propilot83 From United States of America, joined Jan 2001, 545 posts, RR: 0 Posted (7 months 2 days 15 hours ago) and read 1950 times:
Now this is what I really love, when it comes to keeping a "green planet," clean environment for everyone, fuel efficiency, conservation, eliminating waste, and providing friendly skies for everyone. I'm a green person myself, but you gotta check out this video put out by Boeing, you know its amazing what technology can really do, when it comes to the array of sophisticated computers, electronics, and machines flying the Boeing 787 Dreamliner with great autopilot precision. Enjoy folks. I loved this video, go Boeing, green forever baby!
BA777 From United Kingdom, joined Jun 2001, 2139 posts, RR: 8 Reply 1, posted (7 months 2 days 14 hours ago) and read 1867 times:
This is otherwise known as continuous descent arrivals which many airlines in Europe are using now, but certainly a great idea although not possible in all airports yet.
IAHFLYR From United States of America, joined Jun 2005, 4723 posts, RR: 25 Reply 2, posted (7 months 2 days 8 hours ago) and read 1605 times:
Otherwise known these days in the U.S. as Optimized Profile Descents (OPD). OPD's are showing up around the country in places like Memphis, coming to an airport near you!
Any views shared are strictly my own and do not a represent those of any former employer.
IAHFLYR From United States of America, joined Jun 2005, 4723 posts, RR: 25 Reply 4, posted (7 months 2 days 6 hours ago) and read 1438 times:
Quoting JAAlbert (Reply 3): I wonder if this procedure is possible at SAN given the hills and buildings in the flight path?
IIRC they attempt to use a standard 3 degree path. The RNAV (GPS) RWY 27 at SAN has a slightly higher path at 3.14 degrees due to the obstacles, but at least from TOD to the PFAF a optimized decent path of 3 degree should be feasible.
Any views shared are strictly my own and do not a represent those of any former employer.
mel From Canada, joined Oct 1999, 1082 posts, RR: 13 Reply 6, posted (7 months 1 day 23 hours ago) and read 1123 times:
among the most inefficient descent profiles / standard terminal arrival procedures I have ever experienced are in Japan. For instance - flying Seoul-Tokyo usually requires descending towards a point nearly 70 miles due north of Tokyo, then turning right to heading 180 and continuing from there... a remarkably inefficient routing. If I can dig up a photo, i'll post it.
Some of these inefficient "staircase-type" arrival procedures are probably still required to curb airspace congestion or vertical obstacles (mountains)... and probably won't be improved for a long time.
In my experience, whenever you arrive into an airport that is not constrained by congestion or obstacles, you usually do get an efficient descent by ATC already.
tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80 Reply 7, posted (7 months 1 day 20 hours ago) and read 967 times:
Quoting traindoc (Reply 5): Is this the same as RNP (required navigation precision) which is being adopted by the airlines to expedite and simplify landing approaches?
Not exactly. Although you do need RNP to do these kinds of descents properly, RNP is just a standard for position determination, accuracy, and notifications of deviation of same.
What they're talking about here is a specific class of descent procedures that allow you to keep the engines at/near flight idle the entire way down. It's much more a change in ATC approach procedures than an inherent capability like RNP.
IAHFLYR From United States of America, joined Jun 2005, 4723 posts, RR: 25 Reply 8, posted (7 months 1 day 20 hours ago) and read 929 times:
Quoting tdscanuck (Reply 7): Not exactly. Although you do need RNP to do these kinds of descents properly, RNP is just a standard for position determination, accuracy, and notifications of deviation of same.
With the most respect Tom, I have to slighty disagree. The ODP's in MEM have conventional routes that mirror the RNAV routes. While I agree an aircraft and crew that is RNP certified will certainly tighten up the lateral and vertical path, they can still be accomplished and be almost as if not as efficient without RNP capabilities.
Just a guess, but MEM probably had to consider the conventional overlays due to the remaining Delta DC9's and FedEX 72's.
Any views shared are strictly my own and do not a represent those of any former employer.
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