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Started By
Message
re: A passenger airliner carrying 180 people has crashed in Tehran
Posted on 1/8/20 at 8:48 am to Tigeralum2008
Posted on 1/8/20 at 8:48 am to Tigeralum2008
quote:
Flying over warzones should be prohibited
Yeah but this plane took off from Iran. They still have planes flying in those countries.
0
Posted on 1/8/20 at 8:49 am to fightin tigers
quote:
That's a lot of Canadians.
Curious as to why so many Canadians on this flight.
More curious as to their original nationality.
Posted on 1/8/20 at 8:49 am to beaver
Convenient timing or deliberate? Very interesting.
Posted on 1/8/20 at 8:55 am to TH03
Photos coming out recently support theory of a SAM. Lots of shrapnel holes in the wings and fuselage. I was thinking uncontained engine failure a possibility as well.
Posted on 1/8/20 at 8:55 am to beaver
can't blame the Vincennes......
Posted on 1/8/20 at 8:57 am to BHM
quote:
Curious as to why so many Canadians on this flight.
My initial guess would be a group of missionary or relief individuals evacuating.
Posted on 1/8/20 at 8:57 am to terd ferguson
You idiots do realize the Iranians hate their government and are not the terrorists right?
Posted on 1/8/20 at 9:00 am to choupiquesushi
quote:
can't blame the Vincennes
Well if it's a reaction to that incident, you kind of could
Posted on 1/8/20 at 9:01 am to dawgfan24348
quote:
You idiots do realize that some Iranians hate their government and are not the terrorists right?
FIFY
Posted on 1/8/20 at 9:10 am to Sneaky__Sally
quote:a reaction to this incident would have been years ago and would have targeted americans(they've had many many many opportunities)
can't blame the Vincennes
Well if it's a reaction to that incident, you kind of could
Posted on 1/8/20 at 9:14 am to beaver
Oops
Posted on 1/8/20 at 9:25 am to Possumslayer
Why was a Ukrainian passenger plane flying over Iran anyways? Did it take off from Tehran?
This post was edited on 1/8/20 at 9:27 am
Posted on 1/8/20 at 9:56 am to Chieeefs
quote:
Why was a Ukrainian passenger plane flying over Iran anyways? Did it take off from Tehran?
Nope. It didn't even mean to be in Iran. It was 2,000 miles off course. The last known radio transmission was garbled, but it sounded like the pilot said "We're over the Middle WHAT?!"
This post was edited on 1/8/20 at 9:57 am
Posted on 1/8/20 at 10:02 am to dawgfan24348
quote:
You idiots do realize the Iranians hate their government and are not the terrorists right?
The best way to shut down a country's internal opposition is to provide an external threat. It gives the authorities an excuse to crush them while the undecideds rally around the flag.
Posted on 1/8/20 at 10:08 am to terd ferguson
quote:
82 less terrorists
Moron.
Since we're going with gross generalizations, I guess all Americans are fat and stupid as well, correct?
Posted on 1/8/20 at 10:12 am to AUTimbo
quote:
Not saying it wasn't an Iranian SAM but 737's with CFM 56 engines have had numerous issues with engine failures. Turbine blades have been snapping as they transit through 30-35K feet during initial climb. This could easily cause an uncontained failure which sends pieces of blades through the engine cutting fuel lines and starting a fire.
I got a question. I had saw a program or read somewhere, can't remember, that turbine manufacturers are starting to use inferior raw materials for the fan blades out of China. Possible crystalline structure and/or impurity issue.
Is this correct and/or what you're referring to?
This post was edited on 1/8/20 at 10:14 am
Posted on 1/8/20 at 10:13 am to jcaz
quote:
Photos coming out recently support theory of a SAM. Lots of shrapnel holes in the wings and fuselage. I was thinking uncontained engine failure a possibility as well.
After further info said the plane began its decent @ 8,000 ft I'm leaning back towards the SAM angle. Barring a birdstrike starting an uncontained catastrophic engine failure at that altitude, the SAM scenario makes more sense.
Posted on 1/8/20 at 10:17 am to nola000
quote:
got a question. I had saw a program or read somewhere, can't remember, that turbine manufacturers are starting to use inferior raw materials for the fan blades out of China. Possible crystalline structure and/or impurity issue.
The specs are so tight on those parts that I would be shocked.
Plus, one engine failing isnt likely to bring a plane down.
Posted on 1/8/20 at 10:23 am to RogerTheShrubber
quote:
The specs are so tight on those parts that I would be shocked
I want to say that's how they found the flaws.
I think it was a German company that noticed an issue in QC and then pulled the stock and examined the alloy structure and noticed the issues.
This post was edited on 1/8/20 at 10:24 am
Posted on 1/8/20 at 10:30 am to nola000
quote:
I got a question. I had saw a program or read somewhere, can't remember, that turbine manufacturers are starting to use inferior raw materials for the fan blades out of China. Possible crystalline structure.
While China is notorious for counterfeit parts, I'm not aware of the metallurgy in aerospace components being suspect, but I honestly don't know enough info on that subject. I do know the Chinese versions/copies have less reliable engine parts due to their lack of high end knowledge on modern aerospace forging methods, as a general rule.
The fracturing blades on the CFM engines are in the first couple stages (closest to the front of the engine). From what I have read/heard they never did actual engines testing at altitude on these engines and didn't find out about the problem until after the first few incidents of turbine blade failures. Problem has something to do with the harmonics/vibration of the blades as they are under full power and climbing into the 30-35K altitude where it occurs and the blades fracture about 1/2 to 2/3rd's up the airfoil going towards the tip. They basically shear off at this point.
Of course these are modern, forged blades and have much thinner, more curved profiles than in engines of the past, so are more susceptible to bad things happening, IMHO.
When it comes to engine failures 9 times out of 10 it will be on initial run-up on take-off and/or during initial climb, where engine is usually running at it's max thrust.
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