Gravity assist - Wikipedia
WEBA gravity assist around a planet changes a spacecraft's velocity (relative to the Sun) by entering and leaving the gravitational sphere of influence of a planet. The sum of the kinetic energies of both bodies remains constant (see elastic collision).
Basics of Spaceflight: A Gravity Assist Primer - NASA Science
WEBThe "gravity assist" flyby technique can add or subtract momentum to increase or decrease the energy of a spacecraft's orbit. Generally it has been used in solar orbit, to increase a spacecraft's velocity and propel it outward in the solar system, much farther away from the Sun than its launch vehicle would have been capable of doing.
Gravity Assists - NASA Science
WEBGravity Assists. From Cassini's launch through the mission's Grand Finale, “gravity assists” were essential to making the spacecraft go where the scientists wanted it to go. This propellant-saving, mission-enabling technique has been used in solar system exploration since the early 1970s.
Gravity assist - The Planetary Society
WEBSep 27, 2013 — Interplanetary spacecraft often use a maneuver called a gravity assist in order to reach their targets. Voyager 2 famously used gravity assists to visit Jupiter, Saturn, Uranus and Neptune in the late 1970s and 1980s.
How “Slingshotting” Works for Space Flight: A Gravity Assist …
WEBJul 10, 2020 — Gravity assist is a space exploration technique that uses the gravitational force of celestial bodies to alter the velocity and trajectory of a spacecraft. A Gravity Assist Primer. The “gravity assist” concept has proven fundamental to exploring our “back yard” — the solar system.
How Do Gravity Assists Work? - timeanddate.com
WEBIn a gravity assist maneuver, a spacecraft uses a planet’s gravity and movement around the Sun to help it speed up or slow down. How does this work? Let’s take specific examples from the Voyager 1 and BepiColombo missions.
How Does a Martian -Style Gravity Assist Actually Work?
WEBJan 3, 2019 — What the heck is a gravity assist and how does it work? The first question is easy—a gravity assist (also called a gravity slingshot) is a space maneuver in which a spacecraft gets a speed...
Chapter 4: Trajectories - NASA Science
WEBThis momentum can be tapped to accelerate spacecraft on so-called "gravity-assist" trajectories. It is commonly stated in the news media that spacecraft such as Voyager, Galileo, and Cassini use a planet's gravity during …
Gravity Assists | Mission – NASA Solar System Exploration
WEBFrom Cassini's launch through the mission's Grand Finale, “gravity assists” were essential to making the spacecraft go where the scientists wanted it to go. This propellant-saving, mission-enabling technique has been used in solar system exploration since the early 1970s.
Gravity Assist | Time and Navigation - Smithsonian Institution
WEBA spacecraft can use the gravity of one celestial body to propel it toward another. While the trajectory is longer than a more direct route, a “gravity assist” saves fuel. But it requires complex calculations, precise navigation, and atomic clocks for timing.