any flying model will stall when the flying speed gets too low and the necessary amount of lift needed to hold the model in the air is lost. Getting to know your model's stalling speed by reducing throttle and applying up elevator at the same time is a very good idea, but don't practice too close to the ground if you want to avoid using the plastic bag.
When drag and gravity overcome the forces of lift and thrust on any aircraft, the aircraft will stall. Typically a stall occurs when the angle of attack becomes too steep. An aerodynamic stall has nothing to do with an engine quitting. Report this Word See also: Angle of Attack Added by: mkranitz
Purely an aerodynamic condition – nothing to do with engine operation. Occurs when lift-producing airflow over the wings is disrupted or lost because angle of wings to airflow (angle of attack) is too high. Most commonly occurs when a pilot doesn't maintain sufficient airspeed in a climb or turn. Student pilots are trained in stall prevention, recognition, and recovery.
Results when a wing exceeds its angle of attack (angle between airfoil and relative flow of wind), the airflow is disrupted, and the wing no longer produces lift, with sudden drop and possible loss of control.
The point at which the airflow breaks away from an aerofoil and lift is lost due to the change in the angle of the surface to the airflow. Can also happen to compressor blades of a gas turbine engine, causing loss of thrust.
The point at which wings fail to generate enough lift to keep the plane stable. This is kinda my definition, not necessarily the official one. When a wing is angled against the wind enough, it doesn't hold the plane in the air very well -- it is the angle that causes this, not the speed of the plane (remember road trips as a kid when you held your hand out the window and angled it like a wing? When your hand went near vertical, it didn't force your hand near to the top of the window anymore, your arm fell to the bottom -- it stalled.) Since these angles can accidently be exceeded during takeoffs and landings, different types of stalls are practiced to the point of reflex at decent altitides so that you can learn without damaging the airport's runway.
Aeroplanes stall in a completely different way to cars: the engine is irrelevant. A plane stalls when the wings meet the air at too high an angle. The air cannot follow the curved top surface and instead breaks away in eddies and vortices. As a result lift ceases to be sufficient to support the plane. Due to the physical properties of air, a stall can happen very suddenly. A loss of height is the inevitable result. To recover, the pilot just has to get the air flowing quickly over the wing again. This is easily done by diving for a short distance, which builds up speed. However if the aeroplane is within 100 feet of the ground there may not be enough room to recover. Sufficient airspeed must always be maintained to avoid a stall. Early pilots were very vulnerable to the stall because (a) they did not understand it, (b) they flew slowly and (c) they often stayed low as their aeroplanes had poor climbing ability.
What happens when the angle of attack is too great to generate lift regardless of airspeed. (Every airfoil has an angle of attack at which it generates maximum lift -- the airfoil will stall beyond this angle).
A condition of flight where a lifting surface, such as a wing, stops producing a useful amount of lift and the aircraft starts to fall. Stalls are always due to attempting to operate the flying surface (usually the wing) at too high an angle of attack. This, in turn, is always caused by overuse of the elevator control.
As the name indicates, it's stopping the kite on the spot in the window. Air is said to stall when it becomes detached from the surface it is flowing along. Usually air travels smoothly along both sides of the sail, but if the sail is not properly trimmed, the air can leave one of the sides of the sail and begin to stall.
A breakdown of the airflow over a wing, which suddenly reduces lift. When an airplane stalls it will usually drop suddenly. Pilots know how to recover from a stall and smooth out the airflow over the wings to produce more lift again.
The point at which lift is no longer generated by an aerofoil due to an extreme angle of attack coupled with low speed which in turn causes the airflow over the top of the aerofoil surface to degenerate into turbulence with consequent loss of lift.
1) To stop moving. 2) Air is said to stall when it becomes detached from the surface it is flowing along. Usually air travels smoothly along both sides of a sail, but if the sail is not properly trimmed, the air can leave one of the sides of the sail and begin to stall. Stalled sails are not operating efficiently.
A seat in the choir of a church, for one of the officiating clergy. It is inclosed, either wholly or partially, at the back and sides. The stalls are frequently very rich, with canopies and elaborate carving.
A Stall is a Flair move that involves stopping an object in movement and balancing it on a part of your body. This Flair move is rumored to have been created by old school British Flair Bartending Legend Leigh Miller. The first Stall was a bottle Stalled on the back of your hand. Today there are many different kinds of Stalls. Two of the most memorable Stalls in Flair History were Bill Longs two bottles over the shoulder (one over each) with double rotations and landing, or Stalling, both bottles one on the back of each hand at QUEST in 1997. More recently Rodrigo Delpech Stalled a bottle by dead tossing it behind his back and up onto his forehead at the World Bartender Championships in 2002.
A roller coaster is said to have stalled or valleyed if it is unable to complete the course because of energy loss. This can be caused by friction between the track and wheels, or in the wheel bearings. When a coaster stalls, it stops and reverses direction while approaching a high point in the track, then moves back and forth in an oscillating motion until it comes to rest at a low point of the track.
A stall is the slowing or stopping of a process. It is commonly applied to the phenomenon whereby an engine abruptly ceases operating and stops turning (perhaps due to fuel starvation or a mechanical failure), or in response to a sudden increase in engine load. This increase in engine load is common in a manual car when the clutch is released too suddenly.
In aircraft, when the airspeed gets so slow that it can no longer maintain flight attitude and begins to fall. In a square parachute, when the canopy is slowed down so much that it can no longer maintain flight, and it begins to rock forward and back radically.
A situation during DMUR operations when the applied WOB results in the Torque required to turn the bit is greater than the Torque supplied from the motor. A sharp CT circulating pressure rise will be seen upon this occurring.