R. David Steele wrote:
On 14 Apr 2004 22:44:09 -0700, (KDR)
wrote:

If necessary, is it possible to use F-76 as aviation fuel? I've read
somewhere that the RN's Invincible class carrier can trade off her
endurance for embarked air group's endurance by using ship fuel tanks
as 'swing tanks'. Can anyone confirm this one way or the other?

Thanks in advance

Do a little research.

I suggest the same for you, especialy before you dismiss a reasonable
question from a regualr, and usually well-informed, poster.

1) Ship power plants are not "jet engines" -- they are marine gas turbines.
Sometimes these are derived from aircraft jet engines, but they are not the
same. Terminology matters.

2) Marine gas turbines can burn fuels, like F76 diesel, that are not
considered suitable for aircraft engines. They can also burn jet fuel, but
the reverse is not true. A jet aircraft probably cannot burn F76, at least
not for very long. So I'd agree with several earlier posts that this
"swing" tankage would be jet fuel diverted to ship propulsion if need be,
rather than F76 diverted to aircraft use.

Most modern destroyers and cruisers are
powered by jet engines. The Ticonderoga ( CG-47) class and
the Spruance class (DD-963) plus new DD-X series (DD-21) are jet
powered (four engines to two shafts). The Perry class frigate
had two engines.

They have not announced how many engines DD(X) will use, but they have said
that it will probably be Rolls Royce MT-30s, not the GE LM2500s used in
other USN ships. DD(X)'s arrangements may be substantially different from
the other ships, since all-electric propulsion means that none of the
engines will be coupled directly to a propellor shaft.


Originally they were the same engines as used
by the L1011 (2500).

Nope. The L-1011 used the Rolls Royce RB211. I don't know if this has a
direct marine derivative.

The GE LM2500 is derived from the TF39 (military) and CF6 (commercial) engin
es. These are used in the C-5 as well as the DC-10 and many other
airliners, but not the L-1011.

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"Our country, right or wrong. When right, to be kept right, when
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