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Tag: satellite

Archive for satellite

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Orbital Dynamics by NASA

This excellent web site from NASA explains a lot about how orbits work. A geosynchronous orbit at an altitude of 35,786 kilometers (above sea level) allows a satellite to orbit at the same rate the Earth turns, so it always remains over the same spot on the planet below. Lagrange points are orbital sweet spots […]

Liquid Salt Space Thruster

Over the years, the design of space thrusters has struggled with problems like pressurized tanks and expensive propellants. Small satellites don’t need much thrust, but as atmospheric drag pulls them into a downward orbit spiral, they do need some adjustment to stay in orbit. A new thruster system about the size of a pack of […]

Satellite Launch From Aircraft

Airborne Launch Assist Space Access (ALASA) is a DARPA program designed to launch small satellites into low earth orbit with rockets fired from aircraft at high altitude. This has the ability to reduce costs and planning overhead. ALASA Concept Video [youtube.com] DARPA’s Airborne Launch Assist Space Access program (ALASA) seeks to propel 100-pound satellites into […]