JWST passed its final vibration testing Tuesday ensuring that the craft is finally fit for spaceflight. NASA has scheduled the telescope for an October 2018 launch, but the telescope was originally supposed to be launched in 2011 marking a long history of major cost overruns and delays.
NASA announced last December that the JWST was halfway completed, but the project is currently $7.2 billion over its initial budget and seven years behind the original schedule. The JWST was initially projected to cost $1.6 billion. The Government Accountability Office (GAO) now estimates the final cost of the telescope at $8.8 billion.
[...] During vibration testing in December at NASA's Goddard Spaceflight Center, accelerometers attached to the telescope detected "unexpected responses" and engineers were forced to shut the test down to protect the hardware. The kind of response NASA found could potentially create serious problems when the telescope is launched into space.
A government watchdog is warning that the launch of the James Webb Space Telescope (JWST), the long-awaited successor to the Hubble that's been beset by schedule snafus and cost overruns, might face further delays. NASA announced in September it had pushed back the launch date of the JWST from late 2018 to some time in the spring of 2019 due to testing delays partly blamed on Hurricane Harvey's impact on Texas' Gulf Coast in August.
On Wednesday, lawmakers on the House Science, Space and Technology Committee were told it could take even longer to launch the world's most powerful telescope. "More delays are possible given the risks associated with the work ahead and the level of schedule reserves that are now (below) what's recommended," said Cristina Chaplain, director of Acquisition and Sourcing Management for the Government Accountability Office.
[...] Thomas Zurbuchen, NASA's associate administrator for science missions, told lawmakers he expects the space agency will be able to meet the spring 2019 schedule. "I believe it's achievable," he said.