gravity effect

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• Gravity Probe B — ( GP B ) is a satellite based mission which launched in 2004. The spaceflight phase lasted until 2005, and data analysis is currently under way (as of May 2008) and may continue to into 2010 [ [http://einstein.stanford.edu/highlights/status1.html …   Wikipedia

• Gravity Probe B — Спутник Gravity Probe B Заказчик …   Википедия

• Gravity-gradient stabilization — is a method of stabilizing artificial satellites in a fixed orientation using only the orbited body s mass distribution and the Earth s gravitational field. The main advantage over using active stabilization with propellants, gyroscopes or… …   Wikipedia

• Gravity assist — In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist or swing by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in… …   Wikipedia

• Gravity model of trade — The gravity model of trade in international economics, similar to other gravity models in social science, predicts bilateral trade flows based on the economic sizes of (often using GDP measurements) and distance between two units. The model was… …   Wikipedia

• Gravity Probe B mission timeline — The Gravity Probe B mission timeline describes the events during the flight of Gravity Probe B, the science phase of its experimental campaign, and the analysis of the recorded data.Mission progress* April 20, 2004 ** Launch of GP B from… …   Wikipedia

• Gravity drag — In astrodynamics and rocketry, gravity drag (or gravity losses) is the difference between the delta v expended and the actual change in speed achieved by a spacecraft thrusting while in a gravitational field.Gravity losses depend on the time over …   Wikipedia

• Gravity bong — Waterfall method= Similar in design to the bucket method is the fountain method, also known as a waterfall bong or flood (southern US colloquialism). A Fountain usually consists of a plastic bottle with a hole punched at the bottom and a… …   Wikipedia

• Gravity anomaly — A gravity anomaly is the difference between the observed gravity and a value predicted from a model. Geodesy and geophysicsIn geodesy and geophysics, the usual model is the surface of a global spheroid (ellipsoid of Hayford or WGS84) by rather… …   Wikipedia

• Gravity turn — A gravity turn or zero lift turn is a maneuver (see trajectory optimization) used in launching a spacecraft into, or descending from, an orbit around a celestial body such as a planet or a moon. This launch trajectory offers two main advantages… …   Wikipedia

• Gravity current — In fluid dynamics, a gravity current is a primarily horizontal flow in a gravitational field that is driven by a density difference, hence gravity currents also sometimes being referred to as density currents . Typically, the density difference… …   Wikipedia