The drag of spherical rubber balloons

✍ Scribed by W. W. Mapleson

• Book ID: 104571616
• Publisher: John Wiley and Sons
• Year: 1954
• Tongue: English
• Weight: 202 KB
• Volume: 80
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49708034517

✦ Synopsis

Abstract

An empirical relation C~d~ = 2.7 × 10^5^ R^−1^ is given between drag coefficient, C~a~, and Reynolds number R, for a captive, nominally spherical, rubber balloon, for the range log~10~ R = 5.1 to 5.8. It is suggested that the drag increases as the shape of the balloon progressively deviates from the spherical. A calibration of a Meteorological Office radiosonde windmill as a cup anemometer is also included.