Title:
WING AND PROPELLER SYSTEM, METHOD OF OPTIMIZING WING AND PROPELLER/ROTOR SYSTEM AND METHOD OF REDUCING INDUCED DRAG
Document Type and Number:
WIPO Patent Application WO/2011/021206
Kind Code:
A3
Abstract:
The disclosure relates to Aeronautics, more particularly relating to wing planforms that reduce wing drag substantially in aircraft driven by propellers or other rotors in tractor configuration. An aircraft comprising a wing and propeller system (1), said system comprising wing planform (2) characterized into wing chord regions (3) behind each propeller/rotor (5) whose length is relatively varied with respect to length of wing chord regions (4) at outboard of the propeller/rotor (5) towards wing tip and/or at inboard of the propeller (5) towards fuselage, and plurality of propellers (5) fixed ahead of wing leading edge such that induced drag is reduced by exploiting the velocity field generated by the slipstream of the propeller (5). Also, provides for a method of optimizing wing and propeller system and a method reducing induced drag, among other possible parameters of interest.
Inventors:
NARASIMHA RODDAM (IN)
DESHPANDE SURESH MADHUSUDAN (IN)
PRAVEEN CHANDRASHEKARAPPA (IN)
RAKSHITH BELUR RAGHAVAN (IN)
DESHPANDE SURESH MADHUSUDAN (IN)
PRAVEEN CHANDRASHEKARAPPA (IN)
RAKSHITH BELUR RAGHAVAN (IN)
Application Number:
PCT/IN2010/000448
Publication Date:
April 14, 2011
Filing Date:
July 05, 2010
Export Citation:
Assignee:
JNCASR BANGALORE (IN)
NARASIMHA RODDAM (IN)
DESHPANDE SURESH MADHUSUDAN (IN)
PRAVEEN CHANDRASHEKARAPPA (IN)
RAKSHITH BELUR RAGHAVAN (IN)
NARASIMHA RODDAM (IN)
DESHPANDE SURESH MADHUSUDAN (IN)
PRAVEEN CHANDRASHEKARAPPA (IN)
RAKSHITH BELUR RAGHAVAN (IN)
International Classes:
B64F5/00; B64C3/10; G06F17/10; G06Q99/00
Foreign References:
| US20090152405A1 | 2009-06-18 |
Other References:
VELDHUIS, L.L.M. ET AL.: "A Simple Wing Optimization Code Including Propeller Effects. paper ICAS-98-2.3.4", 21ST CONGRESS OF INTERNATIONAL COUNCIL OF THE AERONAUTICAL SCIENCES, 13 September 1998 (1998-09-13) - 18 March 1998 (1998-03-18), XP008148201
VELDHUIS, L.L.M.: "`Optimization of Tractor Propeller/Wing Configurations", PROCEEDINGS OF THE INSTITUTE OF MECHANICAL ENGINEERS, PART G: JOURNAL OF AEROSPACE ENGINEERING 1989 - 1996, vol. 209, no. G3, 1995, pages 215 - .226, XP008148229
VELDHUIS, L.L.M.: "`Optimization of Tractor Propeller/Wing Configurations", PROCEEDINGS OF THE INSTITUTE OF MECHANICAL ENGINEERS, PART G: JOURNAL OF AEROSPACE ENGINEERING 1989 - 1996, vol. 209, no. G3, 1995, pages 215 - .226, XP008148229
Attorney, Agent or Firm:
RANGAPPA, Paramenahalli, Himantharaju, Dodda et al. (#4121/B 6th Cross, 19A Main,HAL II Stage ,Bangalore, 8, Karnataka, IN)
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