Originally Posted by
FalconWings
Oliver on the 300's and higher you really need to start developing an accessory drive to plug in all sorts of goodies. Power/pneumatic pump/smoke pump........imagine the possibilities of a low pressure pneumatic system that does not lose pressure. If the starter core is large enough, you could turn it into a generator after startup.
just mad ideas! ;-)
It's not that simple. A single shaft turbine is designed for a specific amount of drag on its shaft. Anything that adds drag, means lower RPM and lower compression ratio, thus different ( degraded ) operating parameters for the combustion cycle. This means that the combustion cycle will be offset and will need a different compressor, NGV and turbine stage operating characteristics as well. In other words, this would only work with variable blade geometry. It would mean complex 3D printed aluminum diffuser and Inconel NGV, bumping up the price of the turbine by about 50 k USD...
An online genrator is possible since it keeps a fairly constant load on the shaft. Any random accessory addition would render a normal single shaft engine inoperative.