https://ntrs.nasa.gov/search.jsp?R=19770010201 2020-03-22T10:22:21+00:00Z NASA CR-145136 SCOUT NOZZLE DATA BOOK by S. Shields DECEMBER 1975 Prepared Under Contract No. NAS1-12500 Task R-52 by VOUGHT CORPORATION Dallas, Texas for NASA National Aeronautics and SpaceAdministration W-NAASTJ FACILITY s cQ INPUT BRANCh A N77-17144 SCOUT NOZZLE DATA BOOK By S. Shields (NASA-CR-145136) SCOUT NOZZIE,DTA BOOK N77-17144 jVought Corp., Dallas, Tex.) 318 p BC: A14/M A01 CSC 21H Un c-las G3/20 13832 Prepared Under Contract No. NASl-12500 Task R-52 by VOUGHT CORPORATION Dallas, Texas for NJASA National Aeronautics and Space Administration 4 REPRODUCEDBy - ' NATIONAL TECHNICAL INFORMATION SERVJCE Us- DEPARTMEMJOFCOMMERCE , PRIINGFIELD,-VA. 22.161 FOREWORD This document is a technical program report prepared by the Vought Systems Division, LTV Aerospace Corporation, under NASA Contract NAS1-IZ500. The program was sponsored by the SCOUT Project Office of the Langley Research Center with Mr. W. K. Hagginbothom as Technical Monitor. The author wishes to acknowledge the contributions of Mr. R. A. Hart in the area of Material Process and Fabrication and the SCOUT propulsion personnel in supplying reports and other documentation as well as their efforts in reviewing the various sections of this document. iii Pages i and ii are blank. TABLE OF CONTENTS Page List of Figures .............................................................. viii List of Tables .......................................................... ..... xi Summary .. ................................. :................................. 1 SCOUT NOZZLE DATA Scout Nozzle Data.................................................................3 Introduction ................................................................. ..5 A lgol liA ........................................................... ............ *....7 Background ........................................................7 Perform ance Data ........................................................... 7 Drawings and Specifications .................................................7 Material Description ................. ...................... .............. 8 Fabrication and Process .................................................... 11 T hermal Data ........................................................... 11 Char and Erosion ..................................................... 11 Tem perature Distribution .............................................. 11 Structural A nalysis ....................................................... 12 Loads ............................................................. 12 Environm ent ........................................................ 13 Factors of Safety..................................................... 13 Results of Analyses ................................................... 13 Estimated Accuracy of the Algol IlIA Nozzle Analysis ........................ 14 Problem A reas........................................................... 14 Castor IIA ..................................................................45 Background .............................................................45 Perform ance Data ........................................................45 Drawings and Specifications ................................................45 Material Description ......................................................45 Fabrication and Process .................................................... 46 Therm al Data ........................................................... 47 Char and Erosion.....................................................47 Temperature Distribution .............................................. 47 Structural Analysis .......................................................48 Loads .............................................................48 Factors of Safety..................................................... 48 Results of Analyses ................................................... 49 Preceding page blank V TABLE OF CONTENTS (Continued) Page Estimated Accuracy of the Castor IIA Nozzle Analysis ........................49 Problem A reas ........................................................... 50 Antares I IA................................................................. 75 Background ............................................................. 75 Performance Data ........................................................ 75 Drawings and Specifications ................................................ 75 Material Description ...................................................... 75 Fabrication and Process.................................................... 77 Therm al Data ........................................................... 77 Temperature Distribution .............................................. 77 Structural A nalysis ....................................................... 78 Loads ............................................................. 79 Factors of Safety........................ ............................. 79 Results of Analyses ................................................... 79 Estimated Accuracy of the Antares IIA Nozzle Analysis ....................... 82 Problem A reas ........................................................... 83 A ltair IIIA ................... .............................................109 Background ............................................................ 109 Performance Data ....................................................... 109 Drawings and Specifications ............................................... 109 Material Description ...................................... ............... 109 Fabrication and Process.................................................... 111 Thermal.Data ........................................................ 111 Char and Erosion .................................................... 111 Temperature Distribution ............................................. 111 Structural Analysis ....................................................... 112 Loads ............................................................ 112 Factors of Safety.................................................... 113 Results of A nalyses .................................................. 113 Parametric Variance Study ............................................ 114 Estimated Accuracy of-the Altair IlIA Nozzle Analysis.....................114 Problem A reas .............................................................. 115 TRIDENT NOZZLES DATA Trident Nozzles Data ......................................................... 145 Introduction .............................. .............................. 147 Nozzle Environment ..................................................... 148 vi TABLE OF CONTENTS (Continued) Page Material Selection ............................. ......................... 149 Stationary Shell. ....................... 149 Stationary Shell Insulation ............................................ 150 Exit Cone ......................................................... 150 Exit Cone Compliance Ring ........................................... 151 Nozzle Inlet Insulation ................................................ 152 Throat Insert ......................................................... 152 30" Motor Materials Evaluation Matrix ................................... 153 Trident Nozzle Reliability .... ............................................ 153 Material Properties ...................................................... 155 Application of Trident Design Results to SCOUT Motor Nozzle Components ......... 156 Introduction .............................................. ........ 156 Accuracy of Typical Solid Propellant Motor Nozzle Analyses .................. 157 XLDB Environment ................................................. 158 Recommendations for Future Improvements ............................. 159 Inserts ........................................................ 159 Retainer Rings.................................................. 160 Exit Cone Liner................................................. 161 REFERENCES .............................................................189 APPENDIX A Summary of Phase I Study ....................................... A-1 APPENDIX B Summary of Phase II Study ....................................... B-1 APPENDIX C Antares 111B Motor Nozzle Description ............................... C-1 vii LIST OF FIGURES Figure Title Page 1 Algol liA Nozzle Geometry ... 17 2 Algol liA Nozzle Materials . • . 18 3 Algol liA Pressure vs Time ...... ......... 19 4 Algol liA Fabrication and Inspection..... ... 20 5 Ablation and Char Profiles ....... ..... ... 22 6' Exit Cone Temperatures at Station E20... .... 23 7 Exit Cone Temperatures at StationE30 . ....... 24 8 Exit Cone Temperatures at Station E50 .... ..... 25 9 Exit Cone Temperatures at Statior E60. .. 26 10 Insert Temperatures atStation TI0....... .. 27 II Insert Temperatures at Station TZO ... 28 12 Insert Temperatures at Station T30 ."..... ... .. 29 13 Fwd Insulator Temperatures at Station IZ0 ...... 30 14 Fwd Insulator Temperatures atStation 140 . 31 15 Fwd Insulator Temperatures at Station 170 . 32 16 Algol IIIA Throat Model ............... .... 33 17 Nozzle Proof Test and Leak Check Arrangement, 34 18 Castor IIA Nozzle Geometry ..... .... .. 51 19 Castdr IIANozzle Materials ...... ......... 52 20 Castor IIA Pressure vs Time ..... ........ ... 53 21 Castor IIA Fabrication and Inspection ... ..... .. 54 22 Char and Erosion