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What Are Those  
User currently offlineDavid B. From United States of America, joined Jun 2001, 3148 posts, RR: 5
Posted (12 years 12 months 1 day 6 hours ago) and read 1332 times:

On some planes I seen, a small long piece of metal protudes from the wing. I can't find a pic of it but seen it many times. Its located on the very end about a foot or two long. Im not sure if you understand what im talking about, but if you do, then you can answer my question:

What is that and what is used for?






Teenage-know-it-alls should be shot on sight
7 replies: All unread, jump to last
 
User currently offlineDavid B. From United States of America, joined Jun 2001, 3148 posts, RR: 5
Reply 1, posted (12 years 12 months 1 day 6 hours ago) and read 1273 times:

Is not a winglet, It looks sort of like a antanna.


Teenage-know-it-alls should be shot on sight
User currently offlineQantas737 From Australia, joined Jul 2000, 738 posts, RR: 4
Reply 2, posted (12 years 12 months 1 day 6 hours ago) and read 1268 times:

Do you mean the piece at the end of the wing of say for expample a 747-100/200/300? I have also been wondering what exactly that is for.

User currently offlineI Like To Fly From United States of America, joined Feb 2001, 1188 posts, RR: 2
Reply 3, posted (12 years 12 months 1 day 6 hours ago) and read 1262 times:

Are you talking about what was discussed here:
http://www.airliners.net/discussions/tech_ops/read.main/22499/4/

???

That would be my best guess. Smile


User currently offlineOPNLguy From , joined Dec 1969, posts, RR:
Reply 4, posted (12 years 12 months 1 day 5 hours ago) and read 1228 times:

Based upon your description, it sounds like either a fuel dump nozzle...


Click for large version
Click here for full size photo!

Photo © Peter D. Baumgartner



Click for large version
Click here for full size photo!

Photo © Richard Zeman



..or on the older 747s, and HF (high frequency) radio antenna...


Click for large version
Click here for full size photo!

Photo © Wilsam Cheung



If neither of these are it, any other details you can recall would be helpful...


User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 5, posted (12 years 12 months 18 hours ago) and read 1166 times:

Hi David B, Buzz here. I'm used to seeing the High Freq. radio antenna on the wingtips of the older 747's. Let's see, the old 707's had it pointing forward from the vertical fin...... so it could spear birds? (grin)
On 757's, 737's and 767's it's built into the leading edge of the vertical fin.
On DC-8's it was built into the top 5 feet of the vertical fin. I can't remember where it was on a DC-10.
Why use HF? because it's a (relatively) low frequency (2,5 -- 20 hz) and it bounces off the ionosphere for long range communication. The normal VHF radios are line-of-sight only, once you get 150 miles away you're out of sight....... that is if the Earth really is round.
HF radios are not easy to talk / listen on. Lots of things interfere with the signal you want to listen to. It's like listening to AM radio at night sometimes. But from the Pacific Northwest (USA) i can hear the Aussie BBC, and time signals from Ft Collins Colorado.
g'day


User currently offlineDavid B. From United States of America, joined Jun 2001, 3148 posts, RR: 5
Reply 6, posted (12 years 12 months 15 hours ago) and read 1133 times:

Yep, that little antanna was a HF antanna. THank you guys.


Teenage-know-it-alls should be shot on sight
User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 7, posted (12 years 11 months 4 weeks 1 day 23 hours ago) and read 1076 times:

Little? The thing is every bit of 4 ft long if its a foot.

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