Fan lift-cruise v/stol aircraft
US4022405A · kind A · utility
65Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Mar 25, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C29/0025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An aircraft for making vertical and short field takeoffs is powered by a ass turbofan engine having a core turbojet and a bypass fan. For vertical takeoffs, the efflux from the bypass fan is deflected downward to create lift. Exhaust from the core turbojet is ducted to turbine driven lifting fans at remote locations to create supplemental lifting forces which also provide aircraft control and stability. For cruise, the bypass fan efflux is discharged aft until sufficient forward airspeed is attained that exhaust gas flow to the lifting fans may be shut off, and exhaust gas flow may also be discharged aft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.