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Originally Posted by ABK MAN
(Post 354068)
this is interesting, this pinky size antenna ya'll speak of. Please elaborate, what would the techincal name be of such a contraption?
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Originally Posted by UAL T38 Phlyer
(Post 354093)
VLF--a frequency so low, the waves will actually propagate through earth---and water. The Navy uses it to communicate with subs, for National Command and Control of nuclear subs and ICBMs. The wavelength is something measured in miles (2-4; can't remember).
The wire is as fat as your pinky because it is about 2 miles long!! (So it needs to be that thick to support the weight of 2 miles of cable). I believe it is weighted-down with about a 50lb weight on the end, so, as the E-6B (TACAMO) circles overhead, making the weight almost stationary, the antenna wire scribes a cone above it--remaining almost vertical. I'm pretty sure each antenna is used one time, then snipped-off--too hard to reel back in. http://en.wikipedia.org/wiki/TACAMO http://www.fas.org/nuke/guide/usa/c3i/vlf.htm |
Originally Posted by UAL T38 Phlyer
(Post 354093)
I'm pretty sure each antenna is used one time, then snipped-off--too hard to reel back in. It gets reeled in most of the time. Takes 10-15 minutes. sometime it falls off due to icing, sometime it gets tangled (picture a fouled up fishing reel) and has to be snipped. |
Originally Posted by Clue32
(Post 353810)
We've got a maneuver in the Army called a flat turn and I'm wondering if anyone else in the flying world has cause to do them.
The goal is to turn 360 degrees in 12 minutes with out exceeding a 3 degree bank or 5 degree pitch. |
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