CN114194404B - Throwing recorder and throwing control method thereof - Google Patents
Throwing recorder and throwing control method thereof Download PDFInfo
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- CN114194404B CN114194404B CN202111317756.5A CN202111317756A CN114194404B CN 114194404 B CN114194404 B CN 114194404B CN 202111317756 A CN202111317756 A CN 202111317756A CN 114194404 B CN114194404 B CN 114194404B
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- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000013500 data storage Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 239000000306 component Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C19/00—Aircraft control not otherwise provided for
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- 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
- B64D2045/0065—Black boxes, devices automatically broadcasting distress signals
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Abstract
The invention provides a throwing recorder and a throwing control method thereof, wherein the throwing control method comprises the steps of establishing throwing control conditions according to a safety signal and a plurality of throwing control signals, wherein the throwing control signals comprise a seat pull ring signal, a seat dislocation signal, a right main wheel load signal and an inertial contactor signal; receiving the insurance signal and a plurality of throwing control signals, and judging the throwing control signals; if the throwing control condition is met, a throwing separation signal is generated and a positioning starting signal is started; if the throwing control condition is not met, a throwing separation signal is not generated and a positioning starting signal is not started. The invention also designs a throwing recorder which comprises a separable component, a throwing control box, a insurance control box, a mounting frame and the like. By designing the throwing control conditions, the throwing of the throwing recorder can be accurately controlled, the throwing separable assembly can be controlled after the throwing control conditions are met, abnormal throwing is avoided, and guarantee is provided for accurate positioning of the throwing recorder after the aircraft loses the fact.
Description
Technical Field
The invention belongs to the field of avionics, relates to the technology of data recorders, and particularly relates to a throwing type recorder and a throwing control method thereof.
Background
In the flight accident, namely in the flight process from the start of the aircraft before taking off to the stop of the aircraft after landing, the direct threat safety operation or the event causing personnel casualties, aircraft damage or missing occur, at present, various aircraft are provided with flight parameter recording equipment with a certain protection function so as to record various parameters of the aircraft in the flight process, meanwhile, a throwing recorder is additionally arranged on the aircraft, and when the flight accident occurs, the throwing recorder can be thrown out in time so as to record and store various flight parameter data of the aircraft in the flight process, and data support is provided for later search and rescue, accident analysis and the like.
How to determine the throwing condition and the throwing time of the throwing type recorder plays an important role in pre-judging and rescuing the searching place after the aircraft loses the fact; after the throwing type recorder is thrown out, the flying parameter data can be found and extracted in time, and the method plays an important role in accident cause analysis.
Disclosure of Invention
The invention aims to design a throwing type recorder and a throwing control method thereof, and the design of throwing control conditions in the throwing type recorder and the throwing control method thereof plays an important role in throwing the throwing type recorder under any condition in time, so that the abnormal throwing condition of the throwing type recorder can be avoided. Through the improved design to throwing formula record ware, can in time turn on the power when receiving throwing control signal and provide the electric energy for separable subassembly.
The technical scheme for realizing the aim of the invention is as follows:
In a first aspect, the present invention provides a method for controlling a throwing of a throwing recorder, including the steps of:
S1, setting up a throwing control condition according to a safety signal and a plurality of throwing control signals, wherein the throwing control signals comprise a seat pull ring signal, a seat dislocation signal, a right main wheel load signal and an inertial contactor signal;
the throwing control conditions comprise:
when the seat pull ring signal is effective, judging a seat dislocation signal, a safety signal and a right main wheel load signal, and if the seat dislocation signal is effective, the safety signal is effective and the right main wheel load signal is ineffective, judging that the throwing recorder needs to be thrown out and generating a throwing control signal;
Or when the inertial contactor signal is effective, judging the insurance signal and the right main wheel load signal, and if the insurance signal is effective and the right main wheel load signal is ineffective, judging that the throwing type recorder needs to be thrown out and generating a throwing control signal;
S2, receiving the insurance signal and a plurality of throwing control signals, and judging the throwing control signals;
s201, if the throwing control condition is met, a throwing separation signal is generated, and a positioning starting signal is started;
And S202, if the throwing control condition is not met, a throwing separation signal is not generated, and a positioning starting signal is not started.
