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The Naiad was in the same power class as the Mamba and Dart but was never specified in the civil programme for the Brabazon type IIB short-medium range airliner (resulted in the Viscount with Dart and Apollo with Mamba). The coupled Naiad was funded as a military alternative to the Double Mamba. The Coupled Naiad was specified for the Blackburn Y.B.5 and Y.B.7 aircraft... the latter a rival to the Gannet. The development programme for the Blackburn was protracted and as Gannet/Dble Mamba was developing reasonably the funding was withdrawn for Coupled Naiad.The original Naiad had a nacelle design the embraced a ducted intake in the spinner. Flight published a cutaway of the arrangement in 1951, first pic below, and it was estimated that the ram effect was worth 19% more than a standard intake but at the expense of weight and a propensity to icing (tests were conducted on Lincoln..as we have noted the techniques were useful to Bristol when the Proteus on Britannia ran into problems).....tbc
The Naiad was in the same power class as the Mamba and Dart but was never specified in the civil programme for the Brabazon type IIB short-medium range airliner (resulted in the Viscount with Dart and Apollo with Mamba). The coupled Naiad was funded as a military alternative to the Double Mamba. The Coupled Naiad was specified for the Blackburn Y.B.5 and Y.B.7 aircraft... the latter a rival to the Gannet. The development programme for the Blackburn was protracted and as Gannet/Dble Mamba was developing reasonably the funding was withdrawn for Coupled Naiad.
The original Naiad had a nacelle design the embraced a ducted intake in the spinner. Flight published a cutaway of the arrangement in 1951, first pic below, and it was estimated that the ram effect was worth 19% more than a standard intake but at the expense of weight and a propensity to icing (tests were conducted on Lincoln..as we have noted the techniques were useful to Bristol when the Proteus on Britannia ran into problems).
....tbc
