ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Technology of Explosive Cutting to Clear Ejection Path
Received date: 2012-02-17
Revised date: 2012-04-24
Online published: 2013-01-19
On account of aircraft stealth performance and other factors, the top of an aircraft cockpit is now a metal structure rather than the traditional hatch structure. In the course of ejection, the technology of explosive cutting is used to cut the metal structure into a "hatch", and then the "hatch" is jettisoned to clear the ejection path. This technology is used in B-1B and B2. This paper uses a metal pad to simulate the top of an aircraft cockpit. The relationship between the capacity of the cutting device and the thickness of the metal structure, the effect of shock noise on the crew in the course of cutting, and the damage protection of the crew from the explosive remainder are analyzed and studied by test. The effect of shock noise on the crew in the course of cutting is compared with the requirements of national military standards. This research can provide some groundwork for future engineering application of explosive cutting.
Key words： ejection seats; hatches; explosive; cutting; shock noise
GUAN Huanwen , ZHANG Xu , FENG Wenchun , ZHU Yongfeng . Technology of Explosive Cutting to Clear Ejection Path[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(1) : 52 -57 . DOI: 10.7527/S1000-6893.2013.0007
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