"Grindintosecond" (Grindintosecond)
05/08/2016 at 15:53 • Filed to: Planelopnik
6
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"Grindintosecond" (Grindintosecond)
05/08/2016 at 15:53 • Filed to: Planelopnik | 6
| 3 |
We see the flash, and then the power at work when the engine quits but the other is at full power strongly yawing the plane. It occured before the “V1" speed where anything would be taken into the air and dealt with there. Stopped safely. Noone hurt.
We also see the engine casing at work, designed to “contain” catastrophis failures like this inside.
Steve in Manhattan
> Grindintosecond
05/08/2016 at 15:59 |
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Engine manufacturers do a blade-off test on new designs - they blow off a blade to check the casing integrity:
f86sabre
> Grindintosecond
05/08/2016 at 16:59 |
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Yeah, that is no fun. You could see the differential in thrust almost instantly.
More details. Sulphidation corrosion is not unusual in these applications. It was not a fan blade failure, but internal to the engine.
The AAIB stated: “Laboratory analysis of the fractured blade root found multiple crack initiation locations caused by Type 2 Sulphidation corrosion. This led to high-cycle fatigue (HCF) propagation, weakening of the blade and subsequent material rupture in tensile overload. In addition, unidentified deposits were present on the surfaces of the blade remains which are the subject of ongoing analysis by the manufacturer.”
On Feb 12th 2015 the AAIB released an
amendment to their Bulletin
reading: “The failure of the HP turbine blade in this incident was caused by high cycle fatigue propagation due to surface damage as a result of Type 2 Sulphidation corrosion. During examination of the remains of the blade, to determine the cause of its failure, unidentified deposits were found on its surfaces. There was concern that these deposits may have been volcanic in origin, in particular from the 2010 eruption of Eyjafjallajökull in Iceland, so additional forensic analysis was carried out. That work was completed in August 2014 and did not identify compounds typically associated with volcanic activity. However, although an encounter with volcanic gaseous sulphur cannot be discounted it is concluded that the deposits probably are an accumulation of atmospheric dirt and pollutants.”
Rusty Vandura - www.tinyurl.com/keepoppo
> Steve in Manhattan
05/23/2016 at 15:19 |
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That would be a lot of English happening out on an airliner’s wing.