KR200408089Y1 - Aircraft safety pin / probe cover not stored warning device - Google Patents

Abstract

The aircraft has a landing gear to support the aircraft on the ground, which temporarily inserts safety pins in the landing gear to prevent them from being folded into the aircraft due to human error or system malfunction on the ground. Storing in a locker is the normal procedure. In addition, there are various probe devices on the outside of the aircraft to detect the conditions around the aircraft such as pressure and temperature.If the aircraft is moored for a long time, the probe is covered to prevent foreign substances from penetrating. It is a normal procedure to store them in a storage box. However, if you forget to remove the safety pin / probe cover and store it in the locker and take off the aircraft, i.e. if the safety gear is stuck in the landing gear or the cover is covered, the landing gear cannot enter the aircraft or the external conditions of the aircraft. Could not be detected, causing the aircraft to return to its starting point.

To improve this, the existing safety pin / probe cover to identify the library, safety pins / door Storage presence in radio frequency identification ① on the safety pin / probe cover, lanyard tag (RFID TAG ) and ② RFID reader in safety pin / probe cover storage box READER ) , ③ Install the safety pin / probe cover non-storage identification circuit device .

The warning circuit occurs only when the safety pin / probe cover is not stored in the aircraft take-off condition, providing the pilot with a warning message, warning voice, and warning light, and correcting the warning before taking off (keeping the safety pin / probe cover in the storage box). Problems and economic losses can be prevented.

Safety pin / probe cover not stored warning device, safety pin / probe cover storage box, RFID TAG, RFID READER, safety pin (DOWNLOCK or GROUND PIN), probe cover (PROBE COVER), safety pin / probe CARD Or unit, warning unit, warning message, warning voice and warning light

Description

Aircraft Safety Pin / Probe Cover Unstored Warning Device {DOWNLOCK PIN AND PROBE COVER WARNING SYSTEM}

   Composition of the device Refer to Section 3 Circuit Description.

1.The landing gear of the aircraft is on the ground to support the aircraft and after takeoff

   Is fitted to enter the aircraft to reduce resistance. But

   A pilot or mechanic is absent from the aircraft for a long time

   In case of maintenance, the aircraft may be damaged due to human error or malfunction of the aircraft system.

   The safety pin is inserted into the folding part to prevent the landing gear from being folded in.

   There is. This was not intended to prevent accidental folding of the landing gear.

   is.

2. Probe devices such as dynamic pressure, static pressure, temperature, angle of attack, etc.

   During your stay, cover it to prevent foreign objects from entering the probe.

   Release.

    Note: There are other types of cover, but are omitted for importance.

3. The safety pin and probe cover must be removed except before the flight, ie before flight.

   In the aircraft cabin (typically, cockpit, electrical / electronic equipment compartment or

   It is normal to store it in a cargo compartment). So before the departure of the aircraft

   The pilot is required to check and double-check the safety pin and probe cover.

   There is. Since then, cases that can't be stolen have often occurred.

   Attach a red string to the probe cover to make it easy to check

   There is. However, the safety pin and probe cover are separated and stored twice.

   Even if the identification strap is attached and operated, the aircraft can be operated with the safety pin and probe cover inserted.

   It is unavoidable that person's mistake is inevitable that case to start starts

   Is the same.

4. If you take off with the safety pin inserted,

  end. The landing gear will not be able to enter the aircraft,

  I. The pilot is confused that something else is causing the landing gear problem.

      The system that tells the pilot that the safety pin

      No)

  All. With the landing gear down, you can continue flying due to drag and flight constraints.

      I can't,

  la. The important thing is to reduce your landing weight in order to land again

      You have to throw away that much fuel you put on the sea.

5. Take off with the cover of the probe such as dynamic pressure, static pressure, temperature, angle of attack, etc.

  end. I don't know the aircraft speed

  I. You don't know the aircraft's altitude,

  All. You can't adjust the aircraft power,

  la. It is not possible to adjust the attitude of the aircraft.

      As a situation, you have to return to the airport you took off.

