KR20040043558A - Movable Speed Calibration Method and Equipment for Aircraft - Google Patents

Movable Speed Calibration Method and Equipment for Aircraft Download PDF

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Publication number
KR20040043558A
KR20040043558A KR1020020071873A KR20020071873A KR20040043558A KR 20040043558 A KR20040043558 A KR 20040043558A KR 1020020071873 A KR1020020071873 A KR 1020020071873A KR 20020071873 A KR20020071873 A KR 20020071873A KR 20040043558 A KR20040043558 A KR 20040043558A
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KR
South Korea
Prior art keywords
speed
aircraft
points
runway
cameras
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KR1020020071873A
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Korean (ko)
Inventor
김응태
이종원
안석민
한창환
최선우
성기정
김근택
김진원
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한국항공우주연구원
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Priority to KR1020020071873A priority Critical patent/KR20040043558A/en
Publication of KR20040043558A publication Critical patent/KR20040043558A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/38—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using photographic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C39/00—Aircraft not otherwise provided for
    • B64C39/02—Aircraft not otherwise provided for characterised by special use
    • B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/167—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object

Abstract

PURPOSE: A method for correcting the speed of a mobile aircraft is provided to perform the speed correction test without depending on the aviation test field. CONSTITUTION: A method for correcting the speed of a mobile aircraft includes the steps of: installing a pair of cameras(1) at two positions with respect to a level(2) horizontally; positioning the side position display rods at two places by using a vertical adjustment detector(3) of the cameras(1) and positioning it perpendicular to the longitudinal direction of the runway; and correcting the speed of the aircraft by measuring the moving time of the object between two places with synchronizing the times of the cameras(1).

Description

이동형 항공기 속도보정 방법 및 그 장치{Movable Speed Calibration Method and Equipment for Aircraft}Movable Speed Calibration Method and Equipment for Aircraft

본 발명은 항공기 속도계를 보정하기 위한 이동형 항공기 속도보정 장치에 관한 것으로,The present invention relates to a mobile aircraft speed compensation device for calibrating an aircraft speedometer,

더욱 상세하게는 두개 이상의 카메라(영상기록 장치)를 이용하여 비행 시험장에 제한을 받지 않고 속도 보정시험을 수행할 수 있도록 하는 이동형 항공기 속도보정 방법 및 그 장치에 관한 것이다.More specifically, the present invention relates to a mobile aircraft speed compensation method and apparatus for allowing a speed calibration test to be performed using two or more cameras (image recording devices) without being limited to a flight test site.

항공기에 장착된 속도계는 피토관(Pitot Tube)에서 측정되는 전압과 정압의 압력차에 의하여 속도를 측정한다.The speedometer mounted on the aircraft measures the speed by the pressure difference between the voltage and the static pressure measured in the Pitot Tube.

그러나 전압의 경우와 속도변환기(Pressure Transducer)의 경우는 제작사에서 비교적 정확히 보정되어 공급되므로 큰 오차가 없으나, 정압의 경우는 측정 위치에 따라 큰 측정오차가 발생한다.However, there is no big error in the case of voltage and pressure transducer because it is relatively corrected and supplied by the manufacturer, but in case of constant pressure, big measurement error occurs depending on the measurement position.

이에 따라 항공기 속도계가 나타내는 측정값이 실제 속도와 많은 차이를 보이므로, 대부분의 항공기는 제작 후 비행시험을 통하여 속도를 보정하게 된다.Accordingly, since the measured value indicated by the aircraft speedometer shows a lot of difference from the actual speed, most aircraft will correct the speed through flight test after manufacture.

종래 대표적으로 사용되는 방법은 두 지점사이를 일정한 속도로 비행을 하고, 통과하는 시간을 초시계로 측정하는 방법이 사용되고 있으나, 항공기의 속도가 빠른 관계로 상당히 큰 오차가 발생한다.Conventionally, a method that is typically used is a method of flying between two points at a constant speed, and measuring the time passing through the stopwatch, but due to the high speed of the aircraft, a significant error occurs.

본 발명은 이러한 종래의 결점을 해소시키기 위하여 안출된 것으로, 항공공학부문의 비행시험분야에 속하는 기술로서, 동조된 영상기록장치를 이용하여 측정오차를 효과적으로 줄일 수 있도록 하는 것이다.The present invention has been made to solve the above-mentioned shortcomings, and it is a technology belonging to the field of flight test in the aeronautical engineering sector, and it is possible to effectively reduce the measurement error by using a synchronized image recording apparatus.

