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| Aviation Discussion on the aircraft of WWII. |
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06-15-2009, 06:33 PM
| #1 |
| Junior Member Join Date: Jun 2009 Location: Connecticut
Posts: 2
| Asymetrical Wing Lengths In the Squadron Signal book "Macchi C.205 Veltro Walk-Around", it mentions "As with all Macchi fighters, the C.205's starboard wing was 20cm shorter in span to compensate for propeller torque." How common was this ? |
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06-15-2009, 11:19 PM
| #2 |
| Senior Member  Join Date: Apr 2009 Location: South Carolina
Posts: 3,722
  | I've never even heard of that before.
__________________ "Those who forget the past are condemned to repeat it" "Those who dwell in the past, condemn the future"  |
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06-16-2009, 06:59 AM
| #3 |
| Senior Member  Join Date: Mar 2008 Location: Appalachian Foothills in Virginia
Posts: 189
| I'm with you fellas, on this one. I had never heard this either, not doubting what you'd read, Ural...just it comes as news to me. If the starboard wing was required to be a wee bit shorter to compensate for engine torque does this just represent an instability of the Macchi design or do other planes have the same problem. I know there are some pilots and aviation engineers types around so I am quite curious to hear from them. Regards, Derek |
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06-16-2009, 08:25 AM
| #4 |
| IP/Mech THE GREAT GAZOO   Join Date: Apr 2005 Location: Colorado, USA
Posts: 16,049
| I would not be surprised. I've heard of off setting the vertical stabilizer as well.
__________________ "IF ITS RED OR DUSTY, DON'T TOUCH IT"  |
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06-16-2009, 08:42 AM
| #5 |
| Senior Member  Join Date: Oct 2006 Location: Genoa, Italy
Posts: 186
| Yes, it's true: both Macchi's C.202 and C.205 (that were equipped with the same wing type) had asymmetrical wings for torque compensating.  Cheers Last edited by Marcogrifo; 06-17-2009 at 08:20 AM. |
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06-16-2009, 04:50 PM
| #6 |
| Senior Member  Join Date: Aug 2006 Location: A Swede living in Glasgow, Scotland
Posts: 15,128
| I'll be..... 
__________________  JAN "Felicis Tredecim" "I´m going back to the front to relax" "THE BLACK CATS FLIES TONIGHT" "Find your enemy and shoot him down - everything else is unimportant!" "When you're out of F-8's... You're out of fighters!"  |
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06-16-2009, 05:03 PM
| #7 |
| Senior Member  Join Date: Dec 2006 Location: FL
Posts: 3,294
| I wonder if there were any negative side effects? i cant believe I didnt know about that... . |
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06-16-2009, 06:26 PM
| #8 |
| Senior Member Join Date: Jan 2009 Location: United Kingdom
Posts: 1,759
| So how would that work? Which wing would be shorter wrt prop rotation? My take on torque-related problems is that the ground-handling characteristics got nastier, how would this help? |
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06-16-2009, 09:06 PM
| #9 |
| Senior Member  Join Date: Feb 2005
Posts: 6,107
| As mentioned, it was to counter torque effects and yaw. The vertical stabilizer was slightly twisted to the left for the same reason.
__________________  It was like being pushed by an Angel! - Adolf Galland I'm an educated engineer, so I love being technical and appraising of great inventions. So if you think I am being biased about something: Tell me! Then you'll probably find out that I am not  |
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06-16-2009, 11:32 PM
| #10 |
| Senior Member Join Date: Apr 2009 Location: South Carolina
Posts: 3,722
| Why do I picture two guys screwing up and making one wing longer then the other with one of them saying: "it's to compensate for propeller torque.....really!"
__________________ "Those who forget the past are condemned to repeat it" "Those who dwell in the past, condemn the future" |
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06-17-2009, 12:02 AM
| #11 |
| Senior Member Join Date: Jan 2009 Location: South Shore of Nova Scotia
Posts: 299
| I never knew that, but then I'm not all that familiar with Italian fighters. Does anyone know if this was the case with any other fighters? JL PS: I seem to recollect that some fighters had the engine thrustline offset from the longitudinal axis of the fuselage to reduce torque effects. Is this true, or am I just confused again? Last edited by Butters; 06-17-2009 at 12:07 AM. Reason: For the PS |
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06-17-2009, 12:32 AM
| #12 |
| Senior Member  Join Date: Aug 2008 Location: Redding, California
Posts: 3,346
| Blohn and Voss were working with Asymetrical configurations, although they took it to an extreme. Thier best known example would be the Bv141. I think the BvP178 was the best looking of thier designs, though it didn't get past the testing stages.
__________________  "Look back over the past, with its changing empires that rose and fell, and you can foresee the future." - Marcus Aurelius, Emperor of Rome > I Support Doug Gillis < |
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06-17-2009, 01:22 AM
| #13 | |
| Senior Member  Join Date: Apr 2009 Location: Auckland
Posts: 157
| Quote:
Most aircraft, no matter how low-powered have either the vertical fin or the engine offset by a small (2-3º) amount. It's fairly hard to see, unless you are looking straight down on the aircraft when the cowls are off. | |
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