CN109733626A - A kind of alarm of amphibious aircraft hatch door and instruction system - Google Patents
A kind of alarm of amphibious aircraft hatch door and instruction system Download PDFInfo
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- CN109733626A CN109733626A CN201811344717.2A CN201811344717A CN109733626A CN 109733626 A CN109733626 A CN 109733626A CN 201811344717 A CN201811344717 A CN 201811344717A CN 109733626 A CN109733626 A CN 109733626A
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Abstract
The invention discloses a kind of alarms of amphibious aircraft hatch door and instruction system, it is characterized by: hatch door lock sensor (105) acquires each hatch door locking state, undercarriage wheel carries signalling means (106) and acquires undercarriage wheel load state, engine throttle angular transducer (107) obtains engine power state by acquisition engine throttle angle, flap angle sensor (108) obtains whether wing flap is in takeoff setting by acquisition flap angle, elevator Tiao Xiao mechanism (109) sends Tiao Xiao mechanism neutral position signal, wheel linear velocity trans (113) acquisition aircraft master plays wheel linear velocity；Collector (102) acquires the sensor signal.The present invention is able to solve the problem of opened door triggering false-alarm when amphibious aircraft executes water surface task, avoids false-alarm effectively to reduce work load when unit executes water surface task, and meet the requirement of the civilian airworthiness regulation of China.
Description
Technical field
The present invention relates to the hatch door alarms that avionics system design field more particularly to a kind of amphibious aircraft fly
With instruction system.
Background technique
The 783rd article of the airplane in transportation category airworthiness standard CCAR-25-R4 (e) that Civil Aviation Administration of China promulgates " guard by warning
Indicated with prompt " requirement of alarm device is proposed to the bay door system of aircraft.But this airworthiness regulation requires to fly only for continental rise
Machine proposes following requirement:
Before the starting heats initial period or in the starting heats initial period, such as any hatch door does not close completely
Close, lock bolt and locking and its opening may interfere with safe take-off or landing of making a return voyage, then must be alerted to driver's acoustics.It is any
Hatch door is not completely turned off, the hatch door of lock bolt and locking needs to visually indicate for each operator is high-visible.
For land airplane, usually whether sliding run most can be entered as identification aircraft according to undercarriage wheel linear velocity
The foundation of first stage configuration, when flight unit occurs answering when the alarm that hatch door does not lock indicates in the sliding initial period discovery aircraft that runs
Sliding race task is terminated immediately and corresponding hatch door is checked.
However, amphibious aircraft have it is land take off and the water surface takes off two different modes of taking off, when amphibious
Its undercarriage is maintained at collapsed state when aircraft is in surface condition, and aircraft, which enters the starting heats stage, will not generate undercarriage machine
Take turns linear velocity.And amphibious aircraft is generally in the water surface tasks execution phases when being in surface condition, to ensure that aircraft is in office
The lasting normal work of complete each electricity system of machine, engine are generally in idle power rating, are different from when the business execution stage
Land airplane starts the use pattern that engine starts sliding race again before take-off.
Secondly, amphibious aircraft would generally execute the special duties such as water surface search, rescue and detection, cabin in the water surface stage
Opening for door often carries out when necessarily flight unit executes water surface task, and in flight unit normal operating as expected,
And the usually more land airport of aquatic environment is severe, pilot must be absorbed in aquatic environment at this time observation and aircraft are in water surface shape
State executes the operation of the tasks such as searching rescue, should not trigger unnecessary alarm to the opening operation that hatch door executes and indicate, to keep away
Exempt from the judgement and operation of interfering flight unit to aircraft state.
In addition, amphibious aircraft under surface condition due to task execution needs and the objective environments such as water surface surge because
Element, movement are inevitable, therefore according to parameters such as wheel linear velocity, engine speed, air speed, ground velocity and body postures
Judge whether amphibious aircraft enters the cunning race stage before the water surface takes off, be difficult to meet amphibious aircraft use mould
What formula and airworthiness regulation required.
The hatch door that amphibious aircraft does not lock if it exists when surface condition is taken off, natural surge and body slide generation
Surge will lead to body water inlet, because in aircraft have electrical equipment and task related personnel, body water inlet may influence task
Execution, airborne equipment operation, aircraft weight and the center of gravity of airplane, or even catastrophic effect is caused to aircraft.Therefore, it develops a kind of full
The requirement of sufficient civil aircraft airworthiness regulation, meets aircraft safety landing demand and do not influence water surface task execution is suitable for land and water two
Dwell aircraft hatch door alarm and instruction device with regard to very necessary.
