Icing in Induction Systems

THE history of carburettor icing dates back over 20 years. The earliest report which we have is a paper published in 1920 by S. W. Sparrow, then of the National Bureau of Standards, in which he described the phenomenon and pointed out that many unexplained aeroplane crashes almost certainly could be attributed to this cause. He described the icing action as giving the pilot' the impression that: “A demon was operating the throttles.”