JP2024100738A - Method for determining cargo mounting position on flying object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for determining a cargo mounting position on a flying object which is capable of enhancing safety and controllability of flight of the flying object.

SOLUTION: The method for determining a cargo mounting position on a flying object according to the present invention comprises: a center-of-gravity detecting step of detecting a center of gravity of a cargo 10; a center-of-gravity displaying step of performing center-of-gravity display which indicates a position of the center of gravity of the cargo 10 on a surface of the cargo 10; and a position determination step of determining the cargo 10 mounting position, referring to the center-of-gravity display, so that the center of gravity of the cargo 10 including a center of gravity of the flying object 100, is positioned in a predetermined range where flight of the flying object 100 is stable.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a method for determining the loading position of cargo on an aircraft.

Transportation of luggage using aerial vehicles has been widely practiced in the past. In recent years, the use of relatively small unmanned aerial vehicles (so-called drones, etc.) has become increasingly widespread, and the idea of loading luggage onto such unmanned aerial vehicles and transporting the luggage has been considered (see, for example, Patent Document 1). The market for transporting luggage using unmanned aerial vehicles is expected to expand rapidly, and unmanned aerial vehicle manufacturers and venture companies around the world are competing fiercely in development.

JP 2017-105242 A

By the way, aircraft for transporting cargo are required to transport a wide variety of cargo in response to user requests, etc. For this reason, if cargo is loaded onto an aircraft carelessly, the weight balance of the aircraft may be disrupted, compromising flight safety and controllability.

Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a method for determining the loading position of cargo on an aircraft that can improve the safety and controllability of the aircraft's flight.

The method for determining the loading position of a load on an aircraft of the present invention includes a center of gravity detection step for detecting the center of gravity of the load, a center of gravity display step for displaying the center of gravity of the load on the surface of the load, and a position determination step for determining the loading position of the load by referring to the center of gravity display so that the center of gravity of the load is located within a predetermined range that includes the center of gravity of the aircraft and ensures stable flight of the aircraft.

There are various types of flying objects, but regardless of the type of flying object, it is important that the center of gravity is in an appropriate position from the perspective of flight safety and controllability. The center of gravity of an flying object is generally set to an optimal position for the flying object to fly stably and safely, but when the flying object is carrying a load, the position of the center of gravity fluctuates depending on the position and weight of the load. For example, a multicopter-type drone equipped with multiple rotors (rotors or propellers) can achieve continuous flight even if the center of gravity is not in an optimal position by adjusting the thrust generated by each rotor, but if the center of gravity is biased, the load will be concentrated on a specific rotor or the power source (motor, etc.) of that rotor, which may cause malfunctions or reduced controllability.

The method of the present invention for determining the loading position of a load on an aircraft includes a center of gravity detection step for detecting the center of gravity of the load, a center of gravity display step for displaying the center of gravity on the surface of the load, and a position determination step for determining the loading position of the load by referring to the center of gravity display so that the center of gravity of the load is located within a predetermined range. This makes it possible to reduce bias in the position of the center of gravity caused by loading the load, resulting in a method for determining the loading position of a load on an aircraft that can increase the safety and controllability of the flight of the aircraft.

4 is a flowchart of a method for determining a loading position of luggage on an aircraft according to the first embodiment. FIG. 2 is a perspective view of a piece of luggage 10 according to the first embodiment. 1 is a diagram shown for explaining an aircraft 100 in embodiment 1. FIG. FIG. 2 is a perspective view of a mounting space 112 in the first embodiment. FIG. 11 is a perspective view for explaining a center of gravity display step S20 in the first embodiment. 10 is a diagram for explaining a position determination step S30 in the first embodiment. FIG. 11 is a flowchart of a method for determining a loading position of a cargo on an aircraft according to a second embodiment. FIG. 11 is a perspective view of a luggage storage container 20 according to a second embodiment. FIG. 11 is a diagram for explaining a position determination step S30a in the second embodiment. FIG. 11 is a diagram for explaining an aircraft 102 according to a modified example. FIG. 11 is a diagram for explaining an aircraft 104 according to a modified example.

