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Latest Rocket propellants Stories

Future SLS Missions May Benefit From Marshall-Developed Hardware For Propellant Tanks
2014-07-15 03:30:45

By Megan Davidson, NASA Take a two-liter bottle, and fill it with water. Now, turn it upside down. Did you see a lot of bubbles as the liquid drains rapidly from the top? That's because air is trying to get back in the bottle due to the low pressure created in the space above the liquid as it runs out. [ Watch the Video: 'Diffusing' In Propellant Tanks May Benefit Future SLS Missions ] When it comes to liquid propellant tanks for rockets, the same scenario applies. While the engines...

Understanding Fluid Slosh To Improve Rocket Safety And Efficiency
2013-12-17 07:38:16

NASA Since Robert Goddard's first launch of a liquid propellant rocket in 1926, experts have worked to perfect engine propulsion systems. As launch vehicles have grown in size, fuel and oxidizer tanks have become more complex resulting in unexpected changes in thrust, potentially endangering flight crews and mission success. A team of scientists and engineers at NASA's Kennedy Space Center in Florida is now studying how to better understand this phenomenon and reduce its potential impacts...

NASA Switches To A Greener Rocket Fuel
2013-05-07 16:32:54

Brett Smith for redOrbit.com - Your Universe Online NASA has announced that it will stop using the rocket fuel that has been an aeronautics mainstay since the 1940s and switch to a greener, environmentally-benign propellant. The space agency says that the first space flight powered with this new fuel will take place in 2015. Hydrazine was used to power the first rocket-powered fighter plane in World War II, the Viking Missions of the 1970s, and more recently the Curiosity mission...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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