Terrain Avoidance at Night

writes:

In some real planes, however, if you've been flying in cruise for
a while, and you quickly pull the power back hard for a fast
descent, you can cool the engine quickly and unevenly, causing
stress and eventual damage.

This seems to be more of a theory than an established fact, although
it seems plausible.

In any case, when flying over the Arizona desert, I don't think that
shock cooling of anything would be a major risk.

--
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Mxsmanic wrote:

writes:

In some real planes, however, if you've been flying in cruise for
a while, and you quickly pull the power back hard for a fast
descent, you can cool the engine quickly and unevenly, causing
stress and eventual damage.

This seems to be more of a theory than an established fact, although
it seems plausible.

In any case, when flying over the Arizona desert, I don't think that
shock cooling of anything would be a major risk.

That's because what your PC runs at the same temp no matter what game
you are "flying." In an actual airplane with an actual powerplant,
(especially with a blower), that can be a real concern, particularly w/
high performance powerplants, whether in Arizona or Siberia. Have a
nice day.

In any case, when flying over the Arizona desert, I don't think that
shock cooling of anything would be a major risk.

What is the temperature of the engine? What is the temperature of the
Arizona air at 10,000 feet? What do you get when you subtract the two?

Jose
--
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Jose writes:

What is the temperature of the engine? What is the temperature of the
Arizona air at 10,000 feet? What do you get when you subtract the two?

I give up. What are the actual numbers?

--
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Mxsmanic,

What is a shock-cooled engine?


donning flak vest

A myth.

Alternatively: The opposite of shock heating (e.g. during take-off)

--
Thomas Borchert (EDDH)

Trevor,

that can be a real concern, particularly w/
high performance powerplants, whether in Arizona or Siberia.


Well, I htink it would fair to admit that damage through shock cooling
is anything but proven.

--
Thomas Borchert (EDDH)

"RST Engineering" wrote in message
...
Oh, PLEEZE keep doing that. My kids need college money and I want a
Hawaii
vacation next year. I make a lot of money from shock-cooled engine work.

From what I've heard, shock cooling is not a big issue on the Grummans...
Considering the way that students fly the planes, if it was an issue, it
would have presented itself before... Maybe with some of the high
performance aircraft, it might be more of an issue...

wrote in message
ups.com...
Something that doesn't happen in MS flight sim.

And some might argue that it doesn't happen that much in real aircraft
either...

http://www.avweb.com/news/maint/182883-1.html

My previous engine went to around 3000 hours with typical student use of two
throttle settings -- on and off... No problem with shock cooling... It even
still had good compressions, but the insurance company had a problem with
students renting an engine that far past TBO... I took it off leaseback and
flew it myself for quite awhile before deciding I wanted the high
compression cylinder STC and going ahead and doing an overhaul on it...

Thomas Borchert wrote:

Trevor,

that can be a real concern, particularly w/
high performance powerplants, whether in Arizona or Siberia.


Well, I htink it would fair to admit that damage through shock cooling
is anything but proven.

Well it can be hard to "prove" what causes some problems, but I would give
the powerplant that hauls my butt the benefit of the doubt and stick with
the manufacturer's advice:
http://www.lycoming.textron.com/main...enCooling.html

or http://tinyurl.com/fgbq3

Trevor,

and stick with
the manufacturer's advice:


You know, I'm dubious. That would keep you from doing really useful
stuff like running lean-of-peak. What the manufacturer recommends is
largely dictated by legal and marketing departments.

--
Thomas Borchert (EDDH)