Title:
DUCTED FAN CONFIGURATION FOR A VTOL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2010/067325
Kind Code:
A3
Abstract:
A ducted fan for a VTOL vehicle includes a substantially cylindrical duct having an inlet at an upper end and an outlet at a lower end, a propulsion unit inside the duct, between the inlet and the outlet, and at least one group of control vanes located above the inlet a distance equal to at least one-quarter vane chord length, while a related method includes the steps of (a) shaping the inlet of the duct to have a diameter equal to or less than a diameter of the duct proximate the outlet, and (b) locating a first group of inlet vanes a distance above the inlet as a function of duct inlet diameter, and still another method creates side forces and rolling moments through the use of cambered vanes.
Inventors:
YOELI RAPHAEL (IL)
Application Number:
PCT/IB2009/055656
Publication Date:
January 06, 2011
Filing Date:
December 10, 2009
Export Citation:
Assignee:
URBAN AERONAUTICS LTD (IL)
YOELI RAPHAEL (IL)
YOELI RAPHAEL (IL)
International Classes:
B64C29/00
Foreign References:
| US6561456B1 | 2003-05-13 | |||
| US3713748A | 1973-01-30 | |||
| US6808140B2 | 2004-10-26 | |||
| US3167273A | 1965-01-26 | |||
| US3179353A | 1965-04-20 | |||
| US4917332A | 1990-04-17 | |||
| US4828203A | 1989-05-09 |
Attorney, Agent or Firm:
SWIRSKY, Daniel J. (Beit Shemesh, IL)
Download PDF:
Previous Patent: A METHOD OF OPERATING A COMPUTING DEVICE TO PERFORM MEMOIZATION
Next Patent: DISPOSABLE DEVICE FOR PREPARING HOT BEVERAGES
Next Patent: DISPOSABLE DEVICE FOR PREPARING HOT BEVERAGES