De-Conflicted and efficient 4D Trajectories through a Centralised Service

Recently I have had a very interesting discussion about the future of air traffic management with a person who has for a long time studied future concepts to improve efficiency in Air Traffic Control.

4D trajectory: Image embedded from www.onera.fr

I was in Bucharest on a 2 day trip to give presentations about ATM and ATC from an operational perspective to Aeronautical Engineering students at the Polytechnic University of Bucharest. The vice dean, who has read a PHD in 4D Trajectories Optimisation started a discussion on what the vision may be regarding 4D trajectories and on the computing of the most efficient trajectories for flights in terms of energy consumption and time.

He said that whereas he agreed with the common concept that the key towards further efficiencies in the above mentioned areas is to be able to push the traffic situation into proactive management of already de-conflicted situations (eventual gate-to-gate precision trajectory clearances) rather than legacy reactive / tactical ATC based achievement of separation, there were two elements that needed to be enforced. These were:

  • The idea that the trajectory of flights which are at once both de-conflicted from other flights and also the most efficient, should be entrusted to a centralised ground system, and
  • Secondly, that the main criteria for the most efficient trajectory was one based on time and fuel consumption and not on distance covered (that the most efficient route might not be the shortest one).

1. Ground based centralised de-conflicted and efficient precise trajectory clearance:

The idea makes sense, the system should be based on a centralised processor that analyses all flight requests and parameters stemming from all ANSPs and proposes the best trajectory to flights. The term best would be defined as a trajectory which would be de-conflicted from all other flights and most efficient. ATC would be then responsible for monitoring the flight and to act on last minute changes due to unforeseen circumstances. The efficient trajectory would be based on meteorological reports and forecasts, thus making the best use of prevailing winds, etc.

In this model, the Reference Business Trajectory for a flight would be prepared by a centralised regional service based on information from various stakeholders including ANSPs and weather services. The RBT would then be accepted by the airspace user who would fly it knowing it has a high degree of stability (it would not be likely to suffer major revisions whilst in flight), and being the most efficient.

This idea to me makes sense as it marks an evolution of the direction the management of the ATM network has been taking, from Flow Control, to Network Management to perhaps Enhanced Network Management. History has shown that a centralised responsible body, pushed and governed by its stakeholders (such as the case of CFMU and NM) are the most efficient responses to unleashing and enforcing the necessary situations to improve flight efficiency.

2. It is about time and fuel consumption and not distance

 Aircraft with sails. Image courtesy of blog.flying-hobby.net

The second aspect that I found quite innovatory in this discussion I had is that efficiency should be seen in terms of flying time and in terms of energy consumption and that this does not always correlate with distance covered.

The way things are presented today is that the closest we get to the great circle in terms of distance covered between two airports, the more efficient our flight is. But this may not be true if to fly the great circle one ignores wind, for example. (If a head wind component is more important for a given flight, should it fly a great circle trajectory than it would be if the flight steers away from this great circle trajectory into more favourable wind and therefore saves more fuel and/or arrives earlier to destination by doing so – a bit like the case of a boat that has to choose between navigating against the current for a direct route or to let the current steer it in terms of maritime navigation. We need to become more sophisticated when talking about flight trajectory efficiency and how we calculate it. Is it the distance covered? (as we see it shouldn’t be), is it the flying time? Or the energy used to fly? (possibly it should be a calculation based on the component of the last 2).

The above for me is very simple to understand, yet it seems to me as a break through as we always tend to talk about trajectory inefficiencies based on the deviation from the shortest (distance) route and then by computing the fuel and/or time lost as a direct conversion of the distance, whereas what we need to be talking about is on how to make trajectories to be agreed based on the knowledge of winds and of engine performances.

The above seems to me more feasible to be achieved using a centralised service rather than a scattered one. In terms of applicability in the near future I see also that in terms of phases of flight, it may still be difficult to manage these type of trajectories in terminal airspaces and in and around airports, because the incognita in these areas seem to me still too complex to compute and manage (from passengers arriving late to the gate to GA traffic making unpredicted manoeuvres in the air and airside vehicles on the ground.)  However, I could imagine a centralised service presenting on behalf of ANSPSa trajectory contract of this type to the flight in question, based on the current situation and de-conflicted from other traffic from the moment the flight leaves the terminal area of departure to the point it arrives to the terminal are of arrival as something that if worked upon could be made feasible in a foreseeable future (This close to Sesar’s Operational Improvement Step:” Use of Free Routing from Terminal Area Operations-exit to Terminal Area Operations-entry” but rather than ‘free routing’ we should be aiming for a de-conflicted and optimum-efficient precision trajectory clearance from Terminal Area Operations-exit to Terminal Area Operations-entry)

I think this, based on a centralised service and on a real time system wide information management exchange and on the concepts of de-conflicted precision trajectory clearances  which are optimum efficient in terms of a computation of time and fuel consumption, should at least make the base for a serious study into feasibility and into a shared operational concept...

