noun
variable pitch propeller
Technical term used in aviation and marine engineering for a propeller whose blade angle can be adjusted to change thrust or efficiency.
この飛行機は可変ピッチプロペラを装備している。
This aircraft is equipped with a variable pitch propeller.
Compound of 可変 (kahen, 'variable') + ピッチ (pitchi, from English 'pitch') + プロペラ (puropera, from English 'propeller').