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| | | | | | | Herschel acoustic and vibration tests
Herschel vibration tests
30 June 2008
The Herschel spacecraft is now undergoing a series of mechanical tests at ESA’s European Space Research and Technology Centre, ESTEC. The tests are carried out to ensure that the spacecraft can withstand the acoustic and vibration loads that it will encounter during launch.
The vibration tests were started on Friday, 20 June and will be completed next week. In the video, taken on 23 June, the spacecraft can be seen fastened on an electrodynamic shaker inside a clean room. It is seen being shaken along its longitudinal axis (the X-axis) at frequencies starting from 4 Hertz, increasing to 100 Hertz over a period of about 80 seconds.
| | | Herschel being prepared for acoustic tests |
Such vibration tests will also be performed along the two lateral axes (the Y and the Z axis), four times each, with differing loads each time. The spacecraft’s electronic components are checked for normal functionality before and after each run.
| | Herschel acoustic tests | |
Earlier this month, on 5 and 6 June, Herschel successfully passed the acoustic test. During the test, the spacecraft was subjected to acoustic noise, generated to simulate the noise levels that it will encounter during launch. The test was carried out at ESTEC’s Large European Acoustic Facility (LEAF).
| | | Herschel being prepared for acoustic tests |
The Herschel infrared observatory’s telescope will carry the largest mirror ever flown in space. With this telescope and its three science instruments, it will observe and study relatively cool objects everywhere in the Universe, in unprecedented detail. Herschel will study the birth and evolution of a wide range of celestial bodies - from stars in our own backyard to distant galaxies.
| | Herschel acoustic tests | |
For more information:
Thomas Passvogel, ESA Herschel and Planck Project Manager
Email: Thomas.Passvogel @ esa.int
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| | More about... HerschelHerschel fact sheetISO overviewPlanck overviewRelated articles Herschel spacecraft assembly completeHerschel's heart and brain mated‘Heart’ of Herschel to be presented to mediaGetting ready for HerschelHerschel passes a new milestoneHerschel 'service module' ready for final integrationRead more Observations: Seeing in infrared wavelengthsL2, the second Lagrangian PointWhy infrared astronomy is a hot topicThe infrared explorersRelated ESA publications Herschel fact sheet (pdf)Herschel brochure (pdf)In depth Herschel in depthElectrodynamic shakers
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