The method of determining the loading position of cargo on an aircraft of the present invention will be described below based on the embodiment shown in the figures. In each embodiment described below, components having the exact same or substantially the same functions will use the same reference numerals in each embodiment even if their shapes are slightly different, and descriptions already given may be omitted. Note that each embodiment described below does not limit the invention related to the claims. Furthermore, not all of the elements and combinations thereof described in each embodiment are necessarily essential to the solution of the present invention.

[Embodiment 1]
FIG. 1 is a flowchart of a method for determining a loading position of a cargo on an aircraft according to the first embodiment.
FIG. 2 is a perspective view of the luggage 10 in the first embodiment.
FIG. 3 is a diagram for explaining the aircraft 100 in the first embodiment. FIG. 3(a) is a perspective view of the aircraft 100, FIG. 3(b) is a front view of the aircraft 100, FIG. 3(c) is a plan view of the aircraft 100, and FIG. 3(d) is a left side view of the aircraft 100. In FIG. 3(b) to FIG. 3(d), the shape of the mounting space 112 inside the fuselage 110 is shown by a dashed line. In FIG. 3(b) to FIG. 3(d), the position of the center of gravity of the aircraft 100 is shown by the symbol C. These are the same in FIG. 6(b) to FIG. 6(d) and FIG. 9(a) to FIG. 9(c) described later.
Fig. 4 is a perspective view of the mounting space 112 in the first embodiment. In Fig. 4, the three inner walls closer to the viewpoint are shown transparently. Also, the mark M1 (described later) and the auxiliary line L1 (described later) shown on the inner walls shown transparently are shown by dashed lines. This is the same in Fig. 6(a).

FIG. 5 is a perspective view shown for explaining the center of gravity display step S20 in the first embodiment.
Fig. 6 is a diagram for explaining the position determination step S30 in embodiment 1. Fig. 6(a) is a perspective view of the loading space 112 and the luggage 10 in the position determination step S30, Fig. 6(b) is a front view of the aircraft 100 carrying the luggage 10, Fig. 6(c) is a plan view of the aircraft 100 carrying the luggage 10, and Fig. 6(d) is a left side view of the aircraft 100 carrying the luggage 10.

As shown in FIG. 1, the method for determining the loading position of luggage on an aircraft according to the first embodiment includes a center of gravity detection step S10, a center of gravity display step S20, and a position determination step S30. Below, the luggage 10 and the aircraft 100 according to the first embodiment are described, and then each step is described.

As shown in FIG. 2, the luggage 10 is a rectangular box 12 with contents (not shown) fixed inside. The material and configuration of the box 12 are not particularly limited, but it is preferable to use a box made of a lightweight and durable material such as cardboard or plastic.

As shown in FIG. 3, the flying object 100 comprises a fuselage 110, four fixed wings 120, and two rotors 130 arranged per fixed wing 120. The flying object 100 is capable of horizontal flight using the fixed wings 120, and vertical takeoff and landing using the rotors 130. Inside the fuselage 110, there is a loading space 112 for loading cargo 10. Note that a hatch or the like for accessing the loading space 112 is a general matter and will not be described or illustrated in detail, but for example, the rear or top of the loading space 112 can be structured to be openable and closable.

The flying object 100 has a mounting position indication that indicates the position of the center of gravity C of the flying object 100. Specifically, a mark M1 indicating the position of the center of gravity C of the flying object 100 is indicated on the inner wall of the mounting space 112 (see FIG. 4). One mark M1 is indicated on each of the six inner walls that make up the mounting space 112, but there may be inner walls on which the mark M1 is not indicated. It is preferable that an auxiliary line L1 connecting each of the marks M1 is also indicated on the inner wall of the mounting space 112. The mounting position indication may also be indicated on the outside of the mounting space 112 (such as on the outer surface of the fuselage 110 or near the access to the mounting space 112).

