V2EX instrument flight rules

Instrument Flight Rules

定义 Definition

Instrument Flight Rules(IFR,仪表飞行规则):一套航空飞行规则与程序,允许飞行员在主要依靠机载仪表(而非目视外界参照)进行导航、操纵与保持间隔的情况下飞行,通常适用于云中/低能见度等目视条件不足的环境,并需遵守空管放行、航路与高度等要求。(也常与 VFR 目视飞行规则相对。)

发音 Pronunciation

/nstrmnt flat rulz/

例句 Examples

The weather was bad, so the pilot filed instrument flight rules.
天气很差,所以飞行员提交了仪表飞行规则(IFR)飞行计划。

Under instrument flight rules, the aircraft must follow ATC clearances and published procedures to fly safely through cloud layers and reduced visibility.
在仪表飞行规则下,飞机必须遵循空管放行与公布的程序,才能在云层与低能见度条件中安全飞行。

词源 Etymology

该短语由 instrument(仪表)+ flight(飞行)+ rules(规则)构成,字面义为“依靠仪表进行飞行的规则”。它随着航空无线电导航、空中交通管制与标准化程序的发展而固定下来,成为国际民航体系中与 VFR 相对应的核心术语。

相关词 Related Words

文学与著名作品 In Literature & Notable Works

  • ICAO《Annex 2 Rules of the Air》:国际民航组织对 IFR/VFR 等规则的基础性规范文件中反复出现该术语。
  • FAA《Instrument Flying Handbook》:美国联邦航空局的仪表飞行教材,系统讲解 IFR 理论与程序。
  • FAA《Aeronautical Information Manual (AIM)》:涉及 IFR 运行、空域与通信程序等内容,常用该术语。
  • Ernest K. Gann《Fate Is the Hunter》:航空回忆录/文学作品中大量讨论恶劣天气与仪表飞行(IFR)的经验与风险。
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