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Latest Spacecraft propulsion Stories

2011-10-14 11:40:31

NASA, the National Reconnaissance Office (NRO) and the U.S. Air Force signed an agreement this week to establish clear criteria for certification of commercial providers of launch vehicles used for national security space and civil space missions.

2011-10-05 06:26:46

NASA has selected nine proposals to demonstrate new technologies for the second set of payloads to fly on commercial suborbital reusable launch vehicles and the Zero-G commercial parabolic aircraft.

2011-08-25 08:41:45

NASA and Alliant Techsystems Inc. (ATK) will conduct a full-scale test of a five-segment, solid rocket motor at the ATK Aerospace Systems test facility in Promontory, Utah, at 4:05 p.m. EDT, Thursday, Sept. 8.

2011-08-05 15:30:00

SACRAMENTO, Calif., Aug.

2011-08-03 07:00:00

PITTSBURGH, Aug. 3, 2011 /PRNewswire/ -- Power conversion specialist Converteam has been selected as the supplier of Integrated Power Systems (IPS) to the U.S.

2011-07-27 09:39:10

The MESSENGER spacecraft continued to fine-tune its orbit around Mercury yesterday afternoon when mission controllers at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md, successfully executed the second orbit-correction maneuver of the mission.


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
sudarium
  • A handkerchief.
  • Specifically— The legendary sweat-cloth; the handkerchief of St. Veronica, according to tradition miraculously impressed with the mask of Christ; also, the napkin about Christ's head (Johu xx. 7).
  • In general, any miraculous portrait of Christ.
The word 'sudarium' comes from a Latin word meaning 'a handkerchief'.