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Old 04-06-2008, 10:35 PM
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Default need earplugs

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Originally Posted by pookie View Post
how loud are they? Is there any way to make them quiet and still get enough air?
Turbine engines are very loud. Not much you can do about the noise except vector the exhaust. You may be able to insulate the engine compartment as long as there was plenty of fresh air going to the turbines. As previously mentioned, a majority of the air ingested into a turbine engine is utilized for cooling. They even have micro turbines for model aircraft and they are very loud themselves!
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Old 04-06-2008, 11:27 PM
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There was a guy on the Miami Show FPC Run that had them in his cat. I believe he told me that they had a water tank onboard so they could do compressor washes while running.

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Old 04-06-2008, 11:52 PM
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Originally Posted by chuckbeecher View Post
There was a guy on the Miami Show FPC Run that had them in his cat. I believe he told me that they had a water tank onboard so they could do compressor washes while running.
This is interesting, because I would think this would induce a flame out. Maybe not a full compressor wash, but I may be wrong. I know that our engine washes, it is imperative that no ignition occurs to prevent any damage.
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Old 04-07-2008, 07:03 AM
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Default On the same subject.

Here is Gerry's thread that address's a lot of these issues and adds info..
In case ya missed it.
http://www.offshoreonly.com/forums/s...d.php?t=169351


You can see why he is known as KNOT RIGHT !



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Old 04-07-2008, 08:58 AM
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Originally Posted by Fountain38SC View Post
After watching Geico pull the motor and spend 28K on just the part that was damaged - I have a few questions about their operation in a salt environment. . .

Hmm let me see... All the coast guard helicopters are turbines
and operate above and in close proximity to salt water.
Lycombing actualy produced specfic components on T53,s
for the Navy for marine projects. Ex. Stainless comp. Housings. I know I have them. Hence the Term Marinized
Turbines.

A Turbine engine is far superior in design and construction
then any piston or deisel counter part period.
Its simple physics.
The next time you board a plane think of this.


Are you refering to the Geico video?
They over heat the Engine. They run on the edge all the time
constantly pushing it. Running into 100 foot roosters. Ask The throttle man or the navigator they will tell ya.
There Turbine builder even has a overtemp shut down. With a over ride button. Ask them if they ever push the override button.
They even mist water into the intake to try to keep it cooler.
Didnt this boat get TopDog in Biloxi?

Get this......... Turbines can run on Bio Deisel.

My compliments to all the hard work and R&D these inovators are doing. Kudos to there ability to think outside the box!
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Old 04-07-2008, 09:00 AM
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I gotta take a road trip up there one of these days and check out your setup !
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Old 04-07-2008, 09:06 AM
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Quote:
Originally Posted by 47pilotsteve View Post
This is interesting, because I would think this would induce a flame out. Maybe not a full compressor wash, but I may be wrong. I know that our engine washes, it is imperative that no ignition occurs to prevent any damage.

In having a conversation with Two helicopter mechanics
in regards to how to wire my Voltage regulators.
We had a interesting conversation about washing the Turbines.
They have clients in the crop dusting buisness that use copters
for this. The material being sprayed is highly corrosive to the
engines and it actually gets injested.
They actually take a garden hose and at Ground idle spray
the Intake of the Turbine while its running.
I couldnt beleave it.

When is the last time ya seen a Helicopter fall
from the Sky from the rain?
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Old 04-07-2008, 09:08 AM
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If you go to someone like Arruda at Turbine marine, you'll end up with a nice turn-key package that will work well... but it will still have all the turbine shortcomings. Home-brewing a setup isn't so easy. I suppose if you had access to several people who had done it successfully and could walk you through their experiences, you'd have better odds.

Al Copeland watched while dogpaddling as his cat went up in flames. They didn't "engineer" the motor mounts properly and a broken housing allowed exhaust gas to blow-torch thru the bottom of the hull.

They're still loud, they're still fuel thirsty and they're still made for steady-state RPM operation. That's why in most large marine applications they're used in conjunction with diesels for maneuvering and low-speed operation. Solid, low-hour units are still very expensive.
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Old 04-07-2008, 09:12 AM
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Quote:
Originally Posted by bgchuby01 View Post
also in a boat whats the chance of a hot start

Fresh charged batterys.

Turbines rely on air to cool when the Turbine fires it must
have enough air to cool the intial start.
When it first ignites the starter is providing the force spinnig the compressor blades providing this air. The slower the spin the less air.

Turbines have a start fuel solenoid and start fuel nozzles.
This is electricly activated.
Having this on a seperate switch and the ability to cut this
out early will drop the pyro almost instantly.
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Old 04-07-2008, 09:13 AM
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Quote:
Originally Posted by 47pilotsteve View Post
This is interesting, because I would think this would induce a flame out. Maybe not a full compressor wash, but I may be wrong. I know that our engine washes, it is imperative that no ignition occurs to prevent any damage.
I've seen plenty of unlimited hydroplane races. When they get hammered with roostertail, that's it. Rain is one thing, but there's a bit of difference between mist and a mass of water. I'd like to watch while someone toses a 5 gal. bucket of water into the inlet of a turbine running at 100%... from a distance, of course.
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