Define retrorockets. retrorockets synonyms, retrorockets pronunciation, retrorockets translation, English dictionary definition of retrorockets. n. A rocket engine used to retard, arrest, or reverse the motion of a vehicle, such as an aircraft, missile, or spacecraft. n a small auxiliary rocket...
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For the switched mode BEC to output 5V/1A the current flow in is just 0.50A (actual test data), so in this case the power on the BEC is 11.1V * 0.5A = 5.6W with a useful output of 5V * 1A = 5W meaning the BEC only has to convert 0.6W of power to heat and runs at an efficiency of 5W/5.6W = 89%