Summary of the invention
Object of the present invention is to propose the hatch door alarm and instruction system of a kind of amphibious aircraft, related fit can met
While boat regulations require the alarm and instruction of bay door system, amphibious aircraft is solved before surface condition is taken off to hatch door
The alarm instruction interference flight unit of the normally-open generation of the alarm problem and hatch door of state executes asking for water surface task
Topic.
The technical scheme is that a kind of system and device alerted suitable for amphibious aircraft hatch door with instruction, system
Processor 101, collector 102, air data system 103, radio altimeter 104, hatch door lock sensor 105, undercarriage
Wheel load signalling means 106, engine throttle angular transducer 107, flap angle sensor 108, elevator Tiao Xiao mechanism 109, machine
Take turns linear velocity trans 113, warning light 110, display 111 and audio frequency broadcast system 112, it is characterised in that: hatch door locking passes
Sensor 105 acquires each hatch door locking state, and undercarriage wheel carries signalling means 106 and acquires undercarriage wheel load state, engine throttle angle
It spends sensor 107 and engine power state is obtained by acquisition engine throttle angle, flap angle sensor 108 passes through acquisition
Flap angle obtains whether wing flap is in takeoff setting, and elevator Tiao Xiao mechanism 109 sends Tiao Xiao mechanism neutral position signal, machine
Wheel linear velocity trans 113 acquire aircraft master and play wheel linear velocity；Collector 102 acquires the sensor signal, atmosphere data
System 103 acquires airspeed signal, and radio altimeter 104 acquires aircraft altitude signal；System processor 101 receives collector
102, the signal of air data system 103 and radio altimeter 104 identifies hatch door alarm status after carrying out integrated treatment, drives
Dynamic warning light 110, display 111 and audio frequency broadcast system 112 issue alarm and indicate with system mode.
Preferably, the system processor 101 and collector 102, air data system 103 and radio altimeter 104
Crosslinking, wherein collector 102 and hatch door lock sensor 105, undercarriage wheel carry signalling means 106, engine throttle angle sensor
Device 107, flap angle sensor 108 and elevator Tiao Xiao mechanism 109 are crosslinked；System processor 101 is by receiving atmosphere data
The data of system 103, radio altimeter 104 and collector 102 can obtain aircraft required for hatch door warning system in real time
Parameters, and hatch door alarm instruction and cabin that aircraft should be supplied to unit under current configuration are calculated after integrated treatment in real time
Door state instruction；System processor 101 and warning light 110, display 111 and audio frequency broadcast system 112 are crosslinked, by processing result
To respectively drive warning light 110, display 111 and audio frequency broadcast system 112 by signal format appropriate, mentioned for flight unit
The master of alarm status and location information for hatch door visually indicates, visual information indicates and audible indication.
Preferably, the collector 102 carries signalling means 106, hair by acquisition hatch door lock sensor 105, undercarriage wheel
Motivation gasoline throttle angle sensor 107, flap angle sensor 108, elevator Tiao Xiao mechanism 109 neutral signal and warning light
110 push button signallings obtain aircraft parameters and alarm inhibits operation signal, and are sent the parameter of acquisition by data/address bus
System processor 101, the identification for processor pair hatch door alarm status and instruction；The collector 102 can be according to aircraft
Each system actual arrangement situation is installed depending on feelings in signal collected source, to reduce the signal collected influence being disturbed, together nearby
When reduce cable length.
Preferably, air data system 103 acquires aircraft airspeed signal in real time, sends calculating air speed after being corrected calculating
Judgment basis of the system processor 101 for hatch door alarm logic；The radio altimeter 104 is real-time by radioecho
The difference in height of aircraft and ground or the water surface is calculated, and data Transmission system processor 101 is used for the judgement of hatch door alarm logic
Foundation.
Preferably, it is driven by system processor 101, is lighted when system processor 101 recognizes hatch door alarm status, be
The master that unit provides hatch door alarm visually indicates；The display 111 receives the vision signal of system processor 101, aobvious in real time
Show the locking state of each hatch door of aircraft, and indicates the hatch door specific location alerted when there is hatch door alarm for unit；Sound
Frequency play system 112 receives the audio signal of system processor 101, provides audible indication when alarm occurs for unit.
Preferably, when aircraft nose landing gear, left main landing gear and right landing gear wheel load state are ground state, then sentence
Determine aircraft and is in the state of ground；At this point, system processor 101 monitors wheel linear velocity data, when wheel linear velocity is not zero
Think the coast period that aircraft enters before taking off, the non-locking state of any hatch door can be identified as hatch door within this stage
Alarm.
Preferably, when aircraft nose landing gear, left main landing gear and any wheel load state of right landing gear be vacant state, and fly
Machine calculates air speed and is less than V1, V1Take off decision speed, and aircraft radio height is less than H0, H0Aircraft is under surface condition most
Radio altitude when small take-off weight then determines that aircraft is in surface condition；At this point, system processor 101 monitors engine
Gasoline throttle angle, flap angle and elevator Tiao Xiao mechanism neutral condition signal, when engine throttle angle be in take-off power and
Flap angle is in take off gear and elevator Tiao Xiao mechanism when being neutral condition, i.e. judgement aircraft enters the cunning before the water surface takes off
Row order section, the non-locking state of any hatch door can be identified as hatch door alarm within this stage；When aircraft in surface condition and
When not entering the coast period before the water surface takes off, the unlatching of hatch door will not be identified as alerting.
Preferably, when aircraft is not at the state of ground and surface condition, then determine that aircraft is in airborne status, this is former
The non-locking state of meaning hatch door can be identified as hatch door alarm by system processor 101；When system processor 101 recognizes hatch door
When alarm, system processor 101 issues light flash with high level signal driving warning light 110 and indicates.Warning light 101 is that can press
Pressure type indicator light, collector 102 acquire the pressing signal of warning light 101, warning light can be made to extinguish by pressing the warning light；
When system processor 101 recognizes hatch door alarm, system processor 101 drives audio frequency broadcast system with analog audio signal
112 issue the audible indication of alarm, can audible indication immediately by pressing the warning light.
Preferably, the video signal output interface of system processor 101 connects display 111, when system processor 101 is known
When being clipped to hatch door and being unlocked, hatch door status display area over the display is with green text or figure real-time display
The locking state of corresponding hatch door；When system processor 101 determines that a certain hatch door is in alarm status, hatch door over the display
Status display area is believed with red or amber text or the non-locking state of the corresponding hatch door of figure real-time display in alarm
Breath region shows the text information of corresponding hatch door alarm.
The invention has the following advantages:
1) solve it is amphibious under land and surface condition enter the preflight taxiing stage before be both needed to provide hatch door alarm
The problem of；
2) unnecessary hatch door alarm is avoided to interfere or increase unit when amphibious aircraft executes water surface task
Add unit work load.
Detailed description of the invention
Fig. 1 is system composite structural diagram.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The embodiment of the present invention proposes the hatch door alarm and instruction system of a kind of amphibious aircraft, can meet related fit
Regulations of navigating solve amphibious aircraft before surface condition is taken off to cabin under the premise of requiring the alarm and instruction of bay door system
The alarm problem of door state, while solving to alert instruction interference flight unit execution water surface task caused by hatch door is normally-open
Problem.
There is provided a kind of alarm of amphibious aircraft hatch door and instruction system, comprising: system processor, collector, big destiny
Signalling means, engine throttle angular transducer, wing flap are carried according to system, radio altimeter, hatch door lock sensor, undercarriage wheel
Angular transducer, elevator Tiao Xiao mechanism, wheel linear velocity trans, warning light, display and audio frequency broadcast system.
System processor of the present invention is the core processing unit of the embodiment of the present invention, the processor and collector, big
Gas data system and radio altimeter crosslinking, wherein collector and door locking sensor, undercarriage wheel carry signalling means, engine
Gasoline throttle angle sensor, flap angle sensor and the crosslinking of elevator Tiao Xiao mechanism.System processor is by receiving atmosphere data
The data of system, radio altimeter and collector can obtain aircraft parameters required for hatch door warning system in real time,
And calculated in real time after integrated treatment aircraft should be supplied under current configuration unit hatch door alarm instruction and hatch door state refer to
Show.System processor and warning light, display and audio frequency broadcast system are crosslinked, can be by processing result to pass through signal lattice appropriate
Formula respectively drives warning light, display and audio frequency broadcast system, provides the alarm status and location information of hatch door for flight unit
Master visually indicate, visual information instruction and audible indication.
Collector of the present invention carries signalling means, engine throttle angle by acquisition hatch door lock sensor, undercarriage wheel
It spends sensor, flap angle sensor, the neutral signal of elevator Tiao Xiao mechanism and warning light push button signalling and obtains aircraft items
Parameter and alarm inhibit operation signal, and the parameter of acquisition is sent system processor by data/address bus, are used for processor pair
The identification of hatch door alarm status and instruction.The collector can adopted according to each system actual arrangement situation of aircraft depending on feelings
Collection signal source is installed nearby, to reduce the signal collected influence being disturbed, while reducing cable length.
Air data system of the present invention acquires aircraft airspeed signal in real time, will calculate air speed transmission after being corrected calculating
Judgment basis of the system processor for hatch door alarm logic；The radio altimeter is calculated in real time by radioecho to fly
The difference in height of machine and ground or the water surface, and data Transmission system processor is used for the judgment basis that hatch door alerts logic.
Warning light of the present invention is driven by system processor, when system processor recognizes hatch door alarm status time point
Bright, the master for providing hatch door alarm for unit visually indicates；Display described in present example receives the video letter of system processor
Number, the locking state of each hatch door of real-time display aircraft, and the hatch door tool alerted when there is hatch door alarm for unit instruction
Body position；Audio frequency broadcast system receives the audio signal of system processor, provides audible indication when alarm occurs for unit.
It is the structural schematic diagram of hatch door alarm and one embodiment of instruction system provided by the invention referring to Fig. 1.
The embodiment of the present invention provides a kind of alarm of amphibious aircraft hatch door and instruction system, comprising: system processor
101, collector 102, air data system 103, radio altimeter 104, hatch door lock sensor 105, undercarriage wheel information carrying
Number device 106, engine throttle angular transducer 107, flap angle sensor 108, elevator Tiao Xiao mechanism 109, wheel linear speed
Spend sensor 113, warning light 110, display 111 and audio frequency broadcast system 112.
Collector described in the embodiment of the present invention passes through acquisition hatch door lock sensor 105, undercarriage wheel carries signalling means 106,
Engine throttle angular transducer 107, flap angle sensor 108, elevator Tiao Xiao mechanism 109, wheel linear velocity trans
113 and warning light 110 obtain aircraft parameters, and the parameter of acquisition is sent by system processor by data/address bus.
System processor 101 receives collector 102, air data system 103 and radio altimeter by data/address bus
104 data.By receiving 102 data of collector, system processor 101 obtains the locking shape of each hatch door lock sensor of aircraft
State signal, each undercarriage wheel load state, engine throttle angle parameter, flap angle parameter, elevator Tiao Xiao mechanism neutrality letter
Number, wheel linear velocity and warning light inhibit signal.By receiving 103 data of air data system, system processor 101 obtains meter
Calculate air speed parameter.By receiving 104 data of radio altimeter, system processor 101 obtains the radio altitude data of aircraft.
When the left main landing gear of aircraft and right landing gear wheel load state are ground state, then determine that aircraft is in ground planar
State.At this point, system processor 101 monitors the wheel linear velocity data of left main landing gear and right landing gear, when either side wheel line
The coast period that aircraft enters before taking off is thought when speed is not zero, the non-locking state of any hatch door can within this stage
It is identified as hatch door alarm.
When the left main landing gear of aircraft and any wheel load state of right landing gear are vacant state, and aircraft calculates air speed and is less than V1
Take off decision speed, and aircraft radio height is less than H0Aircraft is in radio height when minimum take-off weight under surface condition
Degree, then determine that aircraft is in surface condition.At this point, system processor 101 monitors engine throttle angle, flap angle and lifting
Duo Tiaoxiao mechanism neutral condition signal is in take off gear and liter when engine throttle angle is in take-off power and flap angle
When Jiang Duotiaoxiao mechanism is neutral condition, i.e. judgement aircraft enters the coast period before the water surface takes off, any cabin within this stage
The non-locking state of door can be identified as hatch door alarm.When aircraft in surface condition and does not enter and slides rank before the water surface takes off
Duan Shi, the unlatching of hatch door will not be identified as alerting.
When aircraft is not at the state of ground and surface condition, then determine that aircraft is in airborne status, at this time any hatch door
Non- locking state can be identified as by system processor 101 hatch door alarm.
When system processor 101 recognizes hatch door alarm, system processor 101 drives warning light with high level signal
110 issue light flash instruction.Warning light 101 is pressable formula indicator light, and collector 102 acquires the pressing letter of warning light 101
Number, warning light can be made to extinguish by pressing the warning light.
When system processor 101 recognizes hatch door alarm, system processor 101 is broadcast with analog audio signal driving audio
Place system 112 issues the audible indication of alarm, can inhibit audible indication immediately by pressing the warning light.
The video signal output interface of system processor 101 connects display 111, when system processor 101 recognizes cabin
When door is unlocked, hatch door status display area over the display is with green text or the corresponding cabin of figure real-time display
The locking state of door；When system processor 101 determines that a certain hatch door is in alarm status, hatch door state over the display is aobvious
Show region with red or amber text or the non-locking state of the corresponding hatch door of figure real-time display, and in warning information region
Show the text information of corresponding hatch door alarm.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (9)
1. a kind of amphibious aircraft hatch door alarm and instruction system, including system processor (101), collector (102), atmosphere
Data system (103), radio altimeter (104), hatch door lock sensor (105), undercarriage wheel carry signalling means (106), hair
Motivation gasoline throttle angle sensor (107), flap angle sensor (108), elevator Tiao Xiao mechanism (109), wheel linear velocity pass
Sensor (113), warning light (110), display (111) and audio frequency broadcast system (112), it is characterised in that: hatch door locking sensing
Device (105) acquires each hatch door locking state, and undercarriage wheel carries signalling means (106) and acquires undercarriage wheel load state, engine throttle
Angular transducer (107) obtains engine power state by acquisition engine throttle angle, and flap angle sensor (108) is logical
It crosses acquisition flap angle and obtains whether wing flap is in takeoff setting, elevator Tiao Xiao mechanism (109) sends Tiao Xiao mechanism neutral position
Confidence number, wheel linear velocity trans (113) acquisition aircraft master play wheel linear velocity；Collector (102) acquires the sensor
Signal, air data system (103) acquire airspeed signal, and radio altimeter (104) acquires aircraft altitude signal；System processing
Machine (101) receives the signal of collector (102), air data system (103) and radio altimeter (104), carries out General Office
Identify hatch door alarm status after reason, driving warning light (110), display (111) and audio frequency broadcast system (112) issue alarm and
System mode instruction.
2. the system as claimed in claim 1, it is characterised in that: the system processor (101) and collector (102), atmosphere
Data system (103) and radio altimeter (104) crosslinking, wherein collector (102) and hatch door lock sensor (105), rise
Fall frame wheel load signalling means (106), engine throttle angular transducer (107), flap angle sensor (108) and elevator tune effect
Mechanism (109) crosslinking；System processor (101) is by receiving air data system (103), radio altimeter (104) and adopting
The data of storage (102) can obtain aircraft parameters required for hatch door warning system in real time, and real after integrated treatment
When calculate aircraft should be supplied under current configuration unit hatch door alarm instruction and hatch door state instruction；System processor
(101) it is crosslinked with warning light (110), display (111) and audio frequency broadcast system (112), by processing result with signal appropriate
Format respectively drives warning light (110), display (111) and audio frequency broadcast system (112), provides the announcement of hatch door for flight unit
The master of alert state and location information visually indicates, visual information instruction, audible indication and hatch door position instruction.
3. the system as claimed in claim 1, it is characterised in that: the collector (102) passes through acquisition hatch door lock sensor
(105), undercarriage wheel carries signalling means (106), engine throttle angular transducer (107), flap angle sensor (108), rises
The neutral signal and warning light (110) push button signalling of Jiang Duotiaoxiao mechanism (109) obtain aircraft parameters and alarm inhibits behaviour
Make signal, and the parameter of acquisition is sent by system processor (101) by data/address bus, is used for processor pair hatch door alarm status
With the identification of instruction；The collector (102) can be according to each system actual arrangement situation of aircraft, depending on feelings in signal collected source
Installation nearby, to reduce the signal collected influence being disturbed, while reducing cable length.
4. the system as claimed in claim 1, it is characterised in that: air data system (103) acquires aircraft airspeed signal in real time,
Air speed will be calculated by, which being corrected after calculating, sends the judgment basis of system processor (101) for hatch door alarm logic；It is described wireless
Electrical height table (104) calculates the difference in height of aircraft and ground or the water surface by radioecho in real time, and by data Transmission system
Judgment basis of the processor (101) for hatch door alarm logic.
