My He 162 is really a bit 'over the top' as far as information for anybody else to build so I might try a Heinkel using my simpler? 5 mm XPS foam board technique as I have had some success with it but unfortunately none are Heinkels!
So how about an EDF He 178 EDF.
Actually quite a challenge as it used a tiny jet engine which results in seriously inadequate inlet and exhaust sizes for an EDF.
The history of the He178 is interesting in that Hans Von Ohain designed, built and patented what he called a 'garage' jet engine which just about worked in 1936. It was done completely independently of Frank Whittle. His professor at University wrote to Heinkel who arranged a meeting with Heinkel's engineers present. Heinkel could see the potential and set up Ohain in a lab with Heinkel's engineering facilities at his disposal.
The first engine made worked but only when using hydrogen as a fuel. The second HeS 3 used diesel fuel and was reliable enough for flight. All this work was done in secret and as a private venture as was the Heinkel designed small plane, the He 178, to put the 'flight' engine in. It achieved the first flight in 1939. It had a modest performance which did not impress the Luftwaffe officials when it was displayed to them
The He178 V-1 that flew in 1939.
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Note the typical Heinkel wing shape. Secrecy resulted in very few photos of the V-1. The second prototype V-2 had bigger span straight taper wings. It was better photographed but never actually flew.
Although the RLM (German Air Ministry) were very interested there was concern that as a
aircraft manufacturer Heinkel's team were not experienced enough to develop the jet engine. This view did not impress Ernest Heinkel who continued to fund development independently with the result that none of the more powerful Heinkel engines got past initial development before the end of the war whereas engines developed by engine manufacturers Junkers and BMW did.
Even in the UK it was only the 'intervention' by Rolls Royce that got Whittle's engine into full development and series production.
Apologies for the history lesson!