Bird Strike question

[Hartington]

I assume that if a bird is sucked into an engine there's not much left of the bird spat out the other end. But does anyone know anything about how the bits of a bird might distribute themselves if, say, the bird hit the wing leading edge?

I ask because coming out of an office, this afternoon (16/5) hard by Junction 5 of the M4 (and thus not on the normal in or outbound routes for IATA but close to them and, just possibly, on a 27R overshoot path) I came across the leg (below the knee) and claw of a bird on the path as I walked to my car. Not a small claw/foot; given their spreading presence from the Chilterns I'm tempted to guess a Red Kite.

There are all sorts of other reasons why this might have appeared but it just set me wondering if an encounter with a plane might have been involved.

[DX Wombat]

Surely it would depend upon which part of the bird hit the aircraft?

[Bob Viking]

Does anyone have a copy of the photo of the seagull meeting a GR4 nose leg at speed? It might give you a good idea of how the bird would fare!
BV

[oldpax]

I recall two.One bird went into the port intake and straight through the skin into the undercarrige bay and made a right mes.The other one ,this one hit the nose cone and carried on through the pressure skinto the c..ckpit and bits went all round the bottom of the pilot,when it taxied in we thought the pilot was injured but it was just bird blood etc all over him!!Remember weight x velocity =lots of energy!!!

[DaveReidUK]

weight x velocity =lots of energy!!!

And weight x velocity² = even more :O

[StainesFS]

And weight x velocity² = even more[Pedant mode on]

Better still 1/2 x mass x velocity²

[Pedant mode off].

SFS

[Agaricus bisporus]

Bird in jet engine = shredded t w e e t.

I'll get my coat.


edit. I typed t w e e t without the spaces and the website turned it into "PPRuNe". How the f*&@ does that happen??????

Here it is - tweet - what I typed here was t w e e t

wtf?

[DaveReidUK]

Here it is - tweet - what I typed here was t w e e t

wtf?Standard feature of phpBB - mods can define certain words as taboo:

https://www.phpbb.com/about/features/?from=submenu#censor

Word Censors - Keep your board tame by implementing word censors and language filters to automatically eliminate or replace choice words or phrases.

[Burnie5204]

As one of the people that has to scrape the remains off the runway I can say that they dont look pretty when they've hit any part of the aircraft.

Sometimes if they hit the main airframe (say the top of the cockpit) then they make a bit of a mess but remain largely intact, or at least in one piece anyway. I they take a wingstrike then your best option is to start walking as the remains will be in many different pieces with feathers everywhere.

The only thing worse is the remains of a bird that has gone through the bypass.

As the person that cleans up the one we like most is a core ingestion - nothing is left except ash in the air. However, this is the biggest headache for Engineers, Pilots and Airline Ops planners as well as being the biggest risk to aviation safety and so is the one type that we absolutely want to avoid.

[Krystal n chips]

Every birdstrike is different.

Recovered a Harrier once where a seagull had entered the radome, then into the pressure bulkhead, coming to rest jamming the right rudder pedal. After about 10 days, when we arrived at the a/c, the significant remains were aromatic.

Hit a black back gull in a Rallye, dep Calais. Gull hit the engine fairing, dropped into the airflow, and then went between the slat and the wing.No damage, as such, but the gull was very much intact when we landed to check for damage.

There are so many factors involved here. I have seen plenty of dents, no damage as such, on commercial aircraft as an engineer, others, where the damage has been significant.

As for engine ingestion, you would be surprised just how many remains you find around the intake / first compressor stage.

What comes out of the back however, is not simply "ash"...for any bird that does make the full transit as it were, bits of engine invariably follow it out of the exhaust. I have also seen photographs of the subsequent deep strip of an engine, with bits of bird still visible at various stages of the engine.

[Burnie5204]

I did say 'what is left' as in what comes out the back

From core ingestions I've never found any remains or debris of ANY sort, nothing but ash in the air and that includes a Herring Gull down a 767 Number 2 Core. Engineers have found plenty but like I said in the first line - I'm only speaking from the aspect of the person that scrapes the mess off the runway and did say its a huge headache for the engineers.

[spannersatcx]

seen a few in my time, a lot are glancing blows off wings/fuselage which yend to be just blood splatter with the odd dent.

A few down engines, most don't end up with engine changes, the odd fan blade replacement, and the occasional engine change.

Had a birdstrike on a delivery test flt on a 747-8, cleaned up borescoped and it was fine.

http://farm4.staticflickr.com/3807/8754017925_692d71e488_c.jpg (http://www.flickr.com/photos/mark550d/8754017925/)


http://farm4.staticflickr.com/3832/8755136568_6d274d1c2a_c.jpg (http://www.flickr.com/photos/mark550d/8755136568/)


http://farm3.staticflickr.com/2830/8755132580_61ca7fc8e7_c.jpg (http://www.flickr.com/photos/mark550d/8755132580/)


http://farm9.staticflickr.com/8559/8754007185_ba2ba3a572_c.jpg (http://www.flickr.com/photos/mark550d/8754007185/)


http://farm8.staticflickr.com/7365/8754005189_7c8b8128db_c.jpg (http://www.flickr.com/photos/mark550d/8754005189/)