blade root

The portion of the propeller blade that fits into the hub. Also called a blade hub.

Aviation dictionary. 2014.

Look at other dictionaries:

  • Blade — (bl[=a]d), n. [OE. blade, blad, AS. bl[ae]d leaf; akin to OS., D., Dan., & Sw. blad, Icel. bla[eth], OHG. blat, G. blatt, and perh. to L. folium, Gr. fy llon. The root is prob. the same as that of AS. bl[=o]wan, E. blow, to blossom. See {Blow} to …   The Collaborative International Dictionary of English

  • blade twist — i. The undesirable variation in pitch from root to tip caused by aerodynamic loading. ii. The twist built into a propeller or rotor blade. In the case of a propeller, it is to ensure that the pitch angle at the root is greater than the tip. In… …   Aviation dictionary

  • blade angle — noun : the angle between the chord of a propeller or rotor blade and a plane normal to the axis of rotation, its value varying along the span and decreasing from root to tip because of blade twist * * * blade angle, the acute angle between the… …   Useful english dictionary

  • blade butt — The root end of a propeller blade that fits into the hub …   Aviation dictionary

  • blade span — The length of a helicopter rotor blade from the tip to its root …   Aviation dictionary

  • root depth —   n.    the dimension from the bottom of a cut on a key to the bottom of the blade …   Locksmith dictionary

  • firtree root — The usual gas turbine rotor blade root of tapered form, with broached serrated edges providing multiple load bearing faces …   Aviation dictionary

  • extended-root blade — i. A propeller blade with the root extended in a chord. ii. A gas turbine rotor blade in which the airfoil is carried on a long platform in a disc of reduced diameter …   Aviation dictionary

  • Below the Root (video game) — Infobox VG title = Below the Root developer = Windham Classics publisher = Windham Classics designer = engine = released = 1984 genre = Adventure modes = Single player ratings = platforms = IBM PC (DOS), Commodore 64, Apple II media =… …   Wikipedia

  • propeller blade stations — The designation of location of various points on a propeller blade. It is normally numbered from 1 onward or as the number of inches from the root of the blade toward its tip. Propeller blade stations …   Aviation dictionary

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