JPH058796A - Flying body - Google Patents

Abstract

PURPOSE:To improve in durability of elements and to reduce aerodynamic drag by providing radio permeable materials at least at the lower portion of the outer wall of a main body the inside of which is filled with gas for floating and the elements for receiving microwaves as an energy source in the main body. CONSTITUTION:A flying body 10 is filled with gas 12 for floating inside the main body. In this instance, Rectennas 13 as energy receiving elements are disposed on the ceiling portion inside the main body. An envelope 11 constituting the outer wall of the main body is made from electric permeable materials 14 at least its lower surface. Thus, maicrowaves may be satisfactorily received by means of the Rectennas 13 so as to eliminate troubles to transmit maicrowaves. For electrical wave permeable materials 14, for example, coated clothes or plastic films are used. Since there is no Rectenna 13 or the like on the outer surface of the envelope 13, aerodynamic drag is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aircraft, for example,
The unmanned aerial vehicle is retained near the altitude line 20000M where the jet airflow is generally stable and does not hinder regular flights, etc., and is equipped with a wireless communication device transponder, etc.) for use as a communication satellite or broadcasting satellite. The present invention relates to an air vehicle applied to a stratospheric wireless relay system.

[0002]

2. Description of the Related Art An important point of the above-mentioned stratospheric wireless relay system is that it can stay at a fixed value against an air flow at an altitude of 20000 M (meters). A microwave beam that is stronger than the ground is irradiated to the sky, and the rectenna 33, which is a power receiving element, receives this and obtains electric energy.

Conventionally, an air vehicle applied to the above system has a LTA (Li
ghter Than Air) Aircraft (hereinafter referred to as "LTA"). In this aircraft, as shown in FIG. 3, the energy receiving element (hereinafter referred to as “rectenna”) 33 was attached to the outer wall of the envelope (outer wall) 31. When the LTA is used as the air vehicle, the rectenna is usually mounted outside the LAT outer wall (envelope).

[0004]

However, the above-mentioned conventional example has the following drawbacks. That is,
This means that (1) the rectenna is exposed to severe environmental conditions at an altitude of 20000M, so its durability deteriorates, and (2) the aerodynamic resistance increases due to the rectifier being mounted.

The present invention has been made in view of the above-mentioned drawbacks of the conventional example, and an object of the present invention is to extend the durability of the rectenna and prevent an increase in aerodynamic resistance of the flying body itself. The point is to provide an air vehicle with a configuration.

[0006]

[Means for Solving the Problems]
In order to achieve the object, the flying body according to the present invention is a flying body in which a gas body for floating is filled in the main body and floats by using a microwave as an energy source. And a device for receiving microwaves is installed inside the main body.

[0007]

With this structure, microwaves are satisfactorily transmitted to the element installed inside the main body through the radio wave permeable substance of the main body, and the element for receiving microwaves is not affected by the external environment. It enables good flight with little air resistance.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a side sectional view showing a first embodiment of an aircraft according to the present invention. In the figure, the air vehicle 10 is
It has an existing shape almost similar to the external appearance of FIG. 3, and has a configuration in which a gas body 12 is filled inside the main body.

In the above structure, the rectifier 13 is installed at the top of the main body, and its surface comes into contact with the gas body 12. However, by using an inert gas for the gas body 12, it is safe. At the same time, there is no problem in the durability of the rectenna 13 itself, and the durability is remarkably improved as compared with the conventional example in which it is directly exposed to the outside air.

The envelope 11 has at least its lower surface made of a radio wave transmitting substance 14, and has a rectenna 13
Has a configuration that easily receives microwaves, and obstructs microwave transmission.

As an example of the radio wave transmitting substance 14, there is a coated cloth, a plastic film or the like.

Further, since there is no obstacle such as a rectifier on the outer surface of the envelope 11, aerodynamic resistance can be reduced.

Next, a second embodiment will be described.

FIG. 2 is a side sectional view showing a second embodiment of an aircraft according to the present invention. Also in the second embodiment, FIG.
Similarly to the first embodiment shown by, the rectifier 23 is installed inside the main body of the flying body 20, and the radio wave transmitting substance 24 is arranged on the lower surface of the main body. The second embodiment is an implementation method in the case where the gas body 22 has a microwave absorption spectrum region, and is characterized in that the rectenna 23 is installed on the floor surface of the envelope 21.

In the second embodiment, as in the first embodiment, there is no layer of the gas body in front of the power receiving surface of the rectifier. Therefore, even if the gas body 22 has a microwave absorption spectrum, there is a problem. You can get energy without.

Now, in the above-mentioned first and second embodiments,
Although the rectifier is arranged on the top or the floor inside the main body, the present invention is not limited to this, and it is sufficient if the microwave can be favorably received inside the main body, so the rectifier is arranged on the side surface inside the main body. May be. In this case, although there is a positional relationship with the radio wave permeable substance, the microwave power can be received on the side surface by providing the reflection surface.

[0018]

As described above, according to the present invention,
The durability of the element that receives microwaves can be improved, and the aerodynamic resistance applied to flight can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of an aircraft according to the present invention.

FIG. 2 is a side sectional view showing a second embodiment of an aircraft according to the present invention.

FIG. 3 is a side sectional view showing the structure of a conventional flying body.

[Explanation of symbols]

 10,20 Aircraft 11,21,31 Envelope 12,22 Gas body 13,23,33 Rectenna 14,24 Radio wave permeable substance

Claims (1)

Claim: What is claimed is: 1. A flying body having a main body filled with a floating gas body and floating by using microwaves as an energy source, wherein at least a lower portion of an outer wall of the main body is provided with a radio wave permeable substance. An aircraft that has an element for receiving microwaves installed inside the main body.