CN210139978U - Vacuum protection device for aircraft attack angle sensor - Google Patents
Vacuum protection device for aircraft attack angle sensor Download PDFInfo
- Publication number
- CN210139978U CN210139978U CN201921011404.5U CN201921011404U CN210139978U CN 210139978 U CN210139978 U CN 210139978U CN 201921011404 U CN201921011404 U CN 201921011404U CN 210139978 U CN210139978 U CN 210139978U
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- cover body
- aircraft
- angle
- attack
- cover
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- Expired - Fee Related
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Abstract
The utility model provides an aircraft angle of attack sensor vacuum protection device, after the aircraft lands, an operator will cover the body and detain on the angle of attack sensor of aircraft, later compress tightly the cover body on aircraft organism surface, another operator inserts the suction tube and bleeds in the check valve, makes the inner chamber of the cover body be in vacuum state, owing to the effect of check valve after pulling out the suction tube, the air of external environment can't get into in the cover body to compress tightly the cover body on the aircraft organism under the pressure of atmospheric pressure, thereby realize the protection to angle of attack sensor. When the aircraft needs to take off, press the pressure release button on the relief valve, it is internal that outside air gets into the cover, and the cover is internal to realize atmospheric pressure with outside atmosphere balanced this moment, can easily take off the cover body this moment, and convenient operation is simple.
Description
Technical Field
The utility model relates to an aircraft sensor protects technical field, concretely relates to aircraft angle of attack sensor vacuum protection device.
Background
The angle of attack sensor (AOA) is used for detecting the angle of attack of the airplane, and the blades of the AOA can deflect along with the change of the angle of attack of the airplane under the action of airflow so as to provide an angle of attack signal of the airplane and transmit the signal to an instrument display and a speed-per-hour warning system, thereby ensuring the flight safety. The existing mainstream models (Boeing 737, airbus A320 and the like) all adopt single-vane type attack angle sensors, the sensors are simple in structure and reliable in performance, but the surface smoothness and the pneumatic appearance of the sensors are seriously influenced by liquid contamination and collision in the aircraft maintenance process, further aircraft attack angle measurement errors are generated, flight safety is influenced, and the main reason for the accident of the Boeing 737MAX aircraft is that the attack angle sensor errors are overlarge. The existing windage scale protective sleeve only can play a role in warning, and cannot prevent erosion of external liquid to an angle of attack sensor (AOA) and mistaken collision of maintenance personnel.
Disclosure of Invention
The utility model discloses an overcome not enough of above technique, provide an easy operation, effectively carry out the device protected to aircraft angle of attack sensor.
The utility model overcomes the technical scheme that its technical problem adopted is:
an aircraft angle of attack sensor vacuum protection device, comprising:
the bottom of the cover body is opened, a closed cavity is formed inside the cover body, the size of the cavity is larger than the outer diameter size of the aircraft attack angle sensor, and the front end of the cover body is provided with a mounting hole I and a mounting hole II respectively;
the one-way valve is hermetically arranged on the mounting hole I and only allows airflow to flow from the containing cavity in the cover body to the outside of the cover body in a one-way mode;
the pressure release valve is hermetically inserted into the mounting hole II, and the nut is positioned in the cover body and screwed on the threaded end of the pressure release valve to fix the pressure release valve on the cover body;
the fixing ring is of a semicircular structure and is arranged at the upper end of the cover body, one end of the rope is bound and fixed on the fixing ring, and the other end of the rope is provided with a safety warning streamer; and
and when the cover body is buckled on the attack angle sensor, the bottom of the cover body is contacted with the surface of the airplane body, and the air pumping cylinder is inserted into the one-way valve to pump out air in the cover body so as to form a vacuum state in the cover body.
Preferably, the cover body is made of plastic material.
Preferably, the upper end surface of the cover body is made of transparent plastic material.
In order to improve the sealing performance, the sealing device further comprises a sealing ring arranged at the bottom of the cover body in a surrounding mode.
The utility model has the advantages that: when the aircraft lands, one worker buckles the cover body on the attack angle sensor of aircraft, later compresses tightly the cover body on aircraft organism surface, and another worker inserts the aspiration cylinder and bleeds in the check valve, makes the inner chamber of the cover body be in vacuum state, pulls out behind the aspiration cylinder because the effect of check valve, and the air of external environment can't get into in the cover body to compress tightly the cover body on the aircraft organism under the pressure of atmospheric pressure, thereby realize the protection to attack angle sensor. When the aircraft needs to take off, press the pressure release button on the relief valve, it is internal that outside air gets into the cover, and the cover is internal to realize atmospheric pressure with outside atmosphere balanced this moment, can easily take off the cover body this moment, and convenient operation is simple.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure, 1 is a cover body 2, an air pumping cylinder 3, a mounting hole I4, a one-way valve 5, a mounting hole II 6, a pressure release valve 7, a nut 8, a sealing ring 9, a fixing ring 10, a rope 11 and a safety warning streamer.
Detailed Description
The present invention will be further explained with reference to fig. 1.
