Lab 6 Submission Sheet

Keep answers as short as possible while still meeting specifications. Submit as a PDF.

Team Number:

Team Member Names:

## Measured Calibration Curve for Wind Tunnel Fan Speed vs. Air Velocity

Effort:

• Present

Complete:

• Calibration curve shows correct numbers.
• Calibration curve shows correct regression line and uncertainty bounds.

## Plots of Drag Forces on Cylindrical Objects

This section calls for eight total graphs:

• Measured and Simulated Drag force vs. Reynolds number for Nose 1, 2, and 3
• Measured and Simulated Coefficient of Drag vs. Reynolds number for Nose 1, 2, and 3
• Simulated velocity profile of Nose 1, 2, and 3
• Simulated pressure contour plot of profile of Nose 1, 2, and 3

Effort:

• Graphs are present for at least one nose cone
• Calibration information, the zero fan speed lift and drag, is reported.
• Reference area used for finding drag coefficients is reported.

Complete:

• All plots show correct values.
  
• Calibration information and reference area are correct.
• Discussion of differences between simulations and measurements lists plausible factors that could cause discrepancies.

## Plots of Drag Forces on Scale Robot Model

This section calls for two total graphs

• Measured and Simulated drag force vs. Reynolds number
• Measured and Simulated drag coefficient vs. Reynolds number

Effort:

• Both graphs are present
• Calibration information, the zero fan speed lift and drag, is reported.
• Reference area used for finding drag coefficients is reported.

Complete:

• All plots show correct values.
  
• Calibration information and reference area are correct.
• Discussion of differences between simulations and measurements lists plausible factors that could cause discrepancies.
• Explanation of how similitude lets us use a scale model of the robot in the wind tunnel and a full-sized model of the robot in simulated water flow.

## Plots of Lift and Drag for Flat Plate and NACA Airfoils at Different Angles of Attack

This section calls for four total graphs.

• Flat plate and NACA airfoil lift force vs. Reynolds number
• Flat plate and NACA airfoil coefficient of lift vs. Reynolds number
• Flat plate and NACA airfoil pressure contour plot

Effort:

• The flat plate graphs are present.
• Includes a reference area and reference length for the flat plate measurements with one sentence of justification.

Complete:

• All plots are present.
• All performance numbers are reported
  • Pressure on the bottom of the flat plate wing compare to the top of the flat plate wing at a 15 degree angle of attack
  • NACA 6412 wing’s Coefficient of Lift compared to the flat plate at an angle of attack of 15 degrees
  • Pressure differences between the top and bottom surfaces of the NACA 6412 wing compare to the pressure difference on the flat plate at 45 m/s and a 15 degree angle of attack
• Brief (4 sentence) discussion considering performance numbers and comparing NACA airfoil to flat plate wing.