Public Domain Aeronautical Software

List of Public domain aeronautical software maintained by pdas www.pdas.com and some other intresting projects

1. Ablation Dynamics
   Analyze the transient response of an ablating axisymmetric body, including the effect of shape change.  / ABAXI
2. Ablative Nozzle Materials
   Predict the ablation performance of rocket nozzle heat protection materials. (work-in-progress)  / ABLATE
3. Aeroelastic Analysis
   Estimate the planform and aeroelastic effect on stability derivatives and induced drag. (work-in-progress)  / ELASTIC
4. Ascent
   An extremely fast and flexible C++ simulation engine and differential equation solver.  / ODE Integrator
5. Astro
   astro is a header-only, C++ (template) library that provides basic astrodynamics functionality. It is intended to be lightweight and simple to use in other projects.  / ASTROTK
6. Atmospheric interaction plume
   Predict the gas dynamic and chemical properties of underexpanded rocket plumes. (work-in-progress)  / AIPP
7. 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
8. Three-Dimensional Supersonic Viscous Flow
   Determine the viscous and inviscid flow about a body of revolution at angle of attack. (work-in-progress)  / AOFA
9. 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
10. Analysis of Aircraft Motions
    Derive aircraft motions, forces, and accelerations from radar range data.  / ATC
11. 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
12. 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
13. Cascade Flow (2D)
    Nonrotating Blade-To-Blade, Steady, Potential Transonic Cascade Flow Analysis Code (work-in-progress)  / CAS2D
14. 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
15. Cold Arc
    Dissociated air flow effects during plasma arc testing. (work-in-progress)  / COLDARC
16. 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
17. 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
18. Conical Relaxation
    Conical relaxation program for supersonic wing design and analysis (work-in-progress)  / COREL
19. Contour Plotting (I)
    A General Algorithm For The Construction Of Contour Plots  / CONPLOT
20. Contour Plotting (II)
    Generalized digital contouring program  / CONTOUR
21. 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
22. Divergence
    Aeroelastic divergence characteristics of unguided, slender body, multi-stage launch vehicles (work-in-progress)  / DIVERGE
23. Eppler
    The well-known Eppler airfoil program including boundary layer analysis.  / EPPLER
24. 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
25. 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
26. Flow Field in Supersonic Inlet
    Based on 2D or axisymmetric method of characteristics. NASA Ames program by Virginia Sorensen.  / INLET
27. 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
28. 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
29. 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
30. 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
31. GRAPE
    Two-Dimensional Grids About Airfoils And Other Shapes By The Use Of Poisson's Equation.  / GRAPE
32. 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
33. 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
34. Interplanetary Mission Planner
    A flexible interplanetary mission analysis program using patched conics. (work-in-progress)  / TOMARS
35. Line Interpolation and Line Intersection
    Tools to help you get those needed data points when doing an airplane layout.  / LININTRP
36. IPEG
    Improved Price Estimation Guidelines (work-in-progress)  / IPEG
37. LONGLIB
    A Graphics Library for Engineering Plots. (work-in-progress)  / LONGLIB
38. Mean Aerodynamic Chord
    Compute the mean aerodynamic chord of a wing of arbitrary planform.  / GETMAC
39. Kernel Function
    Compute unsteady aerodynamics with a kernel function technique which uses assumed pressure functions with unknown coefficients. (work-in-progress)  / KERNEL
40. Mass Properties of a Rigid Structure
    Rapidly calculate the mass properties of complex rigid structural systems.  / MASSPROP
41. Missile Lift
    Aerodynamic Lift On Wing-Body Combinations At Small Angles Of Attack In Supersonic Flow (work-in-progress)  / MISLIFT
42. Mission Analysis
    A segmented mission analysis program for low and high speed aircraft. (work-in-progress)  / NSEG
43. 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
44. NASTRAN plotting post processor
    Plot the results from NASTRAN. (work-in-progress)  / NASTPLT
45. Nozzle Exhaust
    Analysis of three-dimensional supersonic nozzle exhaust flow fields (work-in-progress)  / EXHAUST
46. Optical Systems Analysis
    A General Optical Systems Evaluation Program (work-in-progress)  / GOPTICS
47. Optimum Flight Path (I)
    A vertical profile which minimizes aircraft fuel burn or direct operating cost (work-in-progress)  / OPTIM
48. Optimum Flight Path (II)
    Optimum Trajectory of a Turbofan Airplane  / OPTTRAJ
49. 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
50. Pablo
    Compute aerodynamic properties of an airfoil with boundary layer. Similar to Eppler, but coded with MatLab.  / PABLO
51. 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
52. PanAir input pre-processor
    Helps create the carefully formatted input files to PanAir.  / PANIN
53. 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
54. Polynomial Root Finder
    Solves quartic/cubic/quadratic polynomial equations with real coefficients taking special care in accuracy and precision.  / QUARTIC
55. 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
56. 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
57. Rotorcraft
    Aeroelastic Analysis for Rotorcraft in Flight or in a Wind Tunnel (work-in-progress)  / ROTOR
58. Turbine Rotor Blade
    Design of Two-Dimensional Supersonic Turbine Rotor Blades with Boundary-Layer Correction (work-in-progress)  / RBLADE
59. Super/Hypersonic Inviscid Flow
    Computes the inviscid supersonic/hypersonic flowfield about complex vehicle geometries. (work-in-progress)  / SHIFARC
60. 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
61. Sonic Boom
    This program computes the propagation of a sonic boon through the earth's atmosphere.  / BOOM
62. 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
63. Sneak Circuit Analysis
    Analyzes electrical circuits to assist in the design of wiring bundles. (work-in-progress)  / SNEAK
64. 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
65. Space Shuttle Synthesis Program
    Conceptual design synthesis of one- or two-stage launch vehicles. (work-in-progress)  / SSSP
66. Supersonic Wing Analysis
    Combines source and vortex panel singularities for calculating the linear theory estimate of supersonic configuration aerodynamics. (work-in-progress)  / W12SC3
67. 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
68. Tandem Blade Flowfield
    Velocities And Streamlines on a Blade-To-Blade Stream Surface of a Tandem Blade Turbomachine. (work-in-progress)  / TANDEM
69. Supersonic Wing Design
    The famous Carlson-Middleton program for supersonic wing design. (work-in-progress)  / TEA201
70. Thermal Response
    One-Dimensional Numerical Analysis Of The Transient Thermal Response Of Multilayer Insulative Systems (work-in-progress)  / THERM1D
71. Tidy
    A program for renumbering statements in a Fortran program.  / TIDY
72. Thermal Protection System
    Multidimensional Heat Conduction Program (work-in-progress)  / TPS
73. Trajectory Operations and Requirements
    Monte Carlo Investigation Of Trajectory Operations And Requirements. (work-in-progress)  / MONITOR
74. Turbulent skin friction
    A coding of the reference temperature method of Barbara Short and Simon Sommer of NASA Ames.  / TURBSF
75. 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
76. 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
77. Virtual Reality
    This program makes a VRML model (a .wrl file) from a wireframe geometry in LaWGS format. (work-in-progress)  / VRML
78. Visualize Three-Dimensional Surfaces
    Visualize a function of two variables.  / VIEWER
79. 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
80. 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
81. Wave Drag by Area Rule
    This is the famous Harris Wave Drag Program from NASA Langley.  / WAVEDRAG
82. 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
83. Wireframe generator
    Creates wireframe models of simple wings and bodies.  / MAKEWGS