Wind tunnel study of an observatory dome with a circular aperture

Details Wind tunnel study of an observatory dome with a circular aperture Wind tunnel study of an observatory dome with a circular aperture

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9115040z&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Apertures, Astronomical Observatories, Domes (Structural Forms), Telescopes, Wind Tunnel Tests, Flow Velocity, Shapes, Vibration, Wind Tunnels

Scientific paper

Results of a wind tunnel test of a new concept in observatory dome design, the Fixed Shutter Dome are presented. From an aerodynamic standpoint, the new dome configuration is similar in overall shape to conventional observatory domes, with the exception of the telescope viewing aperture. The new design consists of a circular aperture of reduced area in contrast to conventional domes with rectangular or slotted openings. Wind tunnel results of a side-by-side comparison of the new dome with a conventional dome demonstrate that the mean and fluctuating velocity through the aperture and in the center of the new dome configuration are lower than those of conventional domes, thus reducing the likelihood of telescope flow-induced vibration.

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