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| Our Engine comes
from a Westland Wasp Helicopter, we are only going to
use the gas generator section, the free running turbine
mounted on the back of the engine that normally drives
the rotor blades will not be used.
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This is a front
view of the Nimbus 503 Gas Turbine mounted on its transporting
crate, as you can see the foreign object damage cover
is in place, with the 24volt starter/ generator in view,
top left of the engine.
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| A rear view of
the gearbox assembly that will not be used on the Jet
Pickup. The Nimbus produces a fast stream of gas which
then spins a high speed turbine wheel, which then in turn
powers a gearbox (shown above) this drives the helicopters
rotor blades via a connecting shaft.
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A view of the
engines dispersing exhausts, with the gearbox just visible,
the cables mounted on top of the exhausts are thermocouples,
these will have to be removed and mounted on to the new
exhaust nozzle which yet has to be fabricated out of stainless
steel. |
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The pipe work
in the midground is the engines anti-icing heating system,
this of course doesn't really need to be left installed
as we hopefully wont have to worry about falling out if
the sky if its cold. The theory is the less we modify
on the engine the better.
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The pipe clearly
shown in the middle is the anti icing and starter/ generator
exhaust vent. The exhaust is constructed this way as the
engine when mounted on a wasp has no cover over it and
thus has to be a water proof design. |
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| That's the pipe
work to the gearbox disconnected, now to unbolt the supporting
bolts and separate the gearbox and engine.
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A slightly nervous
bit, next time I will fabricate an engine lifting frame,
though the webbing does a good job. |
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At last, finally
the engine has been separated from the gearbox and is
now sat happily on the blue running frame, we can now
start looking at how to get the oil, fuel and electrical
systems configured. Much easier to work on!
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One of my friends
'Rob' who has kindly given lots of his precious spare
time to this project. Here he can be seen with the separated
gearbox/ exhaust assembly. The gearbox rotor drive can
be seen below the free turbine inlet. |
