Incremental flight management software CTSO evidence obtaining method based on IMA platform

Abstract

The invention discloses an incremental flight management software CTSO evidence obtaining method based on an IMA platform. The incremental flight management software CTSO evidence obtaining method comprises the steps that (1) the IMA platform where flight management software resides obtains TSO-C153a approval; (2) establishing a communication channel with an IMA platform authorized by TSO-C153a and acquiring related data; (3) executing an increment activity on the IMA platform authorized by the TSO-C153a to form conformity data of an increment; (4) flight management software development and verification and CTSO function performance conformance verification are completed on an IMA platform authorized by TSO-C153a, and conformance data of the lowest operation performance standard are formed; and (5) the flight management software obtains the approval of the TSO-C214 and the CTSO-C115d. The method can effectively support a flight management system design and a flight management system CTSO evidence obtaining scheme formulated by a manufacturer, and is a method easy for engineering implementation.

Description

Technical Field

[0001] The present invention belongs to the technical field of flight management, and relates to an incremental flight management software CTSO forensics method based on an IMA platform. Background Art

[0002] The flight management system is a basic component of the avionics system of transport aircraft and is the core system for track management. The flight management system generates an optimized four-dimensional track based on the predetermined flight plan, air traffic control constraints, aircraft performance and weather conditions, and works with the automatic flight control system to enable the aircraft to automatically fly along the optimized track, thereby improving aircraft operating efficiency, reducing crew workload and improving airspace management efficiency.

[0003] China first released CTSO-C115d on January 16, 2019. This standard applies to manufacturers who apply for CTSO approval (CTSOA) for required navigation performance (RNP) equipment based on multi-sensor input. CTSO-C115d specifies the minimum performance standards that required navigation performance (RNP) equipment based on multi-sensor input must meet in order to obtain approval and be marked with the applicable CTSO mark. CTSO-C115d clarifies its scope of application, supporting performance-based operations from RNP0.3 to RNP4.0, and enhancing the RNP functional range. CTSO-C115d comprehensively provides the requirements that required navigation performance (RNP) equipment based on multi-sensor input must meet to obtain CTSO approval, including functions, failure state categories, functional identification, environmental identification, software identification, electronic hardware identification, etc. According to DO-283B pointed to by CTSO-C115d, RNAV systems (including RNP systems) can be used as part of the flight management system (FMS). Therefore, CTSO-C115d and DO-283B can be used as the basis for formulating the CTSO function and compliance verification methods for the flight management system.

[0004] CTSO-C115d is suitable for various flight management systems, including flight management systems with dedicated flight management computers FMC and control display units CDU. However, as the hardware of computing and processing modules gradually becomes universal, functional software such as flight management, flight display, and navigation display are separately arranged on universal processing modules to share resources. The current mainstream flight management system belongs to this situation. The flight management system software resides on the core processing module CPM in the avionics core processing APC cabinet, and the flight management system functional performance is achieved by using the computing, storage and other resources of the IMA platform.

[0005] The flight management system products of foreign avionics companies have long been installed and operated, and have obtained multiple flight management system CTSO certificates. Domestic flight management systems are still in the stage of technical research and prototype trial production, and there are no flight management system products that have completed random certification and CTSO certification. How to conduct CTSO certification for flight management software as a pure software resident application is a brand new topic for domestic civil aircraft manufacturers, research institutes, design companies, etc. Summary of the invention

[0006] The purpose of the invention is to provide an incremental flight management software CTSO forensics method based on the IMA platform. Aiming at the demand for CTSO forensics of domestic flight management software, an incremental flight management software CTSO forensics method based on the IMA platform is proposed. This method fully combines the characteristics of the flight management system as a pure software product, draws on the concept of DO-297 based on incremental certification, and based on TSO-C153a, TSO-C214, CTSO-C115d and other standards, a CTSO incremental forensics method for a flight management system resident as pure software is formulated.

