Subsonic Airplane Design

Subsonic Airplane Design Christopher Weyant Joseph Rebolledo COSMOS at UC Davis Cluster 3 August 3, 2006

Presentation Outline ,[object Object],[object Object],[object Object],[object Object]

I. Factors that Allow Airplane Flight ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Lift is Created ,[object Object],[object Object]

How Lift is Created ,[object Object],[object Object],[object Object],[object Object],high pressure low pressure= next high pressure low pressure pressure force pressure force

Lift ,[object Object],[object Object],[object Object],[object Object]

Weight ,[object Object],[object Object],[object Object],[object Object],[object Object]

Weight Considerations ,[object Object],[object Object]

How Thrust is Created ,[object Object],[object Object],[object Object]

Thrust ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Thrust ,[object Object],[object Object],[object Object]

Thrust vs. Efficiency ,[object Object],[object Object],[object Object],[object Object],[object Object]

How Drag is Created ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Center of Pressure ,[object Object],[object Object],[object Object],[object Object]

Center of Mass ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Centers of Mass and Pressure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

II. Useful Non-dimensional Ratios ,[object Object],[object Object],[object Object],[object Object],[object Object]

Mach Number ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Reynolds number ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Aspect Ratio ,[object Object],[object Object],[object Object],[object Object],[object Object]

Coefficient of Lift ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Coefficient of Drag ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

III. Design of Subsonic Airplanes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stalling Velocity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Implications ,[object Object],[object Object],[object Object],[object Object]

Different Types of Wings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Prandtl’s Lifting Line Theory ,[object Object],[object Object],[object Object],[object Object],[object Object]

Implications ,[object Object],[object Object],[object Object]

Prandtl- Glauert Rule ,[object Object],[object Object],[object Object]

Combined ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Equation for Induced Drag ,[object Object],[object Object],[object Object],[object Object],[object Object]

Angle of Attack ,[object Object],[object Object],[object Object]

Ceiling Altitude ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],(R/C) max =( η pr P/W)–[(2/ ρ ∞ )√K/3C D.0 (W/S)] 1/2 *(1.55/(L/D max ))

Implications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Limits on Reducing Drag ,[object Object],[object Object],[object Object],[object Object]

Explanation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Coffin Corner ,[object Object],[object Object],[object Object]

IV. Case Study- Helios ,[object Object],[object Object],[object Object]

Goals for Helios ,[object Object],[object Object]

Significance of Helios ,[object Object],[object Object],[object Object]

Helios Aircraft Statistics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Helios Propulsion Statistics ,[object Object],[object Object],[object Object]

Helios Accomplishes a Goal (2001) ,[object Object],[object Object],[object Object],[object Object]

Helios Malfunctions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object]

Acknowledgements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bibliography ,[object Object],[object Object],[object Object],[object Object]

Subsonic Airplane Design

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