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Daimler Wind Tunnel Project

Daimler Wind Tunnel Project. Project Review. Capstone Team Andre Nylund Chris Grewell Craig Lechtenberg Fadel Al Jutail Matt Melius Mufeed Yacoub Team Advisor Dr. Raul Bayoán Cal Customer Daimler Trucks North America. Project Review. Tunnel Details 12,000 sq. ft. facility

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Daimler Wind Tunnel Project

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  1. Daimler Wind Tunnel Project

  2. Project Review • Capstone Team • Andre Nylund • Chris Grewell • Craig Lechtenberg • Fadel Al Jutail • Matt Melius • MufeedYacoub • Team Advisor • Dr. Raul Bayoán Cal • Customer • Daimler Trucks North America

  3. Project Review Tunnel Details • 12,000 sq. ft. facility • Wind speeds up to 65 • 30ft long test section 21ft wide 26ft tall

  4. Project Review • Rotating floor panel to test various angles of attack Tunnel Details • Smoke wand for flow visualization • Pressure sensitive floor for calculating trucks drag coefficient.

  5. Project Review Mission Statement: Improve smoke testing methods • Increase the testable area within the wind tunnel • Increase stability of the system • Deliver smoke to location of interest accurately • Electronically controlled system to eliminate human error • Provide these requirements while maintaining negligible aerodynamic impact to test region • Delivery of final product by June,16th

  6. Mile Stone Progress PDS completion – January 30th • Two axis motion • 20’ Horizontal travel • 17’ Vertical travel • Zero residual impact when not in use • Removes itself form wind tunnel completely when not in use • Aerodynamic Profile External and Internal Search – February 17th

  7. External Search • Typically, traversing systems are used to study the airflow behind a test model (ex. pressure probe is downstream of the test subject) Test Subject Pressure Probe Air Flow

  8. External Search • Traversing systems commonly use linear actuators for precise motion control. • Common Applications • Flow field and wake survey • behind test section • Small test sections • scale models etc.

  9. External Search Roof Mounted Traversing Probe Traversing Volume • 3m x 4m x 6m Positional Accuracy • +/- 1mm

  10. External Search Roof Mounted Traversing Probe • full size automotive wind tunnel • downstream probe Traversing Volume • 5m x 12m x 13m Positional Accuracy • +/- 1.5mm

  11. External Search • Floor mounted track • Singly supported • Range of travel dictated by rail length

  12. External Search Linear Actuators Pre-fabricated Sealed Unit Reliable

  13. External Search • Rail and Linear bearing systems • High precision offers accurate placement of carriage

  14. External Search • Motion Control • Stepper Motor • Servo Motors and Drives • Gear Boxes

  15. External Search

  16. Internal Concept: Vertical Floor Rail Z Vertical Rail and Carriage X Smoke wand Wind tunnel wall Horizontal Rails and Carriages Wind Tunnel

  17. Internal Concept: Vertical Floor Rail Horizontal Rail and Carriage Truck profile Wind tunnel wall Wind Tunnel Vertical Rail and Carriage Smoke Wand Z Horizontal Rail and Carriage X

  18. Internal Concept: Cantilever • Possible project scope change Cantilever cable support Wind tunnel wall Vertical Rail and Carriage Horizontal Rail and Carriage Wind Tunnel Z Carbon Fiber Smoke Wand X

  19. Mile Stone Progress PDS completion – January 30th • Two axis motion • 20’ Horizontal travel • 17’ Vertical travel • Zero residual impact when not in use • Removes itself form wind tunnel completely when not in use • Aerodynamic Profile External and Internal Search – February 17th Concept selection – February 22nd • Cantilever Detailed Design– February 22nd to May 18th Fabrication completion – May 31st Product delivery – June 16th

  20. Detailed Design Load Calculations • Gravity on the Horizontal rail • 355N • Gravity on the smoke wand • 107 N • Wind load on the smoke wand • Distributed load of 361N • Moment of 990N*m at wand support rollers • Weight of the entire system Wand Support Rollers Drive Motor Wind Tunnel Wall Vertical Rails Vertical Carriages Wind Tunnel Smoke Wand Z X Horizontal Rail Horizontal Carriage

  21. Detailed Design • Mechanical Component Selection • Horizontal rail and carriage • Vertical rail and carriage • Lifting mechanics • Lifting motors • Structural Design • Vertical rail supports • Baseplate mounting • Structure stabilization

  22. Detailed Design • Control System • Safety • Operational safety • Limit switches • Human interaction • Zero energy state • Vertical motion lockout

  23. Questions

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