6. Aircraft caused by accidentally failing to stow safety pins or probe covers

   Economic loss of return

  end. Causing huge fuel loss and environmental pollution,

  I. Delays due to return and refueling cause continuous delays on the next connection,

  All. Shortening of aircraft parts life, which is a function of increase in aircraft uptime, employees

      Higher labor costs, higher ground support costs,

  la. Indirect losses due to passenger service complaints,

  hemp. Other direct or indirect costs,

  bar. In addition, retaliation caused by not removing the safety pin or probe cover shall be

      This creates a significant mental burden on mechanics and pilots.

7. The mechanic and the pilot should remove the safety pin or probe cover before flight.

   Even if we check in double, human error is inevitable and cannot guarantee, and this design

   Before the flight, the mechanic and the pilot will blink, and the safety pin or probe

   Even if you start the aircraft without removing the cover, the following system

   Warning the pilot before takeoff

   The purpose is to correct it.

8. Conventional technology

  end. Conventional safety pin / probe cover holder

      Safety pin / probe cover is available in the cockpit, electric / electronic maintenance compartment and cargo compartment at your convenience.

      Provide a box-type safety pin / probe cover storage box in a suitable space

      I'm doing it. (See Figure 1.)

1. Landing gear normal operating procedures

    After the aircraft has taken off the runway, the landing gear enters the aircraft.

    Before explaining and explaining the illustrations, explain the role of names.

    Landing Gear: Aircraft Landing Gear

    Landing Gear Actuator: An operator who pulls a landing gear into the aircraft.

    Drug Strut: Lifts the transverse axis of the aircraft and landing gear and the landing gear.

                Role to go.

    Down Lock Upper Linkage

    And Lower Linkage: Move Pivot Points A, B, and D to the centripetal point.

                      It acts as an overcenter.

    Downlock Actuator: When the actuator pushes the linkage, it is overcentered and pulled

                       It plays a role in releasing Overcenter.

    Downlock (Ground) Pin: Pilot or mechanic on an aircraft staying on the ground

                          If you have been away for a long time or

                          Downlock due to mistake or malfunction of aircraft system

                          Prevent Actuator from Solving Overcenter Linkage

                          It plays a role. Ie Downlock to Pivot Point C

                          When the pin is inserted, the points B and C are fixed so that the linkage

                          In some cases, because there is no center of gravity

                          Rado landing gear cannot enter the aircraft.

   Figure 2 shows that the aircraft lowers the landing gear to the ground and supports the aircraft.

   Status. Also, the downlock linkage is overcentered and downlocked

   Since the pin is inserted in the pin hole, the overcenter cannot be released in any case.

   Situation. If the aircraft takes off in this state, the landing gear will never

   You cannot enter. Therefore, the downlock pin must be stolen before takeoff.

   Will.

   Figure 3 shows the downlock pin is normally removed after take-off, downlock actuator

   The linkage that was overcentered by pulling the linkage starts from Pivot Point B.

   Unlocked, there is no disturbance in the operation of the Landing Gear Actuator pulling, Landing Gear

   Actuator is pulling the landing gear into the aircraft, and Drug Strut

   It bends to guide the landing gear smoothly. This is the top of the landing gear

   This is a working drawing.

   But forget about the safety pin inserted in Pivot Point C on the landing gear

   If not, point B and C of Upper Linkage and Lower Linkage

   Since it is fixed, there is no central point.

   Can't be released, as shown in Figure 3.

   And the landing gear will continue to be supported as shown in Figure 2.

   There is a problem that has not been entered.

2. probe device cover

  end. The main probes outside the aircraft are: (Figure 4.)

    1) PITOT PRESSURE PROBE

    2) STATIC PRESSURE PORT

    3) TOTAL AIR TEMPERATURE PROBE

    4) ANGLE-OF-ATTACK PROBE

      Note: There are other types of cover, but are omitted for importance.

  I. If the cover is covered during the flight, it detects pressure, temperature, angle of attack, etc.

      You must do it because you cannot.

1.Enhanced safety pin / probe cover storage (see Figure 5.)

  end. Improved safety pin / probe cover holder means safety pin / probe cover

      Is to install a device that can identify whether or not.

