PA-IV

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ORIGINAL CONCEPT

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CONSTRUCTION

SCHEMATICS

PA-IV

Status: Completed 07/13/2009

  • Capacitor Bank Assembly Completed and Initial Design Completed.
  • Test Coils and Projectiles created.
  • Ammunition Magazine Completed.
  • Boost Converter Board Completed.
  • Barrel Mount, Injector, and Main Assembly Completed.
  • Detect, Delay, and Pulse Width Modulation Board Competed.
  • Switching and Snubbing Modules Completed.
  • Display Driver Board Completed.
  • Laser Sight and LED Flashlight Installed.
  • Tuning Board Completed.
  • Display and Interface Board Completed.
  • Velocity Maximization Completed.
  • Final Assembly Completed.
  • Painting Done-For Now

 

The PA-4 is meant to be an evolution of the PA-III-B in terms of technology and design. It includes a boost converter, blue LED Display, user interface, as well as a timing system for the best possible efficiency for a single stage thyristor driven coilgun for the stored energy level.

 

STATS:

  • General:
    • Designation: PA-IV
    • Name: Pulse Accelerator 4
    • Stages: 1+Injector
    • Design Type: Handgun
    • Loading Type: Autoloader Solenoid/Magazine
    • Switching Type: 1200 V 160 A (2080 A pulse) SCR
    • Snubbing: Quad Series Connected Ultrafast Diodes
    • Trigger: Infra-Red Optical Sensor
    • Charging-12 V NiCd
    • Charger Type: Regulated Boost Converter
  • Coil Description:
    • Injector Coil Design:
      • Wire Size: 28 Gauge
      • Length: 30 mm
      • Layers: approx. 30
    • Primary Coil Design:
      • Wire Size: 20 Gauge
      • Length: 30 mm
      • Layers: 8
      • Encased in Laminated Steel
  • Capacitors:
    • Injector Coil-
      • Capacitance: 150 uF
      • Voltage: 400 VDC ( To 450 V)
    • Primary Accelerator-
      • Capacitance: 1100 uF
      • Voltage: 400 VDC ( To 450 V)
  • Projectile:
    • Projectile Material: Steel (Standardized)
    • Diameter: 7.94 mm (5/16 in)
    • Length: 30 mm (+-1 mm)
    • Mass: 9 g (+-.3 g)
  • Measured:
    • Exit Velocity: 33.0 m/s (108.3 ft/s)
    • Load Time: 7 s (Fully Charged Batteries)
  • Calculated:
    • Accelerator Stored Energy: 111 J
    • Kinetic Energy: 4.9 J
    • Weapon Efficiency: 4.4 %
    • Momentum: 0.30 kg*m/s
    • Charger Power (New Batteries): 18 W