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Vince Teixeira 7 February 2008 Structures Nose Cone Design/Heating Analysis

Vince Teixeira 7 February 2008 Structures Nose Cone Design/Heating Analysis. Heat Analysis. Stagnation-Point Heat-Transfer Rate Ref: Methods for Analysis of Spacecraft Preliminary Design by Prof. Steven P. Schneider Uses velocity profile provided by Trajectory code ver 3.2

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Vince Teixeira 7 February 2008 Structures Nose Cone Design/Heating Analysis

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  1. Vince Teixeira7 February 2008StructuresNose Cone Design/Heating Analysis AAE 450 Spring 2008
  2. Heat Analysis Stagnation-Point Heat-Transfer Rate Ref: Methods for Analysis of Spacecraft Preliminary Design by Prof. Steven P. Schneider Uses velocity profile provided by Trajectory code ver 3.2 Code help from Jason Darby (Aerothermodynamics) Heating rate at stagnation point is a function of wall enthalpy to total enthalpy Heating rate integrated over time will be used to determine maximum temperature of nose cone AAE 450 Spring 2008 Structures
  3. Nose Cone Model CATIA model uses power-law body to determine mass/Inertia matrix for specific materials Input: Nose radius (rn) and material properties Future Work Expand code to determine temperature of nose cone during ascent Will determine thickness/mass of nose cone needed Test CAD model under pressure loads AAE 450 Spring 2008 Structures
  4. Backup Slides – Heating Analysis AAE 450 Spring 2008 Structures
  5. Backup Slide – CATIA Measurement CATIA provides: Volume Area Mass Center of Gravity coords. Inertia Matrix Inc. Principal axes and products of inertia Spline length For a material with specified properties AAE 450 Spring 2008 Structures
  6. Backup Slides – Mass/Inertia Matrix Center of Gravity located at 64% of nose cone length (0.64*L) - Measured from nose cone tip AAE 450 Spring 2008 Structures
  7. Backup Slides - Equations Power-law body: Absolute velocity: Total enthalpy: Heating Rate: AAE 450 Spring 2008 Structures
  8. References Schneider, Steven P., “Methods for Analysis of Preliminary Spacecraft Design,” AAE 450, Spacecraft Design, Purdue University Trajectory code written by Trajectory group Stagnation heating code written by Jason Darby and Vince Teixeira AAE 450 Spring 2008 Structures
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