  I. As mentioned earlier, a red string is attached to identify the safety pin / probe cover.

     There is. Attach the RFID TAG to this red string and attach the safety pin / probe

     Install the RFID READER in the cover storage box to install safety pins and various

     The pilot connects the signal to the warning system to keep the probe cover in place.

     To give information.

     Note: 1.RADIO FREQUENCY IDENTIFICATION

         2. Covers of other systems are added to the READER identification item as needed.

            Sikkim.

2. Circuit conditions (see Figure 6.)

  end. Safety pin / probe cover tag (RFID TAG): RFID for identification on safety pin / probe cover strap

      With TAG (1).

  I. Safety pin / probe cover storage RFID READER: Safety pin /

      Detects the storage of various probe covers. (2)

     Note: 1. The safety pin / probe cover must be fitted to the cockpit, electrical / electronic maintenance compartment,

            Provide a safety pin / probe cover storage box in a suitable space such as a cargo compartment.

            I'm doing it.

         2. When all safety pins and probe covers are stored, the power supply of the reader will be transmitted during flight.

            Blocked by supplying for 2 seconds for fear of interference. (18)

         3. If either safety pin / probe cover is not stored, the safety pin / probe cover

            The power supply will continue to help identify the READER until all have been stored.

            If all are stored, the power is cut off. (19)

  All. DOOR ALL CLOSE: When all aircraft doors are closed

                                       Sent input signal. (3)

  la. PARKING BRAKE: The periodic device may have been released to

      When input signal (4).

  hemp. ENGINE RUN: A pilot or mechanic runs an aircraft engine

                                    Input signal created when (5)

  bar. TAXI OR IRS SPEED: Aircraft wheels when the aircraft starts to move

                                      Or by detecting the movement from the gyro

                                      Input signal (2 <GROUND SPEED <40 KTS). (6)

     Note: IRS (INERTIAL REFERENCE SYSTEM)

  four. Safety pin / probe cover not stored (DATA CONTROL SYSTEM): Safety pin / probe

      If everything is stored in the lid compartment, no signal is generated.

      Signal to “AND GATE” (9), the power supply to help the reader

      Signal output to "AND GATE" (19), which magnetizes the RELAY to continue supplying. (7)

  Ah. Takeoff Identification (TAKEOFF): Signal output "AND GATE" when aircraft takeoff conditions are met

                                 Circuit. (8)

  character. Safety pin / probe cover not identified Identification: Aircraft is in takeoff condition and safety pin / probe cover

      Signal output "AND GATE" circuit for unstored identification. (9)

  car. Safety pin / probe cover not stored identification device (safety pin / probe cover CARD OR UNIT):

      CARD or UNIT to identify the safety pin / probe cover unopened. 10

  Ka. Warning unit (WARNING UNIT): In the safety pin / probe cover non-holding identification circuit

                               Which generates a warning when a signal is input

                               UNIT. (14)

  Get. Warning message screen, warning voice, warning light (DISPLAY UNIT, VOICE WARN SPEAKER,

      MASTER WARNING & CAUTION LIGHT): Pilot alerts generated by the warning unit.

      Device to inform. (15) (16) (17)

      Notes: 1.Alarms or warning lights may be installed outside the aircraft, but additional installation

             And cost increases.

          2. Warning message-"NO TAKEOFF", Warning voice-"DOWNLOCK PIN / PROVE COVER",

             Warning light-"orange".

   The signals for the above ports and ports are already input signals for all aircraft systems.

   Is being used as a system. Protest Warning Units and other devices have already been

   Installed device. Go here. Attach RFID TAG to the strap of the protest pin / probe cover

   And the RFID READER device (2) in the storage box, the safety pin / probe cover

   The non-storage identification system (7) and the safety pin / probe cover non-storage identification circuit (9)

   In addition, there is no safety pin / probe cover attached to any RFID tag.

   If not, inform the pilot that the safety pin / probe cover is not stored.

   I want to warn you.

3. Circuit Description

  Then, the circuit of the following safety pin / probe cover non-holding warning device will be described.

