Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Performance Study of Nozzleless Booster Casted to the High Density Solid Propellant with Zr as a Metal Fuel

고밀도 지르코늄(Zr) 금속연료 조성의 추진제를 이용한 무노즐 부스터 성능 연구

  • Received : 2017.04.06
  • Accepted : 2017.10.18
  • Published : 2018.04.01
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Abstract

This study was carried out to improve the performance characteristics of nozzleless boosters that are used in ramjet boosters. A propellant using Zr as the metal fuel was developed, which provided a higher density than the propellant using Al as the metal fuel. The developed propellant was cast using the nozzleless booster and a ground test was carried out by varying the length-to-diameter ratio (L/D ratio) of the propellant. From a comparison between the performance characteristics of propellants using Zr and Al, it was proved that the performance of the propellant using Zr is higher than that of propellant using Al, except for the specific impulse, under all tested conditions. As the length-to-diameter ratio was increased, the specific impulse of the propellant using Zr was decreased by 88% compared with that of the propellant with Al. However, because of the density difference between the propellants, the impulse density of the propellant with Zr was higher than that of the propellant with Al under all tested conditions.

무노즐 부스터의 성능을 향상시키기 위한 연구를 수행하였다. 알루미늄 금속연료와 비교하여 고 밀도를 갖는 지르코늄을 사용한 고밀도 추진제를 개발하였고, 이 추진제를 이용하여 세장비에 따른 성능 특성을 알아보았다. 알루미늄 조성의 추진제 성능과 비교하여 모든 세장비에서 지르코늄 조성의 추진제가 비추력을 제외하고 높게 나타났다. 지르코늄 조성의 추진제의 비추력은 세장비가 증가함에 따라 시험조건 내에서 알루미늄 조성의 추진제와 비교하여 88%까지 감소하였다. 그러나, 추진제의 밀도차이로 인하여 모든 세장비에서 알루미늄 조성의 추진제보다 지르코늄 조성의 추진제가 높게 나타났다.

Keywords

References

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