The document outlines a case study on the Hubble Space Telescope, highlighting its development setbacks including delays, cost overruns, and a significant optics error in its primary mirror. It discusses the planning and care taken in its creation, the consequences of the errors faced, and the solutions implemented to rectify the issues. Additionally, it poses questions regarding what went wrong, the impacts of these errors, and the systems engineering processes that should be considered for future space telescopes like the James Webb Space Telescope.

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Case Study - "Hubble Trouble":
Some years ago work began on the development of the Hubble
Space Telescope....which was placed into low earth orbit in
1990.
The capability provided by the Hubble Space Telescope is a
historic prescedent for mankind.....vis a vis the advanced
imaging of the cosmos.....from a vantage point in space....free
from image distortion caused by the earth's atmosphere.
Considerable care and planning was associated with the
development of this complex space based instrument.
Unfortunately, the Hubble Space Telescope experienced several
delays and cost over-runs.
The deployment of the Hubble Space Telescope was further
delayed due to the un-related loss of the Space Shuttle
Challenger.
Once the Hubble Space Telescope was ultimately deployed it
was discovered that the telescope suffered from a significant
optics error in the development of it's primary reflecting mirror.
Fortunately, a team was able to develop a solution to address
this error....at considerable additional expense....and
opportunity loss (vis a vis...the re-allocation of space shuttle
missions to implement the solution....).
Questions:
What went wrong in the development of the Hubble Space
Telescope ?
What was the impact / consequences associated with this error ?
What actions did the Hubble Space Telescope development team
employ to preclude the problem from happening ?

2. Why weren't the actions that the team employed sufficient to
prevent this embarassing problem from occuring ?
What Systems Engineering processes / actions should the James
Webb Space Telescope development team consider employing to
preclude such a problem from occuring in this successor space
telescope ?
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