KR20160134152A

KR20160134152A - The automatic altitude control system of aircraft

Info

Publication number: KR20160134152A
Application number: KR1020150067759A
Authority: KR
Inventors: 이정용
Original assignee: 이정용
Priority date: 2015-05-15
Filing date: 2015-05-15
Publication date: 2016-11-23

Abstract

The present invention relates to an automatic altitude control apparatus for an aircraft, in which a flexible helium air bag is formed inside an aircraft, a helium air compressor is formed, helium air is introduced into a helium air bag by a helium air compressor, Is opened and closed and is sprayed.
A switch for forming an altimeter on one side of an airship and outputting an electric signal in conjunction with the operation of a switch for lighting an altitude regulating device such as an airship; An altimeter as a means for sensing a relative altitude or an absolute altitude of an airship or the like and outputting it as an electric signal and an altimeter which operates in accordance with a signal outputted from the switch and is the relative altitude or absolute altitude sensing means,
The altitude and the relative altitude of the altimeter's airship or the like, and then the helium gas is compressed and injected until the absolute altitude or the relative altitude, Control means for outputting a signal for controlling compression and injection of the apparatus and helium gas compression for controlling the compression and injection of the helium gas compression and the injection device in accordance with signals outputted from the control means, As shown in FIG.

Description

[0001] The present invention relates to an automatic altitude control system for an aircraft,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic altitude regulator for an aircraft, and more particularly to an automatic altitude regulator for an airship using helium.

Background of the Invention [0002] As a background of the present invention, there is a B1 Nav which uses a GPS altimeter, a pneumatic altimeter pneumatic system and a GPS system as altimeters, and helium gas which is compressed or injected into the airship and injected or compressed is injected and compressed A compression injection device of helium gas in which a bladder-type air bag is formed becomes a background technique.

altimeter

[altimeter, altimeter ]

summary

It is an instrument to measure elevation above sea level.

altimeter

There are two types of altitude: absolute altitude and altitude. At an absolute altitude with respect to the sea surface, an aneroid altimeter using a change in atmospheric pressure according to altitude is used. This altimeter has an error of about 50 m from 10,000 m. The earth altimeter is a gauge (instrument) that measures the time it takes to launch a radio pulse from an aircraft, etc., and then travel back and forth between the aircraft and the ground surface.

altimeter

It is a meter that detects the expansion and contraction of the diaphragm according to the atmospheric pressure and amplifies and displays the altitude by using the fact that the atmospheric pressure and altitude (sea level) are almost proportional to each other .

altimeter

[altimeter, altimeter]

The altimeter is extremely important in aircraft control, and is divided into an absolute altimeter and a relative altimeter in a highly conceptual sense . Absolute altitude is the height from a constant reference plane, a few meters above sea level, with a pneumatic altimeter. This is taking advantage of the fact that atmospheric pressure decreases with elevation. Relative altitude is the height from the ground below the aircraft, and there are an acoustic altimeter, an optical altimeter, and an electric altimeter. The acoustic altimeter measures altitude as the time it takes for the sound waves from the aircraft to reflect back to the ground and arrive at the aircraft again. Optical is a method that can take a long baseline like an airship. It is a way to know the altitude by directing the bottom from one end, aiming with the other end, and reading the angle. The electric altimeter utilizes the conversion of the capacitance between two metal plates placed on the aircraft according to the altitude from the surface, and can be used in the range of altitude (30m or less) close to the ground.

How reliable is the GPS altimeter?

We have confirmed the altitude of the takeoff field and the acquired altitude in flight with the Asen 755 GPS, which was purchased as a substitute for the bicycle speedometer from the 6th time.

Until then, it was hard to trust how accurate the altitude of the GPS altimeter was.

We have been verifying through comparative data from time to time.

For example, we already know the height of Daaamsan.

This is the way to verify the altitude.

In other cases, such as Daeamsang, it is difficult to know the exact altitude. In the case of the one-way settlement, we have obtained map data showing contour lines and confirmed the altitude using contour lines.

As a result, the GPS altitude is quite accurate.

It was then that the GPS altimeter felt much more reliable than I thought it would be since I started climbing with GPS

In addition, since the Plymaster B1 Nav, which is a pneumatic system and a GPS system, is purchased and used at the same time.

The pneumatic altimeter is very inaccurate if it does not correct the error more than the GPS which measures the altitude with the satellite signal. In case of the GPS type altimeter, it receives the signal from at least 4 satellites and displays the position, bearing and altitude. Is reduced.

And GPS satellites are not just sitting in one place.

It can be seen that the altitude value is constantly changing even if it is measured in one place.

The pneumatic altimeter calculates the air pressure based on the atmospheric pressure of the mean sea level

Strictly speaking, it might be more appropriate to say that the barometer displays the pressure difference due to the height difference rather than the altimeter.

The atmospheric pressure changes from time to time even at the same place due to various factors such as temperature, humidity and wind.

In fact, it may not be easy to measure the altitude with a pneumatic altimeter.

Even in the same area, 100-200 meters swung back and forth depending on the pressure change.

It means that there is a lot of error.

In order to compensate for this, there may be a way to adjust the altitude of the area, such as the takeoff or landing area, which is already known. However, in the case of B1 Nav, there is a way to get the altitude from the GPS before take- have.

