1. AAE 450 Spring 2008 Molly Kane January 17, 2008 Interface Structures, Aero- and Thermo- Loading Nose Cone Materials

2. AAE 450 Spring 2008 Sizing  Size of nose cone based on historical data from Vanguard rocket Structures  L total – 12.64 m  Radius – 0.3344 m  L nose_cone – 1.071 m  Surface Area – 1.178 m

3. AAE 450 Spring 2008 Materials  Aluminum – low heat applications, relatively inexpensive  Titanium – strong, high temperature usage  Magnesium Alloys – low density, low heat applications  Molybdenum – very high heat capabilities, maintains strength  Carbon-Carbon – ceramic, light, very expensive  Hafnium Diboride – ceramic, light, very high heat capabilities Future Work  Ceramics, combinations of materials, aero-thermal implications, pricing Structures

4. AAE 450 Spring 2008 Backup Slides Structures MaterialTensile Strength (kPa)Density (g/cm^3)T_melt (deg C) Aluminum234.42.68649 Titanium896.34.511649 Magnesium Alloys303.41.8525 Molybdenum689.510.222622 Carbon-Carbon1.52000-7000 Hafnium Diboride10.53250

5. AAE 450 Spring 2008 References Anonymous, “Titanium, Commercially Pure”, Aerospace Structural Metals Handbook, Setlak/CINDAS, West Lafayette, IN, 2002. Anonymous, “Magnesium, Mg-6Al-1Zn”, Aerospace Structural Metals Handbook, Setlak/CINDAS, West Lafayette, IN, 2002. Anonymous, “Aluminum, Al-2.5Mg-0.25Cr”, Aerospace Structural Metals Handbook, Setlak/CINDAS, West Lafayette, IN, 2002. Anonymous, “Carbon-Carbon Composite Thermal Protection System for Spacecraft from NextTechs Technologies,” NextTechs Technology c. 2000- 2008, [http://www.azom.com/details.asp?ArticleID=3904. Accessed 1/16/08] Buckman, R.W., “Molybdenum, Commercially Pure”, Aerospace Structural Metals Handbook, Setlak/CINDAS, West Lafayette, IN, 2002. Ewig, R. Sandhu, J. Shell, C.A., Schneider, M.A., Bloom, J.B., Ohno, S., “The K2X: Design of a 2 nd Generation Reusable Launch Vehicle,” 36 th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Huntsville, AL, 2000, pp. 11-12. Klemans, B., “The Vanguard Satellite Launching Vehicle” The Martin Company, Engineering Report No. 11022, April 1960. Structures