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 Wind speeds up to 65 mph 30ft long test section 21ft wide 26ft tall

Project Review

Tunnel Details Pressure sensitive floor for calculating trucks drag coefficient.

Smoke wand for flow visualization

Rotating floor panel to test various angles of attack

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

Provide these requirements while maintaining negligible aerodynamic impact to test region

Delivery of final product by June,16th

Modified Scope• Design

Complete System• Build Roller Box

Original Scope

• Design Complete System• Build Complete

System

General Scope Modification

Concept Design

Horizontal Rail

Smoke Wand

Vertical Rails

Horizontal Carriage

Wind Tunnel Wall

Vertical Carriages

Drive MotorWand Support Rollers

Horizontal motion Vertical motion Tunnel seal

Final Detailed Design

Horizontal motionLinear actuator • Pre-fabricated

Roller box• Allows the smoke wand to move in

and out of the tunnel while being supported

Vertical motion

Lifting motor• Drive system

• 700 lb/in • 10 ft/min• 1.5 hp

• Ball screws• 1” X 0.5” (OD X Pitch)• 21’ Long

Trolley• Designed with simple

fabrication and installation in mind

Tunnel sealRolling shutters • Custom fit shutters to prevent pressure

from escaping from the wind tunnel

Roller Box• Roller box components– Flat Roller Beam (2X)– Angular Roller Beam (2X)– Rubber Roller Wheel (16X)– Roller Housing– Roller Clamps-Upper and Lower

Roller Box

Roller Box• Stability– Four sets of rollers– Sixteen points of contact

• Adjustability– Two adjustable set

screws/roller assembly

• Angel variation – Upper and lower

brackets are loosened to rotate

Final Design Progress• Horizontal motion

(completion 6/6/2012)– Linear actuator– Roller box (65% complete

fabrication)• Vertical motion (completion

5/30/2012)– Trolley – Lifting motor (70% complete

design)• Tunnel seal (completion

5/30/2012)– Rolling shutters (70%

complete design)

Questions