No Subject Forum: Spacesettlers
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# 1459 byaglobus@... on May 9, 2002, 3:55 p.m.
Member since 2021-10-03
10-20 cm ropes of single walled carbon nanotubes have now been built.
Zhu, C. L. Xu, D. H. Wu, B. Q Wei, R. Vajtai, and P.M. Ajayan, Science
Volume 296, pages 884-886, 3 may 2002 reports synthesis of 10-20 cm
ropes of single walled carbon nanotubes. Stress testing indicates a
Young's modulus of 77 GPascal. The theoretical Young's modulus of a
single carbon naontube is about 1000 GPascal.
This is a big step towards a space elevator, although we still need a
eight orders of magnitude in length and perhaps a factor 10 in strength.
Can anyone give a good explanation of Young's modulus?
Space tourism could be our ticket to the stars. Save your pennies,
suborbital flights for $100,000 may start in 2005! See
http://www.spaceadventures.com/suborbital for details.
Al Globus
CSC at NASA Ames Research Center
http://www.nas.nasa.gov/~globus/home.html