Questions tagged [canard]

Smaller surfaces placed near the front of an airplane which provide lift and control forces

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Why are there no high wing Canard airplanes?

Just had a thought about canard airplanes while looking at the Tu-144 that features a canard surface on the top of its fuselage. Are there any high-wing aircraft with a top or bottom mounted canard? ...
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4 votes
1 answer
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Why were canards added to some variants of the Dassault Mirage III?

Mirage III offshoots like Kfir made by Israel Aircraft Industries: or Cheetah converted by South-African manufacturer Atlas Aviation: both have canards. The original Mirage III designed by French ...
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1 vote
0 answers
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How do boxwing and tandem airplanes balance moment

I want to build a hydrofoil like this picture: I discovered that you can pump it with a leg motion and moving the center of mass. Like this: I discovered xflr5 and ...
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3 votes
2 answers
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Why was building the Saab Viggen such an achievement of canard design?

In https://aviation.stackexchange.com/a/80365/20394, @GuyInchbald says "Nevertheless, getting the darn thing into production after 60 years of failure was a staggering achievement." What was ...
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1 vote
1 answer
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Identify odd aircraft near PWK 7/19/21

My workplace is under the pattern for Chicago Executive (PWK) and we sometimes get interesting/unusual things flying overhead. Yesterday I heard something that sounded very different from a "...
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1 vote
1 answer
220 views

Is there a better solution than the U-shaped tailplane for this Airbus concept?

Image source: airbus.com This U-Shaped tail is from a concept aircraft from Airbus, I was wondering if there is an alternative but just as good solution to the U-shaped tail. Using a canard in the ...
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What characteristic my canard needs to have when the canard also carries a pair of engine?

I am in 3rd year Aerospace Engineering and trying to do a preliminary design of an airplane. My design has a front wing that also has an engine at its root on both side of the fuselage. There is ...
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1 vote
2 answers
316 views

What makes wing strakes desirable?

Some planes have this large protruding part at the wing root. If my understanding is correct, it's a wing strake and it improves lift at high aoa via vortex induced lift on the rest of the wing. I ...
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3 answers
527 views

Why aren't 3-surface aircraft more popular in general aviation?

From everything I can gather, canards offer significant gains in performance characteristics, and most the drawbacks apply only if you remove the tail. Why not mix them together? What does Piaggio ...
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6 votes
1 answer
2k views

Why does the Eurofighter Typhoon have a long arm canard versus the close coupled canard of the Dassault's Rafale or the JAS-39 Gripen?

The Rafale and the Gripen are quite similar but the Eurofighter Typhoon has the canards far forward. I've been told that this was due to the shape of the air intake. Apparently the Typhoon's air ...
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2 votes
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What can be approach of balancing canard glider model?

There are a lot of instructions out there about balancing classic wing configuration glider models. The center of gravity should be approximately 25% to 30% from the front edge of the wing, which is ...
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3 votes
3 answers
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What are the disadvantages of a Tail providing lift? (tandem-wings included)

Most aircraft feature the tailplane configuration, which requires the main wing to provide higher lift than the weight of the plane itself, what seems counterproductive. Few aircraft have featured ...
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First Boeing 757-200 N757A 'Catfish' was modified with a Canard foreplane. How did it behave?

The aircraft had these changes made around 2006 to act as an F-22 Avionics test bed. One would expect that the fore plane changed many performances of machine, including take off and landing attitude ...
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4 votes
2 answers
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Why is a canard configuration more Structurally efficient for Rutan's Voyager?

Firstly, I’d like to kindly request not to mark this question as a duplicate of previous SE question without first reading this, because the approach is different and the previously given answers are ...
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15 votes
4 answers
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Why there so many pitch control surfaces on the Piaggio P180 Avanti?

Picture source. I have seen that there is kind of sonic aircraft like B-1B Lancer that used elevator and canard or fins at the same time for pitch control. That quite understandable because it is ...
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12 votes
1 answer
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Does the B-1B Lancer have controllable canards?

These three pictures shows the B-1B Lancer's canards and its elevators. I am not sure to call that feature a canard as the jet also has elevators. In my limited understanding, canard and elevator are ...
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10 votes
1 answer
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Why do some canard aircraft have dihedral on their canards?

For instance, Rutan's Solitaire and Steve Wright's Stagger-EZ. What are the benefits of having a dihedral on the canard? It seems like the canard dihedral increases yaw instability, and requires a ...
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5 votes
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What is the suggested position for a canard?

