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Old 8th Mar 2012, 02:49
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GreenKnight121
 
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Originally Posted by glojo
Would something similar be used for EMALS namely one huge power unit to supply the copious buckets full of volts required to launch the aircraft.
Electromagnetic Aircraft Launch System - EMALS
The average power required by EMALS is only 6.35 MVA.
The diesels and GTs in QE or POW generate a total of 112MW.
The propulsion motors use a max of 80.16MW.

{VA, volt amps, (or VA or kVA or MVA) is a measure of the complex power in a system, which includes the real power (watts, or kW or MW) and the reactive power. Real power and VA are related by the power factor.

Volt amps = power factor x real power
IF your power factor is 0.9, then
VA = 0.9 x 1000 kW
VA = 900 kVA

Circuits containing purely resistive heating elements (filament lamps, strip heaters, cooking stoves, etc.) have a power factor of 1.0. Circuits containing inductive or capacitive elements (lamp ballasts, motors, etc.) often have a power factor below 1.0. }

So no matter what the PF is, there will be far more than enough power to run both cats at the same time without dropping speed any.
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