Low drag high restoring moment airfoils
US9132914B2 · kind B2 · utility
1Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2012 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Sep 7, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C23/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor hub fairing system for use in a counter-rotating, coaxial rotary wing aircraft is provided including an upper hub fairing defined about an axis. A lower hub fairing is similarly defined about the axis. An airfoil shaped shaft fairing is disposed between the upper hub fairing and the lower hub fairing. The airfoil shaped shaft fairing has a thickness to chord (t/c) ratio in the range of about 20% and about 45%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.