Whistle
From FIS Freestyle wiki
A whistle or call is a simple aerophone, an instrument which produces sound from a stream of forced air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.
[edit] Also see
- Windsock
- Aerial Check List
- Wind
- Anemometer
- Wind Vane
- Wind Speed
- Wind Direction
- Snow and Weather Glossary
- Wind Measurement Systems
- Aerial Course Specification
- Knoll
- LZ (Landing Zone)
- 4002
- Transition
- Inrun
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