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Impact resistance of composite fan blades. [fiber reinforced graphite and boron epoxy blades for stol operating conditions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stubenrauch, K. R. Premont, E. J. |
| Copyright Year | 1973 |
| Description | The resistance of current-design Pratt and Whitney Aircraft low aspect ratio advanced fiber reinforced epoxy matrix composite fan blades to foreign object damage (FOD) at STOL operating conditions was investigated. Five graphite/epoxy and five boron/epoxy wide chord fan blades with nickel plated stainless steel leading edge sheath protection were fabricated and impact tested. The fan blades were individually tested in a vacuum whirlpit under FOD environments. The FOD environments were typical of those encountered in service operations. The impact objects were ice balls, gravel, stralings and gelatin simulated birds. Results of the damage sustained from each FOD impact are presented for both the graphite boron reinforced blades. Tests showed that the present design composite fan blades, with wrap around leading edge protection have inadequate FOD impact resistance at 244 m/sec (800 ft/sec) tip speed, a possible STOL operating condition. |
| File Size | 7291707 |
| Page Count | 77 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740004172 |
| Archival Resource Key | ark:/13960/t9w13tz3r |
| Language | English |
| Publisher Date | 1973-05-01 |
| Access Restriction | Open |
| Subject Keyword | Materials, Nonmetallic Turbine Blades Gas Turbine Engines Birds Ice Impact Tests Foreign Bodies Boron Composite Materials Epoxy Resins Reinforcing Fibers Graphite Impact Resistance Rocks Short Takeoff Aircraft 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 |
