/* -*- indent-tabs-mode:T; c-basic-offset:8; tab-width:8; -*- vi: set ts=8: * $Id: Blade.h,v 2.0 2002/09/22 02:07:31 tramm Exp $ * * (c) Aaron Kahn * (c) Trammell Hudson * * This is the blade elment computations * ************* * *  This file is part of the autopilot simulation package. * *  Autopilot is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  Autopilot is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with Autopilot; if not, write to the Free Software *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * */#ifndef _BLADE_MODEL_H_#define _BLADE_MODEL_H_namespace sim {/* *  Structure for the blade element calculations */class Blade{public:	Blade() {}	~Blade() {}	void step();	// lift curve slope (*/rad)	double a;	// blade radius (ft)	double R;	// rotor angular velocity (rad/s)	double omega;	// number of rotor blades	double b;	// rotor blade chord (ft)	double c;	// blade root cutout (ft)	double R0;	// blade collective pitch @ 75% R (rad)	double collective;	// blade twist (- for washout rad)	double twst;	// profile drag cooeficent (nondimentional)	double Cd0;	// oswald efficency factor (nondimentional)	double e;	// perpendicular velocity to rotor disk (ft/s - in direction of T)	double Vperp;	// air density (slug/ft^3)	double rho;	// output thrust (lbs)	double T;	// output torque (lb-ft)	double Q;	// output power (lb-ft/s)	double P;	// output average induced velocity (ft/s)	double avg_v1;};}#endif