CN109084807B - Aircraft attack angle sensor calibrator and horizontal calibration method - Google Patents
Aircraft attack angle sensor calibrator and horizontal calibration method Download PDFInfo
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- CN109084807B CN109084807B CN201811114925.3A CN201811114925A CN109084807B CN 109084807 B CN109084807 B CN 109084807B CN 201811114925 A CN201811114925 A CN 201811114925A CN 109084807 B CN109084807 B CN 109084807B
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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Abstract
The invention belongs to the technical field of aircraft ground maintenance, and particularly relates to an aircraft attack angle sensor calibrator and a horizontal calibration method. The angle of attack measurement of the medium-sized transport plane is carried out by combining a vane arranged on the outer side of the plane body with an angle of attack sensor arranged on the inner side of the plane body, and the angle of attack sensor has no special calibration tool. In order to solve the technical problem, the calibrator for the aircraft attack angle sensor is used for horizontally calibrating the attack angle sensor and comprises an angle dial and a horizontal pointer, wherein the lower surface of the angle dial is provided with a support, the upper surface of the angle dial is provided with a bubble horizontal ruler, and the bubble horizontal ruler is parallel to a 0-degree scale mark; the horizontal pointer is provided with a bubble level bar in parallel, the tail end of the horizontal pointer is provided with a slotted hole combined with the vane of the attack angle sensor, the horizontal pointer is also provided with a plurality of threaded holes communicated with the slotted hole, and the vane is clamped through an adjusting screw. The method has the advantages of simple maintenance steps, easy operation and convenience for horizontal calibration of the attack angle sensor.
Description
Technical Field
The invention belongs to the technical field of aircraft ground maintenance, and particularly relates to an aircraft attack angle sensor calibrator and a horizontal calibration method.
Background
The angle of attack of an aircraft is the angle between the wing chord and the relative wind speed, and is one of important atmospheric data, and a fire control system, a cruise control system and a stall warning system of the aircraft cannot depart from the angle of attack information of the aircraft. Therefore, it is important to perform effective horizontal calibration and measurement of the aircraft angle of attack sensor when the sensor is installed.
The angle of attack measurement of the medium-sized transport plane is carried out by combining a vane arranged on the outer side of the plane body with an angle of attack sensor arranged on the inner side of the plane body, and the angle of attack sensor has no special calibration tool.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides the calibrator for the aircraft attack angle sensor for horizontal calibration.
In order to solve the technical problem, the calibrator for the aircraft attack angle sensor is used for horizontally calibrating the attack angle sensor and comprises an angle dial and a horizontal pointer, wherein the lower surface of the angle dial is provided with a support, the upper surface of the angle dial is provided with a bubble horizontal ruler, and the bubble horizontal ruler is parallel to a 0-degree scale mark; the horizontal pointer is provided with a bubble level bar in parallel, the tail end of the horizontal pointer is provided with a slotted hole combined with the vane of the attack angle sensor, the horizontal pointer is also provided with a plurality of threaded holes communicated with the slotted hole, and the vane is clamped through an adjusting screw.
Soft pads can be added at the two ends of the bubble level ruler of the angle dial and the bubble level ruler of the horizontal pointer.
The support and the air bubble leveling rod are connected through screws, and the support and the airplane body are fixed through the screws.
A method for calibrating an attack angle sensor by using the aircraft attack angle sensor calibrator comprises the following steps:
step one, enabling a flying frame to be in a horizontal state;
sleeving and fixing a slotted hole on the horizontal pointer on the vane of the attack angle sensor to ensure that the central line of the pointer passes through the vane rotating center of the attack angle sensor;
preliminarily fixing a support of the angle dial on the body of the airplane, rotating the horizontal pointer, leveling a bubble level ruler of the horizontal pointer, adjusting the position of the angle dial to enable a 0-degree scribed line of the angle dial to be superposed with the horizontal pointer, leveling the bubble level ruler of the angle dial, overlapping an angle center of the angle dial with a rotation center of the weathercock, completely fixing the angle dial, and taking the 0-degree scribed line of the angle dial as a calibration datum line;
and step four, rotating the pointer to point to the 0-degree reticle of the angle dial, adjusting the zero adjuster of the attack angle sensor, and repeating the step four until the design requirement of horizontal calibration of the attack angle sensor is met, so as to finish the horizontal calibration of the attack angle sensor.
