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Old 11th March 2011, 16:30
DavidIsby DavidIsby is offline
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Aboukir air filter on Spit V - performance?

Of all the kit that has been hung on Spitfires, nothing seems to have attracted as much dislike as the Aboukir filter.

Does anyone know of a source for the details of how badly it cut Spitfire V performance? What was the ram recovery ratio (what ratio of possible air intake actually makes it into the supercharger – 50% for a basic Spitfire IA)? What did it add to overall drag?

Thanks,
David Isby
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