Drone Design

• Aerolab University of Utah mach up free design software for fixed wing.
• AVL MIT Aerodynamic stability analysis MIT
• How to choose the right props
• Wing cube loading
• Design flying wing
  • there is an optimum value of taper ratio for minimum drag, which is around 0.4.
  • For tailless aircraft, only airfoils with a small pitching moment should be used. If possible a zero pitching moment is preferable. So, the chosen airfoil is the HS522 airfoil, which is one of the most popular airfoils for swept wings due to low drag (speed) and very low Re-Numbers. This airfoil produces a nose down moment coefficient ( )
  • , there is a certain set of parameters that fully define its shape. Some of these parameters are: “aspect ratio, sweepback angle, taper ratio and span”.
  • The cost functions are maximum lift coefficient ( ), minimum drag coefficient ( ) and maximum negative slope of pitching moment coefficient with AOA ( ).
  • From the figures, it can be concluded that the effect of sweepback angle on lift and drag coefficient ( , ) is negligible and as the sweepback angle increases, the negative slope of pitching moment coefficient with AOA ( ) increases. Also, as the taper ratio increases, the lift coefficient ( ) slightlyincreases due to providing more lift at the tips. As it is known, there is an optimum value of taper ratio for minimum drag, which is around 0.4.
  • as the taper ratio increases, the negative slope of pitching moment coefficient with AOA ( ), increases. Furthermore, as the aspect ratio increases, lift coefficient ( ) increases for fixed span. The increase in lift coefficient ( ) decays as the aspect ratio increases. This ensures that the constraint of choosing airplane with moderate value of aspect ratio within range of [3-6] is reasonable for fixed span. In addition, the drag coefficient ( ) increases as aspect ratio increases until it reaches the value of 4 for fixed span. Then, the drag coefficient ( ) starts to decrease as aspect ratio increases after the value of 4 for fixed span. Besides, as the aspect ratio increases, the negative slope of pitching moment coefficient with AOA ( ) rapidly increases for fixed span
  • Hence, the near-optimum values of the geometrical parameters are that aspect ratio equals 5, taper ratio equals 0.7 and sweepback angle equals 30 degree to get maximum lift coefficient ( ), minimum drag coefficient ( ) and maximum negative slope of pitching moment coefficient with AOA ( ).
• Aerodynamic design of flying wings
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• Calculate twist for wings
• Wing sweep
• Airplane tuning
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• pulp dronet Visual autonomous drone navigation

• 3m supper 77 spray adhesive

• props
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tags: #Drone Design

tags #Drone Design #Drone Motor sizing