Birds during freefall...

Birds during freefall...

Post by Tom Bul » Sat, 27 May 1995 04:00:00


Hi,
   an interesting question arose from a non-diver at our gravity appreciation society meeting.

   What happens if there are birds around? Do you hit them?

   None of the typical 'can you beath on freefall' stuff here. I personally have never thought of it but what actually would happen? Are the birds smart enough to move, or do we have to slap them out of the way?

Tom.

 
 
 

Birds during freefall...

Post by Russ Menn » Sat, 27 May 1995 04:00:00

  ?
X-Newsreader: IBM NewsReader/2 v1.09

Quote:
> an interesting question arose from a non-diver at our gravity appreciation society meeting.
> What happens if there are birds around? Do you hit them?
> None of the typical 'can you beath on freefall' stuff here. I personally have never thought of it but what actually would happen? Are the birds smart enough to move, or do we have to slap them out of the way?

You mean to say - a bird would be able to SEE you falling straight down at 120mph?  NOT
You'd hit it.  Although I don't think the odds of hitting a bird are very good (err-
fortunately).  Slap it?  hmm  a new way to break ones hand! <g>

 
 
 

Birds during freefall...

Post by Valerio Antonio Conceic » Sat, 27 May 1995 04:00:00

Quote:

> Hi,
>    an interesting question arose from a non-diver at our gravity appreciation society meeting.
>    What happens if there are birds around? Do you hit them?
>    None of the typical 'can you beath on freefall' stuff here. I personally have never thought of it but what actually would happen? Are the birds smart enough to move, or do we have to slap them out of the way?
> Tom.

I think it's a matter of timming... Did you ever run over some bird while driving?
If you didn't, others did. The point is that the birds don't want to be hit, but
sometimes they are!

A while ago I posted about this same subject, and there were some reports on
injuries due to bird hitting in freefall. I believe it is rare, but it can happen!

BTW, do you use some AAD? This is surely a nice argument to do so!

Valerio

 
 
 

Birds during freefall...

Post by qx01.. » Sat, 27 May 1995 04:00:00

Quote:

> Hi,
>    an interesting question arose from a non-diver at our gravity appreciation society meeting.

>    What happens if there are birds around? Do you hit them?

In Freefall...................
In the EXTREMELY unlikely event that your path intersects with that of a
birds, the following will most probably happen;
1)      the bird is a deader, few birds match the mass of a jumper
2)      you too may be a deader depending on the mass of that particular bird,
        and where it impacts your body.
        Smacking a couple pounds of feathers with your face, and having a
        closing rate approaching 100 mph would not be fun.

Under canopy.............................

Again an unlikely event. I think that the statistically insignificant chance
of receiving a bird strike would be further diminished due to the fact that
any bird that noted your presence would avoid you at all costs.

In the food chain, a neon looking, noisy, flapping ZP kind of thing, would
definately appear to be the top predator.

BUT........................
I do remember seeing an old (late 70's) movie where a hangglider pilot had
trained some type of raptor to fly up to him and perch on top of his glider.
Don't believe me? maybe it's in the re. hanglider FAQ 8-).

I have tried to get my macaw to perch on my shoulder while canopy soaring,
but she wants no part of it.

kleggo

 
 
 

Birds during freefall...

Post by Tom Cahi » Sat, 27 May 1995 04:00:00

A couple years ago, just aroud break-off (3,000ft.), I was struck in the
chest by something that felt like a rotten apple. It really freeked me
because I wasn't used to hitting anything in freefall.  When I got to the
ground there was *** on my jumpsuit, and it wasn't mine!  When I was
hit I was in a two-way star with Tom Mclaughlin, so I asked him if he was
bleeding!?  He wasn't but he also had *** on one of his gloves.  We
determined it must have been a bird since nobody on the load was injured.
 The more I thought about this incident, the more scary it became....a
few inches higher, and It would have hit me square in the face......
suppose it was a big bird, like a goose or a duck!!  We can spot around
the really big birds (other aircraft), but it's close to imposible to
predict where the smaller ones are.  You hope birds will move as you wiz
past them, but at terminal velocity, to them, I'm sure we come out of
nowhere!!  Maybe we should wear some sort of sonic device to warn them,
like what you would put on your car to warn deer?  The chances are slim,
but I can tell you, first hand, it happens!

TC (TANDEM, I'95, D-14553)
"PARACHUTES ARE THE BEST WAY, SO FAR, TO RETURN TO EARTH SAFELY AFTER
FREEFALL."

 
 
 

Birds during freefall...

Post by Philip Yzarn de Lourail » Sat, 27 May 1995 04:00:00

Quote:

>Hi,
>   an interesting question arose from a non-diver at our gravity appreciation society meeting.

>   What happens if there are birds around? Do you hit them?

>   None of the typical 'can you beath on freefall' stuff here. I personally have never thought of it but what actually would happen? Are the birds smart enough to move, or do we have to slap them out of the way?

>Tom.

Most birds do not fly at the altitudes where we freefall, but do where our
chutes are opened and therefore, there have been very few collisions.

You would not be able to "slap them out of your way" because you are
falling at about 110-120 mph, and you usually do not look straight down.
--

 
 
 

Birds during freefall...

