[Jsbsim-devel] Property and propulsion

[Jon B. <js...@ha...>]

The following properties are set or gotten in JSBSim.cxx - the interface
between FlightGear and JSBSim:
  /consumables/fuel/tank
  /environment/density-slugft3
  /environment/pressure-inhg
  /environment/temperature-degc
  /environment/turbulence/magnitude-norm
  /environment/turbulence/rate-hz
  /environment/wind-from-down-fps
  /environment/wind-from-east-fps
  /environment/wind-from-north-fps
  /fdm/trim/aileron
  /fdm/trim/pitch-trim
  /fdm/trim/rudder
  /fdm/trim/throttle
  /fdm/trim/trimmed
  /position/altitude-ft
  /position/latitude-deg
  /sim/alarms/stall-warning
  /sim/freeze/fuel
  /sim/presets/trim
  /surface-positions/elevator-pos-norm
  /surface-positions/flap-pos-norm
  /surface-positions/left-aileron-pos-norm
  /surface-positions/right-aileron-pos-norm
  /surface-positions/rudder-pos-norm
  /surface-positions/speedbrake-pos-norm
  /surface-positions/spoilers-pos-norm
  engines/engine
    EGT_degC
    N1
    N2
    augmentation
    cht-degf
    cranking
    cutoff
    egt-degf
    fuel-flow-gph
    fuel-flow_pph
    ignition
    inlet-pos-norm
    level-gal_us
    level-lb
    mp-osi
    nitrous
    nozzle-pos-norm
    oil-pressure-psi
    oil-temperature-degf
    reversed
    rpm
    running
    starter
    temperature_degC
    thrust_lb
    water-injection
  gear/gear
    wow
    has-brake
    tire-pressure-norm
    position-norm
    xoffset-in
    yoffset-in
    zoffset-in

