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properties.md

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JSBSim Properties

Initial Conditions

  • ic/vc-kts (read/write) Calibrated airspeed initial condition in knots
  • ic/ve-kts (read/write) Knots equivalent airspeed initial condition
  • ic/vg-kts (read/write) Ground speed initial condition in knots
  • ic/vt-kts (read/write) True airspeed initial condition in knots
  • ic/mach (read/write) Mach initial condition
  • ic/roc-fpm (read/write) Rate of climb initial condition in feet/minute
  • ic/gamma-deg (read/write) Flightpath angle initial condition in degrees
  • ic/alpha-deg (read/write) Angle of attack initial condition in degrees
  • ic/beta-deg (read/write) Angle of sideslip initial condition in degrees
  • ic/theta-deg (read/write) Pitch angle initial condition in degrees
  • ic/phi-deg (read/write) Roll angle initial condition in degrees
  • ic/psi-true-deg (read/write) Heading angle initial condition in degrees
  • ic/lat-gc-deg (read/write) Latitude initial condition in degrees
  • ic/long-gc-deg (read/write) Longitude initial condition in degrees
  • ic/h-sl-ft (read/write) Height above sea level initial condition in feet
  • ic/h-agl-ft (read/write) Height above ground level initial condition in feet
  • ic/sea-level-radius-ft (read/write) Radius of planet at sea level in feet
  • ic/terrain-elevation-ft (read/write) Terrain elevation above sea level in feet
  • ic/vg-fps (read/write) Ground speed initial condition in feet/second
  • ic/vt-fps (read/write) True airspeed initial condition in feet/second
  • ic/vw-bx-fps (read/write) Wind velocity initial condition in Body X frame in feet/second
  • ic/vw-by-fps (read/write) Wind velocity initial condition in Body Y frame in feet/second
  • ic/vw-bz-fps (read/write) Wind velocity initial condition in Body Z frame in feet/second
  • ic/vw-north-fps (read/write) Wind northward velocity initial condition in feet/second
  • ic/vw-east-fps (read/write) Wind eastward velocity initial condition in feet/second
  • ic/vw-down-fps (read/write) Wind downward velocity initial condition in feet/second
  • ic/vw-mag-fps (read/write) Wind velocity magnitude initial condition in feet/sec.
  • ic/vw-dir-deg (read/write) Wind direction initial condition, in degrees from north
  • ic/roc-fps (read/write) Rate of climb initial condition, in feet/second
  • ic/u-fps (read/write) Body frame x-axis velocity initial condition in feet/second
  • ic/v-fps (read/write) Body frame y-axis velocity initial condition in feet/second
  • ic/w-fps (read/write) Body frame z-axis velocity initial condition in feet/second
  • ic/vn-fps (read/write) Local frame x-axis (north) velocity initial condition in feet/second
  • ic/ve-fps (read/write) Local frame y-axis (east) velocity initial condition in feet/second
  • ic/vd-fps (read/write) Local frame z-axis (down) velocity initial condition in feet/second
  • ic/gamma-rad (read/write) Flight path angle initial condition in radians
  • ic/alpha-rad (read/write) Angle of attack initial condition in radians
  • ic/theta-rad (read/write) Pitch angle initial condition in radians
  • ic/beta-rad (read/write) Angle of sideslip initial condition in radians
  • ic/phi-rad (read/write) Roll angle initial condition in radians
  • ic/psi-true-rad (read/write) Heading angle initial condition in radians
  • ic/lat-gc-rad (read/write) Geocentric latitude initial condition in radians
  • ic/long-gc-rad (read/write) Longitude initial condition in radians
  • ic/p-rad_sec (read/write) Roll rate initial condition in radians/second
  • ic/q-rad_sec (read/write) Pitch rate initial condition in radians/second
  • ic/r-rad_sec (read/write) Yaw rate initial condition in radians/second

Acclerations

  • accelerations/pdot-rad_sec2 rad/s^2
  • accelerations/qdot-rad_sec2 rad/s^2
  • accelerations/rdot-rad_sec2 rad/s^2
  • accelerations/udot-ft_sec2 rad/s^2
  • accelerations/vdot-ft_sec2 rad/s^2
  • accelerations/wdot-ft_sec2 rad/s^2
  • accelerations/gravity-ft_sec2 rad/s^2
  • accelerations/a-pilot-x-ft_sec2 rad/s^2
  • accelerations/a-pilot-y-ft_sec2 rad/s^2
  • accelerations/a-pilot-z-ft_sec2 rad/s^2
  • accelerations/n-pilot-x-norm
  • accelerations/n-pilot-y-norm
  • accelerations/n-pilot-z-norm
  • accelerations/Nz
  • accelerations/Ny

Attitude

  • attitude/pitch-rad rad Pitch
  • attitude/roll-rad rad Roll
  • attitude/heading-true-rad rad True heading

Flight Control Surfaces

  • fcs/aileron-cmd-norm - Aileron command(normalized)

