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In a linear system, "flutter point" is the point at which the structure is undergoing simple harmonic motion—zero net damping—and so any further decrease in net damping will result in a self-oscillation and eventual failure. "Net damping" can be understood as the sum of the structure's natural positive damping and the negative damping of ...
For the case of flutter analysis, lift history for the motion obtained from the Wagner analysis (Herbert A. Wagner) with varying frequency of oscillation shows that magnitude of lift decreases and a phase lag develops between the aircraft motion and the unsteady aerodynamic forces. Reduced frequency can be used to explain the amplitude ...
Mass balance protruding from an aileron used to suppress flutter. A control horn is a section of control surface which projects ahead of the pivot point. It generates a force which tends to increase the surface's deflection thus reducing the control pressure experienced by the pilot.
This definition of a cluster or accumulation point of a sequence generalizes to nets and filters. The similarly named notion of a limit point of a sequence [1] (respectively, a limit point of a filter, [2] a limit point of a net) by definition refers to a point that the sequence converges to (respectively, the filter converges to, the net ...
A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...
Image credits: viralsumo1 #6. 1. Gentle Admittedly men are quite strong and can sometimes come off as a bull in a China shop. When a man is considerate and gentle, it genuinely makes my heart melt.
Aeroelastic flutter, a rapid self-feeding motion, potentially destructive, that is excited by aerodynamic forces in aircraft and bridges; Flutter (American company), a gesture recognition technology company acquired by Google in 2013; Flutter (electronics and communication), any rapid variation of signal parameters
Meghan Markle's refreshed lifestyle brand has a logo with a meaningful symbol.. On Feb. 18, the Duchess of Sussex announced that she was rebranding her lifestyle venture previously known as ...