본 발명은 일정한 간격을 두고 설치되는 위치 표시봉의 양측으로 위치표시봉을 설치하여 활주로의 길이방향과 직각으로 설치되는 영상기록장치를 통하여 항공기가 두 지점사이를 통과하는 시간을 정확히 측정할 수 있도록 하는 것이다.The present invention allows the aircraft to accurately measure the time passing between the two points through the video recording device installed at right angles to the longitudinal direction of the runway by installing the position indicator rods on both sides of the position indicator rods installed at regular intervals. will be.

본 발명은 수준기를 기준으로 수평조절판으로 지면에 대하여 두 지점에서 카메라를 수평으로 설치하는 과정과,The present invention is a process of horizontally installing the camera at two points with respect to the ground level plate based on the level,

카메라의 직각 조정 관찰기를 이용하여 중앙위치 표시봉에서 같은 거리에 떨어진 측면위치 표시봉을 두지점에 일치시키도록 하고 활주로 길이 방향과 직각으로 위치시키는 과정과,Using the camera's right angle observer to align the side position bar at the same distance from the center position bar at two points and to position it perpendicular to the runway length;

카메라의 시간을 동조시켜 두지점간의 물체 이동시간을 측정하여 항공기의 속도를 보정함을 특징으로 하는 것이다.By synchronizing the time of the camera is characterized in that the speed of the aircraft is corrected by measuring the moving time of the object between two points.

도 1 은 본 발명의 속도 측정 기록장치의 전체 설치상태도1 is an overall installation state of the speed measurement recording apparatus of the present invention

도 2 는 본 발명의 속도 측정 기록장치의 직각 위치상태도2 is a right angle position state diagram of a speed measurement recording apparatus of the present invention;

도 3 은 본 발명의 영상기록 장치의 사시도3 is a perspective view of an image recording apparatus of the present invention;

도 4 는 본 발명의 측정을 위한 기본 화면4 is a basic screen for the measurement of the present invention;

도 5 는 본 발명의 위치 측정을 위한 직각조정 관찰기의 화면5 is a screen of a right angle observer for measuring the position of the present invention.

[도면의 주요 부분에 대한 부호의 설명][Description of Symbols for Main Parts of Drawing]

1, 1' : 카메라2 : 수준기1, 1 ': Camera 2: Level

3 : 직각 조정 관찰기4 : 수평조절판3: right angle adjusting observer 4: leveling plate

5 : 카메라 받침대6 : 중앙위치 표시봉5: camera stand 6: center position display rod

7, 7' : 측면위치 표시봉7, 7 ': side position indicator

본 발명은 활주로(9)에 일정한 간격을 두고 중앙위치 표시봉(6)을 설치하며, 중앙위치 표시봉(6)의 양측에 각각 측면위치 표시봉(7, 7')을 설치한다.The present invention installs the central position display rods 6 at regular intervals on the runway 9, and installs the side position display rods 7 and 7 'on both sides of the central position display rods 6, respectively.

중앙위치 표시봉(6)의 일직선상에서 카메라 받침대(5)로 세워지는 카메라(1, 1')를 설치한다.The cameras 1 and 1 'which are mounted on the camera stand 5 on the straight line of the central position display rod 6 are installed.

상기 카메라(1, 1')는 수준기(2)를 기준으로 하측에 설치된 수평조절판(4)을 조정하여 두지점에서 지면에 대하여 수평으로 설치된다.The cameras 1 and 1 'are installed horizontally with respect to the ground at two points by adjusting the horizontal adjustment plate 4 installed on the lower side with respect to the level 2.

카메라(1, 1')는 직각 조정 관찰기(3)를 이용하여 도 2 와 같이 삼각 측정 방법으로 중앙위치 표시봉(6)을 측정 기준위치로 하여 양측으로 같은 위치에 떨어진 두지점인 측면위치 표시봉(7, 7')을 일치시킨다.The cameras 1 and 1 'use the right angle adjustment observer 3 to display the side positions, which are two points separated from the same position on both sides with the center position bar 6 as the measurement reference position by the triangulation method as shown in FIG. Match the rods 7 and 7 '.

영상기록장치인 카메라(1, 1')를 활주로(9)의 길이 방향과 정확하게 직각으로 위치시킬 수 있도록 하는 것이다.The cameras 1 and 1 ', which are image recording apparatuses, can be positioned at right angles to the longitudinal direction of the runway 9.

카메라(1, 1')는 시간을 동조시키는 장치가 내부에 혹은 기록장비에 설치되고, 시간이 1/100초 단위로 기록장치에 기록되도록 설치되어, 항공기가 두지점사이를 통과하는 시간을 1/100초 단위로 정확히 측정하는 것이다.Cameras 1 and 1 'are installed so that the time-synchronizing device is installed inside or in the recording equipment, and the time is recorded in the recording device in units of 1/100 second. This is a precise measurement in 100 seconds.

