This collection of aeronautical software consists of the following programs. Additional information on each program may be found by following the highlighted link. The name in bold type following the slash at the end of each program description is the name of the folder on the CD where the files for this program will be found. Some of the programs are noted as work-in-progress, indicating that they are lacking in instructions or documentation or do not run properly.
Ablation Dynamics | Analyze the transient response of an ablating axisymmetric body, including the effect of shape change. / ABAXI |
Ablative Nozzle Materials | Predict the ablation performance of rocket nozzle heat protection materials. (work-in-progress) / ABLATE |
Aeroelastic Analysis | Estimate the planform and aeroelastic effect on stability derivatives and induced drag. (work-in-progress) / ELASTIC |
Atmospheric interaction plume | Predict the gas dynamic and chemical properties of underexpanded rocket plumes. (work-in-progress) / AIPP |
Annular Duct Velocity | Compute the velocity distribution along an arbitrary line between the inner and outer walls of an annular duct with axisymmetric swirling flow. (work-in-progress) / ANDUCT |
Three-Dimensional Supersonic Viscous Flow | Determine the viscous and inviscid flow about a body of revolution at angle of attack. (work-in-progress) / AOFA |
Aircraft roll-out iterative energy simulation program | Analyze brake performance during landing rollout. It incorporates actual flight data from telemetry. Developed for the Space Shuttle vehicle. (work-in-progress) / ARIES |
Analysis of Aircraft Motions | Derive aircraft motions, forces, and accelerations from radar range data. / ATC |
Arrow Wing Wave Drag | Closed form solution for the wave drag of an arrow or delta wing with sharp edges based on work of Rogers and Puckett and Stewart. / ROGERS |
Atmosphere | Characteristics of the 1976 standard atmosphere to 1000 km altitude. An atmosphere procedure is given that you may include in your own programs. Separate versions are supplied in Basic, C, Fortran, Pascal, C++, and Fortran90, Visual Basic and Delphi, IDL, and Python. Sample programs are included that print an atmosphere table. Non-standard atmosphere routines (hot, cold, polar, tropical) are also included. / ATMOS |
Cascade Flow (2D) | Nonrotating Blade-To-Blade, Steady, Potential Transonic Cascade Flow Analysis Code (work-in-progress) / CAS2D |
Celestial Coordinate Transformations | There are at least three basic frames of reference for celestial coordinates: equatorial, ecliptic, and galactic. This module contains subroutines for performing transformations from one system into another. / CELEST |
Cold Arc | Dissociated air flow effects during plasma arc testing. (work-in-progress) / COLDARC |
Compressible Flow Calculator | Make calculations involving isentropic flow, normal shock waves, oblique shock waves, Rayleigh and Fanno flow, and characteristics of the standard atmosphere. / VUCALC |
Computer Methods for Mathematical Calculation | The software from the classic textbook by Forsythe, Malcolm and Moler has been rewritten in modern Fortran along with the sample problems and a number of the end-of-chapter problems. You probably need a copy of the book. / FMM |
Conical Relaxation | Conical relaxation program for supersonic wing design and analysis (work-in-progress) / COREL |
Contour Plotting (I) | A General Algorithm For The Construction Of Contour Plots / CONPLOT |
Contour Plotting (II) | Generalized digital contouring program / CONTOUR |
Digital Datcom | Estimate stability and control characteristics of a wide variety of airplane and missile configurations with this famous USAF program. Has all example cases from the document, both input and output. / DATCOM |
Divergence | Aeroelastic divergence characteristics of unguided, slender body, multi-stage launch vehicles (work-in-progress) / DIVERGE |
Eppler | The well-known Eppler airfoil program including boundary layer analysis. / EPPLER |
Fair Data | Compute the coefficients of a smoothing spline that approximates a set of data. Originally designed to be used for wind tunnel data but may be applicable to diverse applications. / FAIRDATA |
Flexible spacecraft dynamics | Simulate a large class of flexible and rigid spacecraft. The flexibility is treated continuously (by use of shape functions) rather than by finite elements. (work-in-progress) / FSD |
Flow Field in Supersonic Inlet | Based on 2D or axisymmetric method of characteristics. NASA Ames program by Virginia Sorensen. / INLET |
Fluid Properties | A companion program to GasProperties computes thermodynamic and transport properties of many gases. Treats air and steam as well as pure fluids. From NASA Glenn (Lewis). / FLUID |
