RU2778170C1 - Method for repairing aviation equipment during operation at permanent locations - Google Patents

Abstract

FIELD: aviation.

SUBSTANCE: invention relates to maintenance and repair of aviation equipment. Method for repairing aviation equipment during operation at permanent locations includes reviewing the technical documentation, conducting preliminary fault detection, and determining the practicability of conducting repairs. In the process of repairs, first the site of maintenance and repair is determined, then preliminary fault detection is conducted, the causes of failure or malfunction of the assembly and part are determined, the identified defects are listed. The optimal number of spare assemblies and parts is then formed on the basis of a computer program. Additionally, fault detection is repeated and the serviceability of assemblies and parts is tested on stands prior to the installation of assemblies and parts on board the plane. In order to monitor the process of wear of assemblies and parts, a database is created when faults are detected in the parameters and when the values thereof deviate from the nominal values for the entire period of operation and repair.

EFFECT: time of repairs is shortened, repair is optimised.

1 cl, 2 dwg

Description

The invention relates to aviation. In particular, to the method of repair (P) of aviation equipment (AT) during operation, namely, predominantly complex technical products that are part of on-board equipment, consisting of a large number of components and assemblies, and is intended for the high-quality organization of the maintenance system (TO) and R AT, improving the efficiency of repair AT, as well as improving the level of flight safety.

Known "Method of technical operation of aviation equipment" (RU 2339550 C2, 01.07.2004, IPC B64F 5/00 (2006.01), "Method of technical operation of aviation equipment" (RU 2004119971 A, 10.12.2005, IPC B64C 1/ 100 (2000.01), "Method of technical diagnostics and repair of aircraft and helicopters" (RU 2423296 C1, 01/15/2010, IPC B64F 5/00 (2006/01).

There is also a method from patents RU 2339550 C2, RU 2004119971 A, related to operation and maintenance and not reflecting the entire list of preliminary work and sequence of operations when choosing a rational method and place for repair of AT products. Maintenance covers all types of operational types of AT preparations, periodic and routine maintenance, storage work, current repairs at airfields without decommissioning equipment and without sending it to aviation enterprises for overhaul.

Closest to the claimed invention is the technical solution "Method for technical diagnostics and repair of aircraft and helicopters" (RU 2423296 C1, 01/15/2010, IPC B64F 5/00 (2006/01), refers to maintenance and diagnostics in a narrow area of specialization airframe and AT engines.

The disadvantage of this method is that it does not reflect the sequence of operations, which is a significant drawback in the organization of maintenance and repair, as well as taking into account factors that affect the rational choice of a repair site. Another significant disadvantage of this technical solution is that in cases of increasing the intensity of the use of AT, the intensity of requests for repairs received by the repair authorities increases and, as a result, due to the limited capacity of the repair departments, the repair time increases, there is a need to redistribute places repair at the manufacturer.

The technical result of the proposed method is to eliminate the above disadvantages and is aimed at developing a method for organizing maintenance and repair of AT products from the AT onboard equipment.

The specified technical result is achieved by the fact that in order to improve the quality of AT maintenance in aerodrome conditions without decommissioning the equipment and without sending it to repair enterprises for current repairs, the repair process is carried out in the following sequence, initially the place of maintenance and repair is determined, then carried out preliminary fault detection, determine the causes of failure or malfunction of the unit and part, draw up a list of defects, after which they receive the necessary spare units and parts from the warehouse, in addition, before installing the units and parts on board the aircraft, they carry out fault detection and check the serviceability of units and parts on the stand, while to control the wear of components and parts, a database is created in case of defective parameters and their deviation from the nominal values during the entire period of operation and repair.

The method is carried out as follows. The process of repairing components and parts is carried out directly at the place of deployment, while checking the technical documentation and preliminary fault detection. In addition, in the process of additional fault detection, the cause of failure or malfunction of components and parts is determined. In addition, I subject fault detection to both faulty components and parts, and serviceable ones. After fault detection, the reasons for the failure of units and parts are analyzed, a list of defects is compiled, in addition, to determine the feasibility of repairing units and parts, an application is made for obtaining spare parts of products and deliver them to the place of repair of on-board equipment, where, before installing spare parts of products, fault detection is carried out and checking the malfunction of parts of products on the stand, and to control the wear of parts of products, a database is created in case of defective parameters and their deviation from the nominal values during the entire period of operation and repair.

And for the timely and optimal formation of the number of spare parts for aircraft products in warehouses, as well as to maintain them in good condition, taking into account the specifics of storage and climatic factors of the external environment, they were carried out using a computer software product. In this program, a database of product failures is formulated, and with the help of it, the most probable failures are also predicted and calculated. Also, this program allows you to implement the optimal schedule for checking spare parts in stock, taking into account the specifics of storage systems.

As a result of the implementation of this method, a system of sequential formalized decision-making actions is formed to continue the operation of AT products, as well as prompt decision-making on the further feasibility of repair and rational choice of a repair site with minimal loss of time.

EXAMPLE

When performing scheduled flights, after completing the flight task and landing the aircraft, the crew reported on the comments identified during the flight, on the incorrect operation of radio communication and radio navigation equipment. An engineer by specialty, according to the governing documents, checks the performance of products with an integrated control system, after which the failure of the block of the radio engineering system of short-range navigation and the failure of the receiver of the short-wave radio station are confirmed. In the shortest possible time, an engineer in the specialty makes an application for the failed blocks, receives them, dismantles the failed blocks, mounts the serviceable blocks and then confirms the serviceability of the products by checking the built-in control systems. Failed units are transferred to engineers in the specialty in the repair departments, which assess the maintainability and feasibility of repair in the conditions of the operating organization.

The figure 1 shows a schedule of time costs for the repair of 2 blocks T _sums. , which consists of the waiting time for repair T expected _. , repair time Т _rem. , T _{threshold is set.} , at which a decision is made on the redistribution of the repair site. Based on this, an engineer in the specialty decides to repair the blocks at the place of permanent deployment or send them to the manufacturer's enterprises.

On the day of flights, with a large number of sorties, with the simultaneous landing of 6 aircraft, comments were received from the crews about failures and incorrect operation of products, an engineer by profession, by checking the on-board equipment with built-in control systems, revealed 5 failures, after they were eliminated, by replacing failed blocks received from the warehouse upon request, transferred the failed blocks to the repair unit. After assessing the maintainability and feasibility of repair in the operating organization, as can be seen from the graphs in figure 2, it is advisable to send failures numbered 2, 3, 5 for repair to manufacturers, since T _sums. >T _threshold .

After the repair is completed, all remanufactured blocks are checked on the stands and then installed on the aircraft, from where they were dismantled, where they are checked by built-in control systems. Blocks received from the warehouse, at the request of specialists, back replenish the number of spare parts.

Claims (1)

A method for repairing aviation equipment during operation at points of permanent deployment, including checking technical documentation, conducting preliminary fault detection, determining the feasibility of repair, characterized in that the repair process is carried out in the following sequence: initially, the place of maintenance and repair is determined, then carried out preliminary fault detection, determine the causes of failure or malfunction of the unit and part, draw up a list of defects, after which, on the basis of the computer program, the optimal number of spare units and parts is formed, in addition, before installing the units and parts on board the aircraft, they carry out repeated fault detection and check the serviceability of units and parts on the stands, and to control the process of wear of components and parts, a database is created in case of defective parameters and their deviation from the nominal values during the entire period of operation and repair.

Images