Mild Detonating Cord (MDC) | PacSci EMC
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Mild Detonating Cord (MDC).

Mild Detonating Fuze (MDF)

PacSci EMC / Products / Linear Explosives / Mild Detonating Cord (MDC)

MILD DETONATING CORD (MDC)

MILD DETONATING FUZE (MDF)


Mild Detonating Cord

PacSci EMC has manufactured millions of feet for linear explosive products over decades of continuous production. We manufacture MDC sheathed in a variety of materials for major oil and gas service providers. Our MDC is typically drawn or extruded into a round configuration. It can be rolled into an elliptical or flat ribbon shape, supporting complex needs. Our detonating cords can be further sheathed in metal tubes making it possible for the MDC to operate in temperatures of up to 500°F for 50 hours.


Mild Detonating Cord / Mild Detonating Fuze (MDC / MDF) is a metal clad linear explosive usually drawn or extruded in a round configuration.  It can be rolled into an elliptical or flat ribbon shape based on customer requirements.   MDC is normally manufactured in core loads ranging from 2.5 grains per foot (162 mg) to 100 plus grains per foot.  The sheath materials, a continuous seamless construction, commonly used are tin, lead, aluminum and silver.  The explosive core materials used are RDX, HNS, PETN, CH-6, HMX, and PBX-N5.  We also have the capability to load unique explosive materials customers have the require loading into and MDC / MDF configuration.

In MDC / MDF, the detonation is defined as an exothermic reaction (explosion) that propagates beyond the velocity of sound.  Mild Detonating Cord in most configurations will rupture when fired unless outer layers of fiberglass, Kevlar, tubing or steel braiding are added for partial or full containment.  For added mechanical strength and environmental protection, the smaller diameter MDC sizes can be encased with polyethylene or nylon plastics.  This will add approximately .01-inch wall thickness to the total cross-section.

We use established standard acceptance testing for all MDC it manufactures including core load, moisture analysis, detonation velocity and dimensional checks.  We also use its standards in conjunction with or in additional to customers testing levels and sampling, as appropriate.

Shipping MDC / MDF is dependent on its final configuration. If being sent to customer on a spool the ends are adhesive sealed first to ensure no adverse effects on the explosive core.  It is normally rolled on 12 to 24 inch spools.  Shipping classifications will be dependent on the final product being shipped and classification approval by the appropriate agencies.

    • Long continuous lengths to transfer an explosive signal from one device to another.
    • Adjust the amount of explosive to the size appropriate for the intended event, big or small
    • Use different explosive and sheath materials to account for different environmental and platform interfacing challenges (i.e. temperature, diameter, shock, flexibility, etc.)
    • Flexibility or semi-rigid design allows shaping for routing MDC/MDF or one of its next higher assemblies into simple or complex platforms/applications
    • MDC/MDF can be used as a raw product or in next higher assemblies & components (Design application flexibility)

The reliability of our Mild Detonating Cord (or Mild Detonating Fuze) to detonate over its entire length after proper initiation is estimated at greater than .9999 at 90% confidence level. This high level of inherent reliability can be enhanced in system application through the use of multiple (redundant) paths using similar cord.

A large portion of MDC / MDF manufactured at PSEMC is loaded into higher assemblies and components used in multiple aircraft, missile, munition, space and commercial applications.

COMPONENTS/ASSEMBLIES

Detonating Explosive Transfer Lines (ETLs)
Aircraft, Missiles, Space & Oil/Gas

  • Shield Mild Detonating Cord (SMDC)
  • High Pressure Shielded Mild Detonating Cord (HP-SMDC)
  • Flexible Confined Detonating Cord (FCDC)
  • Confined Detonating Cord (CDC)
  • Flexible Detonating Cord (FDC)

Expanding Tube Assembly (ETAs)
Aircraft, Missiles & Space

  • Emergency Canopy Release Lines (ECRLs)
  • Sure-Sep Stage Separation Assembly
  • Underwater Severance Assembly
  • ETRS Ring

Canopy Fracturing Assemblies

Window Cutting Assemblies (WCAs)

Skin Severance Assemblies (SSA)

Gun Conical Charge Initiation Cord

Munition/Weapon Initiation

SYSTEMS/SUB-SYSTEMS

Aircraft Emergency Escape Systems (EES)
including:

  • Canopy Fracturing System (CFS)
  • Transparency Removal System (TRS)
  • Canopy Jettison System (CJS)
  • Underwater Emergency Egress System
  • Interseat Sequencing System (ISS)

Explosive Signal Transfer Network

Payload Deployment System

Satellite Placement System

Stage Separation System

Flight Termination System (FTS)

Detonation Velocity
(explosive material type & metal clad material dependent)
6,000 – 8,200 meters/second


Core Load Tolerance
+/-10%


High Temperature Storage
(explosive material type & metal clad material dependent)
+425°F


Applicable Specifications
WS5003
MIL-D-21625E Type III Release
MIL-D-23615(A)
MIL-STD-810
RCC-319
MIL-STD-882
MIL-STD-1168
MIL-HDBK-781
+ numerous platform specific requirements documents

Reliability
0.9999 at 90% Confidence Level


High Pressure (HP SMDC Oil/Gas only)
25,000 psi


Operating Temperature
(explosive type, metal sheath material & final configuration dependent)

-65°F – +200°F Typical Aircraft Applications (lead sheath, HNS loaded)
-65°F – +350°F Typical Missile/Munition Applications
-65°F – +270°F Typical Space Applications
-65°F – +400°F Typical Oil/Gas Applications


ENVELOPE / INTERFACE DIMENSIONS

The Evolved Reefing Line Cutter may be tailored to fit many customized envelopes, below are the envelope dimensions of our baseline design.


Mild Detonating Cord Technical Envelope

Core Load Grains*/Ft “A” Diameter (inches) Weight/Ft
  • 2.5 – 3.5
  • 20 – 25
  • 50 – 60
  • 100 – 120
  • .070
  • .140
  • .240
  • .315
  • .012 lb/ft
  • .037 lb/ft
  • .093 lb/ft
  • .190 lb/ft
*1 grain = .064 grams

 


ENABLING MISSION SUCCESS

Military Aircraft Ejection

When a military aircraft ejection is imminent, removing the canopy by jettison or fracturing is advisable to avoid the elevated levels of head and neck load on the aircrew member ejecting.

Learn More

Payload Separation

Launch vehicles and missiles contain configurations that need to dispense a payload during the course of their mission.

Learn More


 

LET US HELP

Need more information or have a specific requirement you would like us to meet?
Contact us at the link below, or for immediate assistance call 831.630.5402.

Contact Us

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