Click to Add Title Click to Add Title 16.00 CDR: Spring, 2004 16.00 CDR: Spring, 2004
Mar 31, 2015
Click to Add TitleClick to Add Title
16.00 CDR: Spring, 200416.00 CDR: Spring, 2004
The TeamThe TeamAlex Coso
Fred Gay
Dan Cunningham
Val Lugo
Final DesignFinal Design
Drawings courtesy of Dan Cunningham
Final DesignFinal Design
Drawings courtesy of Dan Cunningham
Final DesignFinal Design
Drawings courtesy of Dan Cunningham
Scale DrawingsScale Drawings
Drawings courtesy of Dan Cunningham
Scale DrawingsScale Drawings
Drawings courtesy of Dan Cunningham
Scale DrawingsScale Drawings
Drawings courtesy of Dan Cunningham
Structural AnalysisStructural Analysis Structure:Structure: 65g x 1 = 65g65g x 1 = 65g Motors:Motors: 93g x 2 = 186g93g x 2 = 186g Motors:Motors: 269g x 1 = 269g 269g x 1 = 269g Propellers:Propellers: 5.2g x 3 = 15.6g 5.2g x 3 = 15.6g Servos:Servos: 43g x 3 = 129g43g x 3 = 129g Radio Gear:Radio Gear: 46g x 1 = 46g46g x 1 = 46g Batteries:Batteries: 260g x 1 = 260g 260g x 1 = 260g Total Mass:Total Mass: approx. 970.6g approx. 970.6g Payload:Payload: approx. 729.4g approx. 729.4g
Dimensions:Dimensions:Length: 2m Width: 1.25m Height: 1.5mLength: 2m Width: 1.25m Height: 1.5m
Aerodynamic AnalysisAerodynamic Analysis
Helium Required:Helium Required:Lift=ΔρVg=17.15NLift=ΔρVg=17.15N
Assuming two balloons, their radius must Assuming two balloons, their radius must be .53m to generate the necessary liftbe .53m to generate the necessary lift
Thrust must be equal to drag in steady flightThrust must be equal to drag in steady flight
Thrust = Drag = 2.64NThrust = Drag = 2.64N
vv22=2D/ρSC=2D/ρSCD D v=1.5m/sv=1.5m/s
Total course time estimate: 60 to 70 sec.Total course time estimate: 60 to 70 sec.
Control AnalysisControl Analysis
Yaw control is provided by two Yaw control is provided by two oppositely facing, fore and aft oppositely facing, fore and aft mounted small motorsmounted small motors
Pitch control is provided by the third, Pitch control is provided by the third, main drive motor, which pivots about main drive motor, which pivots about a horizontal axisa horizontal axis
Control surfaces will be added if we Control surfaces will be added if we deem them necessary after initial deem them necessary after initial flight testingflight testing