  • fcs/elevator-cmd-norm - Elevator command(normalized)

  • fcs/rudder-cmd-norm - Rudder command(normalized)

  • fcs/flap-cmd-norm - Flap command(normalized)

  • fcs/speedbrake-cmd-norm - Speedbrake command(normalized)

  • fcs/spoiler-cmd-norm - Spoiler command(normalized)

  • fcs/pitch-trim-cmd-norm - Pitch trim command(normalized)

  • fcs/roll-trim-cmd-norm - Roll trim command(normalized)

  • fcs/yaw-trim-cmd-norm - Yaw trim command(normalized)

  • fcs/left-aileron-pos-rad rad Left aileron position

  • fcs/left-aileron-pos-deg deg Left aileron position

  • fcs/left-aileron-pos-norm - Left aileron position(normalized)

  • fcs/mag-left-aileron-pos-rad rad Mag. left aileron position

  • fcs/right-aileron-pos-rad rad Right aileron position

  • fcs/right-aileron-pos-deg deg Right aileron position

  • fcs/right-aileron-pos-norm - Right aileron position(normalized)

  • fcs/mag-right-aileron-pos-rad rad Mag. right aileron position

  • fcs/elevator-pos-rad rad Elevator position

  • fcs/elevator-pos-deg deg Elevator position

  • fcs/elevator-pos-norm - Elevator position(normalized)

  • fcs/mag-elevator-pos-rad rad Mag. elevator position

  • fcs/rudder-pos-rad rad Rudder position

  • fcs/rudder-pos-deg deg Rudder position

  • fcs/rudder-pos-norm - Rudder position(normalized)

  • fcs/mag-rudder-pos-rad rad Mag. rudder position

  • fcs/flap-pos-rad rad Flap position

  • fcs/flap-pos-deg deg Flap position

  • fcs/flap-pos-norm - Flap position(normalized)

  • fcs/speedbrake-pos-rad rad Speedbrake position

  • fcs/speedbrake-pos-deg deg Speedbrake position

  • fcs/speedbrake-pos-norm - Speedbrake position(normalized)

  • fcs/mag-speedbrake-pos-rad rad Mag. speedbrake position

  • fcs/spoiler-pos-rad rad Spoiler position

  • fcs/spoiler-pos-deg deg Spoiler position

  • fcs/spoiler-pos-norm - Spoiler position(normalized)

  • fcs/mag-spoiler-pos-rad rad Mag. spoiler position

  • gear/gear-pos-norm - Gear position(normalized)

  • gear/gear-cmd-norm - Gear command(normalized)

  • fcs/left-brake-cmd-norm - Left brake command(normalized)

  • fcs/right-brake-cmd-norm - Right brake command(normalized)

  • fcs/center-brake-cmd-norm - Center brake command(normalized)

  • fcs/steer-cmd-norm - Steer command(normalized)

gear/tailhook-pos-norm - Tailhook position(normalized)

  • fcs/wing-fold-pos-norm - Wing fold position(normalized)

  • fcs/throttle-cmd-norm - Throttle command(normalized)

  • fcs/throttle-pos-norm - Throttle position(normalized)

  • fcs/mixture-cmd-norm - Mixture command(normalized)

  • fcs/mixture-pos-norm - Mixture position(normalized)

  • fcs/advance-cmd-norm - Advance command(normalized)

  • fcs/advance-pos-norm - Advance position(normalized)

  • fcs/feather-cmd-norm - Feather command(normalized)

  • fcs/feather-pos-norm - Feather position(normalized)

Position

  • position/h-sl-ft ft Altitude above sea level
  • position/h-sl-meters m Altitude above sea level
  • position/lat-gc-rad rad
  • position/long-gc-rad rad
  • position/lat-gc-deg deg
  • position/long-gc-deg deg
  • position/lat-geod-rad rad
  • position/lat-geod-deg deg
  • position/geod-alt-ft ft
  • position/h-agl-ft ft Altitude above ground level
  • position/geod-alt-km km
  • position/h-agl-km km
  • position/radius-to-vehicle-ft ft
  • position/terrain-elevation-asl-ft ft
  • position/eci-x-ft ft
  • position/eci-y-ft ft
  • position/eci-z-ft ft
  • position/ecef-x-ft ft
  • position/ecef-y-ft ft
  • position/ecef-z-ft ft
  • position/epa-rad rad
  • position/distance-from-start-lon-mt mt
  • position/distance-from-start-lat-mt mt
  • position/distance-from-start-mag-mt mt
  • position/vrp-gc-latitude_deg deg
  • position/vrp-longitude_deg deg
  • position/vrp-radius-ft ft

Propulsion

  • /engine[0] - First engine. Replace [0] with your engine number.
  • /tank[0] - First fuel tank. Replace [0] with your fuel tank number.

