A center of gravity management system for an aircraft in a jacked-up state

Abstract

The utility model discloses a kind of gravity management systems of aircraft under jacking state, including the weighing sensor for collecting aircraft vertex position weight, digital display for showing weight data, wireless transmission module, respectively with the power supply of digital display and wireless transmission module connection, for calculating the control center of gravity of aircraft under jacking state according to weight data, weighing sensor, digital display and wireless transmission module are sequentially connected and as a data acquisition unit are connected with control center communication by wireless transmission module.The utility model can realize the real-time monitoring and safety early warning of aircraft jacking load data.Control center processes acquisition data, including real-time gravity calculation, theoretical gravity calculation and subsequent big data analysis.The utility model reduces the dependence on manpower, reduces the labor intensity of manual operation, greatly improves work efficiency, also significantly enhances the safety of aircraft in jacking operation, optimizes the overall process of maintenance work.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft maintenance technology, and in particular relates to a center of gravity management system for an aircraft in a lifting state. Background Technology

[0002] During routine aircraft lifting operations, major structural repairs, or modifications, strict adherence to the requirements of manufacturers (such as Boeing, Airbus, and others) necessitates precise jacking of the aircraft's apex or critical load-bearing structural components to ensure the aircraft maintains the correct attitude or reaches a state of complete zero stress. In this process, the load at each load-bearing point must be strictly controlled within a certain safety threshold, highlighting the necessity of real-time monitoring.

[0003] Currently, the load monitoring tools used in the industry mainly include pointer-type and digital display load meters. These devices require on-site mechanics to periodically check the readings manually to confirm whether they are within safe limits. However, this method is not only time-consuming and labor-intensive, but also cannot achieve true real-time monitoring and safety early warning functions. More importantly, it cannot transform load data into information resources for in-depth analysis, including real-time center of gravity calculation, as well as subsequent big data mining and analysis. Utility Model Content

[0004] The purpose of this invention is to provide a center of gravity management system for aircraft in the lifting state that can significantly reduce labor costs, greatly improve work efficiency, and enhance the safety of aircraft during lifting operations.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution: a center of gravity management system for an aircraft in a lifting state, characterized in that it includes a weighing sensor for collecting the weight at the top position of the aircraft, a digital display for displaying the weight data, a wireless transmission module, a power supply connected to the digital display and the wireless transmission module respectively, and a control center for calculating the center of gravity of the aircraft in the lifting state based on the weight data. The weighing sensor, the digital display and the wireless transmission module are connected in sequence and form a data acquisition unit, which is connected to the control center through the wireless transmission module.

[0006] This invention enables real-time monitoring and safety warning of aircraft lifting load data. The control center processes the collected data, including real-time center of gravity calculation, theoretical center of gravity estimation, and subsequent big data analysis. This invention significantly reduces reliance on manpower, alleviates the labor intensity of manual operations, greatly improves work efficiency, and also significantly enhances the safety of aircraft during lifting operations, optimizing the overall maintenance process.

[0007] The present invention comprises two or more data acquisition units, each of which is wirelessly connected to the control center, and each data acquisition unit is powered by a DC battery unit, the power of which is supplied by the mains power.

[0008] The wireless transmission module described in this utility model adopts a 5G data acquisition gateway.

[0009] The wireless transmission module described in this utility model operates at a voltage of 24V, has a maximum current of 120mA, and a standby current of 80mA.

[0010] The battery unit described in this utility model uses a lithium battery, and the lithium battery has a built-in protection board.

[0011] The accuracy of the weighing sensor and digital display described in this invention is equal to or less than 0.5%.

[0012] The control center of this invention triggers an alarm by flashing a webpage when the real-time weight value exceeds the alarm upper and lower limits. The wireless transmission module of this invention has a built-in temperature and humidity measurement function and transmits temperature and humidity data to the control center, or a temperature and humidity detector with data transmission function can monitor temperature and humidity in real time and transmit the data to the control center.

