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[Fwd: Re: Birdstrikes !]

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dmp@TmedBSD.MCG.EDU wrote:
>>  From:          Jeff Barnes <jcbarnes@ibm.net>
>> What's that stuff they sandwich between our car windshields?  Would a
>> layer of that super-plastic or some such on inside of our windshield
>> markedly increase odds for survival against bird strike?  Or even
>> aluminum door screening: it doesn't block vision when eyes are focused

David Parrish wrote:
>> Metal screening of any kind would either obscure vision or wouldn't
be strong enough to do any good.<<<
-- Vision: You can see out your house windows can't ya?  But I agree
it's not so ascetic.
-- Strength: I don't know about that.  My daughter came by with her
100lb Rott/Labrador who DOVE rite thru my patio screen door with
original plastic screening.  Slowed him down a lot when he tried that
with the aluminum replacement and just bent it all up.  He didn't let up
after my daughter moved to a second story apartment in the Chicago.  He
put that move on an old window screen, going for a prankster cat on her
ledge and peter-panned it to the ground. (I can fly, I can fly, Woof,
Yelp).  Screen survived OK.  Finally he got smart (relatively
speaking).  Next time the cat came around, he just pushed the screen
aside and went on the ledge after him: of course he couldn't turn around
in the corner outside her window & caused my daughter fits getting him
back inside.  But he did have the final say.  The cat died laughing.  
> I'm not sure even the streachy plastic they use inside car
> windshields would do any good. There have been numerous cases of
> people going through windshields, even though most of the force is
> absorbed by the dash/steering wheel and speeds are often much less than 60 MPH at impact. Could a car windshield stop an five pound bird
> hitting at 200 MPH?

-- My Impala will stop a 10 or 20 pounder at 120: I'd didn't go back to
weigh the remains. How much do those spotted owls weigh anyway?  Aw come
on, it was just a pigeon or something.  Also think they'll stop a 200
pounder at 5 mph but haven't tested that.  They'll stop a 10 pound
chicken at 80mph for sure, as long as you thaw it out first.

> I don't remember the details of your strike, but did the windshield
> shatter? If it didn't then it did protect you against the bird. (I
> can't help that the plexi flexed enough to seperate from the fusalage
> and create a bird strainer. :) Maybe better bond between the
> windshield and the fusalage?

-- Carification:  It wasn't my strike but was written up in V-View#14.
The bird did make it into the cockpit.  Scary enough to make me start
this topic.  
> Fortunately for us, the Velocity windshield slopes enough that a lot
> of the force of impact gets vectored upwards. I suspect on a SQ2000
> it'd be BONG!! - 'What the heck was that?' and on a Cessna they'd be
> removing imbedded bird from the _back_ of your seat.
> ---
> David Parrish

-- Good side of vectoring the impact force is I'm thinking I don't need
that much material to stop the remains: just keep most of the plexiglass
shards out of my eyes with strecthy adhesive stuff.  But then again,
we've got a lot of juicy fat canadian geese in the midwest.

-- The down-side of deflection is the chance that the remains will take
out the prop, or of course bird could be going straight for the prop
anyway.  Prop a liability great on a Cessna: there I wouldn't worry at
all about bird parts.  I did near-miss (50 feet or so) a goose in a 150
once: not close enough to share my pepsi (sky diving TV commercial for
those building and not watching TV).  Enough to let me know you can't
always see them until it's too late if it's at dusk or they're ascending
up toward you.

>Never fly UNDER birds, they tend to dive when they think they need to >avoid something!!
  Hygene is another good reason.  But if they're above maybe there's
also a better chance of spotting them.

Bob Kuc wrote:
>>Maybe a button on the panel, when pressed, shoots a helmet on your head.  Due to the that force, a face shield would come down.
  Since most bird strikes, happens at low flight.  If an airport is know
to have a lot of birds near by, then a pre landing checklist of: harness
tight, speed brake down, helmet on, landing gear down, etc..... would be
in order.
  Seems like a cost effective solution, but it might mess up the hair. 
I wouldn't know much about that one, though.<<

Maybe helmet isn't overkill, but the complexity/cost of a helmet
deployment system I can justifystarting a Heads-Up display with a nice
piece of 10x12 reflective bullet-proof: I can just tell people I'm
waiting on the computer-guy to finish it.

Seriously tho (if that's possible), with the rite material, and the
effort of tinting a car-window, it might make a to-be or not-to-be
difference one day.    

Jeff Barnes

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