Analytical Investigation of Air Dynamometer Concepts for Future Turboshaft Engines.
Abstract
This report is concerned with the analytical phase of the Navy's effort to develop the technology necessary for the design of dynamometers to meet the Navy's future needs. In the analytical phase, several compressor concepts were analyzed for feasibility. The analyses indicated that only the dynamic rotary compressors (centrifugal, radial-outflow, and axial) would be feasible for the dynamometers of specified requirements and general constraints. Therefore, several dynamic rotary compressor systems were selected and investigated for range extension with inlet and exit valves as well as with other possible range extension methods: bleed valve control, recirculation, water injection, and variable geometry. The results of the investigation were then employed for the evaluation and rating of the compressor systems based on several different factors relating to the dynamometer application. Based on the evaluation, a double-entry radial-outflow compressor with variable shroud for power modulation was selected as the optimum system. Also, an outline of an experimental program for the demonstration of the selected concept is given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1976
- Accession Number
- ADA108356
Entities
People
- S. N. Thirumalaisamy