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Evaluation of Solid Rocket Motor Component Data Using a Commercially Available Statistical Software PackageCommercially available software packages today allow users to quickly perform the routine evaluations of (1) descriptive statistics to numerically and graphically summarize both sample and population data, (2) inferential statistics that draws conclusions about a given population from samples taken of it, (3) probability determinations that can be used to generate estimates of reliability allowables, and finally (4) the setup of designed experiments and analysis of their data to identify significant material and process characteristics for application in both product manufacturing and performance enhancement. This paper presents examples of analysis and experimental design work that has been conducted using Statgraphics®(Registered Trademark) statistical software to obtain useful information with regard to solid rocket motor propellants and internal insulation material. Data were obtained from a number of programs (Shuttle, Constellation, and Space Launch System) and sources that include solid propellant burn rate strands, tensile specimens, sub‐scale test motors, full‐scale operational motors, rubber insulation specimens, and sub‐scale rubber insulation analog samples. Besides facilitating the experimental design process to yield meaningful results, statistical software has demonstrated its ability to quickly perform complex data analyses and yield significant findings that might otherwise have gone unnoticed. One caveat to these successes is that useful results not only derive from the inherent power of the software package, but also from the skill and understanding of the data analyst.
Document ID
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Stefanski, Philip L.
(Jacobs Engineering and Science Services and Skills Augmentation Group (ESSSA) Huntsville, AL, United States)
Date Acquired
August 24, 2015
Publication Date
June 1, 2015
Subject Category
Computer Programming And Software
Quality Assurance And Reliability
Report/Patent Number
Meeting Information
Meeting: JANNAF Propulsion Meeting/10th Modeling and Simulation/8th Liquid Propulsion 7th Spacecraft Propulsion Joint Subcommittee
Location: Nashville, TN
Country: United States
Start Date: June 1, 2015
End Date: June 5, 2015
Sponsors: Department of the Navy, NASA Headquarters, Department of the Army, Department of the Air Force
Funding Number(s)
Distribution Limits
Public Use Permitted.
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