If you calibrate the altitude in this way, both machines are quite accurate.

Where there is no problem in receiving GPS signals in open fields

Of course, GPS altimeter that receives GPS signals and displays altitude is much more accurate.

But when you enter a shaded area like a valley where you can not receive satellite signals properly

A GPS-based altimeter bounces signals. The altitude is 50-100 meters wide.

You can feel that GPS altitude is very inaccurate.

On the other hand, in the case of B1 Nav ,

* If you have calibrated the altitude error of the pneumatic formula, it will give a fairly accurate figure even in the valley that does not receive the satellite signal.

If you are a parachutist like us, you will always be able to receive satellite signals

Because the sky is open like an open space, the GPS-based altimeter can be seen to be quite reliable.

Below is the time when I climbed Mount Palgongsan

It's a picture of the difference between the altitude and the actual altitude of the two machines.

I think that it expresses accuracy of GPS altimeter simply.

For reference, the exact height of enclosed Palgongsan is 1,167m.

Since helium is sensitive to temperature, its volume expands at high temperatures and its volume and buoyancy decreases at low temperatures. Therefore, when decorating with helium balloons or making bouquet bouquets, they should be used avoiding sudden temperature changes.

A problem to be solved by the present invention is to maintain the altitude of an airship at a constant level in an airship-type aircraft.

A solution to the problem of the present invention is a B1 Nav which uses a GPS altimeter, a pneumatic altimeter pneumatic system and a GPS system as an altimeter, and helium gas which is compressed or injected into the airship and injected or compressed is injected and compressed in the air bag A compressed jet device for helium gas in which a bladder type air bag is formed becomes a solution means.

The effect of the present invention is that the airship can be stopped or flowed at a constant altitude even at low altitudes from the ground, and the flight altitude of the airship becomes unstable due to the change of air pressure at high altitude, .

1 is a block diagram of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, in which: FIG. 1 is a block diagram of the present invention in which a flexible helium air bag is formed inside an aircraft, Wherein helium air is injected into the air bag, and the valve is opened and closed by a servomotor or the like so as to be sprayed.

A switch for forming an altimeter on one side of an airship and outputting an electric signal in conjunction with the operation of a switch for lighting an altitude regulating device such as an airship; An altimeter as a means for sensing a relative altitude or an absolute altitude of an airship or the like and outputting it as an electric signal and an altimeter which operates according to a signal outputted from the switch and is the relative altitude or absolute altitude sensing means,

The altitude and the relative altitude of the altimeter's airship or the like, and then the helium gas is compressed and injected until the absolute altitude or the relative altitude, Control means for outputting a signal for controlling compression and injection of the apparatus and helium gas compression for controlling the compression and injection of the helium gas compression and the injection device in accordance with signals outputted from the control means, As shown in FIG.

1: Absolute altimeter and relative altimeter
2: Reference absolute altimeter and reference relative altimeter

Claims

A helium air bag is formed inside the aircraft and a helium air compressor is formed, and helium air is injected into the helium air bag by the helium air compressor, and the injection is performed by opening and closing the valve by a servomotor or the like. For an aircraft to be adjusted;
An altimeter, which is a means for forming an altimeter on one side of an airship and detecting a relative altitude or an absolute altitude of an airship and outputting it as an electric signal, and an altimeter for operating the altimeter Wow,
The altitude and the relative altitude of the altimeter's airship or the like, and then the helium gas is compressed and injected until the absolute altitude or the relative altitude, Control means for outputting a signal for controlling compression and injection of the apparatus and helium gas compression for controlling the compression and injection of the helium gas compression and the injection device in accordance with signals outputted from the control means, And an adjusting means for adjusting the altitude of the aircraft.

A helium air bag is formed inside the aircraft and a helium air compressor is formed, and helium air is injected into the helium air bag by the helium air compressor, and the injection is performed by opening and closing the valve by a servomotor or the like. For an aircraft to be adjusted;
A switch for forming an altimeter on one side of an airship and outputting an electric signal in conjunction with the operation of a switch for lighting an altitude regulating device such as an airship; An altimeter as a means for sensing a relative altitude or an absolute altitude of an airship or the like and outputting it as an electric signal and an altimeter which operates in accordance with a signal outputted from the switch and is the relative altitude or absolute altitude sensing means,
The altitude and the relative altitude of the altimeter's airship or the like, and then the helium gas is compressed and injected until the absolute altitude or the relative altitude, Control means for outputting a signal for controlling compression and injection of the apparatus and helium gas compression for controlling the compression and injection of the helium gas compression and the injection device in accordance with signals outputted from the control means, And an adjusting means for adjusting the altitude of the aircraft.

The altimeter according to any one of claims 1 to 2, wherein an absolute altimeter or relative altimeter can be selectively input, and an absolute altitude or a relative altimeter as a reference is selectively inputted according to the altimeter. Altitude regulation device.

A control device for controlling the compression and injection of helium gas compression and injection device according to any one of claims 1 to 2, wherein a heating device for helium gas in the air bag by hot wire is added to the injection device A control means for controlling the helium gas compression for controlling the compression and injection of the jetting device or the heating of the heating wire, the compression and injection of the jetting device and the heating of the heating wire, operating according to the signal outputted from the control means Wherein the automatic altitude control device comprises: