JP2000185695A - Automatic take-off stoppage determination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic take-off stoppage determination system capable of automatically determining whether stoppage of take-off is correct or incorrect when abnormality occurs for a pilot to speedily take take-off stopping action. SOLUTION: In an automatic take-off stoppage determination system, a data base system 8 in which various sorts of information of an airport are stored, a sensor system 1 to obtain various sorts of information from various sensors installed on an aircraft, a take-off stoppage determination system 4 to determine if stoppage of take-off is correct or incorrect based on the various sorts of information of the airport stored in the data base system 8 and the various sorts of information obtained by the sensor system 1, and a display system to display result of determination by the take-off stoppage determination system 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic take-off stop judging system.

[0002]

2. Description of the Related Art In a conventional aircraft, for example, a passenger aircraft, an in-flight flight control computer calculates a takeoff decision speed V1 from parameters such as engine thrust and runway in order to determine whether or not to take off. Display was done. The takeoff decision speed V1 is a speed at which the aircraft can safely stop on the runway if the speed of the aircraft is stopped if the speed during takeoff is lower than V1. Therefore, the determination and operation of the takeoff stop were performed in the following procedure after the occurrence of the abnormality. 1. An error is displayed on the instruments and display devices around the cockpit. 2. The pilot recognizes the abnormality, and checks the degree of the abnormality, the surrounding conditions, and whether the speed of the aircraft is equal to or lower than V1. 3. If the speed is V1 or less, stop takeoff, perform the necessary operations to stop takeoff, and stop the aircraft. If it is determined that the takeoff is to be continued, an operation for continuing the takeoff is performed.

[0003]

However, such a takeoff suspension system has the following problems. That is, the pilot (human) confirms an abnormality using instruments and display devices around the cockpit, and after recognizing the abnormality, V1.
It takes a certain amount of time before taking off operation to confirm takeoff and take off operation. In addition, depending on the pilot, there may be a case where a takeoff stop determination is made by determining that a normally operating device is abnormal because safety is a priority.

[0004] It is an object of the present invention to provide an automatic take-off stop determination system that automatically determines a take-off stop and enables a pilot to quickly perform a take-off stop operation.

[0005]

According to a first aspect of the present invention, there is provided a database system in which various information of an airport is stored, a sensor system for acquiring various information from various sensors attached to an aircraft, A takeoff suspension determination system that determines whether takeoff suspension is correct based on various airport information stored in the database system and various types of information acquired by the sensor system, and a display system that displays a determination result by the takeoff suspension determination system And an automatic take-off stop determination system.

According to a second aspect of the present invention, the various types of information acquired by the sensor system include ground speed, wind direction, wind speed,
2. The system according to claim 1, further comprising: a residual thrust after an engine cutoff, an effective remaining runway length, a runway surface condition, own weight, a tire pressure, and a reverse injection thrust.

According to a third aspect of the present invention, the various airport information stored in the database system includes an inclination, an altitude,
The automatic take-off cancellation determination system according to claim 1 or 2, wherein the automatic take-off stop determination system includes presence / absence of an emergency landing and an extension obstacle.

According to a fourth aspect of the present invention, the database system further stores a take-off suspension determination threshold value, and the take-off suspension determination system determines the airport take-off and the take-off suspension determination. 4. An automatic take-off suspension determination system according to claim 3, wherein the automatic take-off suspension determination system determines whether the take-off suspension is correct or not based on a comparison result with a threshold value.

According to a fifth aspect of the present invention, the takeoff suspension determination system calculates a braking distance based on various types of information acquired by the sensor system and various airport information stored in the database system. A difference between the effective remaining runway length obtained by the sensor system and the braking distance,
5. The automatic take-off suspension determination system according to claim 4, wherein the automatic take-off suspension determination threshold value is compared with the take-off suspension determination threshold.

That is, the present invention provides a flight management system used for an aircraft, which automatically determines the possibility of stopping on a runway when an abnormal condition of the aircraft occurs during takeoff run,
This allows the pilot to instantly decide whether to stop or continue takeoff and control the aircraft.

[0011]

FIG. 1 shows a schematic configuration of an embodiment of the present invention. The automatic take-off suspension determination system shown in FIG. 1 uses the information obtained from various sensor systems 1 attached to the aircraft and various airport information stored in the internal database 8 to determine the runway distance required for an emergency stop. Is calculated, and the safety of the take-off stop is determined based on the calculated value. If it is determined that the stop can be safely performed, the take-off stop determination system 4 that semi-automatically stops the aircraft is provided.

FIG. 2 shows a detailed configuration diagram of a semi-automatic takeoff system according to an embodiment of the present invention. In the figure, a pilot 5 inputs a takeoff start and course instruction signal 113 to the flight control computer 3. The flight control computer 3 outputs a course instruction signal 115 to the take-off operation monitoring system 9. The flight control computer 3 outputs a takeoff operation start signal 116 to the takeoff operation control system 10.
The take-off operation control system 10 outputs the take-off operation control signal 119.
The engine control system 11 and the hydraulic control system 12
Output to The engine control system 11 outputs an engine control signal 120 to the engine system. The hydraulic control system 12 outputs a steering control signal 121 to a steering system.

The sensor system 1 outputs takeoff-related information 114 to the takeoff operation monitoring system 9 among the sensor information signals 101 obtained from various sensors attached to the aircraft. The take-off operation monitoring system 9 outputs the course difference signal 1
17 is output to the flight control computer 3. The flight control computer 3 outputs a takeoff operation correction signal 118 to the takeoff operation control system 10.

The sensor system 1 outputs an aircraft abnormality related information signal 102 to the abnormality detection system 2 among the sensor information signals 101 obtained from various sensors attached to the aircraft. Further, the sensor system 1 includes an information signal 101 obtained by various sensors attached to the aircraft.
Of these, the takeoff stoppage determination information signal 103 is output to the takeoff stoppage determination system 4. Takeoff cancellation determination information signal 103
Includes: ground speed A1, wind direction A2, wind speed A3, residual thrust A4 after engine cutoff, effective remaining runway length A5, runway surface condition A6, own weight A7, tire pressure A8, reverse injection thrust A9
It is.

The anomaly detection system 2 compares a threshold value possessed therein with information 102 on aircraft anomalies, and outputs an anomaly determination information signal 104 to the flight control computer 3.
Output to The flight control computer 3 sends an abnormal display command signal 105 to the display system 6. The display system 6 displays an abnormality of the aircraft. After this display, the flight control computer 3 outputs the takeoff suspension determination system operation signal 106,
The program is sent to the takeoff stoppage determination system 4 to operate the takeoff stoppage determination system 4.

The pilot 5 judges whether or not to cancel takeoff by seeing the abnormality display on the display system 6, and sends a takeoff cancellation judgment system forced operation signal 107 to the takeoff cancellation judgment system 4.
Send to The database system 8 includes a data signal 110
Is sent to the takeoff suspension determination system 4. The data signal 110 includes a runway database (incline B1, altitude B2, presence / absence of emergency landing B3, obstacle B4 on extension), takeoff stop determination threshold δ
It is included.

The takeoff suspension determination system 4 performs the following calculation based on the signals 103 and 110 to determine whether takeoff suspension is correct or not. A5-C1> δ: Positive formula (1) A5-C1 ≦ δ: No formula (2) C1 = f (A1, A2, A3, A4, A5, A6, A7, A8, A9, B1, B2, B3, B4) Equation (3) where: A5: Effective remaining runway length (included in signal 103) C1: Braking distance (distance required to completely stop after stop command) f: Calculate braking distance This is the function for

The takeoff stop / fail signal 108 thus obtained is sent to the flight control computer 3. The flight control computer 3 sends to the display system 6 a command signal 109 for displaying whether or not takeoff is stopped. The display system 6 displays whether takeoff has been canceled or not. The pilot 5 sends a takeoff stop operation start signal 111 to the takeoff stop operation system 7. The takeoff stop operation system 7 outputs a takeoff stop command signal 112 to the engine control system 11 and the hydraulic control system 12. Takeoff stop command signal 112 includes direction control by IRS, engine power cut, full brake, reverse injection,
Includes elevator full down and speed brake set.

As described above, according to the present invention, the runway distance required for stopping the takeoff operation is obtained from the information obtained from each sensor, and it is instantaneously automatically determined whether or not the takeoff operation can be stopped. Therefore, the pilot can perform a quick and safe takeoff stop operation or a continuation of the takeoff operation.

FIG. 3 shows a detailed configuration of the takeoff stoppage judging system 4. In the figure, a take-off suspension determination system forced operation signal 107 or a take-off suspension determination system operation signal 10
6 is input to the operation command section 51, the operation command section 5
1 outputs an operation instruction signal 151 to the input unit 52, the calculation processing unit 53, and the determination unit 54. This operation instruction signal 15
1, the input unit 52, the calculation processing unit 53, and the determination unit 5
4 starts the operation.

The input section 52 is provided with an information signal 1 for takeoff suspension determination.
The information obtained by extracting the runway database from the data signal 03 and the data signal 110 is integrated, and a calculation parameter signal 152 required for the calculation of the expression (3) is sent to the calculation processing unit 53.

The calculation processing unit 53 performs a calculation based on the above equation (3), and sends a braking distance C1 signal 153 to the determination unit 54. The determination unit 54 extracts δ from the data signal 110, uses the extracted δ to make a determination based on the equations (1) and (2), and outputs whether takeoff is correct or not as the takeoff stop / fail signal 108.

In the above embodiment, the takeoff stop operation system 7, the engine control system 11, and the hydraulic control system 12 may be replaced with the pilot 5. Further, the abnormality detection system 2 can be configured as a judgment by the pilot 5. Furthermore, by pilot 5,
Takeoff stop operation start signal 11 to takeoff stop operation system 7
1 may be configured as a supply by the flight control computer 3.

Next, the operation of this embodiment will be described with reference to FIG. In the figure, a sensor information signal 1 obtained from various sensors attached to an aircraft is provided to a sensor system 1.
When 01 is supplied, the sensor system 1 supplies takeoff-related information 114 to the takeoff operation monitoring system 9. Further, it extracts information relating to the aircraft abnormality and supplies an aircraft abnormality related information signal 102 to the abnormality detection system 2. Further, the information signal 103 for takeoff stoppage determination is supplied to the takeoff stoppage determination system 4.

The aircraft arrives at the takeoff start position on the runway,
After the preparation for takeoff is completed, the pilot 5 supplies a takeoff start and course instruction signal 113 to the flight control computer 3. The signal 113 includes a takeoff start command and a takeoff course instruction. The flight control computer 3 supplies a course instruction signal 115 to the take-off operation monitoring system 9 and, at the same time, supplies a take-off operation start signal 116 to the take-off operation control system 10.

When the take-off operation start signal 116 is given, the take-off operation control system 10 calculates an engine control amount and a steering amount necessary for start of take-off, and the engine control system 11
And a take-off operation control signal 119 to the hydraulic control system 12. When the takeoff operation control signal 119 is given, the engine control system 11 supplies an engine control signal 120 to the engine system. When the take-off operation control signal 119 is given, the hydraulic control system 12
1 is output to the steering system. As a result, the aircraft starts takeoff.

Immediately after the start of takeoff, when takeoff-related information 114 is provided from the sensor system 1, the takeoff operation monitoring system 9 calculates a difference from the course instruction signal 115, and uses the amount of difference as a course difference signal 117 as a flight control computer. Output to 3. The flight control computer 3 supplies a correction amount of the engine and the steering system according to the course difference signal 117 to the takeoff operation control system 10 as a takeoff operation correction signal 118. When the take-off operation control system 10 is given the take-off operation correction signal 118, the take-off operation correction signal 118 is calculated, the engine control amount and the steering amount necessary for the correction are calculated, and the take-off operation correction signal 119 is supplied to the engine control system 11 and the hydraulic control system 12.

When the takeoff operation control signal 119 is given, the engine control system 11
To the engine system. When the take-off operation control signal 119 is given, the hydraulic control system 12
21 is output to the steering system. As a result, the aircraft accurately advances on the takeoff course set on the runway.

During the takeoff run, the abnormality detection system 2 compares the aircraft abnormality related information signal 102 with an internal threshold value. If it is determined to be abnormal, it is positive; if it is determined to be normal, it is negative. And outputs an abnormality determination information signal 104 to the flight control computer 3.

When the abnormality determination signal 104 is positive, the flight control computer 3 sends an abnormality display command signal 105 to the display system 6. The display system 6 outputs the abnormality display command signal 1
05 is displayed based on the abnormality of the aircraft. When a positive value is given by the abnormality determination signal 104, the flight control computer 3 sends an operation instruction signal 106 to the takeoff suspension determination system 4 in parallel with the above operation. Usually, in this process, the takeoff suspension determination system starts operation.

However, even when the abnormality cannot be detected by the sensor of the aircraft and the abnormality is not displayed on the display system 6,
If the pilot 5 determines that the aircraft is abnormal, it can send a take-off suspension determination system forced operation signal 107 to the take-off suspension determination system 4 to operate it.

The takeoff suspension determination system 4 determines whether takeoff suspension is correct based on the signal 103 and the signal 110, determines that the takeoff suspension is possible if possible, and sends a takeoff suspension success / failure signal 108 to the flight control computer 3. Given signal 108,
The flight control computer 3 sends a takeoff suspension right / wrong information display command signal 109 to the display system 6. Display system 6
When the signal 109 is given, indicates whether the takeoff has been canceled or not.

When the display system 6 determines that the takeoff suspension is correct, the pilot 5 determines that the takeoff is suspended, and sends a takeoff suspension operation start signal 111 to the takeoff suspension operation system 7. Further, the pilot 5 can determine that the take-off is to be stopped and send the take-off stop operation start signal 111 to the take-off stop operation system 7 depending on the abnormal situation, even if the display system 6 indicates that the take-off stop is correct or not. . This is when the pilot determines that stopping off the runway can minimize aircraft damage rather than taking off.

When the take-off stop operation system 7 receives the take-off stop operation start signal 111, the take-off stop command signal 11
2 for the engine control system 11 and the hydraulic control system 1
Feed to 2. When the takeoff stop instruction signal 112 is given, the engine control system 11
0 is supplied to the engine system. This engine control signal 12
0 includes an engine power cut instruction signal and a reverse injection instruction signal.

When the takeoff stop instruction signal 112 is given, the hydraulic control system 12 supplies a steering control signal 121 to the steering system. The steering control signal 121 includes a direction control instruction by the IRS, a full brake instruction, an elevator full down instruction, and a speed brake set instruction. With these operations, the aircraft stops on the runway.

[0036]

According to the present invention, from the information obtained from each sensor, the impact that occurs when the takeoff operation is currently stopped urgently, and the runway distance required for a safe stop are calculated. The pilot automatically determines whether takeoff can be stopped instantaneously, so that the pilot can perform a quick and safe takeoff stop operation or continue takeoff operation.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is a detailed configuration diagram of an embodiment of the present invention.

FIG. 3 is a detailed configuration diagram of a takeoff suspension determination system 4.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sensor system 2 Abnormality detection system 3 Flight control computer 4 Takeoff suspension judgment system 5 Pilot 6 Display system 7 Takeoff stop operation system 8 Database system 9 Takeoff operation monitoring system 10 Takeoff operation control system 11 Engine control system 12 Hydraulic control system 51 Operation command Unit 52 input unit 53 calculation processing unit 54 determination unit 101 sensor information signal 102 aircraft abnormality related information signal 103 takeoff suspension determination information signal 104 abnormality determination information signal 105 abnormality display command signal 106 takeoff suspension determination system operation signal 107 takeoff suspension determination system Forced operation signal 108
Takeoff suspension right / wrong signal 109 Takeoff suspension right / wrong information display command signal 110
Data signal 111 Takeoff stop operation start signal 112
Takeoff stop command signal 113 Takeoff start and course command signal 114
Takeoff-related information 115 Course instruction signal 116 Takeoff operation start signal 117 Course difference signal 118 Takeoff operation correction signal 119 Takeoff operation control signal 120 Engine control signal 121 Steering control signal 151 Operation instruction signal 152 Calculation parameter signal 153 Braking distance C
One signal

Claims (5)

[Claims] 1. A database system in which various airport information is stored; a sensor system for acquiring various information from various sensors attached to an aircraft; and an airport information and sensor system stored in the database system Automatic take-off cancellation determination system, comprising: a take-off cancellation determination system that determines whether the take-off cancellation is correct based on various types of information acquired by the system; and a display system that displays a determination result by the take-off cancellation determination system. . 2. Various types of information obtained by the sensor system include ground speed, wind direction, wind speed, residual thrust after engine cutoff, effective remaining runway length, runway surface condition, own weight, tire pressure, and reverse injection thrust. 2. The method according to claim 1, wherein
Automatic take-off cancellation determination system described in 1. 3. The automatic takeoff suspension according to claim 1, wherein the airport information stored in the database system includes an inclination, an altitude, presence / absence of emergency landing, and an obstacle on extension. Judgment system. 4. The take-off suspension determination threshold value is further stored in the database system, and the take-off suspension determination system compares the information on the airport with the take-off suspension determination threshold value, 4. The automatic take-off cancellation determination system according to claim 3, wherein whether the take-off cancellation is correct or not is determined based on the comparison result. 5. The takeoff suspension determination system calculates a braking distance based on various types of information acquired by the sensor system and various airport information stored in the database system, and the sensor system acquires the braking distance. The automatic take-off stop determination system according to claim 4, wherein a difference between an effective remaining runway length and the braking distance is compared with the take-off stop determination threshold value.