• Journal of Advanced Navigation Technology
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• v.18 no.5
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• pp.445-454
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• 2014

In this paper, we introduce measures designed content for RTCA DO-160 F, Section 22 tests performed to verify the effects of indirect lightning and testing process of the test was carried out in the multi-purpose display certification process. This is referred to as indirect effects of lightning capability of an aircraft having electrical electronic equipment failure or damage to bring lightning induced voltages. In order to protect the avionics from lightning indirect effects of these aircraft are analyzing the effects of lightning strikes on aircraft and aircraft systems and interior design needs protection against the threat on their part. In this paper, we introduce RTCA DO-160 F, component selection process according to Section 22 category selection method and the selected level for determining the level of such measures for protection against lightning of multipurpose display for this aircraft. It also introduces the actual test process to confirm that the designed effectiveness of the selected part. We expect a good example of the lightning planned for future development of measures designed avionics through each step of the process introduced this.

• Journal of Aerospace System Engineering
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• v.14 no.spc
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• pp.13-21
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• 2020

RTCA DO-178C is a development guideline to ensure aircraft system airworthiness. However, there is an opinion that the application of DO-178C to the development of UAV of more than MTOW 150 kg is over regulated because the severity of the risk from UAV is lower than that of normal aircraft. To address issue, EASA and FAA have been working on the Re-Engineering and Streamlining the Standards for Avionics Certification(RESSAC) project since 2016 with the goal of establishing a new certification scheme that simplifies existing aircraft certification procedures and standards. This paper analyzes the current DO-178C certification process and presents advantages by comparing and analyzing the new RESSAC certification process, which simplifies processes and outputs in comparing with the DO-178C certification process, while it ensures flight safety of the vehicle.

• Journal of Aerospace System Engineering
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• v.17 no.6
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• pp.35-45
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• 2023

In this paper, we analyze the influence of indirect lightning strikes based on the structure of shielded cables used in an aircraft and propose a cable structure to enhance shielding effectiveness. Cables in an aircraft account for the largest proportion among components and play a crucial role in connecting aircraft frames and electronic devices; thus, making them highly influential. In particular, indirect lightning strike noise can lead to malfunctions and cause damage in aircraft electronic equipment, making the utilization of shielded cables essential for mitigating damage caused by indirect lightning strike noise. We conducted an analysis of the impact of indirect lightning strikes on aircraft shielded cables considering factors, such as the presence of shielding layers, core, and insulation in the cable structure. Furthermore, we validated our findings through simulations and experiments by applying the internationally recognized standard for indirect lightning, RTCA DO-160G Sec. 22.

• Journal of Advanced Navigation Technology
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• v.19 no.5
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• pp.395-402
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• 2015

This paper introduces the design details and test procedures of the lightning induced transient protection device for protecting the damage caused by indirect lightning strike on the computer mounted on the aircraft. Lightning induced surge voltage is bring a malfunction or damage to the aircraft electrical and electronic equipment, that is referred to indirect effects of lightning. In order to protect the electronic equipment on aircraft from the indirect effects of lightning, that is achieved by analyzing the effect on aircraft from lightning and protect design for each devices. In this paper, we introduce an indirect lightning strike level decisions, the protection circuit design method according to the chosen level through the RTCA DO-160G Section 22 category analysis and selection was performed in order to protect the damage caused by indirect lightning strikes in the protected equipment. In addition, we show the indirect lightning effects verification test performed to validate the designed protection circuits.

• Journal of Advanced Navigation Technology
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• v.19 no.1
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• pp.15-21
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• 2015

WA-DGNSS is a system to service for users using a satellite which received correction data from ground station that calculates the relative errors of the tracked GNSS signals and sends to a satellite. Users are guaranteed the reliability of the GNSS signal and the accuracy of positioning. ICAO recommends the application of WA-DGNSS for the airplane taking off and landing process. In this paper, we suggests methods to verify of the pre-developed WA-DGNSS reference software constituting modules and an integration test process refer to the RTCA DO-278 which is a document for the development process of an aeronautics software. Also, we statistically verified the reference software test through our methods. And then, we confirmed to performance the function of the reference software properly.

