Simviation Forum - Turbocharging

Jun 2^nd, 2006 at 1:04pm

Sir Crashalot Ex Member

Hello all,

I have a question. I am trying to turbocharge the default C182. Not only to make it a little faster (I would like it to reach 160knts) but also to reach a higher altitude. Now I found out that changing the zero in: turbocharged= 0 //Is it turbocharged? 0=FALSE, 1=TRUE into 1 will provide a turbocharger (thanks Jakemaster) but what else do I need to change? All 'turbo' airplanes also have values for Max_design_mp and Min_design_mp. What do these values mean and what should I put there?

Thanks in advance.

Crash Wink

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Reply #1 - Jun 2^nd, 2006 at 2:22pm

wealthysoup Offline
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its basically how powerfull your turbocharger will be...I believe the lower the min_design_mp is and higher the max_design_mp is the more powerful your turbo will be...i think. Pick the standard cessna 208 grand caravans aircraft cfg and copy the turbo over from it...that should do for flying in the rockies

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Reply #2 - Jun 2^nd, 2006 at 2:31pm

Fozzer Offline
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An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

Quote:

its basically how powerfull your turbocharger will be...I believe the lower the min_design_mp is and higher the max_design_mp is the more powerful your turbo will be...i think. Pick the standard cessna 208 grand caravans aircraft cfg and copy the turbo over from it...that should do for flying in the rockies

Remember the Cessna 208 is a Turbo-prop aircraft with a turbine engine driving the propeller
Not a Piston prop aircraft with a turbo-charged reciprocating piston engine turning the propeller.... Wink

...!

Paul...I hate Turbo-Props... Wink

...LOL...

...!

A turbo-charger is is a belt driven, or exhaust driven air compressor fitted to a standard piston engine to force air under pressure into the manifold air intake to increase the engine's efficiency and therefore it's horse-power...
...it's done on motor car engines... Wink

...!

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Reply #3 - Jun 2^nd, 2006 at 4:47pm

Brett_Henderson Offline
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A turbine powered by exhaust gasses that in turn drives a turbine that pressurizes intake air is a turbo-charger.. if it's mechanically driven, it's a super-charger.

Realistic numbers for a Turbo 182 would be close to what I put in my 210..

turbocharged= 1
max_design_mp= 29
min_design_mp= 1
critical_altitude= 18000

You should up the max rpm by 100 too.

That simulates turbo-normalizing.. allowing higher altitutudes without wearing the engine out and slightly higher sea-level speed.

You can go nuts and make the max_design_mp=35 (or more) and get all kinds of power, but it's not realistic

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Reply #4 - Jun 2^nd, 2006 at 5:19pm

Sir Crashalot Ex Member

Thanks for your comments. Brett, I will try you suggestions. See what it will become.

Crash Wink

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Reply #5 - Jun 3^rd, 2006 at 6:21am

Fozzer Offline
Colonel
An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

Our Drag-Strip motor bikes are fitted with belt driven, or direct driven, Shorrocks or Roots Super-chargers as fitted to the 1934 Bently 4-1/2 litre car...
...and my 1931 Riley 9 Brooklands Grand Prix racing car... 8)...!

But for exhaust driven "Turbo-Chargers", look here...>>>

http://auto.howstuffworks.com/turbo.htm

Cheers all...!

Paul...Always in charge... Grin

...!

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Reply #6 - Jun 3^rd, 2006 at 9:00am

Sir Crashalot Ex Member

I put the numbers Brett suggested in the aircraft.cfg. It's working fine. I also increased the cylinder displacement to 95 cu. inches to get more speed out of it. Max altitude is now 20000 feet, speed is well over 160 knots. Flying the Rockies with ease.

Crash Wink

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Reply #7 - Jun 3^rd, 2006 at 10:24am

Brett_Henderson Offline
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Isn't it fun doing realistic modifications ?

(I always picture myself actually in a hangar, with the engine out and on a stand... me working on it .. lol)

I wouldn't have gone as far as upping the cylinder displacement though.. That's akin to putting a 210 engine in a 182.. (which is theoretically possible, but not worth the air-worthiness certification head-ache)..

29-30 inches of boost and an additional 100-150 (not 1000 - 1500) rpm would give you realistic, turbo Skylane performance... just as if you had done the modification on a real plane.

There are plenty of references out there for performance numbers.. Like when I started tinkering with t-charging the Baron. It' would have been easy to just "pump" up the MP and go faster. I wanted real-world numbers and performance.. I even went as far as modifying the MP gauge to read realistically.

On that note.. you can get the MP gauge out of my 210 (the original 2-D panel.. not the modified plane with a nice, but innacurate panel) and use it with your new, turbo 182 ..

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Reply #8 - Jun 3^rd, 2006 at 11:51am

Sir Crashalot Ex Member

Thanks, Brett. I downloaded your C210p and updated the panel of the 182. Working nicely this way.

Crash Wink

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