Meeting highest performance requirements for lowest price and mass for the M1 segment support unit for E-ELT

Computer Science – Performance

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

The largest optical telescope in the world will be the E-ELT. Its primary mirror will be 42m in diameter. This mirror will consist of 984 hexagonal segments that are all individually supported. Each mirror will be controlled in six DOF while local shaping of the segments is provided by so called warping harnesses. These will correct for focus, astigmatism and trefoil. Hence a mirror with an extreme diameter to thickness ratio of almost 30 is obtained. Its support structure must guarantee a maximum surface form error of 30 nm rms independent of the segment attitude. Furthermore its stiffness to mass ratio must allow natural frequencies of 50Hz or higher to obtain sufficient bandwidth for the actuators that control the piston and tip/tilt of the segment. Designing such structure is a challenge that has been successfully completed. Three prototypes have been built and are about to be delivered to ESO. This paper discusses the main performance requirements and how they could be transferred into an elegant structure design. Furthermore an overview will be given on the main performance parameters in order to see whether the present design can be further optimized.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Meeting highest performance requirements for lowest price and mass for the M1 segment support unit for E-ELT does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Meeting highest performance requirements for lowest price and mass for the M1 segment support unit for E-ELT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Meeting highest performance requirements for lowest price and mass for the M1 segment support unit for E-ELT will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1376433

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.