Droplet Sizing Research Program.

A three-year program in droplet sizing research has been completed. The major accomplishments include 1 Establishing the errors and limitations associated with the Visibility technique 2 Development of two new technique utilizing absolute scattered light 3 Extension of techniques to submicron particles 4 Extension of techniques to nonspherical drops 5 A solid spray diagnostic capability which has been synergistic with many programs from other agencies of the Air Force AEDC, BMO, Wright-Patterson, the Government and Industry. The new techniques have been applied to the measurement of sprays and solid particles with accuracies better than 10 and dynamic ranges between 10 and 30. Complex bimodal, trimodal and quadramodal distributions have been measured with an accuracy and resolution exceeding all available techniques. Keywords Particle velocity, Mass flux, Nonintrusive, and Advanced laser diagnostics.