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British Airways Noserings!  
User currently offlineCX flyboy From Hong Kong, joined Dec 1999, 6598 posts, RR: 55
Posted (14 years 7 months 1 week 3 days 13 hours ago) and read 714 times:

Not as interesting a post, as the topic may suggest!

I have seen many BA 757s and 737s in new and old colours with a ring around the nosecone. They are black rings, so they stand out a lot against the new white scheme. Does anyone know their purpose?

I also saw a couple of their 767s in the old scheme with the chequered black and white circle on the nose. (Like the crash test symbol!!) I assume that it is something to do with the center of gravity along the longitudinal axis of the aircraft, but why?

4 replies: All unread, jump to last
 
User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 1, posted (14 years 7 months 1 week 3 days 13 hours ago) and read 612 times:

No one really nose (all puns intended) about the black unpainted ring around the nose most noticably on the 757. The weather radar is in there so we guess it is something to do with that.

The checkboard thing on the nose is another landing system I can not remember what it is called but one of the 757 has it also!
Iain


User currently offlineLH423 From Canada, joined Jul 1999, 6501 posts, RR: 54
Reply 2, posted (14 years 7 months 1 week 3 days 13 hours ago) and read 601 times:

Someone else posted this before, and if I recall correctly it has to do with lightning. Apparently the ring is painted with highly metallic paint, that due to the fibre-glass nosecone, if struck by lightning it would damge the RADAR inside. The paint acts as a deflector, and moves the electricity around the nosecone and RADAR.

LH423



« On ne voit bien qu'avec le cœur. L'essentiel est invisible pour les yeux » Antoine de Saint-Exupéry
User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 3, posted (14 years 7 months 1 week 3 days 8 hours ago) and read 580 times:

I was speaking to a pilot about it and he says it is not painted but an unpaited ring.
Iain


User currently offlineXXXX10 From United Kingdom, joined Jan 2000, 777 posts, RR: 0
Reply 4, posted (14 years 7 months 1 week 2 days 16 hours ago) and read 565 times:

ON BA 757 G-BIKK A BLACK & WHITE NOSE CONE WAS USED TO TEST THE MICROWAVE LANDING SYSTEM.THE CHEQURED PATTERN SHOWED AT WHAT ANGLE THE AIRCRAFT WAS WHEN PICTURED ON FINAL APPROACH

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