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List:       flightgear-cvs
Subject:    [Flightgear-cvslogs]
From:       Erik Hofman <ehofman () flightgear ! org>
Date:       2004-07-26 9:51:29
Message-ID: E1Bp28n-0002nC-00 () baron ! me ! umn ! edu
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Update of /var/cvs/FlightGear-0.9/data/Aircraft/747/Engines
In directory baron:/tmp/cvs-serv10725/Engines

Added Files:
	JT9D-3.xml direct.xml 
Log Message:
Add Darren Jones very accurate 747-100 KSBSim model.

--- NEW FILE ---
<?xml version="1.0"?>
<!-- 	
  *****************************************************
  Pratt & Whitney JT9D-3 
  Modified from CFM56 engine model
  Author: Darren Jones
  *****************************************************
-->

<FG_TURBINE NAME="JT9D-3">
  <!--
     MILTHRUST     max static thrust (without afterburner) at S.L. (installed), lbf
     MAXTHRUST     max static thrust with afterburner at S.L. (installed), lbf
     BYPASSRATIO   bypass ratio
     TSFC          thrust-specific fuel consumption (lbm/hr/lbf)
     ATSFC         augmented TSFC (lbm/hr/lbf)
     IDLEN1        idle percent rpm of fan spool
     IDLEN2        idle percent rpm of inner spool
     MAXN1         N1 at 100% throttle
     MAXN2         N2 at 100% throttle
     AUGMENTED     =1 if augmentation installed, else =0
     INJECTED      =1 if water injection installed, else =0  

     TABLE(0)      idle thrust vs. altitude and mach
     TABLE(1)      maximum un-augmented thrust vs. altitude and mach
     TABLE(2)      augmented thrust multiplier vs. altitude and mach
     TABLE(3)      water-injection multiplier vs. altitude and mach
  -->
  MILTHRUST    43500
  MAXTHRUST    43500
  BYPASSRATIO  5.9
  TSFC         0.657
  ATSFC        0.0
  IDLEN1       30.0
  IDLEN2       60.0
  MAXN1        100.0
  MAXN2        100.0
  AUGMENTED    0
  AUGMETHOD    1
  INJECTED     1


  <TABLE NAME="IdleThrust" TYPE="TABLE">
    Idle_power_thrust_factor
    6
    6
    velocities/mach-norm
    position/h-sl-ft
    none
                0   10000   20000   30000   40000  50000
    0.0    0.0836  0.0528  0.0694  0.0899  0.1183  0.1467
    0.2    0.0501  0.0335  0.0544  0.0797  0.1049  0.1341
    0.4    0.0047  0.0020  0.0272  0.0595  0.0891  0.1203
    0.6   -0.0804 -0.0560 -0.0237  0.0276  0.0718  0.1073
    0.8   -0.2129 -0.1498 -0.1025 -0.0195  0.0473  0.0868
    1.0   -0.2839 -0.1104 -0.0469 -0.0270 -0.0158  0.0552
  </TABLE>

  <TABLE NAME="MilThrust" TYPE="TABLE">
    Effects_of_altitude_and_mach_on_thrust
    7
    6
    velocities/mach-norm
    position/h-sl-ft
    none
               0    10000   20000     30000    40000    50000
    0.0   1.0000   0.7216   0.4890   0.3115   0.1932   0.1104
    0.2   1.0000   0.7216   0.4979   0.3186   0.1948   0.1104
    0.4   0.9945   0.7344   0.5213   0.3383   0.2050   0.1230
    0.6   0.9968   0.7759   0.5591   0.3675   0.2240   0.1309
    0.8   0.9771   0.8025   0.6112   0.4196   0.2563   0.1522
    0.9   0.9300   0.7900   0.6000   0.3900   0.2300   0.1300
    1.0   0.5000   0.5000   0.4000   0.2000   0.1500   0.0900
  </TABLE>

</FG_SIMTURBINE>

--- NEW FILE ---
<?xml version="1.0"?>
<!--
  Thrust is computed directly by the engine
-->
<FG_DIRECT NAME="Direct">
</FG_DIRECT>


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