Re: Inert Gas In Fuel Tanks

From:         Darren Pardoe <dpardoe@st-athan.demon.co.uk>
Organization: <none>
Date:         18 Aug 96 20:13:38 
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On 11 Aug 96 00:03:58 , "P. Wezeman" <pwezeman@blue.weeg.uiowa.edu> wrote:

>   For many years now oil tanker ships have used inert gases (filtered
>exhaust gas from the engines) to fill the non liquid containing part of
>their cargo and fuel tanks, greatly reducing the risk of explosion.
>Explosions, when they do occur now, are usually when the tanks are
>being ventilated and cleaned. Inert gas is also used to pressurize
>the fuel tanks of liquid fuel rockets, since Goddard's time, when
>pressure is needed.
>   Are inert gases used in the fuel tanks of any present aircraft?
>... I suspect that a supply of nitrogen or CO2 carried on board would
>work better than exhaust gas.

The Tornado, used by the Royal Air Force uses nitrogen for the fin fuel tank.
The nitrogen is stored in a small cylinder at the rear of the aircraft and
recharged during a AF/BF servicing.
This system is only used for the fin fuel group only! I wonder why.

Regards
Daz