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Spinner strobing as a "Bird Strike Countermeasure"



 
 
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  #1  
Old December 2nd 07, 11:09 PM posted to rec.aviation.piloting,rec.aviation.homebuilt
Jim Logajan
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Posts: 1,958
Default Spinner strobing as a "Bird Strike Countermeasure"

The following thread on the Van's Air Force web site was of general enough
interest that I thought it worthwhile to bring it to the attention of other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)
  #2  
Old December 2nd 07, 11:18 PM posted to rec.aviation.piloting,rec.aviation.homebuilt
Blueskies
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Posts: 979
Default Spinner strobing as a "Bird Strike Countermeasure"


"Jim Logajan" wrote in message .. .
The following thread on the Van's Air Force web site was of general enough
interest that I thought it worthwhile to bring it to the attention of other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)


I wonder about doing the candy stripe spiral on them, or painting the blades different colors...


  #3  
Old December 2nd 07, 11:30 PM posted to rec.aviation.piloting
Bertie the Bunyip[_19_]
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Posts: 3,851
Default Spinner strobing as a "Bird Strike Countermeasure"

Jim Logajan wrote in
:

The following thread on the Van's Air Force web site was of general
enough interest that I thought it worthwhile to bring it to the
attention of other pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still
be strikes with inattentive and near-sighted birds. ;-)


Hmm, couldn't hurt!


Bertie
  #4  
Old December 2nd 07, 11:31 PM posted to rec.aviation.piloting
Bertie the Bunyip[_19_]
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Posts: 3,851
Default Spinner strobing as a "Bird Strike Countermeasure"

"Blueskies" wrote in
t:


"Jim Logajan" wrote in message
.. .
The following thread on the Van's Air Force web site was of general
enough interest that I thought it worthwhile to bring it to the
attention of other pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would
still be strikes with inattentive and near-sighted birds. ;-)


I wonder about doing the candy stripe spiral on them, or painting the
blades different colors...



No, that woudl cause people to become hypnotised and walk into the prop.


Haven't you ever watched Batman?

Bertie
  #5  
Old December 3rd 07, 12:02 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Maxwell
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Posts: 1,116
Default Spinner strobing as a "Bird Strike Countermeasure"


"Blueskies" wrote in message
t...

"Jim Logajan" wrote in message
.. .
The following thread on the Van's Air Force web site was of general
enough
interest that I thought it worthwhile to bring it to the attention of
other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)


I wonder about doing the candy stripe spiral on them, or painting the
blades different colors...


There is a design used on the American Airlines (and perhaps others) high
bypass engines that is reported to be effective too. Might check it out at
airliners.com or something. Considering visibility difference and rotation
speed, the design you are testing appears even more visible. My guess is, it
will work.






  #6  
Old December 3rd 07, 12:08 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Maxwell
external usenet poster
 
Posts: 1,116
Default Spinner strobing as a "Bird Strike Countermeasure"


"Maxwell" wrote in message
...

"Blueskies" wrote in message
t...

"Jim Logajan" wrote in message
.. .
The following thread on the Van's Air Force web site was of general
enough
interest that I thought it worthwhile to bring it to the attention of
other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still
be
strikes with inattentive and near-sighted birds. ;-)


I wonder about doing the candy stripe spiral on them, or painting the
blades different colors...


There is a design used on the American Airlines (and perhaps others) high
bypass engines that is reported to be effective too. Might check it out at
airliners.com or something. Considering visibility difference and rotation
speed, the design you are testing appears even more visible. My guess is,
it will work.


http://tinyurl.com/2yjh2c



  #7  
Old December 3rd 07, 12:59 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Roger (K8RI)
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Posts: 727
Default Spinner strobing as a "Bird Strike Countermeasure"

On Sun, 2 Dec 2007 17:02:07 -0600, "Maxwell"
wrote:


"Blueskies" wrote in message
et...

"Jim Logajan" wrote in message
.. .
The following thread on the Van's Air Force web site was of general
enough
interest that I thought it worthwhile to bring it to the attention of
other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)


I rate this things right in there with the old ultrasonic deer
whistles you put in your car grill. Driving down the road was supposed
to put out a noise to scare the deer. Somebody made a small fortune on
those before they proved they don't work.


I wonder about doing the candy stripe spiral on them, or painting the
blades different colors...


There is a design used on the American Airlines (and perhaps others) high
bypass engines that is reported to be effective too. Might check it out at
airliners.com or something. Considering visibility difference and rotation


That's used to let people on the ground know if the engine is still
turning. An engine coasting to a stop is nearly silent and is silent
if you are out on the ramp wearing hearing protection.


Roger (K8RI)

speed, the design you are testing appears even more visible. My guess is, it
will work.





  #8  
Old December 3rd 07, 01:03 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Roger (K8RI)
external usenet poster
 
Posts: 727
Default Spinner strobing as a "Bird Strike Countermeasure"

On Sun, 02 Dec 2007 22:09:30 -0000, Jim Logajan
wrote:

The following thread on the Van's Air Force web site was of general enough
interest that I thought it worthwhile to bring it to the attention of other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147


At cruise RPM that effect would be completely lost. There's not a
bird or human alive that can discern stroboscopic effects of more than
a couple hundred cycles let alone over a 1000. Most of us can't even
discern 60 cps.

Roger (K8RI)

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)

  #9  
Old December 3rd 07, 02:17 AM posted to rec.aviation.piloting, rec.aviation.homebuilt
[email protected]
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Posts: 8
Default Spinner strobing as a "Bird Strike Countermeasure"

On Dec 2, 5:59 pm, "Roger (K8RI)" wrote:
On Sun, 2 Dec 2007 17:02:07 -0600, "Maxwell"
wrote:

That's used to let people on the ground know if the engine is still
turning. An engine coasting to a stop is nearly silent and is silent
if you are out on the ramp wearing hearing protection.

Roger (K8RI)


Incorrect. The spiral on the fan hub is a bird deterrent measure. It
has nothing to do with ground personnel.
  #10  
Old December 3rd 07, 02:39 AM posted to rec.aviation.piloting,rec.aviation.homebuilt
Mike Noel
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Posts: 206
Default Spinner strobing as a "Bird Strike Countermeasure"

True, but aren't we talking about 40 cps when the prop RPM is 2400?

--
Best Regards,
Mike

http://photoshow.comcast.net/mikenoel

If any question why we died, tell them, "Because our fathers lied."
- Rudyard Kipling.
"Roger (K8RI)" wrote in message
...
On Sun, 02 Dec 2007 22:09:30 -0000, Jim Logajan
wrote:

The following thread on the Van's Air Force web site was of general enough
interest that I thought it worthwhile to bring it to the attention of
other
pilots:

http://www.vansairforce.com/communit...ad.php?t=24147


At cruise RPM that effect would be completely lost. There's not a
bird or human alive that can discern stroboscopic effects of more than
a couple hundred cycles let alone over a 1000. Most of us can't even
discern 60 cps.

Roger (K8RI)

Would be quite useful if it really worked. Of course there would still be
strikes with inattentive and near-sighted birds. ;-)



 




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