According to the invention, the throwing control conditions of the throwing type recorder are designed, so that the throwing type recorder can be accurately controlled, a throwing control signal is output and a positioning starting signal is started after the throwing control signal reaches the conditions, the situation that the throwing type recorder is abnormally thrown out is avoided, and the guarantee is provided for the accurate positioning of the throwing type recorder after the aircraft is lost.
Further, the insurance signal is generated by an insurance control box in the throwing recorder;
if the safety control box is inserted into the safety pin, the safety signal is invalid;
if the safety control box is not inserted into the safety pin, the safety signal is valid.
In a second aspect, the present invention provides a throwing type recorder that performs the throwing control conditions of the throwing control method in the first aspect. The throwing recorder comprises a separable component which is detachably arranged on the mounting frame, and a positioning module, a data storage module and a power module are arranged in the separable component.
The input end of the separable component is connected with a throwing control box, and a data receiving module and a signal receiving module are arranged in the throwing control box.
The output end of the data receiving module is connected with the flight parameter acquisition equipment, the output end of the data receiving module is connected with the data storage module of the separable component, and the data receiving module is used for receiving flight parameter data and sending the flight parameter data to the data storage module for storage.
The input end of the signal receiving module is connected with the aircraft seat system, the landing gear system and the inertial contactor and is used for receiving the throwing control signals output by the aircraft seat system, the landing gear system and the inertial contactor.
The output end of the signal receiving module is connected with a judging module, the judging module receives the throwing control signal, judges whether the throwing control condition is met according to the throwing control logic, generates a throwing separation signal if the throwing control condition is met, and starts a positioning starting signal.
Further, the throwing control box further comprises a self-checking module, wherein the self-checking module is connected with the data receiving module, the signal receiving module and the judging module and detects the data receiving module, the signal receiving module and the judging module.
Further, the throwing control box further comprises an alarm module, wherein the alarm module is connected with the power module in the separable assembly and used for monitoring the electric energy stored in the power module.
Further, the throwing control signals comprise a seat dislocation signal and a seat pull ring signal which are output by an airplane seat system, a right main wheel load signal which is output by a landing gear system and an inertial contactor signal which is output by an inertial contactor.
Further, the throwing recorder further comprises a safety control box assembly, the safety control box assembly comprises a safety control box and a safety bolt, the safety control box is connected with the judging module, and the safety control box is used for outputting a safety signal to the judging module.
Further, the separable assembly is also provided with a flash lamp module.
In a third aspect, the present invention provides a flight parameter recording system, including the throwing recorder of the second aspect, performing the throwing control condition of the throwing control method of the first aspect.
The flight parameter recording system further comprises a flight parameter collector, a flight parameter recorder and a cache recorder which are connected with the throwing control box.
Further, the flight parameter collector is connected with the throwing control box through an HDLC bus.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the throwing control conditions of the throwing type recorder are designed, so that the throwing type recorder can be accurately controlled, a throwing control signal is output and a positioning starting signal is started after the throwing type recorder reaches the set conditions, the abnormal throwing condition of the throwing type recorder is avoided, and the guarantee is provided for the accurate positioning of the throwing type recorder after the aircraft loses the fact.
2. Through improving the throwing type recorder, a signal receiving module is arranged in the throwing control box and used for receiving the throwing control signal from the aircraft, and meanwhile, through designing the judging module, the judging module judges the received throwing control signal and then generates a throwing separation signal and an opening positioning starting signal, so that the separable assembly is thrown and the positioning working mode is started. Through design warning module, in aircraft normal flight, monitor power module in the separable subassembly in real time, ensure power module's electric energy.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described. It is apparent that the drawings in the following description are only for the purpose of more clearly illustrating the embodiments of the present invention or the technical solutions in the prior art, and that other drawings can be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a flow chart of a method for controlling the throw of a throw recorder according to an embodiment of the present invention;
FIG. 2 is a block diagram of a throw-away recorder according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the connection of components of a flight parameter recording system in accordance with an embodiment of the present invention;
wherein 2, separable components; 3. throwing the control box; 4. a safety control box assembly; 201. a positioning module; 202. a data storage module; 203. a power module; 204. a flash lamp module; 301. a data receiving module; 302. a signal receiving module; 303. a judging module; 304. a self-checking module; 305. and an alarm module.
Detailed Description
The invention will be further described with reference to specific embodiments, and advantages and features of the invention will become apparent from the description. These examples are merely exemplary and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present invention may be made without departing from the spirit and scope of the present invention, but these changes and substitutions fall within the scope of the present invention.
