Re: [GZG] Fighters and other military planes grounded by ash

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http://mail.csua.berkeley.edu:8080/mailman/listinfo/gzg-lOn Thu, Apr 22,
2010 at 4:00 PM, Oerjan Ariander
<orjan.ariander1@comhem.se>wrote:

> TomB wrote:
>
>  I'm sure some sort of dust filter might help at the intake, but
>> ultimately any form of turbofan or turbojet needs to suck in a high
>> volume of air
>>
>
> A dust filter with a fine enough mesh to catch the volcanic ash would
> effectively choke a jet engine or turbine (including the turbines on
many
> modern helicopters). Piston engines manage a lot better though, so
WW2-era
> aircraft shouldn't be too badly bothered by these conditions.
>
[...]

>
>  Mind you, the same aforementioned 747 apparently lost all visibility
to
>> the
>> outside world due to the windows being covered in ash residue.
>>
>
> Not just covered, but sandblasted opaque. They had to replace the
> windscreen and three out of four engines before the aircraft could be
> ferried back to the UK for more serious repairs :-/ (Again WW2-era
propeller
> aircraft should manage better - they fly slowly enough that the
sandblasting
> effect is reduced :-/ )
>

Ahhh, technology!  :-D

Mk