cooling drag meaning in Hindi

Examples

1. The company claimed engine and cooling drag reductions of 46 percent versus the conventional combustion engine arrangement.
2. When the sliding cowl ring was closed ( during flight ), the air used for cooling the engine was ducted through the nacelle to the rear exhaust orifice for a net thrust gain, as opposed to the usual cooling drag penalty.
3. In flying the prototype from Diamond's Wiener Neustadt plant to the 2012 AERO Friedrichshafen aviation trade show, the aircraft achieved 16.6 mpg fuel efficiency, the result of improvements in cooling drag and aerodynamic drag made during its development.