747400sp From United States of America, joined Aug 2003, 4147 posts, RR: 2 Posted (10 years 11 months 1 week 1 day 13 hours ago) and read 6015 times:
When the design for the 787 started, as the 7e7. I read that it was going the meet stage 4 noise regulation. I was reading aviation weekly and they group the 787 as a stage 3. I know the 787 has new engines so I can see it being stage 4, also aviation weekly could have been in a rush to group it. So I would like to know what noise stage will the 787 be.
AerlingusEI521 From France, joined Mar 2005, 17 posts, RR: 0
Reply 9, posted (10 years 11 months 1 week 21 hours ago) and read 4679 times:
concerning the A32X family:
are the "new" airbus 32X ( i.e. those built recently) quieter than the earlier ones ( like the A320-100 or the firsts -200?). For instance, I know that the engines used for the 737NG are a bit different and quieter than those used for the 733-734-735... Does the same rule apply for the Airbus narrowbody family?
RayChuang From United States of America, joined Jun 2000, 8288 posts, RR: 4
Reply 11, posted (10 years 11 months 4 days 20 hours ago) and read 2896 times:
Given the extensive research done by GE Aero Engines and Rolls-Royce on reducing engine noise using acoustically-insulated engine nacelles and unusual nacelle designs, the 787 will easily meet not only the upcoming ICAO Stage 4 noise rules, but also easily meet the even stricter British Civil Aviation Authority Quota Count 2 noise abatement rules, also. That means the 787 could easily fly in and out of LHR and LGW on almost a 24-hour basis.
Orion737 From , joined Dec 1969, posts, RR:
Reply 12, posted (10 years 11 months 4 days 20 hours ago) and read 2881 times:
Stage 4? Soon jets will be permitted to make only equal noise to a hairdryer!
I like noisy jets like the 1-11, Trident and 732 not these whiners like the 321 which sounds like its crying when it takes off, mind you considering the size of the engines and the payload its carrying there is no suprise the 321 is crying!
Cornish From United Kingdom, joined Feb 2005, 8187 posts, RR: 52
Reply 13, posted (10 years 11 months 4 days 20 hours ago) and read 2868 times:
Quoting Orion737 (Reply 12): like noisy jets like the 1-11, Trident and 732 not these whiners like the 321 which sounds like its crying when it takes off, mind you considering the size of the engines and the payload its carrying there is no suprise the 321 is crying!
I'm guessing here that you aren't one of the many people that live under the flight paths of major airports then.
I'm an aviation enthusiast, but I for one living close to an airport am glad for the progress we have made in quieter technology.
Likewise I can still remember getting off a Malev Tu154 in the past having sat in the rear row and ended up with my ears ringing for days afterwards
Just when I thought I could see light at the end of the tunnel, it was some B*****d with a torch bringing me more work
Lemurs From United States of America, joined Mar 2005, 1439 posts, RR: 3
Reply 15, posted (10 years 11 months 4 days 16 hours ago) and read 2732 times:
Quoting Cornish (Reply 13): I'm an aviation enthusiast, but I for one living close to an airport am glad for the progress we have made in quieter technology.
Amen! I understand the rush of listening to those screamers take off, but it's one thing to go out to an airfield to enjoy the sounds when you know you can drive home, and another to have to live under the flight path of say 3 major airports like EWR-LGA-JFK.
Besides, I'm even more impressed at how quiet they've gotten the crazy powerplants. Considering the monster that the GE90 is, it's downright pleasant to listen hum at TO power.
There are 10 kinds of people in the world; those who understand binary, and those that don't.