enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Airfoil - Wikipedia

   en.wikipedia.org/wiki/Airfoil

   An airfoil-shaped wing can create downforce on an automobile or other motor vehicle, improving traction. When the wind is obstructed by an object such as a flat plate, a building, or the deck of a bridge, the object will experience drag and also an aerodynamic force perpendicular to the wind. This does not mean the object qualifies as an airfoil.

3. Foil (fluid mechanics) - Wikipedia

   en.wikipedia.org/wiki/Foil_(fluid_mechanics)

   However, while it does generate lift, it also generates a large amount of drag. [8] Since even a flat plate can generate lift, a significant factor in foil design is the minimization of drag. An example of this is the rudder of a boat or aircraft. When designing a rudder a key design factor is the minimization of drag in its neutral position ...

4. Lift coefficient - Wikipedia

   en.wikipedia.org/wiki/Lift_coefficient

   For a thin airfoil of any shape the lift slope is π 2 /90 ≃ 0.11 per degree. At higher angles a maximum point is reached, after which the lift coefficient reduces. The angle at which maximum lift coefficient occurs is the stall angle of the airfoil, which is approximately 10 to 15 degrees on a typical airfoil.

5. Lift (force) - Wikipedia

   en.wikipedia.org/wiki/Lift_(force)

   The airfoil shape and angle of attack work together so that the airfoil exerts a downward force on the air as it flows past. According to Newton's third law, the air must then exert an equal and opposite (upward) force on the airfoil, which is the lift.

6. Aerodynamic center - Wikipedia

   en.wikipedia.org/wiki/Aerodynamic_center

   The aerodynamic center is the point at which the pitching moment coefficient for the airfoil does not vary with lift coefficient (i.e. angle of attack), making analysis simpler. [ 1 ] d C m d C L = 0 {\displaystyle {dC_{m} \over dC_{L}}=0} where C L {\displaystyle C_{L}} is the aircraft lift coefficient .

7. Oscillating water column - Wikipedia

   en.wikipedia.org/wiki/Oscillating_water_column

   The PTO system is the second main component of an OWC device. It converts the pneumatic power into a desired energy source (i.e. sound or electricity). The PTO system design is very important to the efficiency of the oscillating water column. It must be able to convert airflow going both out of and into the collecting chamber into energy.

8. Supercritical airfoil - Wikipedia

   en.wikipedia.org/wiki/Supercritical_airfoil

   A supercritical aerofoil (supercritical airfoil in American English) is an airfoil designed primarily to delay the onset of wave drag in the transonic speed range. Supercritical airfoils are characterized by their flattened upper surface, highly cambered ("downward-curved") aft section, and larger leading-edge radius compared with NACA 6-series ...

9. XFOIL - Wikipedia

   en.wikipedia.org/wiki/XFOIL

   XFOIL is an interactive program for the design and analysis of subsonic isolated airfoils.Given the coordinates specifying the shape of a 2D airfoil, Reynolds and Mach numbers, XFOIL can calculate the pressure distribution on the airfoil and hence lift and drag characteristics.