ANALYTICAL STUDY OF UNCONVENTIONAL PUMPS FOR WATERJET PROPULSION.
Abstract
The performance characteristics of special-design pumps for waterjet propulsion were investigated. The study dealt mainly with the performance of one-element pumps (i.e., consisting of a rotor only). The general theory of this family of pumps was developed, as well as the relationship between pump geometry and performance. Two specific configurations of one-element pumps are introduced: the atmospheric-pressure pump and the HYDROCKET. Their performance, as pumps and as propulsors, is analyzed in detail. It was found that such pumps can be compact because they operate at high rotative speeds. Their efficiency can be good (although the energy of the whirl component is not utilized), provided that the internal-friction losses can be kept low. A two-element nozzle pump is also introduced, and its probable performance is discussed briefly. A preliminary design is presented for an atmospheric-pressure pump. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1968
- Accession Number
- AD0834794
Entities
People
- Joseph Levy
- Sydney Davis
Organizations
- Aerojet Rocketdyne Holdings