Grandmother Goes Down at the Pole

On Tue, 23 Dec 2003 16:51:25 +0930, David Pears
wrote:

On Mon, 22 Dec 2003 23:15:49 GMT, (Bruce
Hamilton) wrote:

I hope this post doesn't sound impolite or abusive to you, as you
obviously wanted to add some data, but the storage constraints on
Avgas mean it has to be regularly retested before it can be accepted
as fuel for aircraft. Avgas is usually more stable than Mogas, but it
still has to be within a current test period.

I though gas turbines (as used in aircraft engines) would run on just
about any old liquid, as long as it has a hint of hydrocarbon in it?


Yes and no, as Air New Zealand discovered. Many gas turbines have
other components like fuel pumps that turn out to be quite sensitive
to the lubricating properties of the fuel. The lubrication properties
of Avgas/Mogas are near nil. Jet A is actually pretty slippery stuff.
So while you can burn just about anything in the turbine, you have to
make sure that doing so doesn't damage something else...
David

"matt weber" wrote in message reply:::

I though gas turbines (as used in aircraft engines) would run on just
about any old liquid, as long as it has a hint of hydrocarbon in it?


Yes and no, as Air New Zealand discovered. Many gas turbines have
other components like fuel pumps that turn out to be quite sensitive
to the lubricating properties of the fuel. The lubrication properties
of Avgas/Mogas are near nil. Jet A is actually pretty slippery stuff.
So while you can burn just about anything in the turbine, you have to
make sure that doing so doesn't damage something else...
David



We had Garrett turbines powering 60Hz alternators at the Cooby Creek
Tracking Station at Toowoomba in the late 60's and found the FCU's chewing
up their internal bearings like crazy until we got an anti-static additive
put in the ATK. Electrostatic corrosion.

--
JW²
Norton AntiVirus 2003 installed
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