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16 votes

Is the DC-6 Supercharged? And what is a Turbosupercharger?

Yes, the DC-6 is supercharged with mechanically driven centrifugal superchargers. A “turbosupercharger” is another name for “turbocharger” which is an exhaust driven centrifugal supercharger. The DC-...
Mike Sowsun's user avatar
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12 votes
Accepted

Why does exhaust flow inwards through a radial turbocharger?

This has to fight against centrifugal force instead of leveraging it. In fact, the opposite is true. The arrangement shown actually helps to extract energy, perhaps counterintuitively. A typical ...
Sanchises's user avatar
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9 votes

Is the DC-6 Supercharged? And what is a Turbosupercharger?

From the Wikipedia entry on "turbocharger" (bolding added)1: The current categorisation is that a turbocharger is powered by the kinetic energy of the exhaust gases, whereas a supercharger ...
quiet flyer's user avatar
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9 votes

How common are gear-driven or belt-driven superchargers in modern aircraft?

Lycoming offered mechanical superchargers in some of their large 6 and 8 cylinder opposed engines like the GSO-480 but such engines have been out of production a long time. I would say the only ...
John K's user avatar
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8 votes
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Why do we lean the mixture in a turbocharged airplane (C182T)?

Turbo or not, you lean mostly because the mixture required for takeoff is far richer than necessary for lower power settings, even at sea level. Aircraft engines are partly air cooled and partly ...
John K's user avatar
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7 votes

In the modern aviation context, is the word "supercharger" generally assumed to mean a gear-driven system rather than an exhaust-driven system?

"Turbosupercharger" was General Electric's official term for their system, probably the first mass produced turbocharging system and was used on a range of US fighters and bombers (the system was very ...
John K's user avatar
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5 votes

Is the DC-6 Supercharged? And what is a Turbosupercharger?

Just to add a little more confusion (and amazing engineering)... Some piston engines were 'turbo-compounded'. This is when they used a turbine in the exhaust gas to add shaft power back to the engine ...
Rob McDonald's user avatar
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5 votes
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Does a diesel piston engine's power decrease more slowly with altitude than with an AVGAS engine?

Welcome to the community! Because the Austro Engine AE-300 is a diesel engine,(JetA/Kerosene and Diesel are very similar) it is equipped with a turbocharger. Turbochargers compress the engine's intake ...
JetCityMatt's user avatar
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5 votes

What is the difference between Full Throttle Height and Critical Altitude?

Bob Tait explains it perfectly: Every turbo charged engine has a rated boost which is the maximum manifold pressure permitted for that engine. It is marked as a red line on the manifold pressure ...
Aaron Holmes's user avatar
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5 votes

I overboosted an engine in a Mooney 231 - do I need to do an inspection?

This most likely warrants a call to Don Maxwell the veritable Mooney expert but I would for sure have the engine checked by a Mooney expert or someone that knows their way around the TSIO-360-GB. At ...
Dave's user avatar
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4 votes

I overboosted an engine in a Mooney 231 - do I need to do an inspection?

The relief valve may have failed. It's advisable to have that engine inspected as that kind of overboost can cause severe detonation and damage the engine. This may mean a complete tear down of the ...
Romeo_4808N's user avatar
4 votes

Is the DC-6 Supercharged? And what is a Turbosupercharger?

By the way, the centrifugal blower at the back of a radial engine served two purposes: it stirred up the fuel and air mixture to produce a uniform blend which was then presented to each intake runner ...
niels nielsen's user avatar
3 votes

Does throttle equal power on a turbocharged piston engine?

Throttle position in itself doesn't equal power on any piston engine. Power is a torque vs RPM, as in any engine. Aircraft piston engines, whether turbocharged or not, use manifold pressure, the ...
John K's user avatar
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2 votes

In the modern aviation context, is the word "supercharger" generally assumed to mean a gear-driven system rather than an exhaust-driven system?

Don't forget turbonormalizer - a turbocharger that only boosts to sealevel pressure. Seen on small planes. https://taturbo.com/tnvtc.html https://taturbo.com/177features.html
CrossRoads's user avatar
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2 votes
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Did any WWII aircraft only use a turbocharger but not a supercharger?

As is suggested in the original question, the answer appears to be "no". This website gives some hints as to why a gear-driven supercharger would normally be used in addition to a turbosupercharger: ...
quiet flyer's user avatar
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2 votes

Where do the compressed gasses of a charged engine goes?

As long as the rpm is kept up, the charge coming out of the compressor has quite a bit of inertial mass and is more or less flowing continuously even though there is a valve downstream opening and ...
John K's user avatar
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2 votes

Why does exhaust flow inwards through a radial turbocharger?

It does seem counterintuitive to arrange the flow as it has been done in turbochargers, but this arrangement is the best compromise for harnessing kinetic energy from exhaust gasses of a reciprocating ...
Jpe61's user avatar
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2 votes

How common are gear-driven or belt-driven superchargers in modern aircraft?

Radial engines like the P&W R-985 contain a geared impeller disc that centrifugally slings the fuel/air mixture around in the manifold from the carb out to the intake runners for each cylinder. ...
niels nielsen's user avatar
2 votes

Does a diesel piston engine's power decrease more slowly with altitude than with an AVGAS engine?

It is not because it is a diesel engine, though diesels are more likely to be designed that way. The engine is so called “flat rated”. That means its power is not limited by simply not being able to ...
Jan Hudec's user avatar
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1 vote

Turbocharged vs Turboprop cruise altitudes

As discussed here, piston engines are more efficient from a strictly power based comparison. Since you ask a slightly more specific question lets look at some operational numbers. Turbo Charged and ...
Dave's user avatar
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1 vote
Accepted

Does throttle equal power on a turbocharged piston engine?

As John K correctly explains, the relation between throttle position, or even manifold pressure, and torque or power is never linear. But I'd like to add one thing: If the engine power, and the ...
Jan Hudec's user avatar
  • 56.3k
1 vote

Does throttle equal power on a turbocharged piston engine?

Flight simulators used for aircrew training must replicate essential flight control behaviour, of which the throttle response is an important one. In flight sims this is implemented as follows: ...
Koyovis's user avatar
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1 vote

Does a diesel piston engine's power decrease more slowly with altitude than with an AVGAS engine?

It's all about the air compression! The graph that you mention shows two diesel/jetfuel geared piston engines, and one avgas direct drive piston engine, the Lycoming IO360. The two diesel engine ...
Koyovis's user avatar
  • 61.8k
1 vote

I overboosted an engine in a Mooney 231 - do I need to do an inspection?

WHAT? 50" for 20 seconds??? That's nuts! The first call should be to CMI. The engine user manual directs a user to see Continental Service Bulletin M67-12 after operation in a sustained overboost ...
acpilot's user avatar
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