◆ SpookStack

Table of Contents 1, Introduction. 2. Examples Showing Need for Mode 5 .s.sscccssssssssssssesssessssseccssscssssssnecesscensnecsssecsanecsseesssessans 3 3. Understanding the Mode-5 Failure Respomse......scsssssssssssesscssesscsssneesssneessssunecessnesssaneeesnse 7 3.1 Effects of Mode-5 Shaping Comstants.......sssssseesssesssseesssecsssecssecssnecesnecssneceseessnecesneees 9 3.2 Effects of Shaping Constant on DAMP Resullts......s..ssssssssssessssssessssnesessacecssneecesnnes 9 4. Methodology for Assessing Failure Probabilities.........sessssssssssseesssessssssneeesseesssesesnees 13 4.1 The Parts-Analysis Approach ....ssscsssssssessssseesssessneesssesssnesssscssssscssecssneccanecessessnecesvess 13- 4.2 The Empirical Approach ....scsssecsssescssesssesssssessseesssesssssecsneccssecssuccsssessssecsneessneessecaneees 15 5. Computation of Failure Probabilities..........scsssescsssessseessssecssecsseeesssesssescsnecesnsessneesseersneess 16 5.1 Overall Failure Probability 5.2 Relative and Absolute Probabilities for Response Modes. 5.3 Relative Probability of Tumble for Response-Modes 3 and 4... 6. Shaping Constants Through Simulation 6.1 Malfunction Turn Simulations 6.1.1 Random-Attitude Failures. 6.1.2 Slow-Turn Failures......... 6.1.3 Factors Affecting Malfunction-Turn Results . 6.1.4 Malfunction-Turn Results for Atlas ILAS 6.2 Shaping Constants for Atlas I[AS 6.2.1 Optimum Mode-5 Shaping Constants 6.2.2 Launch-Area Mode-5 Risks... 6.2.3 Effects of Mode-5 Constants on Ship-Hit Contours. 6.2.4 Range Distributions of Theoretical and Simulated Impact: 6.3 Shaping Constants for Delta~GEM 6.3.1 Optimum Mode-5 Shaping Constants.. 6.3.2 Launch-Area Mode-5 Risks 6.4 Shaping Constants for Titan IV....s.sssessssecssssesnscnnsescnsccnsnesenesessecenseensneesanscensennneesnees 65 6.5 Shaping Constants for LLV1......ssssssssssssssscsssessssssseessnecsssecenscesaecsseonsnccssneccneensnessnees 69 6.6 Shaping Constants for Other Launch Vehicles........sssssssessssesseecsseessnsessnescnnsenensnees 72 7. Potential Future Investigations.......ssssecsssecsseecsssersssessnecssncessnessneecsnecesneessneecnnecenecsnneenneses 73 B. SUTMIMATY®...sssessescsssessnecsssscssnsesessecssscesneccsneceaneceanectssecsasecessesssecssnecesnecessccsssessanecanscesscennensnees 74 9/10/96 ii RTI