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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
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 horizontal.
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 ...
An advantage of quad rotors on small aircraft such as drones is the opportunity for mechanical simplicity. A quadcopter using electric motors and fixed-pitch rotors has only four moving parts. Pitch, yaw and roll can be controlled by changing the relative lift of different rotor pairs without changing total lift. [32] The two families of ...
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 ...
MORE: New Jersey, New York senators express 'urgent concern' over mystery drone activity. While lawmakers and citizens alike await answers, here's what to know about the purported drone sightings.
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 ...
The X-36 was built to 28% scale of a possible fighter aircraft and was controlled by a pilot in a ground-based virtual cockpit with a view provided by a video camera mounted in the canopy of the aircraft. For control, a canard forward of the wing was used as well as split ailerons and an advanced thrust vectoring nozzle for directional control.