“Anomalous Readings” in Testing 2018 James Webb Space Telescope. Bob Zimmerman, Behindtheblack.com.

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12-21-2016

(Photo: File:Scientists inspect one of the Webb telescope's mirrors.jpg)

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“Anomalous Readings” in Testing 2018 James Webb Space Telescope. Bob Zimmerman, Behindtheblack.com.

“Anomalous readings” detected during testing of Webb telescope

December 20, 2016 at 9:09 am Robert Zimmerman.

During standard vibration testing to simulate launch, engineers have detected what they call “anomalous readings” in the James Webb Space Telescope.

During the vibration testing on December 3, at Goddard Space Flight Center in Greenbelt, Maryland, accelerometers attached to the telescope detected anomalous readings during a particular test. Further tests to identify the source of the anomaly are underway. The engineering team investigating the vibe anomaly has made numerous detailed visual inspections of the Webb telescope and has found no visible signs of damage.

It is a good sign that they have found no damage. It is also a good thing that they detected these issues now, on the ground, where they can fix them. Webb, almost a decade behind schedule and $8 billion over budget, will be placed at a point a million miles from Earth, where no repair crew will be able to reach it.

http://behindtheblack.com/behind-the-black/points-of-information/anomalous-readings-detected-during-testing-of-webb-telescope/

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The James Webb Space Telescope is undergoing testing to make sure the spacecraft withstands the harsh conditions of launch, and to find and remedy all possible concerns before it is launched from French Guiana in 2018. During the vibration testing on December 3, at Goddard Space Flight Center in Greenbelt, Maryland, accelerometers attached to the telescope detected anomalous readings during a particular test. Further tests to identify the source of the anomaly are underway. The engineering team investigating the vibe anomaly has made numerous detailed visual inspections of the Webb telescope and has found no visible signs of damage. They are continuing their analysis of accelerometer data to better determine the source of the anomaly. They have conducted a low-level vibration of the hardware to measure its responses, and are comparing the results with data obtained prior to the anomaly. Engineers are currently running diagnostics to determine the cause and to assess any potential impacts. We will provide updates as they are available.

http://jwst.nasa.gov/vibrationTestStatus.html

Dec 22, 2016, 07:06 AM
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