Hi there. I spent some time refining the model, shaders and details.
I ditched the design for the air intakes at the “nose” of the craft. Will have to figure out a different way to get the airflow to the engines. Maybe I will post some sketches later on.
@ GrimZA: Yes I modeled the turbine exhaust. Im kinda happy with the outcome, because I was in fear that the exhaust would mess up the basic shape of the overall design too much. Here is a viewport-render for a closer look.
@ strapazie: This is my own concept. I scribbled the basic shape on my Ipad and then headed directly to Blender to explore the basic shape of the craft.
I still have a lot of work to do. Next will be the belly-mount for a deployable life raft or aerosol fire extinguish-launcher.
The basic model for the landing/spotting led-strips on the frontal skids is done. Just need to add lights and reflectors.
Side Note: I will update the next previews of the project in PNG file-format…the jpg. compression on BA is quite awful 
Stay tuned for more!
Greetings from Germany,
Fast