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richard(at)RILEY.NET
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 Posted: Fri Mar 31, 2006 3:11 pm Post subject: Questions for Bob N. April 1, 2006 |
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Eric M. Jones <emjones(at)charter.net> wrote:
| Quote: | 3) I have an idea for a really neat insect catcher, but first I need
to know: Can bats see an F117?
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No. See Aviation Week and Space Technology Oct 17, 1991
"An acoustic-guided submunition call the BAT may be good against tanks, but not against an F-117. A reader who works on the stealth fighter in Saudi Arabia says bats (the natural ones) occasionally work their way into F-117 hangars. One night, a hungry bat turned right into an F-117 rudder and fell stunned to the floor. He flew away groggily, leaving behind a heightened impression of the aircraft's stealth. "I don't know what the radar return is for the vertical tails of the F-117 but I always thought it had to be more than an insect's," the reader said. "I guess I was wrong." There may be some "science" in this - the ultrasound wavelengths used by bats are roughly the same as X-band radar. "
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ainut(at)hiwaay.net
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| Posted: Fri Mar 31, 2006 3:55 pm Post subject: Questions for Bob N. April 1, 2006 |
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If true, now that is some cool info!
David M.
Richard Riley wrote:
| Quote: |
Eric M. Jones <emjones(at)charter.net> wrote:
>3) I have an idea for a really neat insect catcher, but first I need
to know: Can bats see an F117?
No. See Aviation Week and Space Technology Oct 17, 1991
"An acoustic-guided submunition call the BAT may be good against tanks, but not against an F-117. A reader who works on the stealth fighter in Saudi Arabia says bats (the natural ones) occasionally work their way into F-117 hangars. One night, a hungry bat turned right into an F-117 rudder and fell stunned to the floor. He flew away groggily, leaving behind a heightened impression of the aircraft's stealth. "I don't know what the radar return is for the vertical tails of the F-117 but I always thought it had to be more than an insect's," the reader said. "I guess I was wrong." There may be some "science" in this - the ultrasound wavelengths used by bats are roughly the same as X-band radar. "
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yamokow(at)gmail.com
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| Posted: Fri Mar 31, 2006 6:52 pm Post subject: Questions for Bob N. April 1, 2006 |
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>3) I have an idea for a really neat insect catcher, but first I need
| Quote: | >to know: Can bats see an F117?
Fellas, fellas, fellas.... Most bats can see an F117 as well as you and I
can. Tsk, tsk. They have eyes you know!
Most bats echolocate using frequency modulation in the 20-200 kilohertz
range, although some use <20khtz so are audiible to us. What they can't do
well is process target texture and density information that hasn't been
previoulsy mapped either by an individual or by the group. Bats frequently
run into large man-made objects when placed in an entirely new articifial
environment, e.g., a hangar. Desert bats don't have a whole lot of
experience with airports, I guess. Sheesh...di I have to explain everything
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Bill Yamokoski, advising not to land yout plane in a cornfield in August
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