Supersonic Wind and Supersonic Wind and Imaging Flow TunnelImaging Flow Tunnel
SWIFTSWIFT
David McNeillDavid McNeillCharles MurphyCharles MurphyMatthew OsbornMatthew OsbornDavid SpringerDavid Springer
Kendria AltKendria AltJoshua ClementJoshua Clement
Shannon FortenberryShannon FortenberryKatelynn GreerKatelynn Greer
Interim AssignmentInterim Assignment
ContentsContents
Overview of ObjectivesOverview of ObjectivesOverview of RequirementsOverview of Requirements Unchanged RequirementsUnchanged Requirements Updated RequirementsUpdated Requirements Requests for ActionRequests for Action
System DesignSystem DesignPrototyping ResultsPrototyping Results Visualization PrototypeVisualization Prototype Tunnel PrototypeTunnel Prototype
Overview of ObjectivesOverview of Objectives
Supersonic Wind Tunnel and Flow Supersonic Wind Tunnel and Flow Visualization SystemVisualization System
Operable by Undergraduate Engineering Operable by Undergraduate Engineering StudentsStudents
Mach 1.5 – 3 in 0.5 IncrementsMach 1.5 – 3 in 0.5 Increments
Accuracy of Mach ±0.05Accuracy of Mach ±0.05
Customer: Dr. Brian ArgrowCustomer: Dr. Brian Argrow
Unchanged RequirementsUnchanged Requirements
SpeedsSpeeds Mach 1.5 - 3.0Mach 1.5 - 3.0 ±0.05±0.05
Steady State Run TimeSteady State Run Time 5 sec5 sec
Lab SessionLab Session 1 run in 30 min1 run in 30 min Operable in temperatures of Operable in temperatures of 2020oo - 80 - 80oo F F
VisualizationVisualization Used for Mach verificationUsed for Mach verification Must see aerodynamic Must see aerodynamic phenomena at front and back phenomena at front and back of test objectof test object
Test SectionTest Section Area ≥ 1” x 0.25”Area ≥ 1” x 0.25” Test 3 objects at all speedsTest 3 objects at all speeds
Updated RequirementsUpdated Requirements
Old RequirementOld Requirement New RequirementNew Requirement ReasonReason
Lab SessionLab Session12 Runs without changing 12 Runs without changing tankstanks
6 Runs without changing 6 Runs without changing tankstanks
Too many tanks to Too many tanks to manifoldmanifold
Volume < 30” x 42” x 36”Volume < 30” x 42” x 36”
Weight < 100 lbs/cart topWeight < 100 lbs/cart top
2 cart tops available2 cart tops available
Modified ITLL lab aartModified ITLL lab aart
Movable by Trudy SchwartzMovable by Trudy Schwartz
Accommodation of Accommodation of settling tank and optical settling tank and optical BenchBench
OperationOperationComputer controlled start Computer controlled start and stopand stop Manual valve start and stopManual valve start and stop Cost of electric and Cost of electric and
pneumatic valvespneumatic valves
Requests for ActionRequests for Action
Request: Incorporate a safety regime that Request: Incorporate a safety regime that includes hiring a licensed, insured, PE to includes hiring a licensed, insured, PE to assist with settling tank design.assist with settling tank design. Requestor: Matt RhodeRequestor: Matt Rhode
Resolution: Hired Charles Torres P.E. and Resolution: Hired Charles Torres P.E. and Jon Simmons P.E. of Mayo Industries Inc..Jon Simmons P.E. of Mayo Industries Inc..