도 4 는 카메라(1, 1')의 기본 화면을 나타낸 것이며, 도 5 는 위치 측정을 위한 직각 조정 관찰기(3)의 화면을 나타낸 것이다.4 shows a basic screen of the cameras 1, 1 ', and FIG. 5 shows a screen of the right angle adjustment observer 3 for position measurement.

카메라(1, 1')와 중앙위치 표시봉(6) 및 측면위치 표시봉(7, 7')은 이동형이므로 비행시험장에 제한을 받지 않고 속도보정 시험을 수행할 수 있는 것이다.The camera (1, 1 '), the center position bar (6) and the side position bar (7, 7') is movable, so that the speed correction test can be performed without being restricted by the test site.

이러한 구성으로 이루어진 본 발명은 활주로(9)에서 일정한 간격(1Km)에서 카메라(1, 1')의 수준기(2)를 기준으로 수평조절판(4)을 조정하여 도 1 과 같이 두 지점에 카메라(1, 1')를 지면에 대하여 수평으로 설치한다.The present invention made of such a configuration in the runway (9) at a constant interval (1Km) at a constant distance (2) based on the level 2 of the camera (1, 1 ') to adjust the leveling plate (4) to the camera ( 1, 1 ') is installed horizontally with respect to the ground.

카메라(1, 1')를 지면에 대하여 수평으로 설치한 후에는 직각 조정 관찰기(3)의 화면을 이용하여 도 2 에 도시한 바와 같이 삼각 측정 방법으로 중앙위치 표시봉(6)에서 같은 거리에 떨어진 측면위치 표시봉(7, 7')의 두지점을 일치시킨다.After the cameras 1 and 1 'are installed horizontally with respect to the ground, by using the screen of the right angle adjustment observer 3, as shown in FIG. Align the two points of the lateral position indicator bars (7, 7 ') away.

이와 같이 카메라(1, 1')를 활주로(9)의 길이 방향과 정확하게 직각으로 위치시키게 된다.In this way, the cameras 1 and 1 'are positioned at right angles to the longitudinal direction of the runway 9.

카메라(1, 1')의 설치가 완료되면 항공기를 이용하여 활주로(9)의 중앙위치 표시봉(6)과 일치되는 지점을 시속 350Km로 통과시킨다.When the installation of the camera (1, 1 ') is completed, the point that coincides with the central position indicator rod 6 of the runway (9) by using the aircraft passes at 350 km per hour.

이때, 카메라(1, 1')는 시간을 동조시키는 장치가 내부 혹은 기록장비에 설치되어 있으므로 항공기가 카메라(1, 1')를 통과하는 시간을 1/100초 단위로 기록하게 된다.At this time, since the camera 1, 1 'is provided with a device that synchronizes time, the camera 1, 1' records the time that the aircraft passes through the camera 1, 1 'in units of 1/100 seconds.

카메라(1, 1')의 두지점 사이를 통과하는 시간이 기록되면 항공기의 속도계와 비교하여 속도보정을 하게 된다.When the time passing between two points of the cameras 1 and 1 'is recorded, the speed is compared with the speedometer of the aircraft.

따라서 카메라(1, 1')를 이용함으로써 측정자(사람)가 초시계를 이용하여 측정하던 측정오차를 줄일 수 있으며, 항공기의 비행시험을 통하여 정확한 통과시간의 제공으로 항공기의 속도계에서 발생되는 오차를 줄일 수 있는 것이다.Therefore, by using cameras (1, 1 '), it is possible to reduce the measurement error that the measurer (man) measured using the stopwatch. It can be.

본 발명은 이하의 실시예를 통하여 더욱 명확하게 알 수 있을 것이다.The invention will be more clearly understood through the following examples.

[실시예]EXAMPLE

(1) 카메라의 설치과정(1) Installation process of the camera

수준기(2)를 기준으로 수평조절판(4)으로 지면에 대하여 두 지점에서 카메라(1, 1')를 수평으로 설치하는 것이다.It is to install the camera (1, 1 ') horizontally at two points with respect to the ground by the leveling plate (4) relative to the level (2).

(2) 카메라와 표시봉의 설치과정(2) Installation process of camera and indicator rod

카메라(1, 1')의 직각 조정 관찰기(3)를 이용하여 중앙위치 표시봉(6)에서 같은 거리에 떨어진 측면위치 표시봉(7, 7')을 두지점에 일치시키도록 하고 활주로 길이 방향과 직각으로 위치시키는 것이다.Using the right angle adjusting observer 3 of the camera 1, 1 ', the side position indicating rods 7, 7' away from the center position indicating rod 6 are aligned at two points, and the runway length direction It is located at right angles to

(3) 속도보정과정(3) Speed correction process

카메라(1, 1')의 시간을 동조시켜 두지점간의 물체 이동시간을 측정하여 항공기의 속도를 보정하는 것이다.The speed of the aircraft is corrected by synchronizing the times of the cameras 1 and 1 'and measuring the moving time of the object between two points.

