In aerodynamics, the zero-lift drag coefficient is a dimensionless parameter which relates an aircraft's zero-lift drag force to its size, speed, and flying altitude.

Sep 2, 2017 · The drag coefficient is usually given as a funtion of the lift coefficient and the zero-lift drag coefficient (cD0 c D 0): cD = cD0 + k ⋅c2 L c D = c D 0 + k ⋅ c L 2. How can I calculate/estimate cD0 c D 0? You can look it up in reference books. For wings, the NASA report server is your friend.

For a highly streamlined, aerodynamically clean shape the zero lift drag at subsonic speeds where there are no shock waves should be mostly due to skin friction. Pressure drag arises from regions of separated flow, which need to be avoided. R.T. Jones11 has presented a striking figure,

Jul 19, 2024 · The drag coefficient is a number that engineers use to model all of the complex dependencies of shape, inclination, and flow conditions on aircraft and rocket drag. This equation is simply a rearrangement of the drag equation where we solve for the drag coefficient in terms of the other variables.

Jan 21, 2023 · The total drag coefficient is equal to the drag coefficient at zero lift (Cdo), plus the induced drag coefficient. Cd = Cd0 + Cl^2 / ( pi * Ar * e) The Wright brothers learned about induced drag the hard way.

May 28, 2024 · Learn about the zero-lift drag coefficient (CD,0), a crucial parameter in hydrodynamics for optimizing the design and efficiency of vehicles like ships and submarines without lift.

May 30, 2024 · The Zero-Lift Drag Coefficient is a crucial parameter in aerospace engineering, quantifying the drag that an aircraft or aerodynamic body experiences when it generates no lift. This coefficient offers deep insights into the efficiency and performance of any flying object at various speeds and angles of attack.

If we are considering an aircraft, we can think of the drag coefficient as being composed of two main components; a basic drag coefficient which includes the effects of skin friction and shape (form), and an additional drag coefficient related to the lift of the aircraft.

Zero-lift drag (Cd0) is calculated from scratch for individual aircraft components using a traditional preliminary-design approach, based on wetted areas, body form factors and calibrations with known aircraft data.

One version (see Fig. 13.2) subdivides the zero-lift drag into profile drag, interference drag, and miscellaneous drag (trim drag and additional or parasite drag). The profile drag can in turn be subdivided into skin-friction drag and pressure drag. Wave …