[0013] Compared with the prior art, the present invention has the following significant advantages:

[0014] This invention enables real-time monitoring and safety warning of aircraft lifting load data. The control center processes the collected data, including real-time center of gravity calculation, theoretical center of gravity estimation, and subsequent big data analysis. This invention significantly reduces reliance on manpower, alleviates the labor intensity of manual operations, greatly improves work efficiency, and also significantly enhances the safety of aircraft during lifting operations, optimizing the overall maintenance process. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the composition structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the automatic display of the vertex position of the aircraft model on the control center webpage of this utility model;

[0018] Figure 3 This is a chart displayed on the webpage of the control center of this utility model;

[0019] Figure 4 This is a diagram of the aircraft's center of gravity position displayed on the control center webpage of this utility model. Detailed Implementation

[0020] like Figure 1 As shown, this utility model discloses a center of gravity management system for an aircraft in a lifting state. It includes a high-precision load sensor (load sensor) for collecting weight data at each apex of the aircraft, a digital display (load display) for displaying weight data, a wireless transmission module (wireless transmitter module), a power supply connected to the digital display and the wireless transmission module respectively, and a control center for calculating the aircraft's center of gravity in the lifting state based on the weight data. The load sensor, digital display, and wireless transmitter module are sequentially connected and form a data acquisition unit. The wireless transmission module communicates with the control center via a wireless transmission protocol.

[0021] There are two or more data acquisition units, specifically four data acquisition units, numbered 1 to 4. Each data acquisition unit is wirelessly connected to the control center, and each data acquisition unit is powered by a DC battery unit, which is powered by AC 220 / 50HZ mains power.

[0022] The components of this utility model are as follows:

[0023] The load cell and load indicator are used together for metering; therefore, the load cell's range, dimensions, and accuracy must be matched to the jack being used. The selected load indicator and load cell should have an overall accuracy equal to or better than 0.5%.

[0024] The battery unit uses a DC24V / 10AH lithium iron phosphate battery. The lithium battery dimensions are 120mm (length) × 100mm (mm) × 70mm (height), and it comes with a protection board (protection against overcharge, over-discharge, overheating, short circuit, and overcurrent). Considering practical needs, such as when the battery capacity greatly exceeds actual requirements, the battery size can be reduced accordingly.

[0025] The wireless transmission module employs a 5G data acquisition gateway. This gateway can directly acquire the signal (4-20mA) output from each digital display or communicate with each digital display via RS485 to transmit data through the 5G network. 5G upload methods include HTTP communication and MQTT communication. The wireless transmission module operates at 24V, with a maximum current of 120mA and a standby current of 80mA. Using a 5G data SIM card, data transmission requires no receiver. Under mains power, it can continuously transmit data at the maximum frequency; under battery power, it can transmit data once per second, with a minimum standby time of 16 hours. Reducing the transmission frequency under battery power extends its operating time. The wireless transmission module can have built-in temperature and humidity measurement capabilities and transmit this data to the control center, or a temperature and humidity sensor with data transmission capabilities can monitor temperature and humidity in real time and transmit the data to the control center.

[0026] The control center triggers an alarm by flashing a webpage when the real-time weight value exceeds the alarm upper or lower limit.

[0027] The control center is equipped with relevant software, including a web front-end and a web back-end, which can calculate the aircraft's weight and center of gravity based on the collected weight data. The calculation formula used is the same as the calculation formula in the relevant industry standards, which is existing technology.

[0028] The content of the control center webpage is as follows:

[0029] Real-time monitoring of aircraft weight and center of gravity via web front-end:

[0030] (1) On a dedicated webpage, after entering the aircraft number, the currently open sales instruction numbers are displayed. Clicking "OK" or entering the sales instruction number and clicking "OK" displays the current aircraft information: aircraft number, sales instruction number, customer, work card model, scheduled maintenance level, and scheduled maintenance time. The operation logic is similar to that of writing non-card steps on the current TRACE system page.

[0031] (2) Choose one of the two options on the tab: Real-time monitoring of aircraft weight and center of gravity or theoretical calculation of aircraft weight and center of gravity. Select the Real-time Monitoring of Aircraft Weight and Center of Gravity tab.

[0032] (3) Continue to the TAB page and choose one of the two options: a schematic diagram of conventional aircraft jacking or a schematic diagram of aircraft jacking / support for structural repair.

[0033] (4) If you select the standard aircraft jacking diagram tab, the apex position diagram will be automatically displayed according to the aircraft model. See [link / reference]. Figure 2 The vertex positions are: front vertex A, left wing vertex B, right wing vertex C, and tail safety vertex D.