The mounting position display may indicate a predetermined range including the center of gravity C of the aircraft 100 and where the flight of the aircraft 100 is stable. In this case, the mounting position display may be, for example, a circular display centered on the center of gravity C or a wide linear display. In this specification, the "predetermined range including the center of gravity of the aircraft and where the flight of the aircraft is stable" varies depending on the type, weight, size, shape, etc. of the aircraft, but may be, for example, a spherical range centered on the center of gravity of the aircraft and having a diameter of 10% of the total length of the aircraft. Note that when the mounting position display indicates the above-mentioned predetermined range, a display indicating a more desirable range (a display indicating a range narrower than the predetermined range) or a display indicating the position of the center of gravity C of the aircraft 100 may be present simultaneously with the display indicating the predetermined range.

The center of gravity detection step S10 is a step for detecting the center of gravity of the luggage 10. The center of gravity of the luggage 10 can be detected, for example, by a three-dimensional center of gravity detection device using an acceleration sensor (see, for example, International Publication No. 2013/061989). The center of gravity of the luggage 10 can also be detected by a classic method in which the luggage 10 is suspended at a first point and allowed to stand still, and then suspended at a second point different from the first point and allowed to stand still.

The center of gravity display step S20 is a step of displaying the center of gravity of the luggage 10 on the surface of the luggage 10, as shown in FIG. 5. In the center of gravity display step S20, as the center of gravity display, a mark M2 indicating the position of the center of gravity of the luggage 10 is displayed on at least three of the faces of the box 12 that are mutually perpendicular. In the center of gravity display step S20, the mark M2 indicating the position of the center of gravity of the luggage 10 may be displayed on all faces (six faces) of the box 12. Note that in the center of gravity display step S20, it is preferable to also display auxiliary lines L2 connecting the marks M2.

The mark M2 indicating the position of the center of gravity of the luggage 10 may be a dot as shown in FIG. 5, or may be an intersection of lines. The mark M2 may be written in writing or printed, may be a mark attached with adhesive or the like, or may be something like a push pin. Alternatively, multiple tapes, strings, rubber bands, etc. may be wrapped around the luggage 10, and the intersection of these may be used as the mark M2 indicating the position of the center of gravity of the luggage 10.

The center of gravity display in the center of gravity display step S20 may be performed by a human or by a device. In addition, the center of gravity detection step S10 and the center of gravity display step S20 may be performed automatically by a single device.

The position determination step S30 is a step of determining the loading position of the luggage 10 by referring to the center of gravity display so that the center of gravity of the luggage 10 is located within a predetermined range that includes the center of gravity C of the flying body 100 and ensures stable flight of the flying body 100, as shown in FIG. 6. In the position determination step S30, it is preferable to determine the loading position of the luggage 10 so that the center of gravity C of the flying body 100 and the center of gravity of the luggage 10 coincide with each other.

The flying object 100 described in the first embodiment may be a manned or unmanned aircraft. In the case of a manned aircraft, there are factors that vary from case to case, such as the number of passengers (crew or passengers), their physiques, and seating positions, and that are difficult to regulate or regulate. For this reason, it is considered relatively difficult to make the center of gravity C of the flying object 100 coincide with the center of gravity of the baggage 10 in a manned aircraft. On the other hand, in the case of an unmanned aircraft, the above-mentioned factors related to the passengers can be eliminated, so it is considered relatively easy to increase the degree of coincidence between the center of gravity C of the flying object 100 and the center of gravity of the baggage 10. From the above, the method for determining the loading position of the baggage on the flying object according to the first embodiment (particularly, when the loading position of the baggage 10 is determined so that the center of gravity C of the flying object 100 and the center of gravity of the baggage 10 coincide with each other) can be particularly preferably implemented when the flying object 100 is an unmanned aircraft.

In the first embodiment, the loading position of the luggage 10 is determined by referring to a mark M1 (loading position mark) indicating the position of the center of gravity C of the aircraft 100 and a mark M2 (center of gravity mark) indicating the position of the center of gravity of the luggage 10, which are present on the inner wall of the loading space 112. The auxiliary lines L1 and L2 can also be used to determine the loading position of the luggage 10. The determination of the loading position in the position determination step S30 may be performed by a human or by a device.

