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http://dx.doi.org/10.5139/JKSAS.2010.39.1.90

The Rubber Performance Evaluation for Kick Motor Flexible Seal  

Kim, Byung-Hun (항공우주연구원 추진제어팀)
Kwon, Tae-Hoon ((주)한화 대전 공장)
Cho, In-Hyun (항공우주연구원 추진제어팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.1, 2011 , pp. 90-95 More about this Journal
Abstract
A Kick Motor, KSLV-I second stage propulsion system, utilizes a flexible seal for pitch and yaw axis controls during combustion. A flexible seal consists of the alternate laminate of rubber and composite reinforcement between forward and aft rings. A Kick Motor nozzle is rotated by the shear deformation of rubber layers. Consequently, the development of rubber, which is appropriate to the usage condition of flexible seal, is very important. A tensile test, QLS test (shear modulus and failure shear stress), and aging test have been carried out to confirm the performance of rubber developed. Test results show that the shear modulus of rubber are 0.4310 ~ 0.4997MPa and the failure shear stress is more than 2.5MPa.
Keywords
Movable Nozzle; Flexible Seal; Rubber; Shear Modulus;
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