Analysis of a Nulling Yaw Probe ME 450: Computer Aided Engineering Analysis Instructor: Dr. Nema Group members: Billy Holland, Alan Koers, Allison Heying

Objectives  Determine if stress or displacement will negatively affect function of device Study vertical position of motor Study horizontal position of motor Study probe when exposed to air flow

Introduction  Apparatus to observe pressure and flow angle of annular flow in turbine engine  462 project added component to allow for flow yaw angle measurement  Main area of concern is support for motor

Complete Assembly Probe Motor Track Motor Support Housing Rack

Theoretical Background  Solid 92 (Tetrahedral Solid): 10 Nodes, 3-D Space, DOF: UX, UY, UZ  Is the WORKBENCH default element

Model Details: Sub Assembly  Element Type: SOLID92  Elements: 2579  Nodes: 10004

Model Details: Sub Assembly  Model grounded at mounting holes in tracks  Moments applied to motor support mounting holes

Model Details: Yaw Probe  Element Type: SOLID92  Elements: 2964  Nodes: 5859

Model Details: Yaw Probe  Model grounded at probe base  Pressure due to wind speed applied surface of probe

Stress at Vertical Orientation

Displacement at Vertical Orientation

Stress at Horizontal Orientation

Stress at Horizontal Orientation (bottom)

Displacement at Horizontal Orientation

Stress in Probe

Displacement of Probe

Results

Impact Statement  Probe apparatus will be safe for users  Knowledge of flow angle and pressure in turbine engine will allow for improvements

Conclusions  Design will have no problems due to stress or deformation  Factor of safety is at least 40

Questions Sources Finite Element Analysis by Saeed Moaveni Introduction to Fluid Mechanics by Robert Fox Mechanics of Materials by John Dewolf