The height position of the luggage 10 can be adjusted, for example, by inserting a spacer S under the luggage 10. It is preferable to use a spacer S that is as light as possible so as to minimize the effect on the center of gravity. In addition, if a part or all of the floor surface of the loading space 112 is movable up and down, the height position of the luggage 10 can also be adjusted by moving the floor surface up and down. The luggage 10 may be loaded by a person or by a device. There are no particular limitations on the method of fixing the luggage 10 to the flying object 100 after the position is determined, and it can be performed using metal fittings, belts, etc. After the luggage 10 is fixed, the luggage 10 can be transported by flying the flying object 100.

The "method of fixing the cargo 10 to the flying object 100 after the position is determined" described above can also be considered as a "fixing step of fixing the cargo 10 to the mounting position determined in the position determination step S30." In the above description, metal fittings and belts are given as examples of fixing tools, but for example, strings, hook-and-loop fasteners, etc. can also be used.

In addition, "fixing" in this specification is not limited to placing the luggage (including spacers, if necessary) on the bottom of the mounting space, but also includes placing it on a wall or ceiling, or holding or suspending it with luggage mounting equipment (hooks, hanging hardware, etc.) connected to the wall or ceiling. Furthermore, the luggage may be fixed by filling the excess space in the mounting space with stuffing. It is preferable that the stuffing is as light and easy to handle as possible, and examples of such stuffing include resin bags filled with air, prefabricated or hollow-molded support members, and cushioning materials made of paper or foamed resin.

The center of gravity detection step S10 and the center of gravity display step S20 can be performed outside the aircraft 100, and the position determination step S30 can be performed when the luggage 10 is loaded onto the aircraft 100. In addition, if the aircraft 100 is equipped with a device capable of detecting the center of gravity of the luggage 10 within the loading space 112 and a device that displays the center of gravity on the luggage 10, the steps from the center of gravity detection step S10 to the position determination step S30 can be performed with the luggage 10 loaded onto the aircraft 10.

The method for determining the loading position of a load on an aircraft according to embodiment 1 includes the above-mentioned center of gravity detection step S10, center of gravity display step S20, and position determination step S30, and therefore it is possible to reduce deviation in the position of the center of gravity caused by loading the load 10, resulting in a method for determining the loading position of a load on an aircraft that can increase the safety and controllability of the flight of the aircraft 100.

[Embodiment 2]
FIG. 7 is a flowchart of a method for determining a loading position of a cargo on an aircraft according to the second embodiment.
Fig. 8 is a perspective view of the luggage storage container 20 in the second embodiment. Fig. 8(a) is a perspective view of the luggage storage container 20 as seen from the outside, and Fig. 8(b) is a perspective view showing the interior of the luggage storage container 20 in the positioning step S30a. In Fig. 8(b), the three faces of the luggage storage container 20 that are closer to the viewpoint are shown in a see-through manner. Also, the mark M1a (described later) and the auxiliary line L1a (described later) that are shown on the faces that are shown in a see-through manner are shown by dashed lines.
9 is a diagram for explaining the position determination step S30a in the second embodiment. FIG. 9(a) is a front view of the aircraft 100 carrying the luggage storage container 20 and the luggage 10, FIG. 9(b) is a plan view of the aircraft 100 carrying the luggage storage container 20 and the luggage 10, FIG. 9(c) is a left side view of the aircraft 100 carrying the luggage storage container 20 and the luggage 10, and FIG. 9(d) is a perspective view showing the luggage storage container 20 being carried in the loading space 112 of the aircraft 100 (fuselage 110). In FIG. 9(d), the outline of the fuselage 110 is shown by an elliptical dashed line. The outline of the luggage storage container 20 in the loading space 112 is also shown by a dashed line.