Flutter Analysis by Strip Theory | A modified strip analysis has been developed for rapidly predicting flutter of finite-span, swept or unswept wings at subsonic to hypersonic speeds. (work-in-progress) / FLUTTER |
GasProperties | Compute real gas properties of ten important gases over a wide range of temperatures and pressures. Covers cryogenic regions and saturated liquid/gas regions. From NASA Glenn (Lewis). / GASP |
Geometry Conversion | Convert the geometry information for the WaveDrag,WingBody, and PanAir into WGS for input to the hidden-line program or ThreeView. Display your vehicle concepts. / 2WGS |
GRAPE | Two-Dimensional Grids About Airfoils And Other Shapes By The Use Of Poisson's Equation. / GRAPE |
Hypersonic Aerodynamics for Arbitrary Bodies. | This is a totally new program based on the USAF program written by Gentry, Smyth and Oliver of Douglas Aircraft. Currently, only the inviscid methods are coded. The geometry is supplied in LaWgs (Langley Wireframe Geometry Standard). (work-in-progress) / HYPER |
Induced Drag from Span Load Distribution. | This is a popular algorithm for computing the span load distribution on a planar wing when only a few sparse values of the loading are known. / INDUCED |
Interplanetary Mission Planner | A flexible interplanetary mission analysis program using patched conics. (work-in-progress) / TOMARS |
Line Interpolation and Line Intersection | Tools to help you get those needed data points when doing an airplane layout. / LININTRP |
IPEG | Improved Price Estimation Guidelines (work-in-progress) / IPEG |
LONGLIB | A Graphics Library for Engineering Plots. (work-in-progress) / LONGLIB |
Mean Aerodynamic Chord | Compute the mean aerodynamic chord of a wing of arbitrary planform. / GETMAC |
Kernel Function | Compute unsteady aerodynamics with a kernel function technique which uses assumed pressure functions with unknown coefficients. (work-in-progress) / KERNEL |
Mass Properties of a Rigid Structure | Rapidly calculate the mass properties of complex rigid structural systems. / MASSPROP |
Missile Lift | Aerodynamic Lift On Wing-Body Combinations At Small Angles Of Attack In Supersonic Flow (work-in-progress) / MISLIFT |
Mission Analysis | A segmented mission analysis program for low and high speed aircraft. (work-in-progress) / NSEG |
NACA Airfoils. | The coordinates of 4-digit, 4-digit-modified, 5-digit, 6-series, and 16-series airfoils may be accurately calculated. Newly modified to present upper and lower surface points at the same x-coordinate. Totally recoded in modern Fortran using modules. / NACA456 |
NASTRAN plotting post processor | Plot the results from NASTRAN. (work-in-progress) / NASTPLT |
Nozzle Exhaust | Analysis of three-dimensional supersonic nozzle exhaust flow fields (work-in-progress) / EXHAUST |
Optical Systems Analysis | A General Optical Systems Evaluation Program (work-in-progress) / GOPTICS |
Optimum Flight Path (I) | A vertical profile which minimizes aircraft fuel burn or direct operating cost (work-in-progress) / OPTIM |
Optimum Flight Path (II) | Optimum Trajectory of a Turbofan Airplane / OPTTRAJ |
Optimal Regulator Algorithms for the Control of Linear Systems | Design controllers and optimal filters for systems which can be modeled by linear, time-invariant differential and difference equations. / ORACLS |
Pablo | Compute aerodynamic properties of an airfoil with boundary layer. Similar to Eppler, but coded with MatLab. / PABLO |
Panair (A502) | High order aerodynamic panel code. The most versatile and accurate of all the linear theory panel codes. Subsonic/supersonic solutions with linear source strength variation and quadratic doublet strength variation. Very versatile boundary condition specifications. / PANAIR |
PanAir input pre-processor | Helps create the carefully formatted input files to PanAir. / PANIN |
Parametrized Investigation of Launch Opportunities and Trajectories | Delimits launch widows to define the dates and times of day that a satellite may be launched to satisfy mission constraints. (work-in-progress) / PILOT |
Polynomial Root Finder | Solves quartic/cubic/quadratic polynomial equations with real coefficients taking special care in accuracy and precision. / QUARTIC |
Quiz Program | An educational drill program that will teach you the aviation phonetic alphabet, 3-letter airport codes and more. Easily adaptable to other instructional tasks. / QUIZ |
Mars Relay Communication Link | Evaluates the communication link between a Mars lander, a Mars orbiter, and Earth. Designed for the Viking mission. (work-in-progress) / RELAY |
