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2. Structure of the United States Space Force - Wikipedia

   en.wikipedia.org/wiki/Structure_of_the_United...

   The United States Space Force is organized by different units: the Space Staff, the field commands, and the space deltas. The Space Force is organized as one of two coequal military service branches within the Department of the Air Force, the other being the United States Air Force. Both services are overseen by the Secretary of the Air Force ...

3. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   Direct torque control is a method used to control AC motors. It is closely related with the delta modulation (see above). Motor torque and magnetic flux are estimated and these are controlled to stay within their hysteresis bands by turning on a new combination of the device's semiconductor switches each time either signal tries to deviate out ...

4. Dahlander pole changing motor - Wikipedia

   en.wikipedia.org/wiki/Dahlander_pole_changing_motor

   A Dahlander motor (also known as a pole changing motor, dual- or two speed-motor) is a type of multispeed three-phase induction motor, in which the speed of the motor is varied by altering the number of poles; this is achieved by altering the wiring connections inside the motor. The motor may have fixed or variable torque depending on the ...

5. Flow coefficient - Wikipedia

   en.wikipedia.org/wiki/Flow_coefficient

   Flow coefficient. The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow. It describes the relationship between the pressure drop across an orifice valve or other assembly and the corresponding flow rate . Mathematically the flow coefficient Cv (or flow-capacity rating of valve) can be expressed as. where.

6. Direct digital control - Wikipedia

   en.wikipedia.org/wiki/Direct_digital_control

   Direct digital control is the automated control of a condition or process by a digital device (computer). Direct digital control takes a centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller. The centralized computer then follows all of its production rules ...

7. Flexible AC transmission system - Wikipedia

   en.wikipedia.org/wiki/Flexible_AC_transmission...

   A Flexible Alternating Current Transmission System ( FACTS) is a family of Power-Electronic based devices designed for use on an Alternating Current (AC) Transmission System to improve and control Power Flow and support Voltage. FACTs devices are alternatives to traditional electric grid solutions and improvements, where building additional ...