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2. Computer fan - Wikipedia

   en.wikipedia.org/wiki/Computer_fan

   Heights, or thickness, are typically 10 mm, 15 mm, 25 mm or 38 mm. Fan sizes from left to right: 140 mm, 120 mm, 92 mm, 80 mm, 60 mm, 50 mm and 40 mm. Typically, square 120 mm and 140 mm fans are used where cooling requirements are demanding, as for computers used to play games, and for quieter operation at lower speeds.

3. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

4. Variants of the M113 armored personnel carrier - Wikipedia

   en.wikipedia.org/wiki/Variants_of_the_M113...

   It is armed with a 25 mm Oerlikon-Contraves machine-cannon ranging up to 1,500 m and a M/62 LMG mounted co-axially. The 25 mm Oerlikon-gun has a firing-rate of approximately 600 rounds a minute. The main cannon and the coaxial are mounted in an Italian Oto Melara turret and have a thermal sight produced by Zeiss.

5. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   An axial fan is a type of fan that causes gas to flow through it in an axial direction, parallel to the shaft about which the blades rotate. The flow is axial at entry and exit. The fan is designed to produce a pressure difference, and hence force, to cause a flow through the fan. Factors which determine the performance of the fan include the ...

6. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

7. M113 armored personnel carrier - Wikipedia

   en.wikipedia.org/wiki/M113_armored_personnel_carrier

   The engine was moved to the rear of the vehicle although the drive sprockets were maintained at the front. Armament was a 25 mm cannon in a remotely operated turret. Crew consisted of commander, driver and gunner. It has also been used by the Canadian Army as the Lynx reconnaissance vehicle. AIFV Dutch AIFV, Model YPR-765, with Oerlikon KBA 25 ...