[0007] The object of the present invention is achieved through the following technical solutions:

[0008] An incremental flight management software CTSO certification method based on the IMA platform specifically includes the following steps:

[0009] (1) The IMA platform on which the flight management software resides is approved by TSO-C153a;

[0010] (2) Establish communication channels with the TSO-C153a-authorized IMA platform and obtain relevant data;

[0011] (3) Perform incremental activities on the IMA platform authorized by TSO-C153a to generate incremental compliance data;

[0012] (4) Complete flight management software development and verification, CTSO functional performance compliance verification on the IMA platform authorized by TSO-C153a, and generate compliance data for minimum operational performance standards;

[0013] (5) The flight management software must be approved by TSO-C214 and CTSO-C115d.

[0014] Preferably, a communication channel is established with an IMA platform authorized by TSO-C153a and relevant data is obtained. The specific method of step (2) includes:

[0015] (21) Establish communication methods with applicants for IMA platforms authorized by TSO-C153a;

[0016] (22) Obtain relevant data of the IMA platform, including certification plan, design performance statement, user manual, installation manual, environmental assessment plan and report, etc.;

[0017] (23) Obtain timely information on design changes, opening problem reports, incident reports, airworthiness directives, etc. of the IMA platform.

[0018] Preferably, incremental activities are performed on an IMA platform authorized by TSO-C153a to form incremental compliance data. The specific method of step (3) includes:

[0019] (31) Conduct safety feature analysis of flight management system based on IMA platform;

[0020] (32) Identify and quantify the resources of the IMA platform used by the flight management software, including hardware resources, operating system software and driver software, health monitoring resources, and fault management resources;

[0021] (33) Identify and quantify unused IMA platform resources and capabilities.

[0022] Preferably, flight management software development and verification and CTSO functional performance compliance verification are completed on an IMA platform authorized by TSO-C153a to form compliance data for minimum operational performance standards. The specific method of step (4) includes:

[0023] (41) Carry out the development of flight management system, comply with the requirements of IMA system member specifications, and develop CTSO functions in accordance with CTSO-C115d standard requirements;

[0024] (42) Carry out the development of flight management software, comply with the allocated resources, and ensure that the software development meets the objectives of DO-178 and DO-297 task 2;

[0025] (43) Carry out integration and verification of flight management software;

[0026] (44) Conduct flight management system integration verification and partial integration verification for Task 3;

[0027] (45) Complete the flight management software CTSO minimum operational performance standards compliance demonstration.

[0028] The beneficial effects of the present invention are:

[0029] This invention proposes an incremental flight management software CTSO forensics method based on the IMA platform, which fully combines the characteristics of the flight management system as a pure software product, draws on the concept of DO-297 based on incremental certification, and formulates a CTSO incremental forensics method for a flight management system that is resident as pure software based on standards such as TSO-C153a, TSO-C214, and CTSO-C115d. The publication of this method can effectively support flight management system designers and manufacturers in formulating flight management system CTSO forensics plans. It is a method that is easy to implement in engineering and has important practical application significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a method and steps for CTSO certification of incremental flight management software based on the IMA platform. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] This embodiment aims at the demand of CTSO certification of domestic flight management software, and proposes an incremental CTSO certification method for flight management software based on IMA platform. It fully combines the characteristics of flight management system as a pure software product, draws on the concept of DO-297 based on incremental certification, and formulates a CTSO incremental certification method for flight management system as pure software based on TSO-C153a, TSO-C214, CTSO-C115d and other standards. Figure 1 As shown, the specific steps include:

[0033] (1) The IMA platform on which the flight management software resides is approved by TSO-C153a;

[0034] (2) Establishing a communication channel with the IMA platform authorized by TSO-C153a and obtaining relevant data. The specific method of step (2) includes:

[0035] (21) Establish communication methods with applicants for IMA platforms authorized by TSO-C153a;

[0036] (22) Obtain relevant data of the IMA platform, including certification plan, design performance statement, user manual, installation manual, environmental assessment plan and report, etc.;

[0037] (23) Obtain timely information on design changes, opening problem reports, incident reports, airworthiness directives, etc. of the IMA platform.

