Looking for an ARF with flaps
#1
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From: Galesburg,
MI
Does anyone know of a good ARF that has flaps? I'm looking for something with some decent aerobatic potential...preferably even 3D, but I want it to be something that looks sort of like a fighter, pretty fast, and pretty big (70+ inch wingspan).
The Obsession 3D pretty much fits what I want, but I'm pretty sure it doesn't have flaps.
Any ideas?
Thanks!
The Obsession 3D pretty much fits what I want, but I'm pretty sure it doesn't have flaps.
Any ideas?
Thanks!
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From: Hampton,
VA
question,
but why do you want it to have flaps?
Why not just use flaperons?
if you have center section falps, you have outer section ailerons, and won't work as well for 3D, as prop wash won't cover ailerons......
A hybrid is a 4 servo wing like an Ultra Stick and a complex radio mix.
but why do you want it to have flaps?
Why not just use flaperons?
if you have center section falps, you have outer section ailerons, and won't work as well for 3D, as prop wash won't cover ailerons......
A hybrid is a 4 servo wing like an Ultra Stick and a complex radio mix.
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From: Galesburg,
MI
hehe - Honestly I don't really know much about them (flaperons). I'm definately open to that...but I guess I'd need to do some reading. Is that basically an aileron that is split with independent control?
I'm off to Google!
I'm off to Google!
#8
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Flaps and 3D? This I gotta see!!! Also how do you get fighter looking plane that is pretty aerobatic and fast all together in one package? Try the WM Super Chipmunk ... has flaps and flies very nice aerobatics. Can go fast if you want it too but then all that is so subjective.
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From: Beaufort,
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Hello Lesath, Why so big? Anyways, Flaperons are independently controlled ailerons with the ability to act as normal flaps to help in slow speed lift for landings. They also still work as ailerons even in the down position to help in attituted control; It's actually not lift in the sense of the word it's air deflection. Where the servos can move the ailerons in the same direction, down to act as flaps. The opposite will be spoilerons where both ailerons move up to help slow the aircraft in a dive. Also with the ability to control attituted. If the ailerons are full wing length they will act as Flaps when in the down position more so than with standard ailerons. Of course your radio equipment will have to have some type of mixing capability. I'm Not going to say this true of all model airplanes but it's been my experience that do the fairly light wing loading of most model airplanes, now here's where I open the can of worms, most airplanes today can land slow enough were flaps are not nessessary. Only for looks and really are not very functional. OH BOY!
ISIS
ISIS
#11
ORIGINAL: Lesath
Does anyone know of a good ARF that has flaps? I'm looking for something with some decent aerobatic potential...preferably even 3D, but I want it to be something that looks sort of like a fighter, pretty fast, and pretty big (70+ inch wingspan).
The Obsession 3D pretty much fits what I want, but I'm pretty sure it doesn't have flaps.
Any ideas?
Thanks!
Does anyone know of a good ARF that has flaps? I'm looking for something with some decent aerobatic potential...preferably even 3D, but I want it to be something that looks sort of like a fighter, pretty fast, and pretty big (70+ inch wingspan).
The Obsession 3D pretty much fits what I want, but I'm pretty sure it doesn't have flaps.
Any ideas?
Thanks!
"Kangke Monocoupe 1/5 or 1/4 Scale ARF's"
#12
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From: Galesburg,
MI
ORIGINAL: Isis
Hello Lesath, Why so big? Anyways, Flaperons are independently controlled ailerons with the ability to act as normal flaps to help in slow speed lift for landings. They also still work as ailerons even in the down position to help in attituted control; It's actually not lift in the sense of the word it's air deflection. Where the servos can move the ailerons in the same direction, down to act as flaps. The opposite will be spoilerons where both ailerons move up to help slow the aircraft in a dive. Also with the ability to control attituted. If the ailerons are full wing length they will act as Flaps when in the down position more so than with standard ailerons. Of course your radio equipment will have to have some type of mixing capability. I'm Not going to say this true of all model airplanes but it's been my experience that do the fairly light wing loading of most model airplanes, now here's where I open the can of worms, most airplanes today can land slow enough were flaps are not nessessary. Only for looks and really are not very functional. OH BOY!
