Abstract: The drag force, instantaneous canting angle and response characteristics are discussed for large hydrometeors in horizontally accelerated airflow. Comparisons of calculated canting angles are made with data from an aircraft ...

Abstract: A formula has been developed for computing the terminal velocity V from a reference velocity V0 by use of an adjustment factor f=V/V0 for a change in altitude or electric force. The drag coefficients for bodies of regular ...

Abstract: Experimental scavenging efficiencies were measured for freely falling drops of 0.40?0.85 mm diameter and charges of 10?5?10?3 esu supported by the vertical airstream of the UCLA cloud tunnel. The particles in the airstream ...

Abstract: The terminal velocity of cloud and precipitation size drops has been analyzed for three physically distinct flow regimes: 1) slip flow about a water drop treated as rigid sphere at negligible Reynolds numbers, 2) continuum ...

Abstract: A theory based on the distortion of large water drops is used to calculate the drag and acceleration ofdrops in the laboratory from rest to terminal velocity. The results show that the drag coefficient curve foreach drop ...

Abstract: The velocities of cloud and precipitation drops aloft are obtained from the sea level velocity by multiplication with an adjustment factor. For cloud drops (1?40 µm diameter) the adjustment factor is found from the ...

Abstract: Radar techniques involving polarization measurements depend critically on the non-spherical shape of the scatterers. In particular, it is often assumed that the equilibrium axial ratio measured under conditions of laminar ...

Abstract: Measurements of the drag on small water drops falling in water-saturated air at terminal velocity were carried out in a wind tunnel for Reynolds numbers R between 0.2 and 200. The fractional deviation (D/Ds) ? 1 of the ...

Abstract: Collection efficiencies for accretion were measured for six pairs of nearly unchanged drops. Cloud droplets of 11 and 17 ?m and collector drops between 100 and 400 ?m radius were used. The resulting efficiencies were in ...

Abstract: A theory for canting has been developed from the response of raindrops to shear produced by homogeneous, isotropic turbulence. The model predicts small canting angles, with the tangent of the angle having a Gaussian ...