pa-iv

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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