Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

Thermal Transient Characteristics of Initiator with STS 304 Bridgewire

STS 304 발열선 착화기의 열전이 특성

  • Published : 2006.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Thermal transient tests were performed on the electric initiator with STS 304 bridgewire(diameter 2.3 mil) and $Zr-KCIO_4$ primary charge. Analysing the test data using fitted Wire Model shows that the thermal characteristic parameter related to primary charge is changed sharply around $300^{\circ}C$. It is determined that this phenomenon is due to endothermic reaction from phase transition of $KCIO_4$, which is a component of the primary charge.

STS 304 발열선과 $Zr-KCIO_4$ 기폭화약을 사용한 전기식 착화기에 대한 열전이 특성을 시험하고 Fitted Wire Model로 분석한 결과, 약 $300^{\circ}C$ 부근에서 기폭화약과 관련된 열전이 특성 파라미터가 급격하게 변화되었다. 이 현상은 기폭화약에 사용된 $KCIO_4$의 상변화로 인한 흡열반응에 의해 발생된 것으로 판단된다.

Keywords

References

  1. 윤현걸, 류병태, 최창선, "고체추진기관의 탄환 충격시험", 한국추진공학회지, 제4권 제4호, 2000, pp.114-122
  2. L. A. Rosenthal, "Electro-Thermal Equations for Electro-Explosive Devices", Naval Ord. Lab. NAVORD-R-6684, Aug., 1959
  3. L. A. Rosenthal, "Electro-Thermal Measurement of Bridgewires Used in Electroexplosive Devices", IEEE Transactions on Instrument & Measurement, Vol. IM-12, No. 1, Jun., 1963, pp.17-21
  4. W. C. Prinse, M. W. Leeuw, "Analysis of the Functioning of Bridgewire Igniters", Propellants, Explosives, Pyrotechnics, 13, 1988, pp.120-125 https://doi.org/10.1002/prep.19880130406
  5. Jinn-Shing Lee, "Thermal Properties and Firing Characteristics of The Zr/$KClO_4$/Viton A Priming Compositions", Thermochimica Acta, 392-393, 2002, pp. 147-152 https://doi.org/10.1016/S0040-6031(02)00426-4
  6. MIL-DTL-23659D "Detail Specification Initiators, Electric, General Design Specification For", 3 Mar. 2003, pp.5-12
  7. MIL-HDBK-1512 "Electroexplosive Subsystems, Electrically Initiated, Design Requirements And Test Methods", 30 Sepl. 1997, pp.5-13
  8. MIL-STD-1576 "Electroexplosive Subsystem Safety Requirements And Test Methods For Space Systems", 31 Jul. 1984, pp.10-23
  9. MIL-HDBK-83728 "Criteria For Explosive Systems And Devices Used On Space Vehicles", 01 Jan. 1999, pp.22, 55-62