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Propellers and helicopter blades of fiber-reinforced synthetic resin materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Huetter, U. |
| Organization | The National Aeronautics and Space Administration (NASA) |
| Copyright Year | 1974 |
| Abstract | SHELL STRUCTURES FOR PROPELLERS AND HELICOPTER BLADES ARE PREDOMINANTLY UNDER CENTRIFUGAL LOADS AND THEREFORE ESSENTIALLY SUBJECTED TO SUCH EXTENSIVE RADIAL STRESSES THAT FULL ADVANTAGE CAN BE TAKEN OF THE HIGH TENSILE STRENGTH OF STRAND-REINFORCED SYNTHETIC RESIN MATERIALS. GREAT DIFFICULTIES HAVE BEEN ENCOUNTERED IN THE PAST WITH THE DIFFUSION OF END LOADS INTO FIBERGLASS REINFORCED COMPOUND MATERIALS. THESE DIFFICULTIES, HOWEVER, CAN BE OVERCOME BY APPLYING THE LOOP METHOD, A METHOD BY WHICH THE DIFFUSION INTO VARIOUS STRANDS IS ACCOMPLISHED BY MEANS OF LOOPS FORMED BY CONTINUOUS LAYERS OF STRANDS. BY SPECIAL TREATMENT OF THE STRANDS BEFORE BEING PLACED INTO THE MOULD, ANY ARBITRARY DISTRIBUTION OF THICKNESS OF THE SHELLS CAN BE ACHIEVED WITHOUT USING SPECIAL JIGS. THE APPLICATION OF VARIOUS MANUFACTURING TECHNIQUES TO THE MANUFACTURE OF AEROFOILS IN LARGE INTERVAL FLOW ENGINES, PROPELLERS AND HELICOPTER BLADES IS ILLUSTRATED. |
| File Size | 741887 |
| File Format | |
| Alternate Webpage(s) | http://www.archive.org/details/nasa_techdoc_19740023380 |
| Archival Resource Key | ark:/13960/t3pv7735r |
| Language | English |
| Publisher Date | 1974-08-01 |
| Access Restriction | Open |
| Subject Keyword | Asymptotes Differential Equations Linear Systems Linear Equations Matrices (mathematics) Time Constant Time Lag Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
