Re: [GZG] Scale Creep

["Richard Bell" <rlbell.nsuid@xxxxxxxxx>]

On Thu, Apr 10, 2008 at 3:13 PM, Brian Burger <blurdesign@xxxxxxxxx> wrote:

On Thu, Apr 10, 2008 at 11:16 AM, John Atkinson <johnmatkinson@xxxxxxxxx> wrote:
> On Thu, Apr 10, 2008 at 12:18 PM, Ground Zero Games <jon@xxxxxxx> wrote:
>  > >Parking a tank is easy - cars are not an obstacle. The MPG is lousy though.
>  >  >
>  >  >Michael
>  >
>  >
>  >  It's more a case of GPM rather than MPG, isn't it...?  ;-)
>  >
>  >  (Seem to recall reading long ago that an M60 averaged about 5 gallons
>  >  to the mile!)
>
>  It's been a while since the class, I but IIRC it takes about 5 gallons
>  of fuel just to START the M-1's turbine engine.

Turbines are notorious for gulping fuel when they start. That's why
it's often more effecient to just leave them running. Easier on the
turbine, too - fewer heating/cooling cycles to stress it.

Tubines guzzle fuel at start because, during startup, the turbine is idling.  Driving the compressor (running for zero mechanical power out) consumes 30-40 % of the fuel used at max rated power.  Gas turbines in ground vehicles only make sense in racecars and hybrids that can switch off the turbine whenever it cannot be run flat out.

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