ISIS
Hello Lesath, Why so big? Anyways, Flaperons are independently controlled ailerons with the ability to act as normal flaps to help in slow speed lift for landings. They also still work as ailerons even in the down position to help in attituted control; It's actually not lift in the sense of the word it's air deflection. Where the servos can move the ailerons in the same direction, down to act as flaps. The opposite will be spoilerons where both ailerons move up to help slow the aircraft in a dive. Also with the ability to control attituted. If the ailerons are full wing length they will act as Flaps when in the down position more so than with standard ailerons. Of course your radio equipment will have to have some type of mixing capability. I'm Not going to say this true of all model airplanes but it's been my experience that do the fairly light wing loading of most model airplanes, now here's where I open the can of worms, most airplanes today can land slow enough were flaps are not nessessary. Only for looks and really are not very functional. OH BOY!
ISIS
I understand, obviously, that many people do this and that it works...I'm just trying to convince myself of why. ;-)
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From: Virginia Beach,
VA
Flaperons on a standard wing plane may or may not change the pitch. They increase drag, lower stall speed and provide lift. You can mix in down elevator if pitching up is a problem. On the delta wing Stryker, the elevons are rearward and can't help but control the pitch of the plane.
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From: Springtown,
TX
flaperons are typically only a good idea on planes that have strip ailerons. If you just have barn door ailerons on the outter portion of the wing, then you run the risk of stalling the tip ot the wing when flaperons are deployed--not exactly what you would want for a relaxing landing!@!!@!@!
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From: Beaufort,
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Lesath,
I.ll see if I can get this right for you. On a flyingwing aircraft The ailerons and elevator are called elevons. Meaning that the ailerons, elevator work in unisons to control the attitude of the aircraft. Ailerons for left ,right control. Elevator for up down control. There is more to this but I'll stay away from that for now.
To answer your question. On a flying wing since there is no fuselage the action of the elevons is more toward the extreme end of the spectrum, sort to speak. Takes very little input, movement of the surface, for an extreme reaction. Sudden rolls or sudden pitch. Which can end your day in a hurry. Reason is because the CG, Center of Gravity has a very narrow margin spanning the wing. Also the fact that the entire body is a lifting surface. The CG should be in my quesstamate for better control in flight, Forward rather than toward the rear? Also the elevons should have more upward travel than downward travel. I hope I did'nt just confuse you more? I'll try and explain this: If the center of gravity is moved slightly forward, slightly the key word here, the nose will have a tendency to drop or pitch down, This is true for all aircraft, so to counter this the elevator needs to have more upward movement to help the wing climb and, maintain trim for level flight and landings.
You won't need more down travel because of the forward CG. The plane will already have a dive tendancy so you will need less down travel.
The down side of a forward CG is that it increases the landing speed and stall speed.
Hope I helped and not confused you more. Remember: Flaporons: the ability of Ailerons to act as Flaps... Elevons: the ability of Ailerons to act as an Elevator.
ISIS
I.ll see if I can get this right for you. On a flyingwing aircraft The ailerons and elevator are called elevons. Meaning that the ailerons, elevator work in unisons to control the attitude of the aircraft. Ailerons for left ,right control. Elevator for up down control. There is more to this but I'll stay away from that for now.
To answer your question. On a flying wing since there is no fuselage the action of the elevons is more toward the extreme end of the spectrum, sort to speak. Takes very little input, movement of the surface, for an extreme reaction. Sudden rolls or sudden pitch. Which can end your day in a hurry. Reason is because the CG, Center of Gravity has a very narrow margin spanning the wing. Also the fact that the entire body is a lifting surface. The CG should be in my quesstamate for better control in flight, Forward rather than toward the rear? Also the elevons should have more upward travel than downward travel. I hope I did'nt just confuse you more? I'll try and explain this: If the center of gravity is moved slightly forward, slightly the key word here, the nose will have a tendency to drop or pitch down, This is true for all aircraft, so to counter this the elevator needs to have more upward movement to help the wing climb and, maintain trim for level flight and landings.
You won't need more down travel because of the forward CG. The plane will already have a dive tendancy so you will need less down travel.
The down side of a forward CG is that it increases the landing speed and stall speed.
Hope I helped and not confused you more. Remember: Flaporons: the ability of Ailerons to act as Flaps... Elevons: the ability of Ailerons to act as an Elevator.
ISIS
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From: Galesburg,
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So basically, since there is much more to the plane (ie - the fuselage and the actual elevator) than the flying wing, using the ailerons as flaps just generall won't have too much affect on atitude?
