gravity-assist

• Manoeuvre de vol spatial qui utilise le champ gravitationnel d'une planète pour modifier la vitesse et la trajectoire d'un engin spatial, permettant d'économiser du carburant.

A trajectory in spaceflight that passes close to a planetary body in order to gain energy from its gravitational field.

1. Gravitational slingshotC2formalscientific

   A spaceflight maneuver where a spacecraft passes close to a planet or other celestial body to use its gravitational field to alter its speed and trajectory, effectively gaining energy without using fuel.

   assistance gravitationnelle

   • The Voyager probes used a gravity-assist from Jupiter to reach the outer planets.
   • Mission planners calculated a precise gravity-assist trajectory around Saturn.
   • A gravity-assist maneuver can significantly reduce travel time to distant targets.