USairways 1549 had compressor stall a few days prior
- Thread starter mikecweb
- Start date
Chris Barnes
Well-Known Member
Did a search for compressor stalls and found the following on wikipedia - I wonder if the compressor stall that happened earlier was a result of previous damage to engine components?
http://en.wikipedia.org/wiki/Compressor_stall
Factors affecting compressor performance
Factors increasing compressor loads
http://en.wikipedia.org/wiki/Compressor_stall
Factors affecting compressor performance
- Damaged compressor components such as damaged blades. One of the most common causes of compressor stalls in commercial aviation aircraft is a bird strike. On take-off, while maneuvering on the ground or while on approach to landing, planes operate in proximity to birds. It is not uncommon for birds to be sucked into the intake of the engine and the disruption to the airflow and damage to the blades often causes compressor stall.
- Worn or contaminated compressor components - e.g. such as eroded rotor blades, seals or bleed valves.
- Mis-assembled compressor components - e.g. incorrectly assembled compressor guide vanes.
Factors increasing compressor loads
- Aircraft operation outside of design envelope - e.g. Extreme flight manoeuvre resulting in airflow separations within the engine intake. Flight within icing conditions where ice can build up within the intake or compressor. Engine thrust requirements too high for the operating altitude. (limited with modern fly-by-wire controls)
- Engine operation outside specified design parameters - e.g. Abrupt increases in engine thrust ("slam acceleration") causing a mismatch between engine components. (Occurrence reduced through the use of modern electronic control units)
- Turbulent or hot airflow to the engine intake - e.g. Use of reverse thrust at low forward speed, resulting in re-ingestion of hot turbulent air, or for military aircraft, ingestion of hot exhaust gases from fired missile.
- Worn or contaminated engine components - e.g. poorly performing control unit or turbine within an engine may result in a mismatch increasing the likelihood of stall.
Firebird2XC
Well-Known Member
FlyChicaga
Vintage Restoration
I just wanted to share this story.
A year ago I had my six month proficiency check with a former military pilot, who really wanted to give myself and my sim partner a learning experience. He threw a lot of things at us that really made me open my eyes as a young, relatively inexperienced Captain. One of those was compressor stalls after takeoff. It was violent, loud, and disorientating. However, it was a great learning experience.
He later told us that he save that same scenario to a line check airman at our company. A week after this check airman's proficiency check, he experienced a violent compressor stall while at cruise altitude over Cleveland. Apparently it was quite the experience, since people were screaming in back, a few people vomited in fear, etc. The crew performed an emergency descent and landing at Cleveland. The check airman had called this instructor to thank him for giving him the compressor stalls in the sim, because it gave him some experience to draw from when he experienced it for real. He said without that experience, he'd probably have been just as scared as everyone in the back of the airplane, since it was so violent.
A year ago I had my six month proficiency check with a former military pilot, who really wanted to give myself and my sim partner a learning experience. He threw a lot of things at us that really made me open my eyes as a young, relatively inexperienced Captain. One of those was compressor stalls after takeoff. It was violent, loud, and disorientating. However, it was a great learning experience.
He later told us that he save that same scenario to a line check airman at our company. A week after this check airman's proficiency check, he experienced a violent compressor stall while at cruise altitude over Cleveland. Apparently it was quite the experience, since people were screaming in back, a few people vomited in fear, etc. The crew performed an emergency descent and landing at Cleveland. The check airman had called this instructor to thank him for giving him the compressor stalls in the sim, because it gave him some experience to draw from when he experienced it for real. He said without that experience, he'd probably have been just as scared as everyone in the back of the airplane, since it was so violent.
beechpilot
Well-Known Member
Well, the reason my screen name is beechpilot is because 99% of my hours are in Beechcraft. I did all of my training and now teach in Beech Sierras/Sports etc and also fly Barons.
beechpilot
Well-Known Member
:rotfl::yeahthat:
jtrain609
Antisocial Monster
Wasn't DR was it?
Teller1900
Well-Known Member
Don't sell yourself short, Andy...you're a Hondo driver at heart. Besides, you know more about what's going on at Colgan than most of our pilots do!
beechpilot
Well-Known Member
It's too bad I'll probably never get to fly a 1900. I would have liked the chance to fly it. Everyone I've talked to that transitioned from it to a Q or a Saab misses it.
FlyChicaga
Vintage Restoration
Yeah, but Geraldo's idea of "investigating" involves heading down to the local high school locker room after football practice to sniff jock straps. I wouldn't read too much into anything that tools spews out of his pie hole.
-mini