Bulkhead 153: Bulkhead 161: Partition 161c: Cloth 161f: Support part 162: Partition 162c: cloth 162s: Hanging part

Claims

1. An air vehicle, A main space and a partition body are provided, The main space includes a boarding section for passengers to board and a loading section for carrying equipment, The partition is made of a non-metallic flame-retardant or non-combustible material and separates the boarding section from the mounting section. Flying vehicle.

2. 2. The flying object according to claim 1, The partition can be attached and detached without using tools. Flying vehicle.

3. 2. The flying object according to claim 1, The partition is a partition wall fixed to at least the floor surface of the main space and the ceiling of the main space. Flying vehicle.

4. 4. The flying object according to claim 3, The partition has a plane perpendicular to the floor surface. Flying vehicle.

5. 2. The flying object according to claim 1, The partition includes a flame-retardant fabric that covers the device. Flying vehicle.

6. 6. The flying object according to claim 5, The partition body includes a support portion, the support portion fixes the cloth and forms the mounting portion between the cloth and a floor surface of the main space; At least a portion of the edge of the cloth is fixed to the floor surface. Flying vehicle.

7. 6. The flying object according to claim 5, The partition body includes a hanging portion, The hanging portion suspends a portion other than the end of the fabric from the ceiling of the main space to form the mounting portion between the fabric and a floor surface of the main space, At least a portion of the edge of the cloth is fixed to the floor surface. Flying vehicle.

8. 2. The flying object according to claim 1, The partition body maintains its flame retardancy or non-flammability for a period of time required for the evacuation of the full number of passengers in the vehicle if the equipment catches fire. Flying vehicle.

9. 2. The flying object according to claim 1, When the device catches fire, the partition maintains flame retardancy or non-flammability against the fire caused by the ignition for a predetermined period of time or more. Flying vehicle.

10. 10. The flying object according to claim 9, The predetermined time is the time required to evacuate the maximum number of passengers. Flying vehicle.

11. A method for designing a partition body for use in an aircraft, comprising the steps of: A step of calculating an evacuation time for passengers according to a capacity of the aircraft based on an evacuation route of the aircraft; A step of identifying a fire power caused by a fire when a device mounted on the flying object catches fire; selecting a non-metallic material that maintains its flame retardancy or non-combustibility against the fire for at least the evacuation time; Equipped with The partition divides the internal space of the aircraft into a boarding section in which the passenger boards and a loading section in which the equipment is mounted. Design method.

12. A partition body for use in an aircraft, comprising: A device designed by the design method according to claim 11 Partition body.

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