항공기에서 소프트웨어가 차지하는 비중은 점점 늘어나는 추세이다. 항공 전자 시스템의 기능에 대한 요구는 점점 커지고 있으며 시스템의 복잡성을 증대시키고 있다. 이러한 추가되는 기능들로 인해 코드의 양이 늘어나고 있으며 이에 대한 비용이 증가하고 있다. 또한 컴퓨터, 센서, 디스플레이 등과 같은 항공 전자 시스템의 기술 영역들은 빠르게 성장하여 부피와 무게 및 에너지 소모 등의 비용은 줄어든 반면 성능은 크게 향상되었다. 이런 변화에 맞추어 항공 전자 시스템의 구조도 변화하고 있으며 탑재되는 항공용 운영체제도 그에 맞게 변화하고 있다. 항공용 운영체제에 필요한 기술과 최신 운영체제 현황에 대하여 소개한다.
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