Reply To: Home made jet engine

[John PParticipant @johnp77052]

Some useful download plans can be seen here from Gerald Rutten (zip files)
http://www.gerald-rutten.nl/turbines.htm

They use the same gas container as the early Shreckling engines ,the most thrust obtained from the engine that i made was about 6 lb ,i think the GR 180 in the plans above produces about 36 lb.

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https://www.turbomaster.info/eng/applications/compressor.php

shows the sizes of nearly all made compressor wheels and is a
useful reference.

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The 2 compressor wheels here (1st photo) were from Aliexpress ,the one on the left
is a K27 wheel 47.3 dia inlet and 73.9 dia od 14 blade
the one on the right is a TO4B 45.8 inlet and 70 mm dia od 16 blade.

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The 2 compressor wheels shown here (2nd photo) , on the left milled from
2014 t6 aluminium 68 mm od for KJ 66 engine , the one on the right
is a KKK 5326 123 2038 cast wheel also for a KJ 66 engine.

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The turbine wheel seen here (3rd photo) is for Shreckling FD 3 /64 turbine engine
milled from 718 inconel 20 years ago, perched on top of the remaining 17 inch
of 2 3/4 inch dia inconel 718 bar .

It is perhaps not worth making a turbine wheel from solid these days
unless you already have the material and the means to mill them ,back then
ready made wheels were only just appearing from the GTBA when they had a
batch made for members of the organisation.

http://www.jetmax.ch sell ready made wheels from about 66 to 82 mm dia from
about 165 Euros which suit the KJ 66 engines and also the Gerald Rutten
turbines.

John