Has anyone heard or have any information, good or bad, about supercharged engines for helicopters?
Thanks in advance
Supercharge engines for helicopters
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- New Member
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- skypig
- 4th Dan
- Posts: 1705
- Joined: Nov 2005
Re: Supercharge engines for helicopters
Turbocharged engines were common in Bell 47s.
To maintain performance as altitude increased.*
Disadvantages include cost, complexity and potentially, engine life.
*Robinson “derate#” more powerful engines to achieve the same result.
#reduce permitted MAP at sea level/ISA conditions.
To maintain performance as altitude increased.*
Disadvantages include cost, complexity and potentially, engine life.
*Robinson “derate#” more powerful engines to achieve the same result.
#reduce permitted MAP at sea level/ISA conditions.
- Eric Hunt
- 3rd Dan
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- Joined: Sep 2006
Re: Supercharge engines for helicopters
Better to have an underworked engine than one which has to be turbo or supercharged to stay up. Lose the turbo, lose the fight.
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- Silver Wings
- Posts: 72
- Joined: Apr 2012
Re: Supercharge engines for helicopters
As mentioned previously it's more common to turbocharge because turbos produce excess airflow hence the need of a wastegate to reduce the amount being forced into the engine. Advantage is at higher altitudes the air is thinner so you can use more of what the turbo is capable of.
Downside is you could overboost and kill your engine.
There might be a case for superchargers at low level... they can never overboost the engine and if they fail you wont pump all your oil into your exhaust.
Downside is you could overboost and kill your engine.
There might be a case for superchargers at low level... they can never overboost the engine and if they fail you wont pump all your oil into your exhaust.
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- Silver Wings
- Posts: 15
- Joined: Dec 2017
Re: Supercharge engines for helicopters
Im not going to say for or against.....
But we work with 60 litre cummins engine, 45 litres, MTU and caterpillar C18, C27, C32 - and there is not one supercharger in site. All turbo's and most make midlife (12000 hours) - provided a fitter doesnt run a foreign object through them....
Cheers
But we work with 60 litre cummins engine, 45 litres, MTU and caterpillar C18, C27, C32 - and there is not one supercharger in site. All turbo's and most make midlife (12000 hours) - provided a fitter doesnt run a foreign object through them....
Cheers
- rex bivouac
- Silver Wings
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Re: Supercharge engines for helicopters
Get a turbine.
- skypig
- 4th Dan
- Posts: 1705
- Joined: Nov 2005
Re: Supercharge engines for helicopters
I’ve never flown a turbo B47, but I’ve flown a turbine B47. Soloy CT18 conversion.
Less weight, more power. What’s not to like? (Apart from fuel flow.....)
Less weight, more power. What’s not to like? (Apart from fuel flow.....)
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- Gold Wings
- Posts: 116
- Joined: Jan 2014
Re: Supercharge engines for helicopters
How about WMI? that was used on many airframes during and after WWII.
No bucks? No Buck Rogers!
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