A method for horizontally calibrating an attack angle sensor for an airplane in a parking state by using the calibrator for the attack angle sensor of the airplane comprises the following steps:
firstly, judging the shutdown pitching angle of the airplane through an airplane inertial navigation system;
adjusting the angle dial to enable the bubble level ruler to be leveled, enabling the angle center to be overlapped with the vane rotating center of the attack angle sensor, and fixing the angle dial on the airplane body; sleeving a slotted hole on a horizontal pointer on a vane of an attack angle sensor to ensure that the central line of the pointer passes through the vane rotation center of the attack angle sensor and then is fixed;
rotating the horizontal pointer, and pointing the horizontal pointer to a scale mark which is consistent with the shutdown pitching angle on the angle dial; and (4) checking whether the attack angle sensor indicates a horizontal position, if not, adjusting a zero adjuster of the attack angle sensor, and repeating the step three until the design requirement of horizontal calibration of the attack angle sensor is met, thereby completing the horizontal calibration of the wind vane of the attack angle sensor.
Has the advantages that: compared with the prior art, the method has the advantages of simple maintenance steps, easy operation and convenience for horizontal calibration of the angle of attack sensor.
Drawings
FIG. 1 is a front view of the angle dial of the present invention;
FIG. 2 is a left side view of the angular dial of the present invention;
FIG. 3 is a front view of the pointer of the present invention;
fig. 4 is a left side view of the pointer of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: an aircraft angle of attack sensor calibrator, consisting essentially of: an angle scale 101 and a horizontal pointer 201, as shown in fig. 1, the angle scale 101 is connected with a support 102 and a bubble level 103 by screws 104. Wherein the bubble level gauge 103 is arranged on the dial 101 through a screw 104 and is parallel to the 0-degree scale mark, two ends of the bubble level gauge 103 can be provided with cushions, and the support 102 and the airplane body are fixed through the screw 104.
As shown in fig. 2, a bubble level 202 is installed on a horizontal pointer 201, and both ends of the bubble level 202 can be padded, and the bubble level 202 is parallel to the horizontal pointer 201. The horizontal cursor 201 has at its end a slotted hole for coupling with the vane of the angle of attack sensor and a plurality of threaded holes communicating with the slotted hole and clamped by means of adjusting screws 203.
The method for calibrating the attack angle sensor by using the aircraft attack angle sensor calibrator comprises the following steps:
step one, enabling a flying frame to be in a horizontal state;
step two, sleeving a slotted hole on the horizontal pointer 201 on the vane of the attack angle sensor, and firmly fixing the horizontal pointer 201 on the vane of the attack angle sensor by adjusting the adjusting screw 203 and enabling the center line of the pointer to pass through the vane rotating center of the attack angle sensor;
thirdly, preliminarily fixing a support 102 of the angle dial on the body of the airplane by using a screw 104, rotating a horizontal pointer 201 to drive a vane of an attack angle sensor to rotate together, leveling a bubble level bar 202 on the horizontal pointer 201, and adjusting the position of the angle dial 101 to ensure that a 0-degree scribed line of the angle dial 101 is superposed with the horizontal pointer 201, leveling a bubble level bar 103 of the angle dial 101, overlapping an angle center of the angle dial 101 with a rotation center of the vane, completely fixing the angle dial 101, and taking the 0-degree scribed line of the angle dial 101 as a calibration datum line;
and step four, during calibration, rotating the pointer to drive the vane of the attack angle sensor to rotate together, pointing the needle on the pointer to a 0-degree reticle of the angle dial 101, adjusting a zero adjuster of the attack angle sensor, and repeating the step four until the design requirement of horizontal calibration of the attack angle sensor is met, so that the horizontal calibration work of the attack angle sensor is completed.
In another embodiment of the present invention, when the aircraft is parked normally at a parking lot, different parking pitch angles are formed due to the change of the self-weight of the aircraft, the change of the air pressure in the landing gear buffer strut and the change of the air pressure of the tires, and in this case, the following method is adopted to perform the horizontal calibration of the attack angle sensor:
judging and reading a shutdown pitching angle of the airplane through an airplane inertial navigation system or other modes;
adjusting the angle dial 101 to enable the bubble level scale 103 to be leveled and the angle center to be overlapped with the rotation center of the vane, and fixing the angle dial 101 on the airplane body; sleeving a slotted hole on a horizontal pointer 201 on a vane of an attack angle sensor, adjusting an adjusting screw 203, and firmly fixing the horizontal pointer 201 on the vane of the attack angle sensor by enabling a center line of the pointer to pass through a vane rotating center of the attack angle sensor;
rotating the horizontal pointer 201 to drive the vane of the attack angle sensor to rotate together, and pointing the horizontal pointer 201 to a scale mark which is on the angle dial 101 and is consistent with the shutdown pitch angle; and at the moment, checking whether the attack angle sensor indicates a horizontal position, if not, adjusting a zero adjuster of the attack angle sensor, and repeating the third step until the design requirement of horizontal calibration of the attack angle sensor is met, thereby completing the horizontal calibration of the vane of the attack angle sensor.
