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In generic terms, a stick pusher is known as a stall identification device or stall identification system. [73] A stick shaker is a mechanical device that shakes the pilot's controls to warn of the onset of stall. A stall warning is an electronic or mechanical device that sounds an audible warning as the stall speed is approached. The majority ...
The effect of airfoil geometry on dynamic stall is quite intricate. As is shown in the figure, for a cambered airfoil, the lift stall is delayed and the maximum nose-down pitch moment is significantly reduced. On the other hand, the inception of stall is more abrupt for a sharp leading-edge airfoil. [8] More information is available here. [13]
An example map with no operating lines is shown as a pictorial reference with the stall/surge line on the left and the steepening speed lines towards choke and overload on the right. Maps have similar features and general shape because they all apply to machines with spinning vanes which use similar principles for pumping a compressible fluid.
A stick shaker is a mechanical device designed to rapidly and noisily vibrate the control yoke (the "stick") of an aircraft, warning the flight crew that an imminent aerodynamic stall has been detected. It is typically present on the majority of large civil jet aircraft, as well as most large military planes.
For example, in the case in which two buildings at a location exist side by side with a gap, when a volume of wind blows around the ends of the buildings and through the gap, the sum of flow around each building and then its velocity increases as it travels through the gap, at the expense of pressure loss. As a result, there is a build up of ...
The pilot exceeded the “airplane’s critical angle of attack during final approach, which resulted in an aerodynamic stall and loss of control at an altitude too low to recover,” according to ...
The Cobra is an example of supermaneuvering [9] [10] as the aircraft's wings are well beyond the critical angle of attack for most of the maneuver. Additional aerodynamic surfaces known as "high-lift devices" including leading edge wing root extensions allow fighter aircraft much greater flyable 'true' alpha, up to over 45°, compared to about ...
The plane violently oscillated up and down and the "stick pusher” activated, the report said, meaning the onboard computer thought the plane was in danger of an aerodynamic stall.