Loading...
Please wait, while we are loading the content...
Similar Documents
Ultra high tip speed (670.6 m/sec) fan stage with composite rotor: aerodynamic and mechanical design
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Halle, J. E. Burger, G. D. Dundas, R. E. |
| Copyright Year | 1977 |
| Description | A highly loaded, single-stage compressor having a tip speed of 670.6 m/sec was designed for the purpose of investigating very high tip speeds and high aerodynamic loadings to obtain high stage pressure ratios at acceptable levels of efficiency. The design pressure ratio is 2.8 at an adiabatic efficiency of 84.4%. Corrected design flow is 83.4 kg/sec; corrected design speed is 15,200 rpm; and rotor inlet tip diameter is 0.853 m. The rotor uses multiple-circular-arc airfoils from 0 to 15% span, precompression airfoils assuming single, strong oblique shocks from 21 to 43% span, and precompression airfoils assuming multiple oblique shocks from 52% span to the tip. Because of the high tip speeds, the rotor blades are designed to be fabricated of composite materials. Two composite materials were investigated: Courtaulds HTS graphite fiber in a Kerimid 601 polyimide matrix and the same fibers in a PMR polyimide matrix. In addition to providing a description of the aerodynamic and mechanical design of the 670.0 m/sec fan, discussion is presented of the results of structural tests of blades fabricated with both types of matrices. |
| File Size | 5749470 |
| Page Count | 200 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770013157 |
| Archival Resource Key | ark:/13960/t0qr9m867 |
| Language | English |
| Publisher Date | 1977-03-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Compressor Rotors Rotor Blades Turbomachinery Compressor Efficiency Composite Structures Ultrahigh Vacuum Aerodynamic Loads High Pressure 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 |