An aircraft angle of attack sensor vacuum protection device, comprising: the aircraft angle of attack sensor comprises a cover body 1, a mounting hole I3 and a mounting hole II 5, wherein the bottom of the cover body 1 is provided with an opening, a closed cavity is formed inside the cover body, the size of the cavity is larger than the outer diameter of the aircraft angle of attack sensor, and the front end of the cover body 1 is provided with the mounting hole I3 and the mounting hole II 5 respectively; the one-way valve 4 is hermetically arranged on the mounting hole I3, and the one-way valve 4 only allows airflow to flow from the containing cavity in the cover body 1 to the outside of the cover body 1 in a one-way mode; the pressure release valve 6 is hermetically inserted into the mounting hole II 5, and the nut 7 is positioned in the cover body 1 and screwed on the threaded end of the pressure release valve 6 to fix the pressure release valve 6 on the cover body 1; the fixing ring 9 is of a semicircular structure and is arranged at the upper end of the cover body 1, one end of the rope 10 is bound and fixed on the fixing ring 9, and the other end of the rope is provided with a safety warning streamer 11; and the air pumping cylinder 2 is used for pumping air in the cover body 1 by inserting the air pumping cylinder 2 into the one-way valve 4 when the cover body 1 is buckled on the attack angle sensor and the bottom of the cover body 1 is contacted with the surface of the airplane body, so that a vacuum state is formed in the cover body 1. After the aircraft lands, one worker buckles the cover body 1 on the angle of attack sensor of aircraft, later compresses tightly the cover body 1 on the aircraft organism surface, and another worker inserts the aspiration cylinder 2 and extracts air in the check valve 4, makes the inner chamber of the cover body 1 be in vacuum state, pulls out behind the aspiration cylinder 2 because the effect of check valve 4, and the air of external environment can't get into in the cover body 1 to compress tightly the cover body on the aircraft organism under the pressure of atmospheric pressure, thereby realize the protection to the angle of attack sensor. When the aircraft needs to take off, press the pressure release button on the relief valve 6, the outside air gets into the cover body 1, and the cover body 1 is internal to realize atmospheric pressure with outside atmosphere balanced this moment, can easily take off the cover body 1 this moment, and convenient operation is simple.
Further, the cover body 1 is made of plastic material. The damage to the attack angle sensor caused by external collision can be effectively prevented. The upper end surface of the cover body 1 is made of transparent plastic materials. The top of the cover body 1 made of transparent material can be used for checking the appearance state of the attack angle sensor at any time under the condition that the cover body 1 is not detached.
Preferably, the sealing ring 8 is arranged at the bottom of the cover body 1 in a surrounding mode. When the cavity of the cover body 1 is required to be vacuumized, the bottom of the cover body 1 is in surface contact with an airplane collector through the rubber ring 8, and the rubber ring 8 has the characteristics of softness, compressibility and deformation, so that the deformation adaptation of the rubber ring and the surface radian of an airplane body can be ensured, the close fit with the surface of the airplane body is ensured, and the internal vacuum degree is improved.
Claims (4)
1. An aircraft angle of attack sensor vacuum protection device, comprising:
the aircraft angle of attack sensor comprises a cover body (1), wherein the bottom of the cover body is opened, a closed cavity is formed inside the cover body, the size of the cavity is larger than the outer diameter of the aircraft angle of attack sensor, and a mounting hole I (3) and a mounting hole II (5) are respectively formed in the front end of the cover body (1);
the one-way valve (4) is hermetically arranged on the mounting hole I (3), and the one-way valve (4) only allows airflow to flow from the containing cavity in the cover body (1) to the outside of the cover body (1) in a one-way mode;
the pressure release valve (6) is hermetically inserted into the mounting hole II (5), and the nut (7) is positioned in the cover body (1) and screwed on the threaded end of the pressure release valve (6) to fix the pressure release valve (6) on the cover body (1);
the fixing ring (9) is of a semicircular structure and is arranged at the upper end of the cover body (1), one end of the rope (10) is bound and fixed on the fixing ring (9), and the other end of the rope is provided with the safety warning streamer (11); and
when the cover body (1) is buckled on the attack angle sensor, the bottom of the cover body (1) is in contact with the surface of an airplane body, and the air pumping cylinder (2) is inserted into the one-way valve (4) to pump out air in the cover body (1) so as to form a vacuum state in the cover body (1).
2. The aircraft angle of attack sensor vacuum protection device of claim 1, wherein: the cover body (1) is made of plastic materials.
3. The aircraft angle of attack sensor vacuum protection device of claim 2, wherein: the upper end face of the cover body (1) is made of transparent plastic materials.
4. The aircraft angle of attack sensor vacuum protection device of claim 1, wherein: the cover also comprises a sealing ring (8) arranged at the bottom of the cover body (1) in a surrounding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011404.5U CN210139978U (en) | 2019-07-02 | 2019-07-02 | Vacuum protection device for aircraft attack angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921011404.5U CN210139978U (en) | 2019-07-02 | 2019-07-02 | Vacuum protection device for aircraft attack angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210139978U true CN210139978U (en) | 2020-03-13 |
Family
ID=69735922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921011404.5U Expired - Fee Related CN210139978U (en) | 2019-07-02 | 2019-07-02 | Vacuum protection device for aircraft attack angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210139978U (en) |
-
2019
- 2019-07-02 CN CN201921011404.5U patent/CN210139978U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200313 |