[0038] (3) Performing incremental activities on the IMA platform authorized by TSO-C153a to generate incremental compliance data. The specific method of step (3) includes:

[0039] (31) Conduct safety feature analysis of flight management system based on IMA platform;

[0040] (32) Identify and quantify the resources of the IMA platform used by the flight management software, including hardware resources, operating system software and driver software, health monitoring resources, and fault management resources;

[0041] (33) Identify and quantify unused IMA platform resources and capabilities.

[0042] (4) Complete flight management software development and verification and CTSO functional performance compliance verification on the IMA platform authorized by TSO-C153a to generate minimum operational performance standards compliance data. The specific methods of step (4) include:

[0043] (41) Carry out the development of flight management system, comply with the requirements of IMA system member specifications, and develop CTSO functions in accordance with CTSO-C115d standard requirements;

[0044] (42) Carry out the development of flight management software, comply with the allocated resources, and ensure that the software development meets the objectives of DO-178 and DO-297 task 2;

[0045] (43) Carry out integration and verification of flight management software;

[0046] (44) Conduct flight management system integration verification and partial integration verification for Task 3;

[0047] (45) Complete the flight management software CTSO minimum operational performance standards compliance demonstration.

[0048] (5) The flight management software must be approved by TSO-C214 and CTSO-C115d.

[0049] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. An incremental flight management software CTSO certification method based on the IMA platform, specifically comprising the following steps: (1) The IMA platform on which the flight management software resides is approved by TSO-C153a; (2) Establish communication channels with the TSO-C153a-authorized IMA platform and obtain relevant data; (3) Perform incremental activities on the IMA platform authorized by TSO-C153a to generate incremental compliance data; (4) Complete flight management software development and verification, CTSO functional performance compliance verification on the IMA platform authorized by TSO-C153a, and generate compliance data for minimum operational performance standards; (5) The flight management software must be approved by TSO-C214 and CTSO-C115d.

2. The incremental flight management software CTSO evidence collection method based on the IMA platform as claimed in claim 1, characterized in that: In step (2), a communication channel is established with the IMA platform authorized by TSO-C153a and relevant data is obtained. The specific method includes: (21) Establish communication methods with applicants for IMA platforms authorized by TSO-C153a; (22) Obtain relevant data of the IMA platform, including the certification plan, design performance statement, user manual, installation manual, environmental assessment plan and report; (23) Obtain timely information on design changes, opening problem reports, incident reports, and airworthiness directives of the IMA platform.

3. The incremental flight management software CTSO evidence collection method based on the IMA platform as claimed in claim 1, characterized in that: In step (3), incremental activities are performed on the IMA platform authorized by TSO-C153a to form incremental compliance data. The specific method includes: (31) Conduct safety feature analysis of flight management system based on IMA platform; (32) Identify and quantify the resources of the IMA platform used by the flight management software, including hardware resources, operating system software and driver software, health monitoring resources, and fault management resources; (33) Identify and quantify unused IMA platform resources and capabilities.

4. The incremental flight management software CTSO evidence collection method based on the IMA platform as claimed in claim 1, characterized in that: In step (4), the flight management software development and verification and CTSO functional performance compliance verification are completed on the IMA platform authorized by TSO-C153a. The specific method includes: (41) Carry out the development of flight management system, comply with the requirements of IMA system member specifications, and develop CTSO functions in accordance with CTSO-C115d standard requirements; (42) Carry out the development of flight management software, comply with the allocated resources, and ensure that the software development meets the objectives of DO-178 and DO-297 task 2; (43) Carry out integration and verification of flight management software; (44) Conduct flight management system integration verification and partial integration verification for Task 3; (45) Complete the flight management software CTSO minimum operational performance standards compliance demonstration.

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