Post by RSHa » Sun, 28 May 1995 04:00:00

Watch out for them on takeoff, too.  We had just taken off in our Beech
today when the pilot dove the airplane to avoid a flock of geese.  He
managed to avoid most of them, but one hit the nose and one hit the engine
(cracked a cylinder).

He dove the plane about 50' when we were at about 100'-200'.  Very
exciting.  We were still able to climb to 7500' and get out normally.
When  he landed he checked the plane and found the damage.

To top it all off, we couldn't find the bird carcass, so we won't have a
fowl addition to the barbeque.

Rich Hall
D-12512

 
 
 

Birds during freefall...

Post by Tom Bul » Mon, 29 May 1995 04:00:00


Quote:

>> Hi,
>>    an interesting question arose from a non-diver at our gravity appreciation society meeting.

>>    What happens if there are birds around? Do you hit them?
>I think it's a matter of timming... Did you ever run over some bird while driving?
>If you didn't, others did. The point is that the birds don't want to be hit, but
>sometimes they are!

Nope, but does a rabbit count?

Quote:
>A while ago I posted about this same subject, and there were some reports on
>injuries due to bird hitting in freefall. I believe it is rare, but it can happen!

OK, I'll have to wear my full body armour ;-)

Quote:
>BTW, do you use some AAD? This is surely a nice argument to do so!

Certainly do. I wonder if you can ***on bird feathers?

Tom

 
 
 

Birds during freefall...

Post by Pierre Fontai » Mon, 29 May 1995 04:00:00

Quote:


>> Hi,
>>    an interesting question arose from a non-diver at our gravity appreciation society meeting.

>>    What happens if there are birds around? Do you hit them?

Are there so many birds flying at free fall altitudes anyway?

-My two "binary digits"

Quote:
>--- (O)--->>--- (O)--->>--- (O)--->>--- (O)--->>--- (O)--->>--- (O)--->


<--- (O)---<<--- (O)---<<--- (O)---<<--- (O)---<<--- (O)---<<--- (O)---<

 
 
 

Birds during freefall...

Post by David Parsons, Ph » Mon, 29 May 1995 04:00:00

A bit goulish, but....

'Interesting' thoughts I had a few years ago - if someone hit a bird in
freefall, the force would probably knock you out / kill you (?) wherever
it hit you, given the effects of a couple of hundred grams hitting you at
120 mph, and the transmissive effects of force on a "watery bag" (your
body).  Resultant no-pull might be (would be) put down to a skydiving
death for no apparent reason. Unlikely there would be any indication of
cause of death (unless it was suspected) since there would be no bird
carcass, likely no evidence of feathers, etc.  
It would obviously be a rare event, but it must happen sometimes.

Yet another reason for a Cypress?  

Anyone have any anecdotes / data?

PS:  I had these thoughts just after freefalling past (20 feet) a very
big bird - a glider, at the Oz Nationals, at about 8,000', tutoring a 6
way.  They go by FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFast!

 
 
 

Birds during freefall...

Post by George Orwe » Mon, 29 May 1995 04:00:00

Birds are smart.  They fly all there lives.  They have ears and eyes.  If
you listen to skydivers in freefall you can hear them.  120 MPH winds
going over jumpsuits makes a hell of a lot of noise.  Birds can hear us
falling and are quite good at getting out of the way.

It is rare but you can hit a bird.  It can be deadly as a bird makes a
formidable projectile at 120 MPH.

Skydivers have eyes also and when spotting should always look for
conflicting air traffic regardless of origin.

"Airhead"
D-8988

 
 
 

Birds during freefall...

Post by Tom Yat » Wed, 31 May 1995 04:00:00

There is a jumper at the DZ I go to who's known as the "birdman"
because he hit a bird in FF. I don't if the bird was injured, but
he said it was a helluva thump when he hit. Stop and think, you
slam into a bird weighing even just a half a pound or so and
you're talking about some pretty serious energy transfer. Assuming
you're at or near terminal you're talking about .5 lbs times something
over 150 feet per second. If the bird hits beak first it might just
drill right through you.<g>

tom
--
Tom Yates

*** Journalist - Eccentric - Budding Skydiver

 
 
 

Birds during freefall...

Post by Gregory Wrig » Thu, 01 Jun 1995 04:00:00



Quote:
>A bit goulish, but....

>'Interesting' thoughts I had a few years ago - if someone hit a bird in

Just thought I would relay an account of a recent jump.

On jump number 52, about three weeks ago, I had a nice
solo jump.  After the several failed attempts to get
my feet under me for an Iron Cross, I opened at 3k and
found myself face to face with a Bald Eagle. Very nice
indeed!  The Bald Eagle just followed me around as I
wandered around the sky. No matter how fast I turned
the eagle never seemed to move at all.  I got that same
feeling I get when I scuba dive, "I am way out of my
element."  

I just wonder if the eagle saw this big wounded animal
in the sky and was thinking lunch?  I would hate see
what it could have done to my canopy with those claws!

Later,
greg.

Quote:
>big bird - a glider, at the Oz Nationals, at about 8,000', tutoring a 6
>big bird - a glider, at the Oz Nationals, at about 8,000', tutoring a 6
>way.  They go by FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFast!

--

A-20947                  Sky Calls.  Thats All."
OS2OS2OS2OS2OS2OS2OS2OS2OS2OS2OSOS2OS2OS2OS2OS2OS2OS2OS2OS2OS2OS2OS2OS2