Reliability and Quality Assurance Experience in Launcher Hold and Release System used in GSLV

Defence Science Journal

P. Purushothaman¹  J. Singaravelu¹  K.G. Pillai¹  Sojan Thomas¹ 

[1] Vikram Sarabhai Space Centre, Thiruvanathapuram

关键词: Launcherholdand release system;    system reliability;    quality assurance;    GSLV;    single-point failure modes;    strap-on motors;    failure mode effects and criticality analysis;    FMECA;    reliability and quality &;    surance;    RCQA;    geosynchronous satellite launch vehicle;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

The launcher hold and release system(LHRS) was successfully used, for the first time, for GSLV-DImissionafter thorough test and evaluation, in line with reliability and qualityassurance (R&QA) requirements. Various R&QA techniques areapplied to make LHRS failure-free. Failure mode effect and criticalityanalysis (FMECA) was used as a tool for identifying critical failuremodes. Single-point failure modes (SPFMs) identified from FMECA arestrengthened by design modifications and the same are verified bytesting. Testing philosophy is tailored to have more number of tests atthe system level. Capability demonstration tests and failure modesimulation tests were carried out during system qualification phase.Acceptance tests are done on the flight hardware at launch pad todemonstrate better confidence on the system. This paper illustrates howR&QA techniques complimented and added value at different stages inthe development cycle of LHRS, by means of few case studies. Testingmethodologies adopted and problems encountered during the developmentand qualification phases are described in brief. Various problemssurfaced during preparation for flight are also discussed.

【 授权许可】

Unknown