#2786361 - 12/02/06 04:30 AM
Re: Old Rheinbeck Airdrome: Fokker D7 flat turns in 8 seconds
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Joined: Nov 2006
Posts: 12
Blue Dog
Junior Member
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Junior Member
Joined: Nov 2006
Posts: 12
Daytona Beach, Florida
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Right now, I'm talking about a zero bank, rudder turn. Whereby the pilot utilizes only rudder to turn the aircraft. Yes, Neal, you are correct in your statement that when rudder is applied and one wing moves faster through the air (forward of the other wing) it generates more lift. So a left rudder turn would require right aileron in order maintain wings level throughout the turn. like I said before, such maneouvers are for training purposes only! If you get too slow and don't ride the buffet just right, your going to find yourself in a spin real fast.
No avionics? No problem!
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#2786364 - 12/03/06 02:33 PM
Re: Old Rheinbeck Airdrome: Fokker D7 flat turns in 8 seconds
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Joined: Dec 2000
Posts: 8,556
Li'lJugs
Hotshot
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Hotshot
Joined: Dec 2000
Posts: 8,556
St. Cloud MN USA
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Originally posted by PHilA: I have a few WWI 3-channel R/C biplanes that fly on rudder and elevator alone and turns are made entirely with the rudder. The wing dihedral gives them stability in the turn. But the turns are relatively "flat" since there are no ailerons to bank the wings. Aircraft without adequate dihedral are harder to control on rudder-elevator control only because the dihedral helps correct any drop in wing tips--poor man's aileron. But planes with no dihedral do perform "flatter" flat turns as there is no wing dihedral to induce yaw in the turn. I have seen 3 ch. model triplanes with no dihedral fly in this manner. Full constant rudder will likely put them into a spin in a turn, so you "bang" the rudder gradually it to keep the model steady in the turn. The added lift of the three wings also helps. The real DR.1 and D-VII had very little dihedral so they should have been capable of very flat turns.
I may be wrong here, but aren't the aerodynamics much different on small (read: RC) airplanes, due to the Reynold's numbers? (I am drawing on 30+ year old memories here, so may be way off base.)
Hi, I'm Larry and this my brother Dayrle, and this is my other brother Dayrle.
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#2786368 - 12/04/06 03:22 PM
Re: Old Rheinbeck Airdrome: Fokker D7 flat turns in 8 seconds
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Joined: Sep 2001
Posts: 2,890
Warbirds
Senior Member
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Senior Member
Joined: Sep 2001
Posts: 2,890
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As far as R/C planes flying like the real thing, I fly R/C scale and have flown many R/C WWI planes. The last was an electric powred Dr1. They fly very similar to the real job and even down to the very small carry the traits of the real planes fm. The Dr1 can turn circles on itself and almost catch it's own tail, looks like my dog does when he thinks his tail is a cat The Dr1 will also do a cool flat turn if you coordinate the rudders with aileron to keep it level. Not sure how tight, winter here now so can't go out and test for you. It seemed tighter than most ships I fly for sure. I also fly WWII warbirds and they unfortunatly also take on the traits of the full size ship. Hard to fly and will snap if you sneeze. My qualification in this subject is my site http://www.rcwarbirds.com
"A time when America was great,,when the chrome was thick and the women were straight" - Micheal Savage
"If you really want to experience flight in this life then you have to strap a DC-3 to your ass." - Buffalo Joe McBryan President & Captain Buffalo Airways
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