V2EX true airspeed

True Airspeed

释义 Definition

真空速(TAS):飞机相对于周围空气团的实际飞行速度。它不同于指示空速(IAS),会受到高度与温度(空气密度)影响;在高空或空气更稀薄时,在相同IAS下,TAS通常更高。该术语在航空导航、性能计算与飞行计划中很常用。

发音 Pronunciation (IPA)

/tru e.spid/

例句 Examples

The true airspeed is 120 knots.
真空速是120节。

After correcting for temperature and altitude, the pilot found the true airspeed was higher than the indicated airspeed, which changed the estimated time en route.
在对温度和高度进行修正后,飞行员发现真空速高于指示空速,这也改变了预计航程时间。

词源 Etymology

true 在这里表示“真实的、经过修正后的”,强调不是仪表直接读数;airspeed 指“空中速度”。合在一起,true airspeed 就是“相对空气的真实速度”,常与由皮托管/空速表得到的指示值(IAS)进行对比,用于更准确的导航与性能计算。

相关词 Related Words

文学与著名作品 Literary Works

  • Pilot’s Handbook of Aeronautical Knowledge(FAA 飞行员航空知识手册):在空速类型与性能/导航章节中系统使用 true airspeed
  • Aerodynamics for Naval Aviators(海军飞行员空气动力学):在空气动力与速度换算(含马赫数相关)内容中多次出现 true airspeed
  • Jeppesen Student Pilot Route Manual(杰普森学员航线手册/教材系列):在飞行计划、风三角与航行计算部分使用 true airspeed
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