I assume it's just the starter turbine that he's using to drive the turbo, and not the helicopter main engine?
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I give up.
Feb 03, 2008
25 Replies
Maybe he isn't doing that.
wouldn't that air be hot tho? i thought engines ran better on cold air?
james
I presumed so too.
But I have one here
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Its a Solent gas turbine starter.
Its about 16 lb in weight and 72 shaft hp... Not 7.2 but 72!
Now a bleed from the compressor should be plenty of boost, as it runs at about 4 bar... It makes a lot of noise and heat too. The exhaust used to drive a secondary turbine much much bigger than a car turbo to give output power to a shaft. It can spare the amount of air a small turbocharger produces directly from its compressor without really noticing...
They do. But a turbo compressor is exactly the same as the turbojet comnpressor. Both give hot air - thats why we use intercoolers.
oh yeah, i had forgotten that :-)
james
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