May 1959 / Also issued as: Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1959 / Includes bibliographical references (leaf ) / The experimental performance of two axial inducers is presented. One of the :designs is analytical and includes radial equilibrium considerations. The other is a simple helix, with a constant pitch angle. The performance data consists of two parts; conventional non-cavitating pump performance, and performance with cavitation. High speed pictures of the cavitation formations were taken.