In a canard aircraft, what is the suggested position of the canard, with respect to the wing positioning? Considering the effect of down wash of the canard on the wing, what is the suggested position ...
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4 votes
2 answers
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Identify canard, low-wing, single pusher-prop plane over Upstate NY

Yesterday, August 11, at around 3:30 pm, I saw an unusual-looking plane flying over Ithaca, NY. It seemed fairly small -- approximately business jet sized. Unfortunately, I didn't have time to get a ...
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2 votes
1 answer
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Why didn’t the Concorde have flap-canards like the Tu-144?

One of only two ways of which I am aware in which the Tu-144 was “ahead” of the Concorde1 was in its use of retractable flap-canards, which increased the lift on the front of the aircraft at low ...
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5 votes
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Why aren’t there any lifting-canard airliners?

A lifting-canard aircraft, such as the Long-EZ, is an aircraft with the main wing at the back end of the fuselage and a pair of small, highly-loaded canards attached to the forward fuselage; the ...
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1 vote
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Is some sweep beneficial with taper?

I'm developing a canard glider which requires some taper for the canard to stall first. I understand that sweep is typically only for aircraft in a compressible airflow (M >= 0.3), but is there any ...
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4 votes
1 answer
338 views

Are canards useful for ultra low flying aircraft?

In this question about canards, they are described as being useful mostly/only for supersonic configurations which are unstable at regular? speeds. But for a low power, ground hugging aircraft, ...
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2 votes
1 answer
820 views

Does it make sense to use a canard in combination with a conventional aft elevator control surface?

I am designing a UAV and have settled on a canard design. However, I’m curious whether it would be helpful to have a typical horizontal stabilizer behind the wing as well as a canard wing in front of ...
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0 votes
2 answers
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Why does the Rutan Voyager use canards? [closed]

Can anyone point me to why Burt Rutan's Voyager is a canard? In other words, what reasoning could be behind it. What problems Burt Rutan might have tried to solve by using Canard configuration in ...
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1 vote
1 answer
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Why are "canard" not used on commercial aircraft? [duplicate]

As of today and as far as I know, there is no commercial aircraft with canard, while they are used on several military aircrafts (like Rafale, Typhoon). Plus, during take off the empennage pushing ...
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1 answer
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Why do we use the length of the canard as 1/3 of the wing?

Twisted canard is our project, so we are designing and analysing the model. We compare the twisted canard with an untwisted canard to find the best among them. The problem is we designed a canard of ...
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15 votes
2 answers
3k views

Why aren't the canards used as airbrakes on the Tupolev Tu-144?

The Tupolev TU-144 uses retractable canards to stabilize the aircraft while starting and landing. On this picture you can see them very well: Source: AirlineFan.com Copyright: VOLPATI It doesn't ...
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8 votes
3 answers
1k views

Is the Suntoucher CG too far aft?

I acknowledge my very limited understanding of flight mechanics, but at first sight something tells me that the CG of the Suntoucher solar aircraft concept lies too far before the main wing and the ...
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8 votes
1 answer
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How do canard flaps work?

Before examining this XB-70 picture I thought that all canard were one single flight control surface (as seen on many fighters such as the Eurofighter Typhoon), and that there functionning were ...
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5 votes
1 answer
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Who invented the canard wing?

Who invented the canard wing? I know that early planes like those built by Santos Dumont and the Voisin brothers used canard wings but who invented the canard wing? Update The plane built by Hiram ...
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0 votes
0 answers
195 views

How can the canard configuration increase the aircraft's maneuverability? [duplicate]

I know that in many of the fighter jets, there are canard configurations like in F16, SAAB Gripen etc and heard they increase the aircraft's maneuverability. Can anyone explains how a canard helps in ...
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10 votes
2 answers
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why are there no production canard GA aircraft?

You see a lot of experimental canard GA aircraft, and their performance characteristics seem great. Why don't we see any production canard designs? EDIT For clarification. I'm asking about small ...
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16 votes
4 answers
10k views

What is a canard?

While browsing this Stack Exchange, I regularly come across mentions of canards. I am not familiar with this term, and Google only gives information about ducks when I search for "canard". So, what is ...
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19 votes
3 answers
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Why is the Tu-144 the only commercial airplane with canard configuration?

I understand the delta wing was chosen because of the supersonic cruise (like the Concorde), and canards were added to reduce the approach/landing speed. But canards may be used without delta wing (e....
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22 votes
3 answers
6k views

Why is the use of tail-down force so common?

Why is the use of tail-down force so prevalent in aircraft design? Why not use canards to avoid induced drag?
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