MixedFlowTurbofan:

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   Mixed flow turbofan engine performance.

   A mixed flow turbofan is one in which the fan and core streams
   mix in the same nozzle. This model supports afterburning.
   This is the same code as in JetEnginePeformance but designed for
   a single input. The outputs are the same as RamjetH2. Only mks units
   are supported in this function.

   Type MixedFlowTurbofan for a demo

   This function employs a reference model and its outputs are deviations
   from the reference model. Type

   ref = MixedFlowTurbofan

   to get the reference data structure along with the demo.

   Note that only ref.h0 need be entered for the atmospheric parameters.

   The following are computed from the Standard Atmosphere and AtmGamma
   as follows.

   q = StdAtm( ref.h0 );

   ref.p0        = q.pressure;
   ref.a0        = q.speedOfSound;
   ref.t0        = q.temperature;
   ref.rho       = q.density;
   ref.gammaC    = AtmGamma( ref.t0 );

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   Form:
   [t, tSFC, f, M, thR] = MixedFlowTurbofan( action, varargin )
---------------------------------------------------------------------------

   ------
   Inputs
   ------
   action      (1,:) 'initialize' 'update'

   if action == 'initialize'

   ref         (1,1) Reference conditions
                     See JetEngineDefinitions.m

   if action == 'update'

   h           (1,1) Altitude
   v           (1,1) Velocity
   p           (1,1) Throttle settings
                     .afterburner   (1,1) Afterburner on == 1
                     .throttleRatio (1,1) Throttle ratio
                     .tT4           (1,1) Combustor temperature (K)     
                     .tT7           (1,1) Afterburner temperature (K) 

   -------
   Outputs
   -------

   if action == 'initialize'

   ref         (1,1) Full set of reference conditions

   if action == 'update'

   t           (1,1)  Thrust (N/m^2)
   tSFC        (1,:)  Thrust specific fuel consumption
   f           (1,1)  Fuel air ratio structure
                      .f   (1,1) Fuel air ratio
                      .fAB (1,1) Afterburner fuel air ratio
                      .fO  (1,1) Mixed fuel air ratio
   M           (1,:)  Mach number
   thR         (1,:)  Thrust to mass flow ratio

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   Reference: Mattingly, "Elements of Gas Turbine Propulsion,"
              McGraw-Hill, 1996, 2005, p.551
---------------------------------------------------------------------------

Children:

Common: General/StdAtm
Common: Graphics/Plot2D