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BALLISTICeda  (Ballistic Design and Analysis Program)

BALLISTICeda is a computer program developed by EDA Ltd. in the collaboration with MKEK for the purposes of design and analysis of missiles and projectiles. It includes parametric 3D-solid model geometry, interior ballistics, exterior ballistics and flight mechanics modules.

Geometric Design Capabilities :

  • Parametric 3D Geometry Creation:
  • Nose:
  • Ogive (tangent and secant), Cone, Ellipse, Power series, Truncated, Hollow
  • Body :
  • Cylinder, Transition, Boat-tail, Flair, Groove, Rotating Band, User defined arbitrary rotational curve, Hollow
  • Wing & Fin :
  • Rectangular cross-section, Arc cross-section, Wedge cross-section, NACA series cross-section, Automatic sweep, tilt and skew angle adjustment, Automatic fin location (axial and rotational position), Cracked wing creation, Complex wing geometry creation
  • Barrel & Launcher :
  • Rifled bore, Combustion chamber, Breech, Shoulder, Forcing cone
  • Automatic component build up
  • Calculating mass and inertial properties
  • Export designed 3D model as step, iges, brep and stl formats
  • Sending 3D model to CAEedaTM CAD module automatically
  • Adding-removing and copying pasting components
  • Add-on and user-specified material properties

Figure - 1.  The bullet in a rifle bore, created by using BALLISTICeda’s parametric and automatic solid model generation capabilities.

Aerodynamic Calculation Capabilities:

Aerodynamic solver of BALLISTICeda uses component buildup method to find overall aerodynamic loads acting on a projectile or missile. Aerodynamic characteristics of major components such as wings, body, and tails are calculated by using linear theory and/or slender body theory are summed by considering component specific weighting interference factors. Some semi-empirical formulations based on experimental database may also be utilized.

  • Aerodynamic force and moment coefficients based on body axis (CA, CY, CN, CX, Cy, Cz) and (CD, CY, CL, Cx, Cy, Cz)
  • Static derivative
  • Dynamic derivatives

Figure - 2. Solid model creation,  drag coefficient prediction and comparison with the range data of M735 Kinetic Energy Projectile test case by using BALLISTICEda’ external aerodynamics module.

Flight Mechanics Calculation Capabilities:

  • 6DOF trajectory simulation
  • Static stability calculations
  • Wind effects (fixed or variable)
  • Meteorological input
  • Dispersion analysis
  • Hit target analysis for moving and stationary targets
  • Animated 3D flight path and projectile motion using 3d solid model
  • 4DOF trajectory simulation
  • Gyroscopic and dynamic stability
  • Standard atmosphere model
  • User defined propulsion input
  • Firing table preparation
  • Drag calculation using trajectory data obtained by radar

Figure - 3. The flight simulation of M735 Kinetic Energy Projectile with velocity, altitude and distance graphs by using BALLISTICeda’s flight mechanics and post-process modules.

Interior Ballistics Calculation Capabilities:

  • One dimensional thermodynamic ınterior ballistic model with global parameters for ınterior ballistic cycle trajectory simulation of projectiles.
  • Bullet motion simulation in rifled bore
  • Calculation of resistance pressure and band wear
  • Calculation of thermodynamics and gas dynamics properties
  • User upgradeable propellant material catalog
  • Calculation of interior ballistic fitting factors with respect to maximum chamber pressure, muzzle velocity, propelling charge and propellant temperature.
  • Propellant grain types : Ball, strip, cylinder, single-perforated cylinder, seven-perforated cylinder, nineteen-perforated cylinder, nineteen-perforated hexagon
  • Structural strength analysis based on "mono-block and multilayered thin wall structures
  • Time dependent calculations (base and breach pressure, gas and wall temperature, projectile velocity, acceleration, spin and travel, total energy and detailed energy losses

Figure - 4. Simulation of a bullet in a barrel by using BALLISTICeda’s internal ballistics module.

Figure - 5. The modeling of chamber, cartridge case, bullet and rifle bore, prior to internal ballistic simulation by BALLISTICeda

Post Processing Capabilities:

  • Tabulated solution results of aerodynamics and flight mechanics modules are automatically sent to the post-processing module
  • Allows plotting XY graphs of variables whose tabulated values given by a file or defined by mathematical functions
  • Offers a wide range of control options to achieve publishable-quality XY graphics
  • Allows user to define new variables from combination of other variables
  • 3D-xyz plotting
  • Data extraction
  • Create and save plot as animation
  • Data digitizing from picture
  • Exports raster (bmp, jpeg,gif) and vectoral (ps, pdf, swg) pictures.

Figure - 6. Breach pressure, bullet spin rate, barrel wall, and gas temperature graphs obtained by BALLISTICeda’s internal ballistics simulation module