In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The specific embodiment designs a throwing control method of a throwing recorder, as shown in fig. 1, the throwing control method comprises the following steps:
S1, setting up a throwing control condition according to a safety signal and a plurality of throwing control signals, wherein the throwing control signals comprise a seat pull ring signal, a seat dislocation signal, a right main wheel load signal and an inertial contactor signal;
the throwing control conditions comprise:
a. When the seat pull ring signal is effective, judging a seat dislocation signal, a safety signal and a right main wheel load signal, and if the seat dislocation signal is effective, the safety signal is effective and the right main wheel load signal is ineffective, judging that the throwing recorder needs to be thrown out and generating a throwing control signal;
or b, judging the insurance signal and the right main wheel load signal when the inertial contactor signal is effective, and judging that the throwing type recorder needs to be thrown out and generating a throwing control signal when the insurance signal is effective and the right main wheel load signal is ineffective.
In the step, a seat pull ring signal and a seat off-position signal are output by an aircraft seat system on an aircraft seat; the right main wheel load signal is output by a landing gear system on the landing gear; the inertial contactor signal (i.e., the drop-strike signal) is output by the inertial contactor.
In this step, the insurance signal is generated by an insurance control box in the throwing recorder. If the safety control box is inserted into the safety pin, the safety control box is disconnected from the throwing type recorder, and the safety control box does not output a safety signal to the throwing type recorder, so that the safety signal is invalid; if the safety control box is not inserted into the safety pin, the safety control box is connected with the throwing type recorder, and the safety control box does not output a safety signal to the throwing type recorder, so that the safety signal is effective.
S2, receiving the insurance signal and a plurality of throwing control signals, and judging the throwing control signals;
and S201, if the throwing control condition is met, a throwing separation signal is generated, and a positioning starting signal is started.
In this step, when any one of the above conditions a or b is satisfied, it is determined that the throwing recorder needs to be thrown, at this time, a throwing control signal is generated to throw the separable component of the throwing control box, and at the same time, an opening positioning start signal is sent to the separable component, so that the separable component starts to perform positioning work.
And S202, if the throwing control condition is not met, a throwing separation signal is not generated, and a positioning starting signal is not started.
In this step, when either of the cases a or b is not satisfied, it is determined that the throwing recorder does not need to be thrown, and at this time, neither a throwing control signal is generated nor a positioning start signal is turned on.
According to the invention, the throwing control conditions of the throwing type recorder are designed, so that the throwing type recorder can be accurately controlled, a throwing control signal is output and a positioning starting signal is started after the throwing type recorder reaches the set conditions, the abnormal throwing condition of the throwing type recorder is avoided, and the guarantee is provided for the accurate positioning of the throwing type recorder after the aircraft loses the fact.
The specific embodiment also designs a throwing type recorder, and the structure block diagram of the throwing type recorder is shown in fig. 2.
The throwing recorder comprises a detachable component 2, and the detachable component 2 is detachably arranged on the mounting frame. In this embodiment, the mounting frame is used to fix the detachable component 2, and may be fixed to the aircraft through the flange mounting hole, or other fixing methods may be adopted, and meanwhile, the material of the mounting frame may be selected arbitrarily, which is not limited herein.
As shown in fig. 2, the detachable component 2 is provided with a positioning module 201, a data storage module 202, and a power module 203.
Specifically, the positioning module 201 is configured to position the separable component 2 after the separable component 2 is thrown out. In this embodiment, the positioning module 201 preferentially selects the beidou beacon module, which has the functions of receiving RNSS and RDSS-S frequency points and transmitting RDSS-L frequency points, so that the separable component 2 can be searched according to the beidou positioning signal after being thrown and separated, and the positioning accuracy can be accurate to 20m.
The data storage module 202 is configured to receive and store various flight parameter data collected by the flight parameter collection device on the aircraft.
The power module 203 is configured to provide power to each module in the detachable module 2 after the detachable module 2 is thrown out, so as to determine the normal operation of each module in the detachable module 2.
As an improvement to the detachable component 2, as shown in fig. 2, a flash module 204 is further provided on the detachable component 2, and the flash module 204 is started after the detachable component 2 is thrown out.
