Define aerofoil with accepted terminology with neat sketch. A kite which may be assumed to be a flat plate and mass 1 kg soars at an angle to the horizontal. The tension in the string holding the kite is 60N when the wind velocity is 50 km/hr horizontally and angle of string to the horizontal direction is `35^0`. The density of air is 1.2 kg/`m^3`. Calculate the drag coefficient for the kite in the given position if the lift coefficient in the same position is 0.45. Both coefficients have been used in the full area of the kite. [ 2068-Shrawan ] [8]

A 2mm diameter spherical ball of unit weight 117.5 KN/`m^3` is dropped in a mass of fluid of viscosity 15 poise and spec…

Explain the drag of a Cylinder.

Derive an expression for the forces acting on a submerged body.

Distinguish between pressure and friction drag. Explain with sketches, why airfoil is designed as a streamlined body.

A jet plane having a wing area of `30 m^2` and weighing 28 KN flies at 900 km/hr. The engine develops 8000 KW and has a …

Find the expression for pressure and friction drag. What do you understand by a streamlined body? Give some examples of …

A 2000 kg aircraft is designed to carry a payload of 5000N when cruising at 300 km/hr. The effective wing area is `25 m^…

A kite has an effective area of `0.6 m^2` and mass 0.4 kg. It experience a drag of 15 N in a wind speed of 40 km/hr. Det…