AT From United States of America, joined Jul 2000, 1050 posts, RR: 0 Posted (14 years 3 months 1 week 1 day 2 hours ago) and read 1296 times:
A few weeks ago I was at Heathrow and I noticed the strangest thing:
A British Airways Airbus 320 with NO winglets!! At first thought I must be imagining, but it was definitely a 320, not a 737.
What is going on? ? ? Is this some early production model I am unaware of?
And on the topic of winglets, I have brought this up before but no feedback: why does the 777 have no winglets, given that all other modern widebodies do???
Qantas737 From Australia, joined Jul 2000, 738 posts, RR: 4
Reply 1, posted (14 years 3 months 1 week 1 day 2 hours ago) and read 1259 times:
I don't know anything about the A320 or the B777. But I've heard the 2m high winglets on the B747-400 don't counteract the wingtip vortices like they are supposed to. Maybe this is why the B777 doesn't have it. Correct me if I'm wrong people.
CYLW From Canada, joined Apr 2000, 438 posts, RR: 0
Reply 2, posted (14 years 3 months 1 week 1 day 1 hour ago) and read 1253 times:
The first A320s didn't have winglets. According to the July Airliner World the some (possibly all) -100 series didn't have winglets. After c/n 021 the -200 became the production standard (with winglets). Not sure if all the -100s are winglet-less, but G-BUSB pictured in the article definately doesn't.
FLY777UAL From United States of America, joined May 1999, 4512 posts, RR: 3
Reply 3, posted (14 years 3 months 1 week 1 day 1 hour ago) and read 1252 times:
The A320's which you saw were, just as you thought, early-build A320's, the A320 series 100, of which a very small number were built (BCal receiving the -100 version, which were passed on to BA).
The 777 wasn't designed with winglets, as its wing is so large and so advanced that they just weren't necessary for the main type of routes that they were designed for. I believe that the new 777-200LR and 777-300ER will have the raked wingtips as are on the 767-400.
Oxygen From Hong Kong, joined Sep 1999, 674 posts, RR: 1
Reply 5, posted (14 years 3 months 1 week 23 hours ago) and read 1220 times:
I read in a book that winglets are used to squeese extra performance from some earlier designed wing.
Since the 777 wing is so new, they don't need winglets because the wing itself is sufficiently efficient.