Daimler Wind Tunnel Project

AssociatesCapstone Team- Andre Nylund- Chris Grewell- Craig Lechtenberg- Fadel Al Jutail- Matt Melius- Mufeed Yacoub

Team Advisor- Dr. Raul Bayoán Cal

Our CustomersExternal Customers- Daimler Trucks North America

- Matt Markstaller- Carlos Cosme- Bruno Banceu

Internal Customers- Portland State University- Faryar Etesami- Capstone Team

Matt Markstaller

Daimler’s Wind TunnelTunnel Details• The 12,000 sq. ft. facility

can accommodate a full sized Freightliner cab that is mated to a mock-up box trailer.

• Wind speeds up to 65 mph

by 10, 250 hp industrial blower fans.

• 30ft long test section

26 ft

21 ft

Tunnel cross-sectional area of 550 ft2

Daimler’s Wind TunnelTesting Ability• Pressure sensitive floor for

calculating trucks drag coefficient.

• Rotating floor panel to test various angles of attack

• Smoke wand for flow visualization

Current Smoke Testing Methods

• Smoke wand enters test section through hole in side of tunnel• Wand is manually extended to desired position

Issues with Current Smoke Testing Equipment

• Smoke wand placement is limited by the length of the wand

Smoke wand range

Issues with Current Smoke Testing Equipment

• Smoke wand placement is limited by the length of the wand

• Wand is manually held from outside the tunnel then angled into position, requiring extra personal to perform testing

Issues with Current Smoke Testing Equipment

• Smoke wand placement is limited by the length of the wand

• Wand is manually held from outside the tunnel then angled into position, requiring extra personal to perform testing

• Manual control makes repeatable testing of an area difficult

Issues with Current Smoke Testing Equipment

• Smoke wand placement is limited by the length of the wand

• Wand is manually held from outside the tunnel then angled into position, requiring extra personal to perform testing

• Manual control makes repeatable testing of an area difficult

• Flexibility of current wand reduces accuracy of smoke placement during testing

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

PDS Criteria • Two axis motion

– 20’ Horizontal travel– 17’ Vertical travel

PROJECTED AREA

14’

8.5’

TARGET AREA

17’

14.5’

PDS Criteria • 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– 2-4’ separation between support structure and smoke delivery location

(based off structure size)

5.5’

Door Transition

PDS Criteria • 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– 2-4’ separation between support structure and smoke delivery location

(based off structure size)

• Remote controlled electronically – No physical interaction for system to operate

• Accuracy– ± 0.5” Resolution

Mile Stones• Concept selection – February 24th

• Detailed design completion – April 28th

• Fabrication completion – May 31st

• Product delivery – June 16th

Risk• Missing delivery date

• Contractors failure to implement team design

• Non-function product due to design errors

Risk Assessment

Countermeasure - Well thought out PDS and

project plan

- Sufficient documentation and walkthrough installation with design team

- Budget time for design testing and changes

Questions