6 // A generic propeller model. See the TeX documentation for
7 // implementation details, this is too hairy to explain in code
12 // Initializes a propeller with the specified "cruise" numbers
13 // for airspeed, RPM, power and air density, and two "takeoff"
14 // numbers for RPM and power (with air speed and density being
15 // zero and sea level). RPM values are in radians per second, of
17 Propeller(float radius, float v, float omega, float rho, float power);
19 void setStops (float fine_stop, float coarse_stop);
21 void setTakeoff(float omega0, float power0);
23 void modPitch(float mod);
25 void setPropPitch(float proppitch);
27 void setPropFeather(int state);
29 void setManualPitch();
31 void calc(float density, float v, float omega,
32 float* thrustOut, float* torqueOut);
35 float _r; // characteristic radius
36 float _j0; // zero-thrust advance ratio
37 float _baseJ0; // ... uncorrected for prop advance
38 float _f0; // thrust coefficient
39 float _etaC; // Peak efficiency
40 float _lambdaPeak; // constant, ~0.759835;
41 float _beta; // constant, ~1.48058;
42 float _tc0; // thrust "coefficient" at takeoff
43 float _fine_stop; // ratio for minimum pitch (high RPM)
44 float _coarse_stop; // ratio for maximum pitch (low RPM)
45 bool _matchTakeoff; // Does _tc0 mean anything?
46 bool _manual; // manual pitch mode
47 float _proppitch; // prop pitch control setting (0 ~ 1.0)
48 float _propfeather; // prop feather control setting (0 = norm, 1 = feather)
52 #endif // _PROPELLER_HPP