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Propulsion PDRPropulsion PDR

Ashley Brawner Matt Negilski

Neelam Datta Mike Palumbo

Xing Huang Chris Selby

Jesse Jones Tara Trafton

AAE451: Balsa to the Wall

Team 2

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Presentation OverviewPresentation Overview

Why a Ducted Fan? Pros Cons

Performance Requirements Thrust Weight Power

Ducted Fans Electric Motors Batteries Duct Design

Fuselage Integration

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Why a Ducted Fan?Why a Ducted Fan? Pros

No Propeller Tip Downwash

Direct Drive

Hand Launch / Belly Landing

Higher Static Thrust

Cons

Duct Profile Drag

Cost of Duct

Capable Motor

High RPM

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Performance RequirementsPerformance Requirements

Power Loading 3.0

Weight Estimate 5.42 lb

Power Required 1.8 hp

2ft

lbf

** Preliminary Sizing

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Ducted Fan CandidatesDucted Fan Candidates

Manufacturer Model

Diameter Weight

Max RPM Cost

    [ in ] [ lbs ] [ RPM ] [ $ ]

WeMoTec Midi Fan 3.5 0.231 35,000 $74.95

WeMoTec Mini Fan 480 2.72 0.132 45,000 $53.90

Great Planes Hyperflow 2.23 0.081 49,000 $30.00

VASA VasaFan 65 2.6 0.077 45,000 $60.00

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Electric Motor CandidatesElectric Motor Candidates

Manufacturer Class

Avg. Weight Avg. Cost

    [ lbs ] [ $ ]

Kontronik 400 0.24 $130.00

Kontronik 480 0.31 $130.00

Kontronik 500 0.44 $144.00

Kontronik 600 0.55 $150.00

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Electric Motor DataElectric Motor DataWeMoTec Midi Fan

Kontronik FUN 600 Class

0.00 hp

0.25 hp

0.50 hp

0.75 hp

1.00 hp

1.25 hp

1.50 hp

1.75 hp

2.00 hp

4.8 Volts 7.2 Volts 9.6 Volts 12.0

Volts

14.4

Volts

16.8

Volts

19.2

Volts

21.6

Volts

24.0

Volts

26.4

Volts

28.8

Volts

31.2

Volts

33.6

Volts

Voltage

Pow

er

FUN 600-11 FUN 600-13 FUN 600-15 FUN 600-17 FUN 600-18 FUN 600-25 FUN 600-32

http://www.kontronik.com/index2e.htm

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Electric Motor Data Cont’dElectric Motor Data Cont’dWeMoTec Midi Fan

Kontronik FUN 500 Class

0.00 hp

0.20 hp

0.40 hp

0.60 hp

0.80 hp

1.00 hp

1.20 hp

1.40 hp

4.8 Volts 6.0 Volts 7.2 Volts 8.4 Volts 9.6 Volts 10.8 Volts 12.0 Volts 13.2 Volts 14.4 Volts 15.6 Volts 16.8 Volts 18.0 Volts

Voltage

Pow

er

FUN 500-19 FUN 500-21 FUN 500-24 FUN 500-27 FUN 500-32 FUN 500-38

http://www.kontronik.com/index2e.htm

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Electric Motor Data Cont’dElectric Motor Data Cont’dWeMoTec Mini Fan

Kontronik FUN 400 & 480 Class

0.00 hp

0.20 hp

0.40 hp

0.60 hp

0.80 hp

1.00 hp

6.0 Volts 7.2 Volts 8.4 Volts 9.6 Volts 10.8 Volts 12.0 Volts 13.2 Volts 14.4 Volts 15.6 Volts 16.8 Volts

Voltage

Pow

er

FUN 400-23 FUN 400-28 2002 FUN 400-36 FUN 400-42 FUN 480-28 FUN 480-33 FUN 480-42 FUN 480-47 FUN 480-37

http://www.kontronik.com/index2e.htm

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BatteriesBatteries

Type Voltage Avg. Weight Total Weight Avg. Cost Total Cost

  [ V ] [ lbs ] [ lbs ] [ $ ] [ $ ]

NiMH 1.20 per Cell 0.09 per Cell 2.70$3.00 per

Cell $90.00

NiCd 1.20 per Cell 0.13 per Cell 3.90$2.70 per

Cell $81.00

LiPo 3.70 per Cell 0.13 per Cell 1.30$25.00 per

Cell $200.00

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Propulsion SummaryPropulsion Summary Motor

Kontronik FUN 600–13 Kv = 1300 RPM/V Max Constant Current: 40 A Max # Cells: 30 Max Voltage: 36 V

Battery 30 Cells NiMH @ 1.2V/cell

Speed Controller Kontronik Jazz 55-10-32

Max Surge Current: 70 A Max # Cells: 32 Weight: 0.08 lbs

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Propulsion Summary Cont’dPropulsion Summary Cont’d WeMoTec Midi Fan

Fan Dia: 3.5 in Max RPM: 36,000 Weight: 0.231 lbs

Performance Power: 1.8 hp Static Thrust: 4.86 lbf

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Ducted Fan MeasurementsDucted Fan Measurements

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Duct DesignDuct Design Slightly Converging Inlet

129% of Fan Swept Area Funnel Air into Fan Opposite of Turbo Jet

Straight Outlet

99 % of FSA Promote Flow Opposite of Turbo Jet

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22HubFan DD

FSA

“Ducted Fan Design

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Duct Design Cont’dDuct Design Cont’d

WeMoTec Midi Fan

222

35.74

7.1

4

47.3inFSA

2

2

28.799.0

46.729.1

7.1

47.3

inFSAA

inFSAA

Duct

inD

inD

Outlet

Inlet

Hub

Fan

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Duct Design Cont’dDuct Design Cont’d

2

2

35.7

46.729.1

inFSAA

inFSAA

Outlet

Inlet

Duct Measurements

inD

inD

inD

Fan

Outlet

Inlet

5.3

04.3

47.3

2~3 in ~1 in

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Fuselage IntegrationFuselage Integration Duct Placement

Duct will be integrated on top of fuselage Promote external boundary layer Ingestion

Less drag than mounting a nacelle Room for payload below duct

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Propulsion Cost AnalysisPropulsion Cost Analysis

To Achieve Mission Requirements Motor $ 150.00 Batteries $ 90.00 Ducted Fan $ 75.00 Materials ~$ 50.00 Sum $365.00

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Questions?Questions?