Rotorcraft | Aeroelastic Analysis for Rotorcraft in Flight or in a Wind Tunnel (work-in-progress) / ROTOR |
Turbine Rotor Blade | Design of Two-Dimensional Supersonic Turbine Rotor Blades with Boundary-Layer Correction (work-in-progress) / RBLADE |
Super/Hypersonic Inviscid Flow | Computes the inviscid supersonic/hypersonic flowfield about complex vehicle geometries. (work-in-progress) / SHIFARC |
Rational Spline Subroutines | Scientific data often contains random errors that make plotting and curve-fitting difficult. The Rational-Spline Approximation with Automatic Tension Adjustment algorithm leads to a flexible, smooth representation of experimental data. / RSPLINE |
Sonic Boom | This program computes the propagation of a sonic boon through the earth's atmosphere. / BOOM |
3-view and Silhouette | Perspective views of an arbitrary configuration defined by wireframe meshes of gridpoints with hidden line removal. Written by David Hedgley of NASA Dryden. A very simple program called 3view is also included that produces plan, side, and rear views from the same input file. / HLP |
Sneak Circuit Analysis | Analyzes electrical circuits to assist in the design of wiring bundles. (work-in-progress) / SNEAK |
Solar Powered Satellite | Computes the solar energy incident on photoelectric array and determines the thermal radiation gained and lost. Once these are known, the amount of power which can be generated and the temperature of the array is determined. / SOLARARR |
Space Shuttle Synthesis Program | Conceptual design synthesis of one- or two-stage launch vehicles. (work-in-progress) / SSSP |
Supersonic Wing Analysis | Combines source and vortex panel singularities for calculating the linear theory estimate of supersonic configuration aerodynamics. (work-in-progress) / W12SC3 |
Takeoff and Landing of Transport Aircraft | This program provides for the detailed performance analysis of the takeoff and landing capabilities of specific aircraft designs and allows for sensitivity studies. The program calculates aircraft performance in accordance with the airworthiness standards of the Federal Aviation Regulations. (work-in-progress) / TOL |
Tandem Blade Flowfield | Velocities And Streamlines on a Blade-To-Blade Stream Surface of a Tandem Blade Turbomachine. (work-in-progress) / TANDEM |
Supersonic Wing Design | The famous Carlson-Middleton program for supersonic wing design. (work-in-progress) / TEA201 |
Thermal Response | One-Dimensional Numerical Analysis Of The Transient Thermal Response Of Multilayer Insulative Systems (work-in-progress) / THERM1D |
Tidy | A program for renumbering statements in a Fortran program. / TIDY |
Thermal Protection System | Multidimensional Heat Conduction Program (work-in-progress) / TPS |
Trajectory Operations and Requirements | Monte Carlo Investigation Of Trajectory Operations And Requirements. (work-in-progress) / MONITOR |
Turbulent skin friction | A coding of the reference temperature method of Barbara Short and Simon Sommer of NASA Ames. / TURBSF |
V/STOL Aircraft Sizing and Performance | Performs comparative design study of V/STOL aircraft systems yielding aircraft size and mission performance data. (work-in-progress) / VASCOMP |
Variable Dimension Automatic Synthesis Program | VASP is a variable dimension Fortran version of the Automatic Synthesis Program, used to implement Kalman filtering and control theory. / VASP |
Visualize Three-Dimensional Surfaces | Visualize a function of two variables. / VIEWER |
Vortex Lattice Minimum Drag (VLMD) | This is one of many versions of the vortex lattice aerodynamic program from the low speed aerodynamics group at NASA Langley. / VLMD |
Variable Metric Algorithm for Constrained Optimization | The algorithm is based upon a variable metric method presented by M.J.D. Powell and a quadratic programming method by R. Fletcher. VMACO is a non-linear program developed to calculate the least value of a function of n variables subject to general constraints (both equality and inequality). / VMACO |
Wave Drag by Area Rule | This is the famous Harris Wave Drag Program from NASA Langley. / WAVEDRAG |
WingBody panel code | Subsonic/Supersonic Aerodynamics of simple wing-body-tail combinations. This is the Woodward panel code that includes calculation of the wing shape for minimum drag in supersonic cruise. / WINGBODY |
Wireframe generator | Creates wireframe models of simple wings and bodies. / MAKEWGS |
All programs are supplied with complete public domain source code. Many of the programs include sample cases (both input and output) along with instructions for preparation of input files. You may use any of the programs or subroutines in your aeronautical projects. Individual programs may be downloaded free of charge.