It's from the Harrier, where they installed an inflatable boot at the inlet area on the outside, so airflow inside will stay laminar. Just 'cause I think that it's cool, I'm going to add a drawing that illustrates a way to deal with turbulent flow in a duct. Funny that the artist's rendering doesn't show that path of flow and the turbulence that induces. I suppose this device doesn't apply to carbs that have choke plates at the entrance, right?Īssuming air turbulence can't be corrected before reaching the carb entrance, the entrance plate divider actually causes turbulence as it draws and mixes stagnant air from the 'quiet' or slower flowing side of the divider plate.Īlso, it appears that the entrance divider plate doesn't meet up with the slide face to block air flow from above and adjacent to the slide. I think that matters to the air pressures in the carb throat driving the fuel jet flow rates. I noticed the 'artist's rendition' uses slides without an entrance cutaway. But, I'd like to know root cause or that a problem exists before looking at approaches that 'fix' it. So, the addvert sort of makes the reader do a 'leap of faith' that is actually exists, which it may. I just don't why the turbulent inlet flow assumption is made.

Maybe someone tossed the inlet stacks? Or, put an air filter membrane in the air path close to the carb? Or, well. Which sort of begs the question, why is it turbulent? It occurs to me, that air flow straighteners are not new.īut, they only perform a real function when the airflow is turbulent.

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