As shown in fig. 2, the input end of the separable component 2 is connected with a throwing control box 3, the throwing control box 3 is one of core components of the throwing recorder, on one hand, a 28V direct current power supply is converted into a 12V power supply and an internal required power supply after being filtered, and spike voltage suppression, surge voltage suppression and energy storage functions are provided; on the other hand, a data receiving module 301, a signal receiving module 302, a judging module 303 and a self-checking module 304 are arranged in the throwing control box 3, and through mutual coordination among the modules, whether the separable assembly 2 needs throwing or not is accurately judged.
Specifically, as shown in fig. 2, an output end of the data receiving module 301 is connected to the flight parameter collecting device, an output end of the data receiving module 301 is connected to the data storage module 202 of the separable component 2, and the data receiving module 202 is configured to receive flight parameter data and send the flight parameter data to the data storage module 202 for storage.
As shown in fig. 2, the input end of the signal receiving module 302 is connected to the aircraft seat system, the landing gear system and the inertial contactor, and is used for receiving the throwing control signals output by the aircraft seat system, the landing gear system and the inertial contactor.
As shown in fig. 2, the output end of the signal receiving module 302 is connected to a judging module 303, the judging module 303 receives the throwing control signal, judges whether the throwing control condition is reached according to the throwing control method, generates a throwing separation signal if the throwing control condition is reached, and starts a positioning start signal.
In a preferred embodiment of the above-mentioned throwing control box, as shown in fig. 2, the throwing control box 3 further includes a self-checking module 304, where the self-checking module 304 is connected with the data receiving module 301, the signal receiving module 302, and the judging module 303, and detects the data receiving module 301, the signal receiving module 302, and the judging module 303, and the self-checking module 304 monitors each module in the throwing control box 3 in real time, so as to ensure that each module is in a normal working state.
In a preferred embodiment of the above-mentioned throwing control box, as shown in fig. 2, the throwing control box 3 further includes an alarm module 305, and the alarm module 305 is connected to the power module 203 in the detachable component 2, so as to monitor the electric energy stored in the power module 203.
Specifically, the throwing control signals received by the signal receiving module 302 include a seat release signal and a seat pull ring signal output by an aircraft seat system, a right main wheel load signal output by a landing gear system, and an inertial contactor signal output by an inertial contactor.
In a preferred embodiment of the above-mentioned throwing recorder, as shown in fig. 2, the throwing recorder further includes a safety control box assembly 4, wherein the safety control box assembly 4 includes a safety control box and a safety bolt, the safety control box is connected with the judging module 303, and the safety control box is used for outputting a safety signal to the judging module 303. In this embodiment, the safety control box assembly 4 is composed of two micro switches and a driving system, and the driving system comprises a safety bolt, a limit groove and a spring piece. After the safety bolt is inserted into the safety control box, the safety bolt pushes the elastic sheet in the limit groove, so that the elastic sheet presses the micro switch, and the micro switch acts to disconnect the safety control box from the judging module 303, so that current is prevented from flowing.
Through the setting of the safety control box assembly 4, the risk of 2 times abnormal throwing of the separable assembly caused by misoperation can be avoided, for example, when an aircraft is parked or overhauled on the ground, if the safety control box is not disconnected from the judging module 303, a safety signal can be output to the judging module 303, so that the judging module 303 makes an erroneous judgment. After the safety bolt is inserted into the safety control box, the safety control box can be disconnected with the judging module 303, the judging module 303 cannot possibly receive the safety signal, the situation of misjudgment of the judging module 303 can be avoided, misinitiation is prevented, and the safety function is achieved.
The specific embodiment also provides a flight parameter recording system, which comprises the throwing type recorder and executes the throwing control conditions of the throwing control method.
The flight parameter recording system comprises an inertial contactor, a landing gear system, an airplane seat system, a flight parameter collector, a flight parameter recorder and a cache recorder, wherein the flight parameter collector, the flight parameter recorder and the cache recorder are connected with the throwing control box. The connection mode and signal transmission of each component of the flight parameter recording system and the throwing control box are shown in fig. 3, and meanwhile, in the specific real-time mode, the flight parameter collector and the throwing control box are preferentially connected through an HDLC bus, and in design, the flight parameter collector is internally provided with an HDLC advanced data link of a host computer module and is connected with the throwing control box through the HDLC bus so as to meet and ensure the transmission of data of the flight parameter collector.
