TDK 94X^TM incorporates the 1994 version of TDK/VAV, parts of the 1994 version of the Liquid Propellant Rocket Engine Performance Program (LPP), as well as foreign funded improvements incorporated in TDK 91X^TM.  TDK 94X^TM uses the standard JANNAF methods for performance predictions of Liquid Rocket Engines.  TDK 94X^TM analyzes and summarizes the performance loss mechanisms into four categories:  Combustion chamber losses, Boundary Layer losses, chemical kinetics losses, and divergence losses.

 The TDK 94X^TM is sufficiently fast and robust to provide performance predictions for extensive parametric studies and sufficiently accurate to provide flowfield and performance solutions for detailed studies.

TDK 94X^TM contains the following features and capabilities:
 

• Uses a Two-Dimensional Method of Characteristics solution with fully coupled finite rate kinetics.
• Models chemical reactions with a generalized reaction package that includes 3rd body efficiencies and four different reaction rate forms.
• TDK 94X^TM  optionally performs flow solutions with frozen or equilibrium chemistry.
• Provides planar or axially symmetric flow solutions.
• Supports both upper and lower wall flow simulations.
• Treats planar flow/external flow interactions.
• Treats mass injection at the wall for tangential slot injection.
• Treats transpiration cooling at the wall for any arbitrary injectant.
• Models the Dual Bell configuration.
• Incorporates a Nozzle Contour Optimization (NCO) routine, which optimizes the  nozzle including the effects of the boundary layer and regenerative cooling.
• Treats discrete shocks:  attached or induced.
• Models equilibrium radiation heat transfer for the wall.
• Models variable mixture ratio profiles from the combustion chamber injector.
• Provides engine performance predictions for axially symmetric nozzles, scarfed nozzles, and plug nozzle configurations.
• Provides an extensive post plotting package for flowfield visualization.  Supports PostScript and laser jet printers.

• IBM RS 6000 (AIX 3.2)
• Silicon Graphics (IRIX 6.5)
• SUN SPARC (SunOS 5.7)