1 propulsion pdr ashley brawner matt negilski neelam datta mike palumbo xing huang chris selby jesse...
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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?