129 lines
4.3 KiB
C++
129 lines
4.3 KiB
C++
// net_fdm.hxx -- defines a common net I/O interface to the flight
|
|
// dynamics model
|
|
//
|
|
// Written by Curtis Olson - http://www.flightgear.org/~curt
|
|
// Started September 2001.
|
|
//
|
|
// This file is in the Public Domain, and comes with no warranty.
|
|
//
|
|
// $Id$
|
|
|
|
|
|
#ifndef _NET_FDM_HXX
|
|
#define _NET_FDM_HXX
|
|
|
|
|
|
#include <time.h> // time_t
|
|
#include <simgear/misc/stdint.hxx>
|
|
|
|
// NOTE: this file defines an external interface structure. Due to
|
|
// variability between platforms and architectures, we only used fixed
|
|
// length types here. Specifically, integer types can vary in length.
|
|
// I am not aware of any platforms that don't use 4 bytes for float
|
|
// and 8 bytes for double.
|
|
|
|
const uint32_t FG_NET_FDM_VERSION = 25;
|
|
|
|
|
|
// Define a structure containing the top level flight dynamics model
|
|
// parameters
|
|
|
|
class FGNetFDM {
|
|
|
|
public:
|
|
|
|
enum {
|
|
FG_MAX_ENGINES = 4,
|
|
FG_MAX_WHEELS = 3,
|
|
FG_MAX_TANKS = 4
|
|
};
|
|
|
|
uint32_t version; // increment when data values change
|
|
uint32_t padding; // padding
|
|
|
|
// Positions
|
|
double longitude; // geodetic (radians)
|
|
double latitude; // geodetic (radians)
|
|
double altitude; // above sea level (meters)
|
|
float agl; // above ground level (meters)
|
|
float phi; // roll (radians)
|
|
float theta; // pitch (radians)
|
|
float psi; // yaw or true heading (radians)
|
|
float alpha; // angle of attack (radians)
|
|
float beta; // side slip angle (radians)
|
|
|
|
// Velocities
|
|
float phidot; // roll rate (radians/sec)
|
|
float thetadot; // pitch rate (radians/sec)
|
|
float psidot; // yaw rate (radians/sec)
|
|
float vcas; // calibrated airspeed
|
|
float climb_rate; // feet per second
|
|
float v_north; // north velocity in local/body frame, fps
|
|
float v_east; // east velocity in local/body frame, fps
|
|
float v_down; // down/vertical velocity in local/body frame, fps
|
|
float v_body_u; // ECEF velocity in body frame
|
|
float v_body_v; // ECEF velocity in body frame
|
|
float v_body_w; // ECEF velocity in body frame
|
|
|
|
// Accelerations
|
|
float A_X_pilot; // X accel in body frame ft/sec^2
|
|
float A_Y_pilot; // Y accel in body frame ft/sec^2
|
|
float A_Z_pilot; // Z accel in body frame ft/sec^2
|
|
|
|
// Stall
|
|
float stall_warning; // 0.0 - 1.0 indicating the amount of stall
|
|
float slip_deg; // slip ball deflection
|
|
|
|
// Pressure
|
|
|
|
// Engine status
|
|
uint32_t num_engines; // Number of valid engines
|
|
uint32_t eng_state[FG_MAX_ENGINES];// Engine state (off, cranking, running)
|
|
float rpm[FG_MAX_ENGINES]; // Engine RPM rev/min
|
|
float fuel_flow[FG_MAX_ENGINES]; // Fuel flow gallons/hr
|
|
float fuel_px[FG_MAX_ENGINES]; // Fuel pressure psi
|
|
float egt[FG_MAX_ENGINES]; // Exhuast gas temp deg F
|
|
float cht[FG_MAX_ENGINES]; // Cylinder head temp deg F
|
|
float mp_osi[FG_MAX_ENGINES]; // Manifold pressure
|
|
float tit[FG_MAX_ENGINES]; // Turbine Inlet Temperature
|
|
float oil_temp[FG_MAX_ENGINES]; // Oil temp deg F
|
|
float oil_px[FG_MAX_ENGINES]; // Oil pressure psi
|
|
|
|
// Consumables
|
|
uint32_t num_tanks; // Max number of fuel tanks
|
|
float fuel_quantity[FG_MAX_TANKS]; // used by GPSsmooth and possibly others
|
|
uint32_t tank_selected[FG_MAX_TANKS]; // selected, capacity, usable, density and level required for multiple-pc setups to work
|
|
double capacity_m3[FG_MAX_TANKS];
|
|
double unusable_m3[FG_MAX_TANKS];
|
|
double density_kgpm3[FG_MAX_TANKS];
|
|
double level_m3[FG_MAX_TANKS];
|
|
|
|
|
|
// Gear status
|
|
uint32_t num_wheels;
|
|
uint32_t wow[FG_MAX_WHEELS];
|
|
float gear_pos[FG_MAX_WHEELS];
|
|
float gear_steer[FG_MAX_WHEELS];
|
|
float gear_compression[FG_MAX_WHEELS];
|
|
|
|
// Environment
|
|
uint32_t cur_time; // current unix time
|
|
// FIXME: make this uint64_t before 2038
|
|
int32_t warp; // offset in seconds to unix time
|
|
float visibility; // visibility in meters (for env. effects)
|
|
|
|
// Control surface positions (normalized values)
|
|
float elevator;
|
|
float elevator_trim_tab;
|
|
float left_flap;
|
|
float right_flap;
|
|
float left_aileron;
|
|
float right_aileron;
|
|
float rudder;
|
|
float nose_wheel;
|
|
float speedbrake;
|
|
float spoilers;
|
|
};
|
|
|
|
|
|
#endif // _NET_FDM_HXX
|