オーベルト効こう果かMeanings1nounOberth effectTechnical term in astronautics: the efficiency gain from firing a rocket engine at high speed, especially near a massive body.オーベルト効こう果かを利り用ようすると、燃ねん料りょう効こう率りつが大おお幅はばに向こう上じょうする。By using the Oberth effect, fuel efficiency improves significantly.