5. the system as claimed in claim 1, it is characterised in that: driven by system processor (101), work as system processor
(101) it is lighted when recognizing hatch door alarm status, the master for providing hatch door alarm for unit visually indicates；The display (111)
The vision signal of reception system processor (101), the locking state of each hatch door of real-time display aircraft, and when there is hatch door alarm
The hatch door specific location alerted is indicated for unit；Audio frequency broadcast system (112) receives the audio letter of system processor (101)
Number, audible indication is provided when alarm occurs for unit.
6. the system as claimed in claim 1, it is characterised in that: when the left main landing gear of aircraft and right landing gear wheel load state are
When ground state, then determine that aircraft is in the state of ground；At this point, system processor (101) monitors left main landing gear and lesser
The wheel linear velocity data of frame think the coast period that aircraft enters before taking off when any wheel linear velocity is not zero,
The non-locking state of any hatch door can be identified as hatch door alarm in this stage.
7. the system as claimed in claim 1, it is characterised in that: when the left main landing gear of aircraft and any wheel load state of right landing gear
For vacant state, and aircraft calculates air speed and is less than V1, and V1 is the decision speed that takes off, and aircraft radio height is less than H0, and H0 is
Aircraft is in radio altitude when minimum take-off weight under surface condition, then determines that aircraft is in surface condition；At this point, system
Processor (101) monitors engine throttle angle, flap angle and elevator Tiao Xiao mechanism neutral condition signal, works as engine oil
Door angle, which be in take-off power and flap angle and is in, takes off gear and when elevator Tiao Xiao mechanism is neutral condition, that is, determines winged
Machine enters the coast period before the water surface takes off, and the non-locking state of any hatch door can be identified as hatch door announcement within this stage
It is alert；When aircraft is in surface condition and when not entering the coast period before the water surface takes off, the unlatching of hatch door will not be identified as alerting.
8. the system as claimed in claim 1, it is characterised in that: when aircraft is not at the state of ground and surface condition, then sentence
Determine aircraft and be in airborne status, the non-locking state of any hatch door can be identified as hatch door announcement by system processor (101) at this time
It is alert；When system processor (101) recognizes hatch door alarm, system processor (101) drives warning light with high level signal
(110) light flash instruction is issued；Warning light (101) is pressable formula indicator light, and collector (102) acquires warning light (101)
Pressing signal, warning light can be made to extinguish by pressing the warning light；When system processor (101) recognizes hatch door alarm
When, system processor (101) issues the audible indication of alarm with analog audio signal driving audio frequency broadcast system (112), passes through
Pressing the warning light can audible indication immediately.
9. the system as claimed in claim 1, it is characterised in that: the video signal output interface of system processor (101) connects
Display (111), when system processor (101), which recognizes hatch door, to be unlocked, hatch door state over the display
Display area is with green text or the locking state of the corresponding hatch door of figure real-time display；When system processor (101), judgement is a certain
When hatch door is in alarm status, hatch door status display area over the display is real-time with red or amber text or figure
It shows the non-locking state of corresponding hatch door, and shows the text information of corresponding hatch door alarm in warning information region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811344717.2A CN109733626B (en) | 2018-11-12 | 2018-11-12 | Amphibious aircraft cabin door alarm and indication system |
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|---|---|---|---|
| CN201811344717.2A CN109733626B (en) | 2018-11-12 | 2018-11-12 | Amphibious aircraft cabin door alarm and indication system |
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| CN109733626A true CN109733626A (en) | 2019-05-10 |
| CN109733626B CN109733626B (en) | 2023-06-30 |
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| CN113955086A (en) * | 2021-11-03 | 2022-01-21 | 哈尔滨哈飞航空工业有限责任公司 | Method for judging air-ground state of airplane |
| CN115626291A (en) * | 2022-09-30 | 2023-01-20 | 中航通飞华南飞机工业有限公司 | Indication and alarm system for water injection cabin door of fixed-wing fire-extinguishing aircraft |
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| CN112389668B (en) * | 2020-11-10 | 2022-03-15 | 中航通飞华南飞机工业有限公司 | Unpowered landing method for large amphibious aircraft |
| CN113955086A (en) * | 2021-11-03 | 2022-01-21 | 哈尔滨哈飞航空工业有限责任公司 | Method for judging air-ground state of airplane |
| CN113955086B (en) * | 2021-11-03 | 2023-05-23 | 哈尔滨哈飞航空工业有限责任公司 | Method for judging air-ground state of airplane |
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