Waspie_Dwarf Posted December 21, 2016 #1 Share Posted December 21, 2016 Engineers examine unexpected readings from JWST shake test Quote NASA says engineers are diagnosing the source of “anomalous readings” during a recent vibration test of the sensitive optics and sensors at the heart of NASA’s James Webb Space Telescope. In a status report posted to the JWST mission website, officials wrote that the anomalous accelerometer readings produced no visible signs of damage to the observatory, which engineers are stressing with a specially-crafted vibration rig to ensure it can survive the rigors of launch. Read More: Spaceflight Now 3 Link to comment Share on other sites More sharing options...
Merc14 Posted December 22, 2016 #2 Share Posted December 22, 2016 I hope it is nothing serious, I am so looking forward to this telescope coming on line successfully. I have vivid memories of Hubble and its early problems but this machine has no second chances once it is safely away. 6 Link to comment Share on other sites More sharing options...
Waspie_Dwarf Posted January 3, 2017 Author #3 Share Posted January 3, 2017 NASA's Webb Telescope to Resume Vibration Testing in January Quote Vibration tests are one of the many tests that spacecraft and instruments endure to ensure they are fit for spaceflight. During routine testing of NASA's James Webb Space Telescope, an unexpected response occurred from several of the more than 100 devices designed to detect small changes in the motion of the structure. This prompted the engineers put the vibration tests on hold to determine the cause. Since then, the team of engineers and scientists have analyzed many potential scenarios for the measured responses. They are closer to pinning down the cause, and have successfully conducted three low-level vibrations of the telescope. All visual and ultrasonic examinations of the structure continue to show it to be sound. Read More: NASA Link to comment Share on other sites More sharing options...
Waspie_Dwarf Posted January 26, 2017 Author #4 Share Posted January 26, 2017 NASA Restarts Rigorous Vibration Testing on the James Webb Space Telescope Quote Testing on the James Webb Space Telescope successfully resumed last week at NASA's Goddard Space Flight Center, in Greenbelt, Maryland. On December 3, 2016, vibration testing automatically shut down early due to some sensor readings that exceeded predicted levels. After a thorough investigation, the James Webb Space Telescope team at NASA Goddard determined that the cause was extremely small motions of the numerous tie-downs or “launch restraint mechanisms” that keep one of the telescope’s mirror wings folded-up for launch. Read More: NASA 1 Link to comment Share on other sites More sharing options...
Merc14 Posted April 26, 2017 #5 Share Posted April 26, 2017 The cause of this anomaly has been tracked down to a latch designed to hold in place one of the wings of JWST's primary mirror. http://www.space.com/36600-james-webb-space-telescope-vibration-test-anomaly-explained.html?utm_source=facebook&utm_medium=social Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now