50 KN VTOL JET ENGINE
Here you can see about 50 kN ( 11 240 lbf) VTOL jet engine. It is more detailed concept desing about the second concept candidate: Concepts
I don't guarantee that this more detailed concept design would work or the thrust-to-weight ratio is more than 50 even after some changes. Anyway, my assumption is that it works and the thrust-to-weight is more than 50 maybe after some changes.
Main technical specifications:
Construction and pictures can be found here:
Bill of material can be found here: BOM
The basic jet engine calculations can be found here: Calculations