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Unlike conventional helicopters, quadcopters do not usually have cyclic pitch control, in which the angle of the blades varies dynamically as they turn around the rotor hub. In the early days of flight, quadcopters (then referred to either as quadrotors or simply as helicopters ) were seen as a possible solution to some of the persistent ...
He thus suggests that birds do not utilise vertical stabilisers, since they do not need to counteract adverse yaw caused by lift-induced drag. [1] Washout is also found in gliders [2] and hang gliders. [3] In helicopters, blade twist is used to reduce lift towards the blade tip, thus reducing unequal rotor lift distribution. [4]: 2–9
The damping term is dominated by the product of the roll damping and the yaw damping derivatives, these are both negative, so their product is positive. The Dutch roll should therefore be damped. The motion is accompanied by slight lateral motion of the center of gravity and a more "exact" analysis will introduce terms in Y β {\displaystyle Y ...
Coaxial rotors solve the problem of main rotor torque by turning each set of rotors in opposite directions. The opposite torques from the rotors cancel each other out. Rotational maneuvering, yaw control, is accomplished by increasing the collective pitch of one rotor and decreasing the collective pitch on the other. This causes a controlled ...
A yaw rotation is a movement around the yaw axis of a rigid body that changes the direction it is pointing, to the left or right of its direction of motion. The yaw rate or yaw velocity of a car, aircraft, projectile or other rigid body is the angular velocity of this rotation, or rate of change of the heading angle when the aircraft is ...
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The UK Utterly Butterly display team perform an aerobatic maneuver with their Boeing Stearmans, at an air display in England. Aerobatic maneuvers are flight paths putting aircraft in unusual attitudes, in air shows, dogfights or competition aerobatics. Aerobatics can be performed by a single aircraft or in formation with several others. Nearly ...
Flames could be seen where a military helicopter made an emergency landing at Camp Pendleton on Friday, causing police to warn drivers of potential traffic delays along Interstate 5. All four crew ...