KR20160134404A - The automatic altitude control system of aircraft - Google Patents
The automatic altitude control system of aircraft Download PDFInfo
- Publication number
- KR20160134404A KR20160134404A KR1020150068405A KR20150068405A KR20160134404A KR 20160134404 A KR20160134404 A KR 20160134404A KR 1020150068405 A KR1020150068405 A KR 1020150068405A KR 20150068405 A KR20150068405 A KR 20150068405A KR 20160134404 A KR20160134404 A KR 20160134404A
- Authority
- KR
- South Korea
- Prior art keywords
- altimeter
- altitude
- airship
- signal
- helium
- Prior art date
Links
- 239000001307 helium Substances 0.000 claims abstract description 39
- 229910052734 helium Inorganic materials 0.000 claims abstract description 39
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract 6
- 238000012544 monitoring process Methods 0.000 abstract 4
- 238000005507 spraying Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/40—Balloons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/40—Balloons
- B64B1/44—Balloons adapted to maintain predetermined altitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/58—Arrangements or construction of gas-bags; Filling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Description
BACKGROUND OF THE
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 (7)
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 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.
A control unit that receives a signal from an absolute altitude or relative altitude detection means of an altimeter such as an airship and outputs a signal until the absolute altitude or the relative altitude, And means for operating according to a signal output from said control means
Helium gas for controlling the heating of the helium gas, a cathode for the power source of the Peltier element which is a thermoelectric element which is placed between the inside and the outside so that the temperature of the inside and outside of the helium air bag can be controlled, And an adjusting means for changing an anode of the aircraft.
A control unit that receives a signal from an absolute altitude or relative altitude detection means of an altimeter such as an airship and outputs a signal until the absolute altitude or the relative altitude, And means for operating according to a signal output from said control means
And an adjusting means for driving an engine or a motor of a vertical propeller in an up or down direction.
A control unit that receives a signal from an absolute altitude or relative altitude detection means of an altimeter such as an airship and outputs a signal until the absolute altitude or the relative altitude, And means for operating according to a signal output from said control means
And an adjusting means for driving the ion wind in an upward or downward direction in an upward or downward direction.
A control unit that receives a signal from an absolute altitude or relative altitude detection means of an altimeter such as an airship and outputs a signal until the absolute altitude or the relative altitude, Characterized in that the control means for causing the control means to be driven in the up or down direction to operate in accordance with the signal output in accordance with the control means is formed by a combination of any one of the first to sixth aspects. Altitude regulation device.
Priority Applications (1)
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KR1020150068405A KR20160134404A (en) | 2015-05-15 | 2015-05-15 | The automatic altitude control system of aircraft |
Applications Claiming Priority (1)
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KR1020150068405A KR20160134404A (en) | 2015-05-15 | 2015-05-15 | The automatic altitude control system of aircraft |
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KR20160134404A true KR20160134404A (en) | 2016-11-23 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111959727A (en) * | 2020-08-25 | 2020-11-20 | 中国人民解放军国防科技大学 | Pressure-storable deep sea suspension depth setting device |
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2015
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111959727A (en) * | 2020-08-25 | 2020-11-20 | 中国人民解放军国防科技大学 | Pressure-storable deep sea suspension depth setting device |
CN111959727B (en) * | 2020-08-25 | 2021-09-14 | 中国人民解放军国防科技大学 | Pressure-storable deep sea suspension depth setting device |
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