The method for determining the loading position of luggage on an aircraft according to the second embodiment is basically the same as the method for determining the loading position of luggage on an aircraft according to the first embodiment, but the position determination step differs from that of the method for determining the loading position of luggage on an aircraft according to the first embodiment. The method for determining the loading position of luggage on an aircraft according to the second embodiment will be described below.

The method for determining the loading position of luggage on an aircraft according to the second embodiment includes a center of gravity detection step S10, a center of gravity display step S20, and a position determination step S30a, as shown in FIG. 7. The center of gravity detection step S10 and the center of gravity display step S20 are similar to the steps with the same names in the first embodiment, and therefore their explanations are omitted. Furthermore, the luggage 10 and the aircraft 100 are similar to the steps with the same names in the first embodiment, and therefore their explanations are omitted.

The positioning step S30a is similar to the positioning step S30 in the first embodiment in that "the loading position of the luggage 10 is determined by referring to the center of gravity display so that the center of gravity of the luggage 10 is located within a predetermined range including the center of gravity of the aircraft 100 and where the flight of the aircraft 100 is stable." On the other hand, the positioning step S30a uses the luggage storage container 20 that is arranged in a predetermined arrangement state when it is loaded onto the aircraft 100 (see Figures 8(a) and 8(b)). In the positioning step S30a, the luggage 10 is fixed inside the luggage storage container 20 by referring to the center of gravity display so that the center of gravity of the luggage storage container 20 including the luggage 10 is located within a predetermined range when the luggage storage container 20 is loaded onto the aircraft 100 (see Figure 8(b)). After that, the luggage storage container 20 is loaded onto the aircraft 100 (see Figures 9(a) to 9(c)).

The luggage storage container 20 in the second embodiment is a box-shaped (rectangular) container that, when the lid is closed, has an external shape that is approximately the same as the internal shape (rectangular) of the loading space 112 in the aircraft 100 (see FIG. 9). Therefore, when loading the luggage storage container 20 onto the aircraft 100, if the direction and orientation of the luggage storage container 20 when loaded into the loading space 112 are determined, the luggage storage container 20 will be placed in a fixed arrangement. For this reason, the outer surface of the luggage storage container 20 may be marked with a notice, pattern, symbol, etc. indicating at least one of the direction and orientation of the luggage storage container 20 when loaded onto the aircraft 100. In addition, the loading direction and orientation may be displayed using an image or device (e.g., a barcode or IC chip) that cannot be recognized by humans as it is.

In this specification, "a luggage storage container that is arranged in a predetermined state when mounted on an aircraft" refers to a container that can store luggage inside and can be arranged so that at least one of the position and orientation is always in a predetermined state when mounted on an aircraft due to the relationship of the external shape, mounting parts, connection parts, etc.

The luggage storage container 20 has a storage position indicator that indicates a position or range that corresponds to the position of the center of gravity or a specified range of the aircraft 100 when the luggage storage container 20 is loaded onto the aircraft 100. Note that if there is no or only a minor shift in the center of gravity due to the presence of the luggage storage container 20, the "storage position indicator" can be provided at a position that coincides with the position of the center of gravity or the specified range of the aircraft 100 when the luggage storage container 20 is loaded onto the aircraft 100. The "storage position indicator" can also be provided at a position shifted from the position of the center of gravity or the specified range of the aircraft 100, taking into account the shift in the center of gravity due to the presence of the luggage storage container 20.

In the second embodiment, the fixed position of the luggage 10 inside the luggage storage container 20 is determined by referring to the mark M1a (storage position mark) indicating the position corresponding to the position of the center of gravity C of the flying object 100 and the mark M2 (center of gravity mark) indicating the position of the center of gravity of the luggage 10. The auxiliary lines L1a and L2 can also be used to determine the fixed position of the luggage 10. The determination of the fixed position of the luggage in the position determination step S30a may be performed by a human or by a device.

The height position of the luggage 10 can be adjusted, for example, by inserting a spacer S under the luggage 10. It is preferable to use a spacer S that is as light as possible so as to have less impact on the center of gravity. The luggage 10 can be secured by a person or by a device. There are no particular limitations on the method of securing the luggage 10, and it can be secured by metal fittings, belts, strings, hook-and-loop fasteners, etc. Furthermore, the luggage 10 can be secured by filling the excess space inside the luggage storage container 20 with stuffing. It is preferable that the stuffing is as light and easy to handle as possible, and examples of such stuffing include a resin bag filled with air, a prefabricated or hollow-molded support member, and a cushioning material made of paper or foamed resin.

After the luggage 10 is secured, the luggage storage container 20 is loaded into the loading space 112 of the aircraft 100, and if necessary, the luggage storage container 20 is secured to the aircraft 100 and the aircraft 100 is flown, thereby transporting the luggage 10. Note that in the second embodiment, since the position of the luggage 10 can be determined by loading the luggage storage container 20 containing the luggage 10 into the loading space 112 of the aircraft 100, there is no need for a loading position indication to be present on the aircraft 100.

The method for determining the loading position of luggage on an aircraft according to the second embodiment includes a center of gravity detection step S10, a center of gravity display step S20, and a position determination step S30a, although the position determination step is different from that of the method for determining the loading position of luggage on an aircraft according to the first embodiment. Therefore, the method for determining the loading position of luggage on an aircraft according to the second embodiment, like the method for determining the loading position of luggage on an aircraft according to the first embodiment, can reduce the bias in the position of the center of gravity caused by loading luggage 10, and as a result, it becomes a method for determining the loading position of luggage on an aircraft that can increase the safety and controllability of the flight of the aircraft 100.

In addition, in the method for determining the loading position of luggage on an aircraft according to the second embodiment, in the position determination step S30a, the luggage 10 is fixed inside the luggage storage container 20, which is arranged in a predetermined arrangement state when loaded onto the aircraft 100, by referring to the center of gravity indication so that the center of gravity of the luggage storage container 20 including the luggage 10 is located within a predetermined range when the luggage storage container 20 is loaded onto the aircraft 100, and then the luggage storage container 20 is loaded onto the aircraft 100. Therefore, according to the method for determining the loading position of luggage on an aircraft according to the second embodiment, it is possible to substantially determine the loading position of the luggage 10 outside the aircraft 100, thereby increasing the degree of freedom in implementing the method.

In addition, in the method for determining the loading position of luggage on an aircraft according to the second embodiment, the luggage storage container 20 has a storage position indicator that indicates a position or range that corresponds to the position or a predetermined range of the center of gravity C of the aircraft 100 when the luggage storage container 20 is loaded onto the aircraft 100. Therefore, according to the method for determining the loading position of luggage on an aircraft according to the second embodiment, it is possible to easily determine the fixed position of the luggage 10 by referring to the center of gravity indicator and the storage position indicator of the luggage 10.

The present invention has been described above based on the above embodiments, but the present invention is not limited to the above embodiments. It can be implemented in various ways without departing from the spirit of the invention, and for example, the following modifications are also possible.

(1) The positions, sizes, etc. of the various elements described in each of the above embodiments are merely examples and may be changed without impairing the effects of the present invention.
(2) The flying object 100 in each of the above embodiments is an example. The method of the present invention can be applied regardless of the type of flying object (whether it is a manned aircraft or an unmanned aircraft, a rotary wing aircraft or a fixed wing aircraft, etc.). FIG. 10 is a diagram shown to explain the flying object 102 in a modified example. FIG. 10(a) is a plan view of the flying object 102 (after the position determination step) carrying the baggage 10, and FIG. 10(b) is a left side view of the flying object 102 carrying the baggage 10. FIG. 11 is a diagram shown to explain the flying object 104 in a modified example. FIG. 11(a) is a plan view of the flying object 104 (after the position determination step) carrying the baggage 10, and FIG. 11(b) is a left side view of the flying object 104 carrying the baggage 10. For example, as shown in FIG. 10, the present invention can also be applied to the flying object 102 which is a multicopter type drone. Also, as shown in FIG. 11, the present invention can also be applied to the flying object 104 which is a fixed wing aircraft equipped with main wings and a tail.
(3) The loading position indication on the aircraft may be an LED or laser marker that emits light onto the luggage indicating the position of the aircraft's center of gravity or a specified range.
(4) The shapes of the luggage 10 in each of the above embodiments are merely examples, and the method of the present invention can be applied to luggage of any shape.
(5) In the above-mentioned second embodiment, the luggage storage container 20 is a box-shaped container whose external shape is substantially the same as the internal shape of the loading space 112 in the aircraft 100 when the lid is closed, but the present invention is not limited to this. The luggage storage container does not have to be box-shaped (rectangular parallelepiped). In addition, if there is a structure (e.g., a pin, a block, a bulkhead, etc.) that defines the position and orientation of the luggage storage container in the loading space of the aircraft, the luggage storage container only needs to have an external shape corresponding to the structure. In addition, if the luggage storage container is fixed to the aircraft in a predetermined state by a structure such as an attachment part or a connection part, the external shape of the luggage storage container is not particularly limited. An example of the above is a case where the luggage storage container is fixed to the aircraft using a first connection part provided at a specified position of the aircraft and a second connection part provided at a specified position of the luggage storage container and fixed to the first connection part by connecting to the first connection part from a specified direction.
(6) When the loading position of the luggage is determined outside the aircraft using a luggage storage container as in the above-mentioned second embodiment, the luggage can be placed inside the luggage storage container and the center of gravity measurement and movement of the luggage repeated (or the center of gravity measurement is performed while moving the luggage) to determine an appropriate fixing position of the luggage. The center of gravity measurement can be performed, for example, using a three-dimensional center of gravity detection device using an acceleration sensor. In this case, the center of gravity detection step and the center of gravity display step are not essential.

10...luggage, 12...box, 20...luggage storage container, 100...aircraft, 110...fuselage, 112...mounting space, 120...fixed wings, 130...rotor, C...center of gravity of aircraft, L1, L1a, L2...auxiliary lines, M1...mark indicating the position of the aircraft's center of gravity (mounting position indicator), M1a...mark indicating the position corresponding to the position of the aircraft's center of gravity (storage position indicator), M2...mark indicating the position of the luggage's center of gravity, S...spacer

Claims (7)

a center of gravity detection step for detecting a center of gravity of the luggage;
a center of gravity display step of displaying a center of gravity of the baggage on a surface of the baggage, the center of gravity display step being performed to indicate a position of the center of gravity of the baggage;
and a position determination step of determining the loading position of the luggage by referring to the center of gravity indication so that the center of gravity of the luggage includes the center of gravity of the aircraft and is located within a predetermined range in which the flight of the aircraft is stable. The method for determining the loading position of a load on an aircraft according to claim 1, characterized in that in the position determination step, the loading position of the load is determined so that the center of gravity of the aircraft coincides with the center of gravity of the load. The method for determining the loading position of a load on an aircraft according to claim 1 or 2, characterized in that the load is a rectangular box with its contents fixed inside. The method for determining the loading position of a load on an aircraft as described in claim 3, characterized in that in the center of gravity display step, a mark indicating the position of the center of gravity of the load is displayed on at least three mutually orthogonal faces of the box as the center of gravity display. The method for determining the loading position of a cargo on an aircraft according to claim 1 or 2, characterized in that the aircraft has a loading position indicator indicating the position of the center of gravity of the aircraft or the predetermined range. The method for determining the loading position of a luggage on an aircraft described in claim 1, characterized in that in the position determination step, the luggage is fixed inside a luggage storage container that is arranged in a predetermined position when the luggage storage container is loaded onto the aircraft, with reference to the center of gravity indication so that the center of gravity of the luggage storage container including the luggage is located within the predetermined range when the luggage storage container is loaded onto the aircraft, and then the luggage storage container is loaded onto the aircraft. The method for determining the loading position of luggage on an aircraft as described in claim 6, characterized in that the luggage storage container has a storage position indication that indicates the position of the center of gravity of the aircraft or a position or range corresponding to the specified range when the luggage storage container is loaded on the aircraft.

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