• Aerospace Engineering and Technology
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• v.6 no.1
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• pp.222-229
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• 2007

Environmental tests should be carried out to show that design performance is in an operational condition in an actual operational environment to assure maintainability and reliability. Aero-products electromagnetic compatibility tests are performed mainly for the individual parts and Specifications MIL-STD-461E and RTCA DO-160E are developed for the military and commercial parts tests respectively. The MIL-STD-461E which is a military environmental test standard is targeting all munitions and that user can apply by selecting applicable requirements from this specification. On the other hand, requirements are applied exclusively for the Avionics Equipments in commercial test standard.

• Journal of the Korea Institute of Military Science and Technology
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• v.10 no.1
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• pp.55-69
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• 2007

The paper provides the approach to apply formal methods to the development and certification criteria of defense safety/security-critical software. RTCA/DO-178B is recognized as a do facto international standard for airworthiness certification but lack of concrete activities and vagueness of verification/certification criteria have been criticized. In the case of MoD Def Stan 00-55, the guidelines based on formal methods are concrete enough and structured for the defense safety-related software. Also Common Criteria Evaluation Assurance Level includes the strict requirements of formal methods for the certification of high-level security software. By analyzing the problems of DO-178B and comparing it with MoD Def Stan 00-55 and Common Criteria, we identity the important issues In safety and security space. And considering the identified issues, we carry out merging of DO-178B and CC EAL7 on the basis of formal methods. Also the actual case studies for formal methods applications are shown with respect to the verification and reuse of software components.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.17 no.3
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• pp.51-60
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• 2009

For the world's safest air traffic, safety-related areas through the large investment made in a sufficient safe level, but the airport's lack of safety management is concerned about the safety. Airside area is essential area for the flights, and activities of safe management in airside area is very important. Grafting of airside safety management and IT, importance of the safety and efficiency is growing. Advanced airports of world has applied GIS over 10 years ago, and through applying GIS, Airports GIS has been a specialized area. Therefore, this research is for geographic information standards and related laws, providing a guideline of regulations and standards for AIXM (Aeronautical Information Exchange Model), RTCA DO-272A (USER REQUIREMENTS FOR AERODROME MAPPING INFORMATION), FAA Advisory Circular 150/5300 -18A (General Guidance and Specifications for Submission of Aeronautical Survey to NGS: Field Data Collection and Geographic Information System Standards), and by analyzing aviation information and air map(notice "Civil Aviation Safety Authority No. 2009-1"), provide the direction of standardization for air map.

• Journal of Aerospace System Engineering
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• v.6 no.3
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• pp.1-6
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• 2012

It is booming to use computer owing to the information society, and embedded software application have grown in airborne systems and equipment. So this introduces airborne software, RTCA DO-178B, life cycle and its data, and software development pitfalls in design and certification.

• The Journal of Aerospace Industry
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• s.68
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• pp.38-63
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• 2006

디지털 하드웨어가 값이 싸다는 것과 그 외형적 크기도 작아지고 있으며 소모 전력도 적다는 경향 때문에 항공에서 디지털 시스템의 사용이 현저하게 증가하게 되었다. 일부에서는 디지털 실용화가 아날로그 기반의 설계를 대체하기까지 하고 있으며 전연 새로운 개념이 도입되고 있는데 이는 모두 디지털 시스템 덕분이다. 대부분의 경우 항공에서 디지털 시스템은 안전에 치명적인 특성을 가지며 해당 소프트웨어의 오류로 항공기의 지속적인 비행과 착륙을 할 수 없는 고장을 유발할 수 있다. 이러한 이유로 항공기에 적용되는 소프트웨어의 인증이 대두되는 것이다. 이 글에서는 향후 우리나라에서도 전개될 소프트웨어의 인증에 대비하여 인증의 기준으로 적용되고 있는 RTCA DO-178B의 내용을 살펴보고 전형적인 항공기 또는 TSOA 인증과정에서의 소프트웨어의 승인 프로세스를 살펴보았다.