Thermally Driven Acoustic Oscillations in the NICMOS Dewar Cooling Line 972474
The Near Infrared Camera and Multi Object Spectrometer (NICMOS) was installed aboard the Hubble Space Telescope in February 1997. This instrument contains a solid nitrogen dewar for cooling infrared detectors to a temperature of 58 K. Gaseous helium flowing through a small diameter tube internal to the cryogen tank was used to freeze the nitrogen. A sudden and significant increase in the dewar heat leak during instrument development resulted in a detailed study of the possible causes. This investigation lead to the conclusion that thermally driven acoustic oscillations caused the anomalous heat transfer.
Citation: Schweickart, R. and Miller, C., "Thermally Driven Acoustic Oscillations in the NICMOS Dewar Cooling Line," SAE Technical Paper 972474, 1997, https://doi.org/10.4271/972474. Download Citation
Author(s):
Russell B. Schweickart, Chris D. Miller
Affiliated:
Ball Aerospace & Technologies Corp.
Pages: 15
Event:
International Conference On Environmental Systems
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1997 Transactions - Journal of Aerospace-V106-1
Related Topics:
Heat transfer
Telescopes
Acoustics
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