Engineered ceramic components for the leading edge of a helicopter rotor blade
US5542820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Dec 23, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/4736
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An engineered ceramic component for the leading edge of a rotor blade provides enhanced erosion protection therefor. In one embodiment, the engineered ceramic component includes a strain isolator member, an aerodynamic ceramic member, a first adhesive bond layer, and a second adhesive bond layer. The strain isolator member, which is operative to minimize strain transfer between the rotor blade infrastructure and the aerodynamic ceramic member, is configured so that inner mold line surface thereof is complementary to outer mold line surface of the rotor blade infrastructure. The aerodynamic ceramic member, which is operative to provide enhanced erosion protection for the respective leading edge of the rotor blade, is configured so that the outer mold line surface thereof defines the aerodynamic configuration of the respective leading edge and the inner mold line surface is complementary to the outer mold line surface of the strain isolator member. The aerodynamic ceramic member is fabricated from an engineered ceramic material, which are defined in the present context as ceramic materials having a hardness greater than 1200 kg/mm.sup.2 and an average flexural strength equal to or gr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.