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Latest Spacecraft propulsion Stories

2013-02-13 17:45:20

Electric rocket engines known as Hall thrusters, which use a super high-velocity stream of ions to propel a spacecraft in space, have been used successfully onboard many missions for half a century. Erosion of the discharge channels walls, however, has limited their application to the inner solar system. A research team at Caltech's Jet Propulsion Laboratory, in Pasadena, Calif., has found a way to effectively control this erosion by shaping the engine's magnetic field in a way that shields...

NASA To Test 13 New Reusable Flight Technologies
2013-01-22 18:50:00

Lee Rannals for redOrbit.com — Your Universe Online NASA said it has selected 13 new technologies to ride along payloads for flights on commercial reusable launch vehicles, balloons and a commercial parabolic aircraft in 2013 and 2014. The flights will enable participants to demonstrate their technologies, allowing them to touch the edge of space to see how well they will be prepared for the harsh conditions of spaceflight. Las Vegas-based Zero-G Corporation's parabolic...

Ask An Expert – The Woodward Effect
2012-11-26 08:05:01

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online This article is the latest installment in a new series where redOrbit´s in-house experts will answer questions submitted by you, the reader. Got a science or space question that´s stumping you? Each week we´ll select a handful of the wiliest questions you can whip up to tease the brains of our resident gurus (we call them ℠geeks´). Question: The Woodward effect is a weird result of General...

Rocket Fuel Used To Build Clean Cars
2012-11-02 10:44:16

ESA Austrian manufacturer MagnaSteyr has adapted technology developed for the Ariane rocket to build clean-burning cars that can use hydrogen instead of petrol for fuel. Hydrogen is the smallest molecule in the Universe. That makes keeping it in one place very, very difficult. To tap its tremendous potential as a fuel, spacecraft must be able to store liquid hydrogen at extremely low temperatures, then feed it smoothly to rocket engines. When ESA was developing its hydrogen-fuelled...

August X-51A Test Flight Crash Likely Due To Unlocked Actuator
2012-10-25 07:49:43

Lawrence LeBlond for redOrbit.com - Your Universe Online On August 14, 2012 the US Air Force conducted a scheduled test flight of its experimental X-51A Waverider aircraft. But the test ended in failure, with the plane crashing into the Pacific Ocean. Details of the failed flight were not provided at the time, and it was unclear if experiments would continue. Now, more than 2 months after that failed test, the Air Force has come forward and explained why the experimental hypersonic...

2012-10-02 08:41:03

NASA has awarded three contracts totaling $137.3 million to improve the affordability, reliability and performance of an advanced booster for the Space Launch System (SLS). The awardees will develop engineering demonstrations and risk reduction concepts for a future version of the SLS, a heavy-lift rocket that will provide an entirely new capability for human exploration beyond low Earth orbit. The initial 77-ton (70-metric-ton) SLS configuration will use two 5-segment solid rocket...

Hold Me Closer, Tiny Thruster
2012-08-17 13:13:07

Michael Harper for redOrbit.com — Your Universe Online Some MIT engineers have taken the old cliche “Good things come in small packages” to heart, creating a rocket thruster no larger than an American penny or postage stamp. These thrusters, which operate on jets of ion beams, could soon power some of the tiniest satellites in space. These “micro thrusters” were created by Paulo Lozano, an associate professor of aeronautics and astronautics at MIT....


Latest Spacecraft propulsion Reference Libraries

6_e1c9b89b48eaf2af7055b7bbebf1a19c2
2004-10-19 04:45:41

Escape Velocity -- An escape velocity is the minimum speed at which an object without propulsion can move away from a source of a gravitational field indefinitely if there is no friction. This definition may need modification for the practical problem of two or more sources in some cases. In any case, the object is assumed to be a point with a mass that is negligible compared with that of the source of the field, usually an excellent approximation. It is commonly described as the speed...

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Word of the Day
callithump
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'
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