Shared

  • propulsion/set-running - Init. running
  • propulsion/starter_cmd - Starter command
  • propulsion/active_engine - Get active engine
  • propulsion/total-fuel-lbs lbs Total amount of fuel
  • propulsion/refuel - Refuel
  • propulsion/fuel_dump - Fuel dump
  • forces/fbx-prop-lbs lbs
  • forces/fby-prop-lbs lbs
  • forces/fbz-prop-lbs lbs
  • moments/l-prop-lbsft lbs-ft
  • moments/m-prop-lbsft lbs-ft
  • moments/n-prop-lbsft lbs-ft
  • propulsion/engine[0]/thrust-lbs lbs Thrust for selected engine
  • propulsion/tank[0]/contents-lbs lbs Fuel content in selected tank
  • propulsion/tat-r ºR Total temperature, isentropic flow
  • propulsion/tat-c ºC Total temperature, isentropic flow
  • propulsion/pt-lbs_sqft sqft Total pressure

Piston engine specific

  • propulsion/magneto_cmd - Magnetos command
  • propulsion/engine[0]/power-hp HP Engine power
  • propulsion/engine[0]/friction-hp HP Static friction
  • propulsion/engine[0]/bsfc-lbs_hphr - ISFC
  • propulsion/engine[0]/starter-norm - Starter gain
  • propulsion/engine[0]/volumetric-efficiency - Volumetric efficiency
  • propulsion/engine[0]/map-pa pa Manifold absolute pressure
  • propulsion/engine[0]/map-inhg inHg Manifold absolute pressure
  • propulsion/engine[0]/air-intake-impedance-factor - Z airbox
  • propulsion/engine[0]/ram-air-factor - Ram air factor
  • propulsion/engine[0]/cooling-factor - Cooling factor
  • propulsion/engine[0]/boost-speed - Boost speed
  • propulsion/engine[0]/cht-degF ºF Cylinder head temperature
  • propulsion/engine[0]/oil-temperature-degF ºF Oil temperature
  • propulsion/engine[0]/oil-pressure-psi psi Oil pressure
  • propulsion/engine[0]/egt-degF ºF Exhaust gas temperature

Propeller specific

  • propulsion/engine[0]/engine-rpm RPM Get engine RPM
  • propulsion/engine[0]/advance-ratio J Advance ratio
  • propulsion/engine[0]/blade-angle - Blade angle
  • propulsion/engine[0]/thrust-coefficient - Get thrust coefficient
  • propulsion/engine[0]/propeller-rpm RPM Get propeller RPM
  • propulsion/engine[0]/helical-tip-Mach - Get helical tip Mach
  • propulsion/engine[0]/constant-speed-mode - Get constant speed
  • propulsion/engine[0]/prop-induced-velocity_fps fps Get induced velocity

Turbine & Turboprop engine specific

  • propulsion/cutoff_cmd - Cutoff command
  • propulsion/engine[0]/n1 - Nozzle 1
  • propulsion/engine[0]/n2 - Nozzle 2

Velocities

  • velocities/h-dot-fps fps
  • velocities/v-north-fps fps
  • velocities/v-east-fps fps
  • velocities/v-down-fps fps Vertical speed
  • velocities/u-fps fps
  • velocities/v-fps fps
  • velocities/w-fps fps
  • velocities/u-aero-fps fps
  • velocities/v-aero-fps fps
  • velocities/w-aero-fps fps
  • velocities/p-rad_sec rad/s Roll speed
  • velocities/q-rad_sec rad/s Pitch speed
  • velocities/r-rad_sec rad/s Yaw speed
  • velocities/p-aero-rad_sec rad/s
  • velocities/q-aero-rad_sec rad/s
  • velocities/r-aero-rad_sec rad/s
  • velocities/pi-rad_sec rad/s
  • velocities/qi-rad_sec rad/s
  • velocities/ri-rad_sec rad/s
  • velocities/eci-x-fps fps
  • velocities/eci-y-fps fps
  • velocities/eci-z-fps fps
  • velocities/eci-velocity-mag-fps fps
  • velocities/ned-velocity-mag-fps fps
  • velocities/vc-fps fps Airspeed
  • velocities/vc-kts kts Airspeed
  • velocities/ve-fps fps
  • velocities/ve-kts kts
  • velocities/vtrue-fps fps
  • velocities/vtrue-kts kts
  • velocities/machU
  • velocities/phidot-rad_sec rad/s
  • velocities/thetadot-rad_sec rad/s
  • velocities/psidot-rad_sec rad/s
  • velocities/vt-fps fps
  • velocities/mach
  • velocities/vg-fps fps
  • velocities/vg-fps fps

Atmosphere

  • atmosphere/T-R The current modeled temperature in degrees Rankine.
  • atmosphere/rho-slugs_ft3
  • atmosphere/P-psf
  • atmosphere/a-fps
  • atmosphere/T-sl-R
  • atmosphere/rho-sl-slugs_ft3
  • atmosphere/P-sl-psf
  • atmosphere/a-sl-fps
  • atmosphere/theta
  • atmosphere/sigma
  • atmosphere/delta
  • atmosphere/a-ratio