Loading...
Please wait, while we are loading the content...
Similar Documents
Fiber composite fan blade impact improvement
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Graff, J. Stoltze, L. Varholak, E. M. |
| Copyright Year | 1976 |
| Description | The improved foreign object damage resistance of a metal matrix advanced composite fan blade was demonstrated. The fabrication, whirl impact test and subsequent evaluation of nine advanced composite fan blades of the "QCSEE" type design were performed. The blades were designed to operate at a tip speed of 282 m/sec. The blade design was the spar/shell type, consisting of a titanium spar and boron/aluminum composite airfoils. The blade retention was designed to rock on impact with large birds, thereby reducing the blade bending stresses. The program demonstrated the ability of the blades to sustain impacts with up to 681 g slices of birds at 0.38 rad with little damage (only 1.4 percent max weight loss) and 788 g slices of birds at 0.56 rad with only 3.2 percent max weight loss. Unbonding did not exceed 1.1 percent of the post-test blade area during any of the tests. All blades in the post-test condition were judged capable of operation in accordance with the FAA guidelines for medium and large bird impacts. |
| File Size | 4006168 |
| Page Count | 76 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760023208 |
| Archival Resource Key | ark:/13960/t2x39k55v |
| Language | English |
| Publisher Date | 1976-02-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Fans Improvement Compressor Rotors Compressor Blades Impact Resistance Birds Composite Structures Foreign Bodies Aircraft Hazards 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 |