Claims (6)
1. A method of calibrating an angle of attack sensor using an aircraft angle of attack sensor calibrator comprising an angle dial (101) and a horizontal pointer (201), the angle dial (101) having a support (102) on a lower surface and a bubble level (103) on an upper surface, the bubble level (103) being parallel to a 0 ° scale line; a bubble level bar (202) is arranged on the horizontal pointer (201) in parallel, the tail end of the horizontal pointer (201) is provided with a slotted hole combined with a vane of an attack angle sensor, the horizontal pointer (201) is also provided with a plurality of threaded holes communicated with the slotted hole, and the vane is clamped through an adjusting screw (203);
the method comprises the following steps:
step one, enabling a flying frame to be in a horizontal state;
secondly, sleeving a slotted hole on the horizontal pointer (201) on the vane of the attack angle sensor and fixing the slotted hole to ensure that the central line of the pointer passes through the vane rotating center of the attack angle sensor;
step three, preliminarily fixing a support (102) of the angle dial on the body of the airplane, rotating a horizontal pointer (201), leveling a bubble level (202) of the horizontal pointer (201), adjusting the position of the angle dial (101) to enable a 0-degree scale line of the angle dial (101) to be overlapped with the horizontal pointer (201), leveling a bubble level (103) of the angle dial (101), overlapping an angle center of the angle dial (101) with a rotation center of a vane, completely fixing the angle dial (101), and enabling the 0-degree scale line of the angle dial (101) to be a calibration datum line;
and fourthly, rotating the pointer to point to a 0-degree reticle of the angle dial (101), and adjusting a zero adjuster of the attack angle sensor until the design requirement of horizontal calibration of the attack angle sensor is met, so that the horizontal calibration of the attack angle sensor is completed.
2. The method of calibrating an angle of attack sensor of claim 1, wherein: cushions are added at two ends of the bubble level (103) of the angle dial (101) and the bubble level (202) of the horizontal pointer (201).
3. The method of calibrating an angle of attack sensor of claim 1, wherein: the support (102) is connected with a bubble level (103) of the angle dial (101) through a screw (104), and the support (102) is fixed with the airplane body through the screw (104).
4. A method of horizontally calibrating an angle of attack sensor for an aircraft in a parked state using an aircraft angle of attack sensor calibrator comprising an angle dial (101) and a horizontal pointer (201), the angle dial (101) having a support (102) on a lower surface and a bubble level (103) on an upper surface, the bubble level (103) being parallel to a 0 ° scale; a bubble level bar (202) is arranged on the horizontal pointer (201) in parallel, the tail end of the horizontal pointer (201) is provided with a slotted hole combined with a vane of an attack angle sensor, the horizontal pointer (201) is also provided with a plurality of threaded holes communicated with the slotted hole, and the vane is clamped through an adjusting screw (203);
the method comprises the following steps:
firstly, judging the shutdown pitching angle of the airplane through an airplane inertial navigation system;
adjusting the angle dial (101) to enable the bubble level ruler (103) to be leveled, enabling the angle center to be overlapped with the vane rotating center of the attack angle sensor, and fixing the angle dial (101) on the airplane body; sleeving a slotted hole on a horizontal pointer (201) on a vane of an attack angle sensor to ensure that the central line of the pointer passes through the vane rotation center of the attack angle sensor and then is fixed;
step three, rotating a horizontal pointer (201), and pointing the horizontal pointer (201) to a scale mark which is consistent with the shutdown pitch angle on the angle dial (101); and checking whether the attack angle sensor indicates a horizontal position, if not, adjusting a zero adjuster of the attack angle sensor until the horizontal calibration design requirement of the attack angle sensor is met, and finishing the horizontal calibration of the wind vane of the attack angle sensor.
5. The method of claim 4, wherein the method further comprises: cushions are added at two ends of the bubble level (103) of the angle dial (101) and the bubble level (202) of the horizontal pointer (201).
6. The method of claim 4, wherein the method further comprises: the support (102) is connected with a bubble level (103) of the angle dial (101) through a screw (104), and the support (102) is fixed with the airplane body through the screw (104).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811114925.3A CN109084807B (en) | 2018-09-25 | 2018-09-25 | Aircraft attack angle sensor calibrator and horizontal calibration method |
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| CN201811114925.3A CN109084807B (en) | 2018-09-25 | 2018-09-25 | Aircraft attack angle sensor calibrator and horizontal calibration method |
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| CN109084807B true CN109084807B (en) | 2022-02-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110530328B (en) * | 2019-08-13 | 2021-11-02 | 中国航空工业集团公司西安飞行自动控制研究所 | Angle of attack sensor gives device |
| CN110987022A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Inertial equipment target calibration method based on satellite attitude and direction measurement technology |
| CN112665491B (en) * | 2020-12-16 | 2022-07-08 | 武汉航空仪表有限责任公司 | Wind vane angle measuring device and method for attack angle sensor |
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