상기의 과정을 수회 반복함으로써 시험 오차를 줄이고 정확도를 향상시키는 것이다.By repeating the above process several times, the test error is reduced and the accuracy is improved.

본 발명은 항공기 속도 측정장비를 이동이 용이하게 제작하여, 비행 시험장에 제한을 받지 않고 속도보정시험을 수행할 수 있도록 하는 것이다.The present invention is to make the aircraft speed measurement equipment easy to move, to be able to perform the speed correction test without being limited to the flight test site.

본 발명은 오차가 적은 카메라를 이용한 영상기록을 이용하여 통과시간의 정확한 측정으로 정확한 속도를 제공하므로 속도보정을 정확하게 할 수 있는 것이다.According to the present invention, speed correction can be accurately performed by providing an accurate speed by accurately measuring a passing time using an image recording using a camera having a low error.

본 발명은 속도보정시험을 용이하고 정확하게 수행할 수 있도록 하여 항공기의 성능분석을 더욱 정확히 할 수 있도록 하고, 분석시간도 절약할 수 있도록 하는 것이다.The present invention is to be able to perform the speed correction test easily and accurately to more accurately analyze the performance of the aircraft, and to save the analysis time.

본 발명은 두대의 카메라를 이용하여 시험하였으나, 카메라의 설치 대수를 늘리는 경우에는 시험오차를 더욱 줄일 수 있다.The present invention was tested using two cameras, but in the case of increasing the number of cameras installed, the test error can be further reduced.

Claims (2)

활주로를 통과하는 항공기의 속도를 측정하여 속도보정시험을 수행함에 있어서,In performing the speed calibration test by measuring the speed of the aircraft passing the runway, 수준기(2)를 기준으로 수평조절판(4)으로 지면에 대하여 두 지점에서 카메라(1, 1')를 수평으로 설치하는 과정과,Installing the cameras 1 and 1 'horizontally at two points with respect to the ground with the leveling plate 4 based on the level 2; 카메라(1, 1')의 직각 조정 관찰기(3)를 이용하여 중앙위치 표시봉(6)에서 같은 거리에 떨어진 측면위치 표시봉(7, 7')을 두지점에 일치시키도록 하고 활주로 길이 방향과 직각으로 위치시키는 과정과,Using the right angle adjusting observer 3 of the camera 1, 1 ', the side position indicating rods 7, 7' away from the center position indicating rod 6 are aligned at two points, and the runway length direction Positioning at right angles to 카메라(1, 1')의 시간을 동조시켜 두지점간의 물체 이동시간을 측정하여 항공기의 속도를 보정함을 특징으로 하는 이동형 항공기 속도보정 방법.A method of compensating the speed of an aircraft by synchronizing the times of cameras (1, 1 ') and measuring the moving time of the object between two points. 활주로를 통과하는 항공기의 속도를 측정하여 속도보정시험을 수행함에 있어서,In performing the speed calibration test by measuring the speed of the aircraft passing the runway, 수준기(2)와 직각 조정 관찰기(3) 및 수평조절판(4)으로 이루어져 활주로(9)와 직각으로 위치하는 카메라(1, 1')와,A camera (1, 1 ') positioned at right angles to the runway (9), consisting of a level (2), a right angle adjustment observer (3), and a horizontal adjustment plate (4) 상기 활주로(9)에 일정한 거리를 두고 두지점에 설치되는 중앙위치 표시봉(6)과,A central position display rod 6 installed at two points at a predetermined distance from the runway 9; 상기 중앙위치 표시봉(6)의 양측으로 카메라(1, 1')를 통하여 같은 거리의 두지점에 설치되는 측면위치 표시봉(7, 7')으로 설치됨을 특징으로 하는 이동형 항공기 속도보정 장치.A mobile aircraft speed compensation device, characterized in that the side position display rods (7, 7 ') are installed at both points of the same distance through the camera (1, 1') to both sides of the central position display rod (6).
KR1020020071873A 2002-11-19 2002-11-19 Movable Speed Calibration Method and Equipment for Aircraft KR20040043558A (en)

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WO2013168991A1 (en) * 2012-05-11 2013-11-14 Son In Gyu Image measurement device and method for measuring deformation of civil structure
KR102341786B1 (en) * 2021-07-08 2021-12-21 국방과학연구소 Method and apparatus, and systems for measuring velocity of projectile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013168991A1 (en) * 2012-05-11 2013-11-14 Son In Gyu Image measurement device and method for measuring deformation of civil structure
KR102341786B1 (en) * 2021-07-08 2021-12-21 국방과학연구소 Method and apparatus, and systems for measuring velocity of projectile

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