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Install an afterburner on the electric fan

Posted on September 18, 2021 by William

The afterburner is generally considered the coolest feature of military fighter jets. Injecting the original fuel into the exhaust stream of a jet engine, the afterburner is responsible for generating hot exhaust gas, and is also the key to achieving supersonic flight for many aircraft. [Integza] Want to see if the same concept can be applied to electric duct fans, And set out to find out.

Of course, building an afterburner for EDF does add a lot of complexity. The flame tube is installed downstream of the EDF and is equipped with a carefully drilled brass tube that serves as a fuel injector. The flame tube is also equipped with a car glow plug to ignite the fuel, which is a lighter gas filled directly from the tank. The whole assembly is wrapped in a transparent acrylic tube so that people can easily see the burning situation inside.

The results were mixed. Although the fuel does burn, it burns in a fairly intermittent manner. Under proper operation, the afterburner will run in a smooth, continuous and roaring combustion. In addition, no thrust measurement was performed, and the assembly hardly shook the table.

So, if anything, the video is more like a guide on how to burn a lot of lighter gases with the help of an electric fan. This concept does have advantages, and we have seen past attempts, but we would love to see a correct setting of thrust readings with and without an afterburner to see if it actually produces some useful thrust. Video after the break.

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