Search Results

You are looking at 1 - 2 of 2 items for

  • Author or Editor: Harold N. Murrow x
  • Refine by Access: All Content x
Clear All Modify Search

passive falling sphere systems

a review of symposium on inflatable falling spheres for obtaining atmospheric measurements to 100 km

Harold N. Murrow
Full access
Harold N. Murrow
Robert M. Henry


Rigid spherical balloons were released in still air to assess magnitudes of possible self-induced motion. They were found to exhibit oscillations similar to those previously reported for rubber balloons. These oscillations are not simple sinusoidal motion, and are not limited to a single plane. The root-mean-square horizontal velocity is proportional to the vertical terminal velocity, and for the ROSE sphere appears to he one-half the terminal velocity. Slight roughening (roughness ratio = 0.0016) had no apparent effect. Greater roughness (roughness ratio = 0.03) appears to reduce the amplitude and predominant wavelength of the oscillation.

Full access