So in theory, worst case, I'd be looking at doing just a bit of mixing with the elevators?
Thanks for your help!
So in theory, worst case, I'd be looking at doing just a bit of mixing with the elevators?
Thanks for your help!
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From: Beaufort,
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Lesath.
On a flying wing, If you use the ailerons as flaps what are you actually doing? Remember the elevator? For all intent and purpose flying wings whether models or the real thing such as the YB-49 do not have flaps as is evident on fixed wing aircraft such as a 747, Piper, P-51 Mustang, Cessna. Following me so far? OK! Here's what flying wings like the YB-49, The stealth Bomber or YF-117 do have. It's called Crow. Or at least a version of it. Crow is when the flaps go down, in this case the elevators, and the ailerons go up. So they have Elevons and, Spoilerons. This is accomplished in two ways. One way is to have a top and bottom to each control surface that work together and independently. The top half can go up while the bottom half goes down to act as spoilers. If you take your hands and put them palms together now spread your fingers open while keeping the heel of your palms together. This is the effect you have. A V shape acting as both spoilerons and flaperons. Sort to speak. The open part of the v is the TE or trailing edge. This is one version of Crow. Another is when on conventional airplanes the ailerons go up while the flaps go down. This is mostly used on sailplanes to help in deceleration for landing and decent. Can also be used on high speed aircraft but very limited due to high stress. Extreme air braking.
Next time you watch an airliner land watch the ailerons you will see they will at some point, usually once the main gear has settled, will open up into a V shape. This is a version of Crow. They act as spoilers or airbrakes. If I confused you more I appologize. To make a long story short Flying wings have no flaps. They have spoilerons and elevons. Used as airbrakes.
I have to make up a word here Flaperator. Where the elevator can be used as a flap.
ISIS
On a flying wing, If you use the ailerons as flaps what are you actually doing? Remember the elevator? For all intent and purpose flying wings whether models or the real thing such as the YB-49 do not have flaps as is evident on fixed wing aircraft such as a 747, Piper, P-51 Mustang, Cessna. Following me so far? OK! Here's what flying wings like the YB-49, The stealth Bomber or YF-117 do have. It's called Crow. Or at least a version of it. Crow is when the flaps go down, in this case the elevators, and the ailerons go up. So they have Elevons and, Spoilerons. This is accomplished in two ways. One way is to have a top and bottom to each control surface that work together and independently. The top half can go up while the bottom half goes down to act as spoilers. If you take your hands and put them palms together now spread your fingers open while keeping the heel of your palms together. This is the effect you have. A V shape acting as both spoilerons and flaperons. Sort to speak. The open part of the v is the TE or trailing edge. This is one version of Crow. Another is when on conventional airplanes the ailerons go up while the flaps go down. This is mostly used on sailplanes to help in deceleration for landing and decent. Can also be used on high speed aircraft but very limited due to high stress. Extreme air braking.
Next time you watch an airliner land watch the ailerons you will see they will at some point, usually once the main gear has settled, will open up into a V shape. This is a version of Crow. They act as spoilers or airbrakes. If I confused you more I appologize. To make a long story short Flying wings have no flaps. They have spoilerons and elevons. Used as airbrakes.
I have to make up a word here Flaperator. Where the elevator can be used as a flap.
ISIS
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From: Black Canyon City, AZ
The plane I found that fits those specs is a Ultra Stick 60, loads of fun and easy to fly, big enough to see, flaps, ailerons, crow, pretty much whatever you want.
#19
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JW - you are spot on ... also the Black Horse stick is the same, its a copy of the US but a lot cheaper and does fly really nice.
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From: Grinnell ,
IA
The black Horse stick is smaller and lighter than the US 60, and cheaper too. I think I might try the cedar hobbies twin stick. Put the 2 Saito 56s I have on it. Then cut the ailerons so I end up with ailerons and flaps. I can use the same programing I have in my radio for my US 60 and US 120 Lite. This might be cool, a twin engine 40 sized stick with CROW. BTW If you have the programing power in your radio to do the aileron to flap mixing and crow feature. I think is nuts NOT to use it. It is just a blast to come straight down at the center of your field and at the last second round out and land in just a few feet. GOOD fun

Ron


Ron