  (Figure 6.)

  end. All doors are closed to start the aircraft (3), and aircraft takeoff identification "AND

      GATE "(8) signal input status.

  I. The pilot was released to pilot the aircraft (4), and the aircraft took off.

      Identify the status of signal input to "AND GATE" (8)

  All. Engine is started to start the aircraft (5) and aircraft takeoff identification

      Signal input status to "AND GATE" (8).

  la. When the aircraft moves, movement is detected on the wheel axle or gyro (6),

      Takeoff identification Signal input status to "AND GATE" (8).

  hemp. "AND GATE" (8) identifies takeoff condition signal without safety pin / probe cover "AND

      GATE "(9) and power on READER for 2 seconds to identify safety pin / cover storage

      Blocked after supply identification.

  bar. All safety pins and probe covers are stored in the box (7),

      Unarchived identification "AND GATE" (9) without signal

  Above a. Protest status is all the conditions for the aircraft to take off,

  All safety pins / probe covers are also stored in the storage box, so the safety pins / probe covers

  Unstored warning devices are normal situations that have not caused any warning.

  If any safety pin / probe cover cannot be stored in the box at the bar or port,

  Signal from the safety pin / probe cover data control system (7)

  Is entered as "AND GATE" (9), and until the safety pin / probe cover is

  The READER will continue to power up to aid identification. Already in "AND GATE" (9)

  Above a. The signal for the departure of the protest aircraft is on standby,

  "AND GATE" (9) is met when a signal is entered that even a safety pin / probe cover is not stored

  Signal is sent to the warning unit 14 and a warning from the unit is sent to the pilot.

  It will be sent to the warning message screen (15), warning voice speaker (16) and warning light (17).

  therefore,

  Locker safety pin / probe cover storage (O) / takeoff condition (X) / warning (X)

  Locker safety pin / Probe cover storage (X) / Takeoff condition (X) / Warning (X)

  Locker safety pin / probe cover storage (O) / takeoff condition (O) / warning (X)

Locker safety pin / Probe cover storage (X) / Takeoff condition (O) / Warning (O)

  It becomes the circuit configuration to become.

As a result, if the mechanic or pilot forgets to put the safety pin or cover in the safety pin / probe cover locker on the landing gear and probe, and the pilot attempts to start the aircraft, a warning message, audible voice and warning light will be generated at the same time as the aircraft departs. Therefore, correcting this warning before takeoff (keeping the safety pin / probe cover in the storage box) will prevent problems and economic losses from returning.

Claims (1)

Safety pin / probe cover storage box (2) including an RFID TAG (1) attached to the safety pin / probe cover identification strap and an RFID READER that reads the RFID TAG attached to the safety pin / probe cover strap in the safety pin / probe cover-free warning device (2) A door closing signal (3) input when all doors of the aircraft are closed, a cycle unlocking signal (4) input when the aircraft main apparatus is released, an engine starting signal (5) input during engine startup, and an aircraft Is input when the aircraft moves signal (6), safety pin / probe cover not stored identification system (7) that outputs a signal if any one is not stored in the safety pin / probe cover storage box, and signals (3) to (6) input. "AND GATE" circuits (8) to identify pre-flight takeoff conditions, RELAY (18) to supply identification power to the reader for two seconds under takeoff conditions, and to both takeoff and safety pin / probe cover Supply power to READER until stored Is a relay (19), a "AND GATE" circuit (9) that outputs the safety pin / probe cover unstored and is in the pre-flight take-off stage when the signals (7) and (8) are input, and the safety pin / probe cover is not stored. Safety pin / probe cover CARD or UNIT (10) constituting the identification circuit, warning message circuit (11), warning voice circuit (12) and warning light ground switch (13) which provide a warning when the safety pin / probe cover is not stored. ), A warning UNIT 14 constituting a warning circuit, a warning message screen 15 showing a "NO TAKEOFF" warning message to the pilot, and a warning sound informing the pilot of the "DOWNLOCK PIN / PROBE COVER" warning voice. And a speaker 16 and a warning light 17 for visually providing the pilot with an "AMBER" warning light.

Images