blade tip
21blade span — The length of a helicopter rotor blade from the tip to its root …
22tip speed — The speed of a rotating airfoil, measured at its tip. It is generally subsonic except for the blade tips and the tips of the centrifugal compressors, which may be supersonic …
23tip weight — A weight placed on the tip of a helicopter rotor blade for spanwise balance …
24Tip Speed Ratio — In reference to a wind energy conversion device s blades, the difference between the rotational speed of the tip of the blade and the actual velocity of the wind …
25blade — Synonyms and related words: Beau Brummel, Excalibur, Skimobile, Sno Cat, alveolar ridge, alveolus, apex, arytenoid cartilages, ax, back, battler, bayonet, beau, belligerent, belted knight, bickerer, blood, boulevardier, bract, bracteole, bractlet …
26blade sweeping — An adjustment of the dynamic chordwise balance in which a tip of one of the blades of a helicopter rotor is moved backward or forward in its plane of rotation by changing the length of its drag brace …
27tip-path plane — The path described by the helicopter blade tips during their rotation. This is at right angles to the axis of the rotation. Normally, the shaft axis and the axis of rotation coincide. However, this may not always be the case since the rotor disc… …
28Active tip-clearance control — Active clearance control (ACC) is a method used in gas turbines to improve fuel efficiency. This is achieved by controlling the tip clearance. It is particularly effective on turbofans since they are required to respond quickly to changes of the… …
29open-tip turbine blade — A blade with no shroud attached to the tip. This blade can withstand a higher speed induced tip loading than the shrouded tip blade. Also called an open perimeter tip …
30retreating-blade stall — The stall of a helicopter rotor disc that occurs starting at the tip of the retreating blade. This happens when the helicopter forward speed is high. The individual angle of attack of the retreating blade becomes larger because the downward blade …
