1 // net_fdm.hxx -- defines a common net I/O interface to the flight
4 // Written by Curtis Olson - curt@flightgear.com, started September 2001.
6 // This file is in the Public Domain, and comes with no warranty.
16 # error This library requires C++
19 #include <time.h> // time_t
21 const int FG_NET_FDM_VERSION = 19;
24 // Define a structure containing the top level flight dynamics model
31 int version; // increment when data values change
32 int pad; // keep doubles 64-bit aligned for some
33 // hardware platforms, such as the Sun
34 // SPARC, which don't like misaligned
44 double longitude; // geodetic (radians)
45 double latitude; // geodetic (radians)
46 double altitude; // above sea level (meters)
47 float agl; // above ground level (meters)
48 float phi; // roll (radians)
49 float theta; // pitch (radians)
50 float psi; // yaw or true heading (radians)
51 float alpha; // angle of attack (radians)
52 float beta; // side slip angle (radians)
55 float phidot; // roll rate (radians/sec)
56 float thetadot; // pitch rate (radians/sec)
57 float psidot; // yaw rate (radians/sec)
58 float vcas; // calibrated airspeed
59 float climb_rate; // feet per second
60 float v_north; // north velocity in local/body frame, fps
61 float v_east; // east velocity in local/body frame, fps
62 float v_down; // down/vertical velocity in local/body frame, fps
63 float v_wind_body_north; // north velocity in local/body frame
64 // relative to local airmass, fps
65 float v_wind_body_east; // east velocity in local/body frame
66 // relative to local airmass, fps
67 float v_wind_body_down; // down/vertical velocity in local/body
68 // frame relative to local airmass, fps
71 float A_X_pilot; // X accel in body frame ft/sec^2
72 float A_Y_pilot; // Y accel in body frame ft/sec^2
73 float A_Z_pilot; // Z accel in body frame ft/sec^2
76 float stall_warning; // 0.0 - 1.0 indicating the amount of stall
77 float slip_deg; // slip ball deflection
82 int num_engines; // Number of valid engines
83 int eng_state[FG_MAX_ENGINES]; // Engine state (off, cranking, running)
84 float rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
85 float fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
86 float egt[FG_MAX_ENGINES]; // Exhuast gas temp deg F
87 float mp_osi[FG_MAX_ENGINES]; // Manifold pressure
88 float oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
89 float oil_px[FG_MAX_ENGINES]; // Oil pressure psi
92 int num_tanks; // Max number of fuel tanks
93 float fuel_quantity[FG_MAX_TANKS];
97 bool wow[FG_MAX_WHEELS];
98 float gear_pos[FG_MAX_WHEELS];
99 float gear_steer[FG_MAX_WHEELS];
100 float gear_compression[FG_MAX_WHEELS];
103 time_t cur_time; // current unix time
104 long int warp; // offset in seconds to unix time
105 float visibility; // visibility in meters (for env. effects)
107 // Control surface positions (normalized values)
109 float elevator_trim_tab;
121 #endif // _NET_FDM_HXX