Alternative engines

[Greg Hermann]

>>The M1 tanks use turbins for power, and they are quite loud, but I
>>have been told that they are quieter that the diesels the previous
>>generation used at full bore.  I don't know how they made them work
>>in a tank and solved these problems.
>>
>>				Roger
>>
> What you would want I believe is a "Turboshaft" type turbine.
>Most modern turbines use two or more compressor/turbine shaft's
>running at different speeds. This is done with the the center shaft
>being solid and having bearings around it and the next shaft is
>hollow and rides around the first shaft. Different stages in the
>compressor and turbine sections work more efficently at different
>RPM's.
> Turboshaft engines, like a turboprop airplane(C-130, or most
>commuter aircraft),turboshaft helicopters

Commercial jet liners with "fan-jet" engines are also this type of engine,
virtually identical to a turbo-prop type engine. It is just that the output
shaft drives the "fan" --which is really nothing more than a ducted
propellor.

Greg