Ordnance Sciences Services

NTS has over thirty years of experience providing ordnance engineering and test services. Scientists in our Dana Point, CA and Camden, AR facilities have considerable experience and expertise in the development of detailed test plans and procedures to high level program requirements, failure investigation and analysis, ordnance product design, reverse engineering, and the design and development of custom test apparatus.

3D CAD Modeling and TDP Development
with ProEngineer Foundation XE

CAD Model of M2 HB Gun System

Parametric Solid Modeling

  • Detailed Documentation with 2D and 3D Drawings
  • Assembly Modeling/Rendering
  • Integrated CAM Programming

Import/Export of Model Geometry

  • Kernel Support for ACIS, Parasolid, and Granite
  • Direct translators for CADDS and AutoCAD DWG
  • Translators for AutoCAD DXF, IGES, STEP, SET, VDA, ECAD, CGM
  • COSMOS/M, PATRAN, and SUPERTAB geometry files

Mechanism Dynamics Analysis

  • Analyze Reaction of Design to Dynamic Forces / Gravity /Friction
  • Modeling of Springs, Dampers, Motors, Friction, Gravity, Dynamic Loads
  • Fuze Mechanical S & A Analysis, Gun System Ammunition Handling

Finite Element Analysis with ProEngineer Advanced Mechanica

Explicit Finite Element Structural Analysis

Structural Analysis

  • Static Stress and Displacement and Bucking Factors of Safety
  • Evaluate Natural Frequencies (Normal Modes)
  • Nonlinear Structural Analysis: Large Deformation, Hyper-elastic Materials, and Material Plasticity
  • Dynamic Analysis For: Time Response, Frequency Response, Random Response, and Shock
  • Modeling of Laminate Materials

Steady State and Transient Thermal Analysis

  • Applied Heat Loads, Prescribed Temperatures, and Convection Coefficients
  • Combined Structural/Thermal Analysis

Finite Element Fluid / Thermal Analysis

CFD Anaysis of an 81 mm Mortar

CFdesign Fluid / Thermal Finite Element Software

  • Finite Element Based CFD Code
  • Internal/External Flows
  • Prediction of Body Forces, Drag/Lift
  • Convection, Conduction, and Radiation Heat Transfer
  • Compressible, Transient, and Two-Phase Flows
  • Cavitation
  • Fluid/Structure Interaction (e.g. Spinning Projectiles)

Projectile and Rocket Motor Analysis

Arrow Tech Associates Software – PRODAS Projectile Modeling

  • Mass Properties Analysis
  • Aerodynamic Analysis
    • Spin, Fin, or Drag Stabilized Shapes
    • Attack Angle and Roll Induced Coef cients
    • Dynamic and Gyroscopic Stability
    • Aerodynamic Characteristics up to Mach 8
  • Trajectory Simulation
    • 4 or 6 Degree of Freedom Simulation
    • Muzzle Exit Analysis

Interior Ballistics Modeling

  • Tradeoff of Propellant Weight vs Projectile Weight, Barrel Twist, Propellant Blending, etc.
  • Compute Velocity, Breech and Base Pressure, Linear and Angular Acceleration vs Distance
    Along Barrel

Rocket Motor Performance Modeling

  • Tradeoff Nozzle Geometry, Grain Geometry, Propellant Burn Rate, Propellant Thermochemical Properties, Igniter Properties, and Booster Properties

Projectile Design and Analysis with PRODAS

  • Projectile Modeling
    • Mass Properties Analysis
    • Aerodynamics Analysis
      • Spin, Fin or Drag Stabilized Shapes
      • Attack Angle and Roll Induced Coefficients
      • Dynamic and Gyroscopic Stability
      • Aerodynamic Characteristics up to Mach 8
    • Trajectory Simulation
      • 4 or 6 Degrees of Freedom Simulation
      • Muzzle Exit Analysis
  • Interior Ballistics Modeling
    • Tradeoff of Propellant Weight vs Projective Weight, Barrel Length Twist, Propellant Blending, etc.
    • Compute Velocity, Breach, and Base Pressure, Linear and Angular Acceleration vs. Distance Along Barrel

White Papers

"Analysis of Inter-Chamber Energy and Mass Transport in High-Low Pressure Gun Systems" by Ryan Hill and Dr. Logan McLeod

"Modeling of Ordnance-Induced Pyrotechnic Shock Testing" by Dr. Logan McLeod and Santina Tatum

"Methodology for Transient Thermal Analysis of Machine Gun Barrels Subjected to Burst Firing Schedules" by Ryan Hill and Dr. Logan McLeod

 

 

Updated May 18, 2016