Here are JSBSim properties:
  SD-norm
  accelerations/a-pilot-x-ft_sec2
  accelerations/a-pilot-y-ft_sec2
  accelerations/a-pilot-z-ft_sec2
  accelerations/n-pilot-x-norm
  accelerations/n-pilot-y-norm
  accelerations/n-pilot-z-norm
  accelerations/pdot-rad_sec
  accelerations/qdot-rad_sec
  accelerations/rdot-rad_sec
  accelerations/udot-fps
  accelerations/vdot-fps
  accelerations/wdot-fps
  aero/alpha-max-deg
  aero/alpha-min-deg
  aero/alpha-rad
  aero/alpha-wing-rad
  aero/alphadot-rad_sec
  aero/beta-rad
  aero/betadot-rad_sec
  aero/bi2vel
  aero/ci2vel
  aero/cl-squared-norm
  aero/h_b-cg-ft
  aero/h_b-mac-ft
  aero/mag-beta-rad
  aero/qbar-psf
  aero/qbarUV-psf
  aero/qbarUW-psf
  aero/stall-hyst-norm
  atmosphere/P-psf
  atmosphere/P-sl-psf
  atmosphere/T-R
  atmosphere/T-sl-R
  atmosphere/a-fps
  atmosphere/a-norm
  atmosphere/a-sl-fps
  atmosphere/crosswind-fps
  atmosphere/delta-norm
  atmosphere/headwind-fps
  atmosphere/p-turb-rad_sec
  atmosphere/psiw-rad
  atmosphere/q-turb-rad_sec
  atmosphere/r-turb-rad_sec
  atmosphere/rho-sl-slugs_ft3
  atmosphere/rho-slugs_ft3
  atmosphere/sigma-norm
  atmosphere/theta-norm
  attitude/heading-true-rad
  attitude/phi-rad
  attitude/pitch-rad
  attitude/psi-true-rad
  attitude/roll-rad
  attitude/theta-rad
  bias
  flight-path/gamma-rad
  flight-path/psi-gt-rad
  forces/fbx-aero-lbs
  forces/fbx-gear-lbs
  forces/fbx-inertial-lbs
  forces/fbx-prop-lbs
  forces/fbx-total-lbs
  forces/fby-aero-lbs
  forces/fby-gear-lbs
  forces/fby-inertial-lbs
  forces/fby-prop-lbs
  forces/fby-total-lbs
  forces/fbz-aero-lbs
  forces/fbz-gear-lbs
  forces/fbz-inertial-lbs
  forces/fbz-prop-lbs
  forces/fbz-total-lbs
  forces/fwx-aero-lbs
  forces/fwy-aero-lbs
  forces/fwz-aero-lbs
  forces/lod-norm
  gain
  gear/gear-cmd-norm
  gear/gear-pos-norm
  gear/num-units
  ic/alpha-deg
  ic/alpha-rad
  ic/beta-deg
  ic/beta-rad
  ic/gamma-deg
  ic/gamma-rad
  ic/h-agl-ft
  ic/h-sl-ft
  ic/lat-gc-deg
  ic/lat-gc-rad
  ic/long-gc-deg
  ic/long-gc-rad
  ic/mach-norm
  ic/phi-deg
  ic/phi-rad
  ic/psi-true-deg
  ic/psi-true-rad
  ic/roc-fpm
  ic/roc-fps
  ic/sea-level-radius-ft
  ic/terrain-altitude-ft
  ic/theta-deg
  ic/theta-rad
  ic/u-fps
  ic/v-fps
  ic/vc-kts
  ic/ve-kts
  ic/vg-fps
  ic/vg-kts
  ic/vt-fps
  ic/vt-kts
  ic/vw-bx-fps
  ic/vw-by-fps
  ic/vw-bz-fps
  ic/vw-dir-deg
  ic/vw-down-fps
  ic/vw-east-fps
  ic/vw-mag-fps
  ic/vw-north-fps
  ic/w-fps
  inertia/cg-x-ft
  inertia/cg-y-ft
  inertia/cg-z-ft
  inertia/ixx-lbsft2
  inertia/ixy-lbsft2
  inertia/ixz-lbsft2
  inertia/iyy-lbsft2
  inertia/izz-lbsft2
  inertia/mass-slugs
  inertia/weight-lbs
  metrics/Sh-sqft
  metrics/Sv-sqft
  metrics/Sw-sqft
  metrics/aero-rp-x-ft
  metrics/aero-rp-y-ft
  metrics/aero-rp-z-ft
  metrics/bw-ft
  metrics/cbarw-ft
  metrics/eyepoint-x-ft
  metrics/eyepoint-y-ft
  metrics/eyepoint-z-ft
  metrics/iw-deg
  metrics/lh-ft
  metrics/lh-norm
  metrics/lv-ft
  metrics/lv-norm
  metrics/runway-radius
  metrics/vbarh-norm
  metrics/vbarv-norm
  moments/l-aero-lbsft
  moments/l-gear-lbsft
  moments/l-prop-lbsft
  moments/l-total-lbsft
  moments/m-aero-lbsft
  moments/m-gear-lbsft
  moments/m-prop-lbsft
  moments/m-total-lbsft
  moments/n-aero-lbsft
  moments/n-gear-lbsft
  moments/n-prop-lbsft
  moments/n-total-lbsft
  position/epa-rad
  position/h-agl-ft
  position/h-sl-ft
  position/lat-dot-gc-rad
  position/lat-gc-rad
  position/long-dot-gc-rad
  position/long-gc-rad
  position/radius-to-vehicle-ft
  propulsion/active_engine
  propulsion/cutoff_cmd
  propulsion/magneto_cmd
  propulsion/n1
  propulsion/n2
  propulsion/num-engines
  propulsion/num-sel-fuel-tanks
  propulsion/num-sel-ox-tanks
  propulsion/num-tanks
  propulsion/starter_cmd
  propulsion/tanks-weight-lbs
  sim-time-sec
  systems/stall-warn-norm
  value-lbs
  velocities/h-dot-fps
  velocities/mach-norm
  velocities/p-aero-rad_sec
  velocities/p-rad_sec
  velocities/phidot-rad_sec
  velocities/psidot-rad_sec
  velocities/q-aero-rad_sec
  velocities/q-rad_sec
  velocities/r-aero-rad_sec
  velocities/r-rad_sec
  velocities/thetadot-rad_sec
  velocities/u-aero-fps
  velocities/u-fps
  velocities/v-aero-fps
  velocities/v-down-fps
  velocities/v-east-fps
  velocities/v-fps
  velocities/v-north-fps
  velocities/vc-fps
  velocities/vc-kts
  velocities/ve-fps
  velocities/ve-kts
  velocities/vg-fps
  velocities/vt-fps
  velocities/w-aero-fps
  velocities/w-fps

It occurs to me now that our JSBSim properties may be lacking in
definition - our engines ought to be placed in the property tree
differently:

the propulsion should be the top level tree, then below that the arrayed
things
propulsion/  engines/    engine  -or- engine[0]    engine[1]    ...below
each engine is the engine-specific stuff:    engine/      thruster/
thrust      N1      N2      ...... or something like that.

Jon