1. NPCG
SpaceForce intends to alleviate the access barrier that rural residents face when it comes to healthcare
services by transporting blood samples, medicine, and vaccines to and from rural healthcare facilities.
Mission
The SpaceForce One
Cody Foss, Colfax Putt, Ernesto Ramirez, Yuhan Roh, and Benjamin Ye
Purdue University, West Lafayette, IN 47906
Aerodynamics
Vertical Takeoff
Transition
Climb
Cruise
Vertical Landing
Transition
Descent
61 m (200 ft)
15 m (50 ft)
0 m (ft)
40235 m (25 miles)
Propulsion
APC 15x10E
Sunnysky 3525-520kv
YEP 100A (2~6S) SBEC Speed Controller
Turnigy 3000mAh 4S 40C Lipo Pack
Cruise Speed 22.352 m/s
Cruise Current On 4s 17.6 Amps
Motor Cruise Efficiency 68%
Propeller Cruise Efficiency 74%
Total Cruise Efficiency 50%
Number of Motors 4
Takeoff and Landing Factor 120% (90 seconds of Vertical Flight)
Safety Overhead 20%
Battery Requirements 12 Amp Hour (4 x 3000 mAh)
Battery Mass Fraction 0.176%
MH106 Airfoil
Wing Characteristics
Sweep 25 degrees
Taper None
Dihedral None
Aspect Ratio 4.71
Wing Wetted Area 1.41 m2
Reference Area 0.698 m2
Thickness 0.05071 m
Span 1.79 m
Chord 0.388 m
Wing Drag 5.43 N
CL, cruise 0.35
αcruise 5 degrees
CL, max 1.06
αmax 18.5 degrees
CM, α -0.0055
CM vs α
Structures
Internal Structure
Stability and Control
V-n Diagram (shaded area = envelope)
Bending Moment Distribution at αmax and Vcruise
Lift Distribution at αmax and Vcruise
Longitudinal
Modes
Short Period Stable
Phugoid Stable
Lateral
Modes
Roll Damping Stable
Dutch Roll Unstable
Spiral Unstable
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0.12
-15 -10 -5 0 5 10 15 20
CM
α [deg]
CM vs α
No Elevon Deflection (Clean)
Positive Elevon Deflection (Trimmed for Cruise)
αeq = αcruise
Trimming Aircraft for Longitudinal Static Stability in Cruise
Flight Controller Orientation
Cruise
Mode
VTOL
Mode
Natural Stability
Center of Gravity and Neutral Point Location
Datum (0 m) Nose of Aircraft
XCG 0.264
XCG 0.298
Static Margin 8.763 %MAC
Airfoil Characteristics
Camber 1 %
Thickness 13.07%
Pitching Moment Zero
XFLR5 Wing Model
CL vs CD
CL/CD vs α
CL vs α
Vertical Takeoff and Landing (VTOL) Cruise
Configuration A Configuration B
The SpaceForce One is a tailsitter aircraft that flies like a quadcopter
in Configuration A and like a fixed-wing airplane in Configuration B.
The aircraft is 3D additive manufactured, with the exception of the
structural skeleton seen in the Structures section of this poster. It is
designed to cruise at 50 mph with an endurance of about 30 minutes.
Aircraft Overview
![NPCG
SpaceForce intends to alleviate the access barrier that rural residents face when it comes to healthcare
services by transporting blood samples, medicine, and vaccines to and from rural healthcare facilities.
Mission
The SpaceForce One
Cody Foss, Colfax Putt, Ernesto Ramirez, Yuhan Roh, and Benjamin Ye
Purdue University, West Lafayette, IN 47906
Aerodynamics
Vertical Takeoff
Transition
Climb
Cruise
Vertical Landing
Transition
Descent
61 m (200 ft)
15 m (50 ft)
0 m (ft)
40235 m (25 miles)
Propulsion
APC 15x10E
Sunnysky 3525-520kv
YEP 100A (2~6S) SBEC Speed Controller
Turnigy 3000mAh 4S 40C Lipo Pack
Cruise Speed 22.352 m/s
Cruise Current On 4s 17.6 Amps
Motor Cruise Efficiency 68%
Propeller Cruise Efficiency 74%
Total Cruise Efficiency 50%
Number of Motors 4
Takeoff and Landing Factor 120% (90 seconds of Vertical Flight)
Safety Overhead 20%
Battery Requirements 12 Amp Hour (4 x 3000 mAh)
Battery Mass Fraction 0.176%
MH106 Airfoil
Wing Characteristics
Sweep 25 degrees
Taper None
Dihedral None
Aspect Ratio 4.71
Wing Wetted Area 1.41 m2
Reference Area 0.698 m2
Thickness 0.05071 m
Span 1.79 m
Chord 0.388 m
Wing Drag 5.43 N
CL, cruise 0.35
αcruise 5 degrees
CL, max 1.06
αmax 18.5 degrees
CM, α -0.0055
CM vs α
Structures
Internal Structure
Stability and Control
V-n Diagram (shaded area = envelope)
Bending Moment Distribution at αmax and Vcruise
Lift Distribution at αmax and Vcruise
Longitudinal
Modes
Short Period Stable
Phugoid Stable
Lateral
Modes
Roll Damping Stable
Dutch Roll Unstable
Spiral Unstable
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0.12
-15 -10 -5 0 5 10 15 20
CM
α [deg]
CM vs α
No Elevon Deflection (Clean)
Positive Elevon Deflection (Trimmed for Cruise)
αeq = αcruise
Trimming Aircraft for Longitudinal Static Stability in Cruise
Flight Controller Orientation
Cruise
Mode
VTOL
Mode
Natural Stability
Center of Gravity and Neutral Point Location
Datum (0 m) Nose of Aircraft
XCG 0.264
XCG 0.298
Static Margin 8.763 %MAC
Airfoil Characteristics
Camber 1 %
Thickness 13.07%
Pitching Moment Zero
XFLR5 Wing Model
CL vs CD
CL/CD vs α
CL vs α
Vertical Takeoff and Landing (VTOL) Cruise
Configuration A Configuration B
The SpaceForce One is a tailsitter aircraft that flies like a quadcopter
in Configuration A and like a fixed-wing airplane in Configuration B.
The aircraft is 3D additive manufactured, with the exception of the
structural skeleton seen in the Structures section of this poster. It is
designed to cruise at 50 mph with an endurance of about 30 minutes.
Aircraft Overview](https://image.slidesharecdn.com/projectposter-191209181909/85/Senior-Design-Project-poster-1-320.jpg)
