Although there have been five replicas built, this baby is all O.G. and has been constantly restored over the last ten years. Here is it’s first engine start-up of a fresh real jumo-004 turbojet engine. The first mass-production jet engine. It starts with a two-stroke in the nose of each to spin it up for start. They usually lasted only fifty hours, but then a P-51 mustang wasn’t designed to last long either; Heads on a Merlin v-12's come off every 100 hours for work, assuming they weren’t shot down before then.
The first taxi test was in October 2019.
These engines are low early tech. The mig-15 centrifugal flow engines based off the US GE/Whittle first-generation engines, took fifteen seconds to get from idle to full power. That is an eternity! There wasn’t an electronic injection system in any way, it was just a valve in your hand and an eye on the turbine temperature. Too hot? you are giving it too much gas until it can get up to speed. Pull it back too quickly? Flameout.....too much air flowing in and not enough gas to maintain the flame. now what ya gonna do....
Due to this old heavy technology, they have a lower pitch to their idle sound, and as an axial flow design, you can hear a throttle movement with the burner section blowing thrust on the turbine blades. With the lack of real fine control of throttling, it operated more or less like 80's turbo lag. Nothing until it really gets up to speed and there is the push! But any changes take a while to compensate. Baby it.
Hopefully it flys before long