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First With 'green Landings' SAS  
User currently onlineMortyman From Norway, joined Aug 2006, 4090 posts, RR: 1
Posted (8 years 1 month 2 weeks 1 day 1 hour ago) and read 2936 times:

First with 'green landings'

Scandinavian airline SAS has begun novel tests with reduced engine power to reduce noise and pollution.


Scandinavian airline SAS has begun novel tests with reduced engine power to reduce noise and pollution.
Norway's division, SAS Braathens, said that they will likely begin testing such environmentally friendlier landings next year. SAS Sweden began such tests in January 2006.

According to Swedish newspaper Aftonbladet, SAS is the first airline in the world to make such landings, which are similar to a glide into the airport. If all of SAS planes make such landings the company can reduce emissions equivalent to those from 20,000 automobiles in a year.

"We have as yet not carried out such landings in Norway, but we are definitely watching with interest what our Swedish colleagues have done. They can demonstrate very exciting results," SAS Braathens communication director Cathrine Foss Stene said.

The main advantage of such landings are pollution reduction, but noise reduction is also achieved.

"We are now studying the Swedish results to see if this should be tested with us. It may be relevant by next year," Stene said.

(Aftenposten English Web Desk/NTB)


http://www.aftenposten.no/english/local/article1526475.ece

8 replies: All unread, jump to last
 
User currently offlineJonty From United Kingdom, joined Jul 2004, 226 posts, RR: 0
Reply 1, posted (8 years 1 month 2 weeks 1 day ago) and read 2905 times:

are engines not normally kept at a higher power setting on landing in case the plane needs to go around? in that case could this not be dangerous?

User currently offlineCloudyapple From Hong Kong, joined Jul 2005, 2454 posts, RR: 10
Reply 2, posted (8 years 1 month 2 weeks 1 day ago) and read 2853 times:

Not first in the world - CDA (continuous descent approach) is in use at many other airports - mostly noise sensitive ones like Amsterdam and Heathrow (trial). Engines are left in idle power and no level off instructions from ATC - you basically fly the published vertical profile.


A310/A319/20/21/A332/3/A343/6/A388/B732/5/7/8/B742/S/4/B752/B763/B772/3/W/E145/J41/MD11/83/90
User currently offlineFFlyer From United States of America, joined Nov 2001, 733 posts, RR: 0
Reply 3, posted (8 years 1 month 2 weeks 23 hours ago) and read 2795 times:

I have experienced a "glide-in" approach and landing a few (?) times on early morning arrivals at CDG from the US. Most often on DL from JFK. Continuous, smooth descent up to the touch-down. This descent was started already some 45 - 60 minutes before the actual landing. Somehow beautiful in an early morning sunrise.

User currently offlineScoliodon From India, joined Oct 2005, 217 posts, RR: 0
Reply 4, posted (8 years 1 month 2 weeks 21 hours ago) and read 2665 times:

Quoting FFlyer (Reply 3):
"glide-in" approach and landing

Experienced a similar one..a silent smooth approach and a smoother landing on an LH A343 from DFW-FRA.



JFK-LGA-EWR-DTW-IND-PHX-CLE-SFO-LAS-SEA-ORD-MCO-MIA-DFW-ATL-CDG-FRA-BOM-MAA-DEL-TRZ-DXB-CLT-CVG-DEN-MSP
User currently offlineCloudyapple From Hong Kong, joined Jul 2005, 2454 posts, RR: 10
Reply 5, posted (8 years 1 month 2 weeks 21 hours ago) and read 2627 times:

Quoting Scoliodon (Reply 4):
LH A343 from DFW-FRA

Frankfurt has indeed published CDA procedures. Your experience may well have been a CDA Approach.



A310/A319/20/21/A332/3/A343/6/A388/B732/5/7/8/B742/S/4/B752/B763/B772/3/W/E145/J41/MD11/83/90
User currently offlineDavid L From United Kingdom, joined May 1999, 9545 posts, RR: 42
Reply 6, posted (8 years 1 month 2 weeks 21 hours ago) and read 2573 times:

More details on CDA here:

"Automatic Computer Control" Into SFO? (by Timz Oct 7 2006 in Tech Ops)


User currently onlineMortyman From Norway, joined Aug 2006, 4090 posts, RR: 1
Reply 7, posted (8 years 1 month 2 weeks 20 hours ago) and read 2540 times:

So, why is SAS claiming to be the first............Strange, I'd expect them to know whats old and new .............

User currently offlineBoeingOnFinal From Norway, joined Apr 2006, 476 posts, RR: 0
Reply 8, posted (8 years 1 month 2 weeks 20 hours ago) and read 2512 times:

Quoting Jonty (Reply 1):
are engines not normally kept at a higher power setting on landing in case the plane needs to go around? in that case could this not be dangerous?

There is a difference between "flight idle" and "ground idle". Talking about 737 in this case, but assuming that this is the same for other aircrafts due to safety. "Flight idle" has a slightly higher N1% than "ground idle", because ,as you mentioned, a go-around might me necessary, and "flight idle" gives faster spool-up time.



norwegianpilot.blogspot.com
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