Explosive Transfer Systems and Receptor Ordnance. Explosive transfer systems (ETS) are used to transmit the initiation reaction from the initiator to the receptor ordnance. ETSs shall be designed to meet the applicable safety sections of DoD-E-83578 and the requirements below.
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Most ETS harnesses contain flexible confined detonation cord, mild detonating cord, or mild detonating fuse terminated by end booster caps or manifolds.
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13.7.1. The explosive or pyrotechnic mix shall not degrade, decompose, or change chemically over its life causing a more sensitive device.
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13.7.2. Periodic testing of ordnance to verify no sensitivity changes shall be in accordance with DoD-E-83578 unless it can be shown that the sensitivity with aging is not a credible concern with the specific explosive composition.
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13.7.3. Explosives used in ETS lines shall be secondary explosives.
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13.7.4. Flexible confined detonation cord (FCDC) shall not fragment or separate from end fittings upon initiation. Gaseous emission is permissible.
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13.7.5. The ETS shall not detonate and shall be capable of performing its function (if failure can create a hazard) after being subjected to a 6-foot drop on to a steel plate.
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13.7.6. The ETS shall not initiate or be damaged to the extent it is unsafe to handle after being subjected to a 40-foot drop on to a steel plate.
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13.7.7. All ETS interconnections shall provide for safety (lock) wiring or a PSWG and Range Safety approved equivalent.
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13.7.8. An electrically conductive path shall exist between ETS components and their attachment fittings. The bonding resistance should be designed to be 2.5 milliohms but in no case shall the resistance exceed 5 ohms.
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13.7.9. ETS fittings shall be designed and located to facilitate installation of the end receptor ordnance components in the launch vehicle as late as practical.
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13.7.10. Fittings that should not be reversed or interchanged (because they may cause a hazard) shall be designed so that reverse installation or interchange is not possible.
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13.7.11. Exposed end fittings shall be equipped with protective caps.
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13.7.12. Receptor ordnance shall be designed to meet the applicable safety sections of DoD-E-83578 and this part and shall use secondary high explosives.
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Examples of secondary high explosives used for receptor ordnance include such items as PETN, RDX, cyclotetramethylenetetra-nitramine (HMX), or 2,2,4,4,6,6 hexanitrostilbene (HNS).
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13.7.12.1. Explosives shall be non-hygroscopic.
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13.7.12.2. Specific approval from the PSWG and Range Safety is required for all explosive compositions.
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13.7.13. The receptor ordnance shall not detonate after being subjected to a 6-foot drop test on to a steel plate.
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13.7.14. The receptor ordnance shall not initiate or be damaged to the extent it is unsafe to handle after being subjected to a 40-foot drop onto a steel plate.
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