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December 16th, 2007, 14:43
| #1 |
| Junior Member  Join Date: Sep 2006 Location: Dallas, TX
Posts: 125
  |  Windshield Heat & Birdstrikes? Here is a direct quote from the Beechjet 400 training manual: "Heating the windshield not only prevents the formation of ice, but also aids its bird strike resistance. For this reason, windshield, low heat should always be used during flight." How does window heat aid in bird strike resistance? The Beechjet's windows are electrically heated. My only guess is that having the heat on in some way increases the strength of the window. Brett  |
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December 16th, 2007, 15:00
| #2 |
| Senior Member  Join Date: Nov 2005
Posts: 603
| Re: Windshield Heat & Birdstrikes? My guess would be the glass is more brittle when very cold. |
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December 16th, 2007, 18:46
| #3 |
| Senior Member  Join Date: Mar 2003 Location: Warrensburg, MO/ KC, MO
Posts: 573
| Re: Windshield Heat & Birdstrikes? I would concur that a very cold windshield is more brittle than a warm one. Its why your windows on your car will crack if you pour hot water on them. I remember doing an experiment in a science class that illustrates this point as well. We froze a raquet ball with liquid nitrogen, and then lightly tapped it with a hammer. Its pretty amazing seeing a rubber ball shatter like glass.
__________________ "Life moves pretty fast, if you don't stop and look around once in awhile, you may miss it." |
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December 16th, 2007, 19:39
| #4 |
| Old Skool  Join Date: Feb 2007 Location: Pacific NW
Posts: 2,411
 | Re: Windshield Heat & Birdstrikes? Exactly. Window heat keeps the glass pliable.
__________________ "Humankind cannot stand very much reality." - T.S. Eliot |
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December 16th, 2007, 20:49
| #5 |
| Senior Member  Join Date: Aug 2006 Location: Everywhere
Posts: 1,105
| Re: Windshield Heat & Birdstrikes? In the Hawker, we have speed restrictions at low altitudes based on temperature UNLESS the windshield heat has been used for so many minutes.
__________________ Paid to wait.... Fly for fun! |
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December 17th, 2007, 00:39
| #6 |
| Junior Member Join Date: Sep 2006 Location: Dallas, TX
Posts: 125
| Re: Windshield Heat & Birdstrikes? Ahh...ok, yeah that makes sense! Thanks guys! -Brett |
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