# Tag Info

Accepted

### Why not use the yoke to control yaw, as well as pitch and roll?

The modern control yoke is directly derived from the "joystick" control that became standard on aircraft in the days when Glenn Curtiss personally ran the company that was the main competitor to the ...
• 17.1k

### Why not use the yoke to control yaw, as well as pitch and roll?

It's just a bad idea Sean. Believe me if you've done any flying you would NOT like a control column that you have to shove sideways, or a twisty yoke, for rudder as well as roll and pitch. Your feet ...
• 132k
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### What are the disadvantages of using just rudder to roll an airplane?

It works in a half-assed way but the key word is half-assed. You'll always be skidding around the sky since sideslip is required to obtain and maintain any rolling moment. Control response can be ...
• 132k
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### How does a tiltrotor yaw while in vertical flight?

The V22 Osprey yaws by tilting one rotor backwards from the vertical and one forward by moving the swashplate up on one side and down on the other causing a cyclic change to the rotor blade angles of ...
• 31.3k

### What are the exact meanings of roll, pitch and yaw?

The key thing missing in your interpretation is that the order is important. Applying the same roll, pitch and yaw angles in a different order will result in a different orientation (mathematically ...
• 56.1k
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### Why does directional stability decrease at supersonic speeds?

It is a combination of several effects: Aeroelasticity: With the higher forces at high speed, the structure deforms such that the effective flow angle at the tail surface is reduced. The supersonic ...
• 233k
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### What is the name for yaw, pitch and roll together?

Roll, pitch and yaw are referred to in one word as the attitude.
• 1,731
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### Is there a conventional notation or name for the slip angle?

Sideslip angle is commonly notated as β (see e.g. https://en.wikipedia.org/wiki/Slip_(aerodynamics)).
• 4,807
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### How much does the fuselage of an airplane contribute to yaw stabilization?

This is not a dumb question at all, and the short answer is not at all. Since the fuselage must be balanced around the center of gravity (cg), part of it will be forward of the cg. This part ...
• 233k
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### Why do some planes drift to the left in flight simulators?

The simulator behaves just like the real thing. Propeller powered aircraft with a prop that rotates clockwise will drift left during the takeoff roll if not corrected. This is caused by a left ...
• 74k

### Why not use the yoke to control yaw, as well as pitch and roll?

Such designs do not work well when the rudder is required other than during turns. A typical situation would be the use of rudder to counter the p-factor (asymmetric turning tendency) on propeller ...
• 581

### Why does this V-22's rotors rotate clockwise and anti-clockwise (the right and the left rotor respectively)?

A couple of things. One, I suspect the reason is similar to why the arrangement is also used on the P-38 Lightning airplane from World War II. The counterrotating engines on that airplane originally ...
• 74k
Accepted

### What are the exact meanings of roll, pitch and yaw?

What are the exact meanings of roll, pitch and yaw? It depends somewhat on whether you are speaking from a pilot's point of view or from an engineer's point of view. Your reference to yaw, pitch, ...
• 22.7k

### What costs less energy? Roll or Yaw?

When you turn by yawing you are skidding the airplane to point the nose to the side, to offset the trust vector to move the plane sideways as it's going forward. The rate of turn you can achieve this ...
• 132k
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### How is a sideslip maintained (aerodynamically)?

(Source) Here's a representative image of the variation in lift coefficient with respect to angle of attack. The same airfoil is considered in a "clean" configuration, with a deflected flap, and ...
• 3,671

### What are the exact meanings of roll, pitch and yaw?

Roll, pitch, and yaw have two different meanings. They can refer to either Euler angles, which describe the attitude (orientation) of an aircraft, or ways that an aircraft can rotate. Euler angles ...
• 5,781

### Is there a conventional notation or name for the slip angle?

There is only one other such angle. It is indeed the sideslip one, and its standard greek letter is $\beta$ (beta)
• 32.6k

### What are the disadvantages of using just rudder to roll an airplane?

Rudder only limits banking as described very well by John K, and might be a distorted view of increased safety by helping the pilot to not become disorientated. It may also be an attempt to not over ...
• 11.5k

### How does the rudder on the Rutan Long-EZ work?

It's a combination. There is a lateral yawing force that is a function of the offset between the rudder's lateral lift force when displaced, and the C of G, like any airplane. The moment arm is ...
• 132k
Accepted

### Why does increasing thrust on one engine make the plane roll and not yaw?

Increasing thrust on the right engine only will make the aircraft yaw and then roll to the left. The thrust does generate a yawing moment to the left, but the secondary effect of yaw is roll. In ...
• 14.5k

### What are the exact meanings of roll, pitch and yaw?

The attitude angles are explained in this wikipedia page, but it seems your confusion stems from the fact that they can present a singularity. Each set of unique Euler angles, outside of the gimbal ...

### What is the name for yaw, pitch and roll together?

Pitch, roll and yaw are rotation angles relative to the earth gravitational field. In order to fully describe the state of an unrestrained rigid body in space, there are six Degrees of Freedom ...
• 61.8k

### Why not use the yoke to control yaw, as well as pitch and roll?

Both of your designs would be impossible to use with one hand, which would make them impractical to use, since you need a free hand with which to manipulate other cockpit controls. The first design (...
• 5,781

### What costs less energy? Roll or Yaw?

A constant turn requires a constant centripetal force, i.e. perpendicular to the direction of motion. This force has to be generated aerodynamically (unless rocket engines are used). An ...
• 13.4k

### Is adverse yaw ever desirable?

Yes. For deliberate cross control situations, adverse yaw helps. This means during side slip or forward slip maneuvers, where adverse yaw means less rudder is required to keep the nose pointed in the ...
• 132k
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### How to control yaw in stick aircraft?

There are a few ways that yaw control is achieved. The easiest and the first to be successfully used would be to have cables from rudder pedals on each side of the rudder to deflect the control ...
• 12.7k

### How does a coaxial rotor helicopter achieve yaw?

When you increase the collective pitch of a rotor blade, it produces torque thus inducing a yaw in the opposite direction of the aircraft. By the same token, reducing the collective pitch reduces the ...
• 41
Accepted

### How does rudder size influence its ability to produce lateral lift?

The figure of 35% might be ideal for a rudder on GA aircraft with decent effectiveness and high enough control forces so a good control feel is achieved. Generally, a rudder on a vertical tail is ...
• 233k