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Noun1.gravity-assist - (spaceflight) a trajectory that passes close to a planetary body in order to gain energy from its gravitational field
space travel, spacefaring, spaceflight - a voyage outside the Earth's atmosphere
trajectory, flight - the path followed by an object moving through space
References in periodicals archive ?
Each maneuver in the series sets up a subsequent gravity-assist flyby of Saturn's massive moon Titan, which reshapes the spacecraft's orbit, sending it to increasingly higher inclination with respect to Saturn's equator.
These trajectories optimize the gravity-assist technique used so successfully since NASA's Voyager missions to vastly reduce the acceleration needed to reach another celestial body.
Since its launch in 2004, Rosetta had to make three gravity-assist flybys of Earth and one of Mars to help it on course to its rendezvous with the comet, which allowed it to pass by asteroids teins and Lutetia, obtaining unprecedented views and scientific data on these two objects.
A v-profile belt guide provides reliable tracking and minimal hardware requirements while a gravity-assist head pulley scraper and an internal plow automatically clean both sides of the belt.
Furthermore, he purposefully entangles the saga of early robotic spacecraft in a distracting, episodic account of brilliant mathematician Michael Minovitch's efforts to receive credit as "inventor" of the gravity-assist method to speed spacecraft deeper into space.