chase plane

Noun

An aircraft that flies alongside another, to advise or photograph it while experimental flights are being carried out.

Japanese Meaning

実験飛行中の航空機に同行し、状況の確認や撮影を行うための追跡飛行機 / 試験飛行時に対象機の状態を監視・記録するため、隣を飛行する航空機

The chase plane maintained formation to photograph the prototype during its high-speed run.

追尾観測機は、プロトタイプの高速飛行中に編隊を維持して撮影を行った。

Sense（1）

An aircraft that flies alongside another, to advise or photograph it while experimental flights are being carried out.

chase planes

（ plural ）