|
[Sponsors] |
February 15, 2000, 22:16 |
Ring Wing
|
#1 |
Guest
Posts: n/a
|
Hello,
I've heard that a ring wing is twice as efficient as a corresponding planer wing. Does anybody know any reference to ring wings? (No aerodynamics books, as far as I know, discuss them. Why?) Thank you very much. |
|
February 15, 2000, 22:49 |
Re: Ring Wing
|
#2 |
Guest
Posts: n/a
|
Ring wings are more efficient, because of a lower induced drag. They are not used anymore because it is not practical and hard to manufacture. Some references can be found in Hoerner, Fluid dynamics drag.
|
|
February 17, 2000, 03:15 |
Re: Ring Wing
|
#3 |
Guest
Posts: n/a
|
Slightly different question.
Is any information on "box wings" available anywhere? |
|
February 29, 2000, 19:57 |
Re: Ring Wing
|
#4 |
Guest
Posts: n/a
|
Some References on ring wing:
(1)The aerodynamics of A Ring Airfoil, H,J, Stewart, Quarterly of Applied Mathematics, Vol.2, p136, July, 1944 (2)The Ring Airfoil in Nonaxial Flow, H.S. Ribner, Journal of the Aeronautical Sciences, p.529, Sept. 1947 (3)Theoretical Wave Drag and Lift of Thin Supersonic Ring Airfoils, H. Mirels, NACA TN1678, August, 1948 (4)Calculation of the Pressure Distribution and Streamline Pattern around a Ring Wing using Finite Difference Methods, M. J. Wagner, AIAA paper 0645, 1983 (5)Ring wing for an Underwater Missile, H. August and E. Carapezza, J. of Aircraft, vol.33, No.4, Aug 1996. p 830-832 (and also in p.837-839) It looks like ring wings are still alive in torpedoes! See (5). Regards, Nishikawa |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
3D Wing Analysis | Ed | FLUENT | 5 | April 13, 2019 14:07 |
[ICEM] O-grid around wing geometry | Anorky | ANSYS Meshing & Geometry | 15 | November 27, 2017 14:43 |
Forward swept wing simulation | abid | Siemens | 1 | June 16, 2012 14:26 |
[Gridgen] Blocking topology for blunt wing | siw | Main CFD Forum | 3 | July 21, 2010 14:55 |
Isolating wing induced drag component | siw | CFX | 2 | June 22, 2010 11:21 |