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			The Tribology and Mechanical Components Branch makes the following computer codes available to U.S. citizens: CFD Seal Analysis Industrial Codes* A computer Program for the Study of Fluid Dynamic Forces in SEALS. SCISEAL* A Computer Program for Study of Fluid Dynamic Forces in SEALS. The Seals Scientific code solves the full Navier-Stokes equations for fluid flow in a generalized coordinate system. The code has been equipped with several advanced physical models, numerical schemes and convenient means of problem specifications. DANST-PC (Dynamic ANalysis of Spur gear Transmissions) DANST-PC is a computer program for static and dynamic analysis of spur gear systems.  The program can be used for parametric studies to predict the static transmission error, dynamic tooth load, dynamic tooth bending stress and other properties of spur gears as they are influenced by operating speed, torque, stiffness, damping, inertia, and tooth profile.  DANST-PC runs on personal computers (386 or later) 640 Kb memory, co-processor, VGA graphics, DOS or Windows operating system. DANST-PC performs geometric modeling and dynamic analysis for low- or high- contact-ratio spur gears.  It can simulate gear systems with contact ratios ranging from one to three.  The program is based on a four-degree-of-freedom, lumped-mass model of a gear transmission. The model includes driving and driven gears, connecting shafts, motor, and load.  The equations of motion were derived from basic gear geometry and elementary vibration principles.  The dynamic solution is found by integrating the equations of motion. Sample results from DANST-PC Software Use Agreement (required) for a free copy of DANST-PC (US only) Questions? Contact Fred Oswald *For more information please visit the NASA Software Repository and select By Center, NASA Glenn Research Center, Engineering Design and Analysis Codes, and scroll to the code's name. NASA Software Repository View available software codes at NASA + View the site
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