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Expanding Tube Assembly (XTA).

XTA | ETA | XSMDC

PacSci EMC / Products / Linear Explosives / Expanding Tube Assembly (XTA)

EXPANDING TUBE ASSEMBLY


Expanding Tube Assembly

Expanding Tube Assemblies (XTA), also known as Expanding Shielded Mild Detonating Cord (XSMDC), are used to provide explosively driven, contamination-free reliable separation. The expanding tube assembly is a formed stainless steel tube containing a linear Mild Detonating Cord (MDC). The tube is formed into an oval shape and sealed on both ends by welded end fittings which include loaded booster shells. These shells provide means for redundant initiation of the assembly. After initiation, the MDC propagates and the energy expands the tube creating the necessary mechanical impulse to achieve separation of the targeted assembly. Targets for separation include aluminum ligaments, acrylic panels, frangible hooks, or other frangible structures as Expanding-Tube-Assembly-imagedesired by customer specification.


Expanding Tube Assembly

The XTA is used in applications requiring precise separation and containment of combustion products. It is used for low weight applications due to reduced need for reinforcements to support device compared to alternative systems. The attenuating properties of the XTA reduce vehicle and crew exposure not only to combustion products but harmful overpressure in extreme environments while still maintaining the benefits of using an explosive separation system. XTA can be used in applications from the upper atmosphere to underwater conditions.

  • Used on Rotor Systems Research Aircraft (RSRA) X-wing
  • Used on F-16 canopy emergency jettison system
  • Used on Delta III stage separation
  • Used on Delta IV stage separation
  • Qualified for use on Apache AH-64 canopy fracturing system (CFS).
  • Integrating for use on Commercial Crew Transportation System (CCTS) CST-100.

Operating Temperature
-70°F to +180°F


Output
Severance of .075” Aluminum
Severance of .150” Stretched Acrylic


Initiation
Electrical Detonator with typical 1 grain Booster Shell
Energy Transfer Line – SMDC, FCDC


Shock

Frequency Spectrum Level
(Hz) (Q=10)
100 30
100-3000 +5.3dB/Octave
3000+ 2125G

TSH & A
28 days per MIL-D-21625


Salt Fog
Mil-D-21625


Sand & Dust
Mil STD 810-G


Icing
Mil STD 810-G


Applicable Specifications
Qualified for
DODE-83578A


ENVELOPE / INTERFACE DIMENSIONS

PacSci EMC’s Expanding Tube Assembly can be customized to fit many customer envelopes.
Expanding Tube Assembly Technical Envelope

 

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