マッハ数とは？
マッハ数 The ratio of the true airspeed of an aircraft to the speed of sound under the same atmospheric conditions. Used in ATC for speed assignments and reporting in high-speed flight.
Source: ICAO Doc 9432, FAA PCG
How is “マッハ数” Used in Practice?
マッハ0.80以上を維持してください。乱気流や性能制限で不可能な場合は報告してください。
Certification Exam Relevance
Who Needs to Know This Term?
- Pilots
- Air Traffic Controllers
- Cabin Crew
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マッハ数とは？
The ratio of the true airspeed of an aircraft to the speed of sound under the same atmospheric conditions. Used in ATC for speed assignments and reporting in high-speed flight.
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