Ok here I go to Geekville for a minute.
N1 is the gas producer. It is a two stage gas producer turbine
that also drives a axial centrifigual compressor. It consists of
two gas producer nozzles and two turbine wheels. This gas producer directs the gas flow onto the Turbine Wheels. (N2)
N1 max rpm is approx 26,000 rpm
N2 consits of two turbine wheels this is mechanicaly independent of the N1 system which is called free power turbine. Free power Turbine allows constant turbine power speed while varying gas producer speed to maintain power.
The n2 system has a reduction system which brings the
rpm down to 6,600 rpm.
Here is why these work well in a boat.
Because the N2 is not mechanical connected to the n1
the output shaft can actualy be stopped for a short period
at idle. This enables the ability to connect a standard SCS
type crash box. to the output. Now we have shift capability
rig a caliper stop the shaft and choose your forward, reverse
No that I spewed all this BS I,m going to grab a Corona!
In the GE 90 video N2 is the gas producer. I don't know why they label them differently. Your way is how it was in the helicopters I flew. These are 700 HP Turbomecca's. They are hooked together with a overrunning clutch, so if one quit the other one didn't drive it. Doug
Last edited by outriggers; 04-07-2008 at 03:43 PM.
If any of you guys need some advice on turbine instalations in boats, please give me a call @ 954 979-4409.
I will be more than happy to give some advice.
Turbine Marine Inc
Thank you for yor offer.
One off the top of my head.
What are you doing with the govenor?
locking it down at a given percentage?
Added another shift lever, and run on the govenor as the throttle?
Oh yeah can I borrow Haggins black American express cards so I may rig a couple more Turbine boats
Congrats by the way on the Biloxi runs.
Last edited by KNOT-RIGHT; 04-08-2008 at 06:57 AM.
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