1 // net_fdm.hxx -- defines a common net I/O interface to the flight
4 // Written by Curtis Olson, started September 2001.
6 // Copyright (C) 2001 Curtis L. Olson - curt@flightgear.com
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 # error This library requires C++
33 #include <time.h> // time_t
35 const int FG_NET_FDM_VERSION = 16;
38 // Define a structure containing the top level flight dynamics model
45 int version; // increment when data values change
46 int pad; // keep doubles 64-bit aligned for some
47 // hardware platforms, such as the Sun
48 // SPARC, which don't like misaligned
58 double longitude; // geodetic (radians)
59 double latitude; // geodetic (radians)
60 double altitude; // above sea level (meters)
61 float agl; // above ground level (meters)
62 float phi; // roll (radians)
63 float theta; // pitch (radians)
64 float psi; // yaw or true heading (radians)
65 float alpha; // angle of attack
66 float beta; // side slip angle
69 float phidot; // roll rate (radians/sec)
70 float thetadot; // pitch rate (radians/sec)
71 float psidot; // yaw rate (radians/sec)
72 float vcas; // calibrated airspeed
73 float climb_rate; // feet per second
74 float v_north; // north velocity in local/body frame, fps
75 float v_east; // east velocity in local/body frame, fps
76 float v_down; // down/vertical velocity in local/body frame, fps
77 float v_wind_body_north; // north velocity in local/body frame
78 // relative to local airmass, fps
79 float v_wind_body_east; // east velocity in local/body frame
80 // relative to local airmass, fps
81 float v_wind_body_down; // down/vertical velocity in local/body
82 // frame relative to local airmass, fps
85 float A_X_pilot; // X accel in body frame ft/sec^2
86 float A_Y_pilot; // Y accel in body frame ft/sec^2
87 float A_Z_pilot; // Z accel in body frame ft/sec^2
90 float stall_warning; // 0.0 - 1.0 indicating the amount of stall
91 float slip_deg; // slip ball deflection
96 int num_engines; // Number of valid engines
97 int eng_state[FG_MAX_ENGINES]; // Engine state (off, cranking, running)
98 float rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
99 float fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
100 float EGT[FG_MAX_ENGINES]; // Exhuast gas temp deg F
101 float oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
102 float oil_px[FG_MAX_ENGINES]; // Oil pressure psi
105 int num_tanks; // Max number of fuel tanks
106 float fuel_quantity[FG_MAX_TANKS];
110 bool wow[FG_MAX_WHEELS];
111 float gear_pos[FG_MAX_WHEELS];
112 float gear_steer[FG_MAX_WHEELS];
113 float gear_compression[FG_MAX_WHEELS];
116 time_t cur_time; // current unix time
117 long int warp; // offset in seconds to unix time
118 float visibility; // visibility in meters (for env. effects)
120 // Control surface positions (normalized values)
132 #endif // _NET_FDM_HXX