[0034] (5) If you select the aircraft jacking / support diagram TAB page for structural repair, in addition to automatically displaying the standard aircraft jacking diagram above, you can also upload multiple aircraft support location diagrams.

[0035] (6) Data display in the table section. First, select the unit of measurement, then only... Figure 3 The aircraft's real-time center of gravity data will only be displayed after all lever arms are filled in. Lever arms are not the same as positions; the STA and BS for Boeing aircraft are different. The upper and lower limits of the center of gravity range must be manually entered; specific figures should be consulted in AMM 05 (Airbus aircraft) or AMM 07 (Boeing aircraft).

[0036] For standard vertex positions, the system automatically generates pre-calculated lever arms. For custom positions, manually calculating the input lever arm can generate weight (temperature / humidity optional) / time graphs for individual positions, as well as time graphs of total aircraft weight and center of gravity. Table time intervals can be selected in different units: seconds / minutes / hours / days.

[0037] (7) Use a simple two-dimensional planar graph with the vertical axis representing aircraft weight and the horizontal axis representing the aircraft's center of gravity to show the relative position. The two-dimensional graph is shown in Figure 4, with the current aircraft weight and center of gravity displayed in a table. The aircraft's real-time weight is 120,000 LBS, and its center of gravity MAC is 20%.

[0038] Webpage backend:

[0039] (1) Data backend storage (only applicable to the aircraft weight and center of gravity real-time monitoring module); Data packet format: aircraft number, sales order number, location name, transmission module number, real-time weight, time.

[0040] (2) Weight data is transmitted to the intranet via the data SIM card.

[0041] (3) The project team engineers and process engineers consulted the AMM and WBM manuals for each aircraft model to obtain relevant aircraft information, various parameters, and calculation formulas, which were then provided to IMS. The provided information included, but was not limited to: the aircraft standard pylon diagram, the name and lever arm of the aircraft standard pylon, the calculation formula for the aircraft's real-time center of gravity, the aircraft weight and center of gravity position diagram, and the aircraft chord length and chord length starting point.

[0042] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, this utility model can also be modified, replaced or changed in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. A center of gravity management system for an aircraft in a lifted state, characterized in that: It includes a load cell for collecting the weight of the aircraft at its apex position, a digital display for displaying the weight data, a wireless transmission module, a power supply connected to the digital display and the wireless transmission module respectively, and a control center for calculating the center of gravity of the aircraft in the apex position based on the weight data. The load cell, digital display and wireless transmission module are connected in sequence and form a data acquisition unit, which communicates with the control center through the wireless transmission module.

2. The center of gravity management system for an aircraft in a lifted state according to claim 1, characterized in that: There are two or more data acquisition units. Each data acquisition unit is wirelessly connected to the control center, and each data acquisition unit is powered by a DC battery unit, which is powered by the mains power.

3. The center of gravity management system for an aircraft in a top-lifted state according to claim 2, characterized in that: The wireless transmission module uses a 5G data acquisition gateway.

4. The center of gravity management system for an aircraft in a top-lift state according to claim 3, characterized in that: The wireless transmission module operates at 24V, has a maximum current of 120mA, and a standby current of 80mA.

5. The aircraft center of gravity management system in the lifting state according to claim 4, characterized in that: The battery unit uses a lithium battery, and the lithium battery has a built-in protection board.

6. The center of gravity management system for an aircraft in a lifted state according to claim 5, characterized in that: The accuracy of the weighing sensor and digital display is equal to or less than 0.5%.

7. The aircraft center of gravity management system in the lifting state according to claim 6, characterized in that: The control center triggers an alarm by flashing a webpage when the real-time weight value exceeds the alarm upper or lower limit.

8. The center of gravity management system for an aircraft in a lifted state according to claim 7, characterized in that: The wireless transmission module has a built-in temperature and humidity measurement function and transmits temperature and humidity data to the control center.

9. The center of gravity management system for an aircraft in a lifted state according to claim 7, characterized in that: The temperature and humidity are monitored in real time by a temperature and humidity sensor with data transmission function, and the temperature and humidity data are transmitted to the control center.

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