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  2. Fan coil unit - Wikipedia

    en.wikipedia.org/wiki/Fan_coil_unit

    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. Up to a signal voltage of 2.5 Volts (which may vary with different fan/motor manufacturers) the fan will be in a stopped ...

  3. List of vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_vacuum_tubes

    F – 12.6 V DC parallel heater for 6-cell lead-acid vehicle crank batteries; G – Various heaters between 2.5 and 5.0 V AC (except 4 V) from a separate heater winding on a mains or horizontal-output transformer for the anode voltage rectifier; H – 150 mA AC/DC series heater

  4. Fan heater - Wikipedia

    en.wikipedia.org/wiki/Fan_heater

    Electric fan heater. A fan heater, also called a blow heater, is a heater that works by using a fan to pass air over a heat source (e.g. a heating element). [1] This heats up the air, which then leaves the heater, warming up the surrounding room. They can heat an enclosed space such as a room faster than a heater without a fan, [2] but like any ...

  5. Turbofan - Wikipedia

    en.wikipedia.org/wiki/Turbofan

    The best energy exchange (lowest fuel consumption) between the two flows, and how the jet velocities compare, depends on how efficiently the transfer takes place which depends on the losses in the fan-turbine and fan. [12] The fan flow has lower exhaust velocity, giving much more thrust per unit energy (lower specific thrust). Both airstreams ...

  6. Military engineering vehicle - Wikipedia

    en.wikipedia.org/wiki/Military_engineering_vehicle

    The AEV 3 Kodiak offered by Rheinmetall is a current generation military engineering vehicle; it is built on the base of the Leopard 2 MBT. The EBG combat engineering vehicle, based on the AMX 30 tank, is used by the engineers of the French Army. BAT-M engineering vehicle of Russia and the former Soviet Union

  7. Leopard 2 - Wikipedia

    en.wikipedia.org/wiki/Leopard_2

    The third stage was the planned replacement of the Leopard 2 turret by a new turret fitted with a 140 mm (5.5 in) NPzK tank gun, an autoloader, and the IFIS battlefield management system. [42] The ballistic protection at the hull was to be improved. [42] Originally a total requirement for 650 Leopard 2 tanks with KWS 3 was projected. [43]

  8. Airbus E-Fan X - Wikipedia

    en.wikipedia.org/wiki/Airbus_E-Fan_X

    A BAe 146 flying testbed will have one of its four turbofans replaced by a 2 MW (2,700 hp) electric motor, with provisions to replace a second turbofan.Airbus will build the control architecture and integrate the systems, Rolls-Royce will adapt the Siemens motor and the fan to the existing nacelle, bring the turboshaft, generator and power electronics and Siemens the electric motor and its ...