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Single-stage experimental evaluation of tandem-airfoil rotor stator blading for compressors. part 6: data and performance for stage d
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Clemmons, D. R. |
| Copyright Year | 1973 |
| Description | An axial flow compressor stage, having single-airfoil blading, was designed for zero rotor prewhirl, constant rotor work across the span, and axial discharge flow. The stage was designed to produce a pressure ratio of 1.265 at a rotor tip velocity of 757 ft/sec. The rotor had an inlet hub/tip ratio of 0.8. The design procedure accounted for the rotor inlet boundary layer and included the effects of axial velocity ratio and secondary flow on blade row performance. The objectives of this experimental program were: (1) to obtain performance with uniform and distorted inlet flow for comparison with the performance of a stage consisting of tandem-airfoil blading designed for the same vector diagrams; and (2) to evaluate the effectiveness of accounting for the inlet boundary layer, axial velocity ratio, and secondary flows in the stage design. With uniform inlet flow, the rotor achieved a maximum adiabatic efficiency of 90.1% at design equivalent rotor speed and a pressure ratio of 1.281. The stage maximum adiabatic efficiency at design equivalent rotor speed with uniform inlet flow was 86.1% at a pressure ratio of 1.266. Hub radial, tip radial, and circumferential distortion of the inlet flow caused reductions in surge pressure ratio of approximately 2, 10 and 5%, respectively, at design rotor speed. |
| File Size | 13535818 |
| Page Count | 264 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740004336 |
| Archival Resource Key | ark:/13960/t9v16t20g |
| Language | English |
| Publisher Date | 1973-11-30 |
| Access Restriction | Open |
| Subject Keyword | Propulsion Systems Tables Data Turbocompressors Performance Tests Rotor Blades Turbomachinery Rotor Stator Interactions Stator Blades Inlet Flow Secondary Flow Tip Speed Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