System DesignSystem DesignEach bullet will be discussed individually in CDREach bullet will be discussed individually in CDR
Tunnel Sub-SystemTunnel Sub-System To Settling Tank To Settling Tank
ElementsElementsLinkagesLinkagesValveValveRegulatorRegulatorManifoldManifold
Settling TankSettling Tank From Settling Tank From Settling Tank
ElementsElementsLinkagesLinkagesValveValveNozzle / Piping InterfaceNozzle / Piping InterfaceNozzle and Test SectionNozzle and Test Section
Nozzle DesignNozzle Design
Visualization Sub-SystemVisualization Sub-System Light SourceLight Source Light Path ElementsLight Path Elements
CondensorCondensorLenseLenseMirrorMirrorKnife EdgeKnife EdgeCapture DeviceCapture DeviceComputer InterfaceComputer Interface
Structural ElementsStructural ElementsMountsMountsEncasingEncasing
System IntegrationSystem Integration Cart ModificationsCart Modifications
ReinforcementReinforcementCastersCasters
Sound SuppressionSound Suppression
System DesignSystem Design
*To be replaced with a solid model
4 Commercial
Tanks
Settling Tank
Nozzle
Test Section
Light Source
Lens
ComputerSensorsCapture Device
Manual Valve
Manual Valve
Lens
Knife Edge / Filter
Manifold
Regulator
Iris
•Assumptions•Adiabatic, Polytropic,
Expansion
•Commercial Tank Specs
•8.5” diameter•50” height•2000 psi
Settling Tank OptimizationSettling Tank Optimization
2211 VPVP
•Conclusions•Settling tank: 4 ft3 at 450 psi for Mach 2 •8 tanks required for 12 runs at Mach 2•Pressure increases to 1000 psi (still 4 ft3) for Mach 3
Contours: Number of Tanks for 12 runs at Mach 2
Considered dividing 4 Considered dividing 4 ftft33, equally, among as , equally, among as many as 7 smaller many as 7 smaller volume tanksvolume tanksAssumptionsAssumptions
Vol: 4ftVol: 4ft33
Hemispherical end Hemispherical end capscaps
ASME Code thicknessASME Code thickness Carbon Steel of Carbon Steel of
nominal propertiesnominal properties
Settling Tank OptimizationSettling Tank Optimization
ConclusionsConclusions Small weight savings from increasing number of tanksSmall weight savings from increasing number of tanks Increased complexity negates savingsIncreased complexity negates savings 1 Tank1 Tank
Inside Diameter: 19 inInside Diameter: 19 inLength: 34 inLength: 34 in
Electrical InterconnectsElectrical InterconnectsMinimal, and may be assimilated in other slides for CDRMinimal, and may be assimilated in other slides for CDR
Start
Folder Name and Path
Wait Time between
images (t ms)
Image Name (i)
Signal WebCam to Take Image (i)
Save Image (i)
t ms Wait
(i)
Stop
ComputerSettling Tank
Sensors
Capture Device
Computer Program Block DiagramComputer Program Block Diagram
PowerSteady State
Capture Device
Visualization PrototypeVisualization Prototype
Visualization PrototypeVisualization PrototypeSetupSetup
Setup in Electrical Engineering optical labSetup in Electrical Engineering optical labPartsParts
Light SourceLight Source IrisIris 2 Achromatic Lenses2 Achromatic Lenses 45 degree mirror45 degree mirror Razor blade knife edge and color filterRazor blade knife edge and color filter 3 camera selections3 camera selections
VisualsVisuals Wedge CouponWedge Coupon CandleCandle Cold SprayCold Spray
Visualization PrototypeVisualization PrototypeResultsResults
Sony vx2000
720 x 486
Continuous Zoom, Focus, Iris
Sony Cybershot
2738 x 1825
Stepped Focus
Continuous Zoom
HP WebCam
480 x 640
Manual Focus
Visualization PrototypeVisualization PrototypeConclusionsConclusions
Lens array (zoom, focus iris) is needed to properly focus Lens array (zoom, focus iris) is needed to properly focus and utilize the full frame.and utilize the full frame.640 x 480 resolution is the minimum to sufficiently 640 x 480 resolution is the minimum to sufficiently measure the angle.measure the angle.Longer focal length for the secondary is desired.Longer focal length for the secondary is desired.
L shape (with mirror) to compensate for longer focal length.L shape (with mirror) to compensate for longer focal length.
Very dim light source needed to avoid overpowering the Very dim light source needed to avoid overpowering the density gradient.density gradient.Color filter needed to be very dark.Color filter needed to be very dark.Knife edge work best when cutting of 2/3 of focal point.Knife edge work best when cutting of 2/3 of focal point.High knife edge accuracies needed.High knife edge accuracies needed.
Tunnel PrototypeTunnel Prototype
Manufacture a sealed test section and the Manufacture a sealed test section and the adapter to the system’s NPT pipe.adapter to the system’s NPT pipe. Learn the intricacies of our manufacturing Learn the intricacies of our manufacturing
method, including required man hours.method, including required man hours. Ensure our design is properly thought out and Ensure our design is properly thought out and
easily used by undergraduate students.easily used by undergraduate students.
Hydrostatically pressure test.Hydrostatically pressure test. To verify safe design up to a SF of 1.5.To verify safe design up to a SF of 1.5. Will be performed after CDR.Will be performed after CDR.
Tunnel PrototypeTunnel Prototype
The two pieces are held together with 4-1/2” bolts using the two square flanges.
The left piece is an adapter that converts 1” NPT pipe to the 3” diameter necessary for the test section.
The right piece is the test section which is created using plexiglass and steel.
The end of the test section is sealed for hydrostatic testing of our design before the throat (where the pressure is the greatest).