This story originally appeared in Volume 25 of Road & Track. After all, the duct, or “submerged inlet,” was developed by the ...

Symmetrical in design, the VAV Flippable Heater can be rotated to fit the requirements and location of the HVAC system, which allows the heater to be mounted in four different positions. ETL listed, ...

A NACA duct is inset and has very low drag, but because it "eats" the boundary layer, the air that comes in has lower flow volume than a raised scoop.

Since they obtain measurements quickly, provide a direct air volume reading, are easy to use, and come with a variety of hood sizes to match various grilles, capture hoods are often the tool of choice ...

It hasn’t had quite the impact of GPS or the atomic bomb, but in the pantheon of items created by U.S. government researchers, the NACA duct must be considered one of the most enduring. This ...