In this embodiment, the throwing of the separable assembly 2 of the throwing control box takes the following forms: the separable component 2 is thrown in the event of a disaster such as an aircraft striking the ground or the water surface, an air collision or explosion, and the last data before the aircraft crashes is recorded as much as possible; the separable assembly 2 is not thrown during non-catastrophic events such as hard landing, tail strike, normal service; the two throwing modes are judged according to throwing control conditions of the throwing control method.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The throwing control method of the throwing recorder is characterized by comprising the following steps of:
S1, setting up a throwing control condition according to a safety signal and a plurality of throwing control signals, wherein the throwing control signals comprise a seat pull ring signal, a seat dislocation signal, a right main wheel load signal and an inertial contactor signal;
The throwing control conditions comprise:
When the seat pull ring signal is effective, judging a seat dislocation signal, a safety signal and a right main wheel load signal, and if the seat dislocation signal is effective, the safety signal is effective and the right main wheel load signal is ineffective, judging that the throwing type recorder needs to be thrown out and generating a throwing control signal, wherein the safety signal is generated by a safety control box in the throwing type recorder; if the safety control box is inserted into the safety pin, the safety signal is invalid; if the safety control box is not inserted into the safety pin, the safety signal is valid;
Or when the inertial contactor signal is effective, judging the insurance signal and the right main wheel load signal, and if the insurance signal is effective and the right main wheel load signal is ineffective, judging that the throwing type recorder needs to be thrown out and generating a throwing control signal;
S2, receiving the insurance signal and a plurality of throwing control signals, and judging the throwing control signals;
s201, if the throwing control condition is met, a throwing separation signal is generated, and a positioning starting signal is started;
And S202, if the throwing control condition is not met, a throwing separation signal is not generated, and a positioning starting signal is not started.
2. A throwing type recorder which performs the throwing control condition of the throwing control method according to claim 1, characterized in that: the throwing recorder comprises a separable component and a safety control box component, wherein the separable component is detachably arranged on the mounting frame, and a positioning module, a data storage module and a power supply module are arranged in the separable component;
The input end of the separable component is connected with a throwing control box, and a data receiving module and a signal receiving module are arranged in the throwing control box;
the output end of the data receiving module is connected with the flight parameter acquisition equipment, the output end of the data receiving module is connected with the data storage module of the separable component, and the data receiving module is used for receiving flight parameter data and sending the flight parameter data to the data storage module for storage;
the input end of the signal receiving module is connected with the aircraft seat system, the landing gear system and the inertial contactor and is used for receiving throwing control signals output by the aircraft seat system, the landing gear system and the inertial contactor;
The output end of the signal receiving module is connected with a judging module, the judging module receives the throwing control signal, judges whether the throwing control condition is met according to the throwing control logic, generates a throwing separation signal if the throwing control condition is met, and starts a positioning starting signal;
The safety control box assembly comprises a safety control box and a safety bolt, wherein the safety control box is connected with the judging module and is used for outputting a safety signal to the judging module.
3. The throw-away recorder of claim 2, wherein: the throwing control box further comprises a self-checking module, wherein the self-checking module is connected with the data receiving module, the signal receiving module and the judging module and detects the data receiving module, the signal receiving module and the judging module.
4. The throw-away recorder of claim 2, wherein: the throwing control box further comprises an alarm module, wherein the alarm module is connected with the power module in the separable assembly and used for monitoring electric energy stored in the power module.
5. The throwing recorder of any one of claims 2 to 4, wherein: the throwing control signals comprise a seat dislocation signal and a seat pull ring signal which are output by the aircraft seat system, a right main wheel load signal which is output by the landing gear system and an inertial contactor signal which is output by the inertial contactor.
6. The throwing recorder of any one of claims 2 to 4, wherein: the separable assembly is also provided with a flash lamp module.
7. A flight parameter recording system, characterized by comprising the throwing recorder according to any one of claims 2 to 6, executing the throwing control condition of the throwing control method according to claim 1;
the flight parameter recording system further comprises a flight parameter collector, a flight parameter recorder and a cache recorder which are connected with the throwing control box.
8. The flight parameter recording system of claim 7, wherein: and the flight parameter collector is connected with the throwing control box through an HDLC bus.
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| CN114537668B (en) * | 2022-04-26 | 2022-09-09 | 成都凯天电子股份有限公司 | Locking and ejecting mechanism of throwing type flight parameter recorder and control method thereof |
| CN115240474A (en) * | 2022-07-13 | 2022-10-25 | 陕西千山航空电子有限责任公司 | Flight parameter sending recording system |
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