That new composite LH2 fuel-tank Q&A.

• That new composite LH2 fuel-tank Q&A. by Moe Grills on 22 Jul, 2014 23:12
•   Could one of you explain mathematically, and by hypothetical examples, how this revolutionary composite -material built LH2 fuel-tank (now being tested by NASA) will have an great advantage over conventional fuel tanks?
• #1 by Jim on 23 Jul, 2014 02:38
• Quote from: Moe Grills on 22 Jul, 2014 23:12

    Could one of you explain mathematically, and by hypothetical examples, how this revolutionary composite -material built LH2 fuel-tank (now being tested by NASA) will have an great advantage over conventional fuel tanks?
  

  
  It supposedly is lighter.
• #2 by AnalogMan on 23 Jul, 2014 07:27
• Quote from: Moe Grills on 22 Jul, 2014 23:12

    Could one of you explain mathematically, and by hypothetical examples, how this revolutionary composite -material built LH2 fuel-tank (now being tested by NASA) will have an great advantage over conventional fuel tanks?
  

  
  Cost and mass advantages - see this post:
  
  

  Quote from: AnalogMan on 28 May, 2014 23:17

  Composite Cryotank Testing Kicks Off At Marshall Center
  The Marshall Star - May 28, 2014
  
  Engineers recently began the first in a series of tests of one of the largest composite cryotanks ever built. The 18-foot-diameter (5.5-meter) cylinder-shaped tank was lowered into a structural test stand at NASA’s Marshall Space Flight Center.
  
  [...]
  
  The composite cryotank is part of NASA’s Game Changing Development Program and Space Technology Mission Directorate, which is innovating, developing, testing and flying hardware for use in NASA’s future missions. NASA focused on this technology because composite tanks promise a 30 percent weight reduction and a 25 percent cost savings over the best metal tanks used today.
  
  http://www.nasa.gov/sites/default/files/files/star140528.pdf