Helicopter blade tracking system
US5671051A · kind A · utility
13Cited by
10References
16Claims
0Family size
Inventor
Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter blade tracking system including an apparatus and method having a self-contained light unit on each blade; each light unit being of similar construction and matched in size and weight. Rings of light formed by the light units during blade rotation are observed by the operator during hover and blade angular position is changed to bring the rings of light into one multi-colored ring of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.