Path: ACPro/ACProAerodynamics
% BladeElement computes the inducted velocity
Assumes constant twist. v or omega can be length 1.
The thrust and torque coefficients are by the U.S. convention, i.e.
do not divide by solidity.
--------------------------------------------------------------------------
Form:
[vIT,q,cT,cQ,phi] = BladeElement(t,vC,omega,d)
--------------------------------------------------------------------------
------
Inputs
------
t (1,:) Thrust
vC (1,1) Velocity (m/s)
omega (1,1) Rotational rate (rad/s)
d (.) Data structure
.a (1,1) Lift curve slope
.rho (1,1) Density (kg/m^3)
.b (1,1) Number of blades
.c (1,1) Chord (m)
.R (1,1) Blade length (m)
.theta1 (1,1) Blade washout angle (rad/m)
.delta (1,1) Local blade section drag coefficient
-------
Outputs
-------
vI (1,:) Induced velocity at the tip
cT (1,:) Thrust coefficient
cQ (1,:) Torque coefficient
phi (:,:) Inflow angle (Columns are for each element of t and q)
s (1,1) Blade solidity
--------------------------------------------------------------------------
Reference: Bramwell, A.R.S. "Helicopter Dynamics," Edward Arnold, 1976.
pp. 90-96.
--------------------------------------------------------------------------
Common: CommonData/SwooshWatermark Common: General/CellToMat Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle
Back to the ACPro Module page