The James Webb Space Telescope's SunshieldMembrane

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    A full-scale JWST sunshield membrane deployed on the membrane test fixture at Mantech, Hunstville, ready for a precise measurement of its three dimensional shape. The JWST sunshield comprises five of these layers, each of which has to be precisely spaced with respect to the next.

    Credit: Northrop Grumman Aerospace Systems

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    Diego Gravinese, gonzalo oxenford, and 3 other people added this photo to their favorites.

    1. ElitePhotobox2 17 months ago | reply

      This might be worth a thought
      the sunshield membrane is a bit like a solar sail,
      the Hubble is close to the earth
      and is inside the earth's magnetic field,
      although the James Webb will be at gravity lagrange point L2
      what about solar flares, they are very fast and have a lot of power
      and it is a gravity focus point
      if a solar flare was to go past the earth could it be
      given a gravity and magnetic sling shot like the voyagers'
      and come round and hit the James Webb from the sides above or below,
      the sunshield membrane
      would it then act like a solar sail and push it forward,

      I would have thought that the sunshield membrane would have formed a hood
      covering the back to help protect it,
      and allow for the telescope to move around more and still be protected,

      if a light is shone on the secondary mirror from the back of the telescope
      can it be seen by it's camera ?

      having the sides of the sunshield membrane open,
      might allow the solar wind to bounce around inside
      the layers creating vibration,
      a bit like Hubble's early solar wings when they vibrated
      will they start to vibrate like big drums resonating against each other,
      suggestion extend the bottom bars and bend them up
      and use the bottom sunshield membrane to cover the gaps.
      having them tight could cause them to resonate and the energy to bounce back
      but slack, it would be like throwing seeds at an empty paper bag,

      It's better to think of everything before,
      than find out everything after !

      suggestion for refilling and fixing
      an upgraded Robonaut 2
      with jet pack from the space station and a small ion engine for long trips
      a refill tank for the James Webb and other satellites
      you have fitted the refill point ?

      It could also be used to refill and fix other satellites
      and clear space junk, these could be used for training !
      as well as give NASA an extra income.

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