blade span

blade span

blade span
The length of a helicopter rotor blade from the tip to its root.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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In the present work, it is proposed to choose the regularization parameter equal to the chord of the blade; ideally, it should be equal to the local chord; however, this is not possible since the model and the computational tool consider it constant along the blade span. The influence of [member of] has been studied for an actuator disk [23] and for actuator line [4, 8] with special attention to the flow and wake dynamics.
Temperature Latin Symbols C: Chord [C.sub.a]: Axial chord [C.sub.p0]: Total pressure coefficient h: Blade span h: Local heat transfer coefficient [bar.h]: Averaged heat transfer coefficient k: Turbulent kinetic energy [[??].sub.l]: Leakage mass flow rate p: Pressure, pitch [p.sub.0]: Total pressure [p.sub.0i]: Mass-averaged total pressure at inlet [q".sub.w]: Wall heat flux r: Radial s: Squealer rim width t: Squealer rim height T: Temperature [T.sub.i]: Mass flow-averaged temperature at inlet [T.sub.w]: Wall temperature u: Velocity [U.sub.m]: AFTRF blade tip velocity at midspan V: Velocity component x: Axial distance [y.sup.+]: Dimensionless wall distance [DELTA][C.sub.p0]: Total pressure loss coefficient.
The specific design of the airfoils, associated chord lengths, and aero-twist angles along the blade span direction can be found.
A cycloidal rotor is a rotating wing device, capable of producing both rotorcraft lift and propulsion via the rotation of a number of blades about an axis that is parallel to the blade span. For standard configurations, the blades are rotating about a horizontal axis 90[degrees] to the normal flight direction.
as a percentage of blade span or chord) and the blade loading (local pressure difference between blade pressure and suction surfaces).
A shorter blade span is also recommended for a narrow room or area, with an ideal length being between 29” to 36.”
Wind turbine optimization starts with the selection of blade elements along the blade span. The more blade elements are used, the more accurate results are obtained from BEM analysis.
In other words, if the turbine has a 7-foot blade span, the tower base must be 70 feet from any existing habitable structure.
Based on the definition of input parameters of rotor operation, the aerodynamic design of propeller blade with the optimal distribution of buoyancy forces-circulation on the blade span can be realized.
Eventually it hopes to build eight turbines, each with a blade span of 410ft.
This freestanding electric fan, which is mounted on a vertical pole, has a bronze finish, ornamental base and five reversible dark antique wicker/palm leaf blades with a 52-inch blade span.