Such was my discussion in Bucharest. I went to teach and as often happens, I came back feeling I have learnt something very significant about the future of air traffic management!

Clomid For Sale

Clomid For Sale, Almost a decade ago now, (SES1 was adopted in october 2001), the idea of the FABs came by. The European Commission wanted EU member states to create functional airspace blocks in upper european airspace which do away with constraints due to national boarders and improve the efficiency and cost effectiveness of the European ATM system, Clomid canada, mexico, india. My Clomid experience, During SES1, the commission left the intitiative to its member states and alliances between states and their ANSPs were happening slowly, herbal Clomid. Doses Clomid work, In 2008, with SESII and seeing that nothing much had happened since, Clomid from mexico, Clomid street price, the revised regulation stated that each member state should be part of a FAB by 2012.

With this rate, Clomid used for, Clomid gel, ointment, cream, pill, spray, continuous-release, extended-release, if ever this will happen, the first FABs will operate at least a decade and a half after their inception - And it is still to be proved that they will bring with them the advocated gains in efficiency and cost effectiveness, kjøpe Clomid på nett, köpa Clomid online.

But what makes me somewhat wonder is their name:  Functional, Clomid For Sale. Clomid alternatives, To get neighbouring states to work together through a regulation, is that really functional or is it more Political, discount Clomid. Clomid trusted pharmacy reviews, If they were really to be 'functional' why limit the agreements to neighbouring states on upper airspace?  For me, it would be more functional if for example:


  • All the oceanic centres: Scotland, Clomid dangers, Canada, mexico, india, Ireland, France and Portugal would join into one block, Clomid pics. Clomid mg, They have the same function, they can gain economy of scale for providing the same service with same expertise, Clomid duration, Is Clomid addictive, same structure, same equipment...

  • Or why would airports of a similar scale and traffic type not come together?  For example all hub airports: Heathrow, cheap Clomid, Clomid price, Roissy, Frankfurt, ordering Clomid online, Clomid over the counter, Schiphol...do they not have the same function?  Similar management of traffic, of information, where can i buy Clomid online, Clomid images, similar equipment and expertise. Would that not bring added value to the system?

  • Or why lower airspace for stong citypairs E.g, Clomid price, coupon. Frankfurt - Paris  not come together and optimise the flow?

Clomid For Sale, Well, I am not saying that these have to be the solutions, as this is exactly the point. Generic Clomid, A function should be defined depending on a particular need and not simply say that there is only one function and that this is an agreement between neighbouring states for upper airspace.

Real functional blocks would happen when two partners come together and describe the function they will make more efficient by working together.., buy Clomid online no prescription. Where can i buy cheapest Clomid online, Then there is the other conundrum: Is the commission for a liberlised market that would look for efficiencies and for consolidation by itself. Or is it for intervening directly on composition and structure of operations?  I thought it was more of the former, Clomid pharmacy, Order Clomid from mexican pharmacy, but in FABs it is acting more like in the latter. To me it seems it is a hybrid solution which is will not lead too far, Clomid For Sale.

ANS provision should be liberalised, order Clomid from United States pharmacy. Clomid samples, The European union should build a strong safety regulatory framework and should federalise regulation. It should push States to liberalise their ANSPs, buy generic Clomid. Cheap Clomid no rx, In this way the stakeholders of the ANS system (e.g. Clomid For Sale, Airlines) could directly buy shares into ANSPs and drive them to efficiency and cost effectiveness (while being obliged to follow European regulation). It would even allow them to earn from service charges!  Why does the commission push through regulation the creation of Functional airspace blocks (which are NOT functional) and yet allow states (like Ireland for example) with service provision and regulation still under the same corporate structure, Clomid from canadian pharmacy. Purchase Clomid, (e.g. the Irish Aviation Authority)

To conclude:

Functional Airspace Blocks are not functional they are Political, japan, craiglist, ebay, overseas, paypal. Purchase Clomid online, Political Airspace Blocks are not Functional but Unfunctional.

So instead of FABs we have P[olitical] U[nfunctional] B[lock]S, effects of Clomid. Buying Clomid online over the counter, And now it is time for a drink...to forget our sorrows.

Similar posts: Buy Phenergan Without Prescription. Buy Cephalexin Without Prescription. Buy Augmentin Without Prescription. Colchicine For Sale. Amoxicillin For Sale. After Ultram. Low dose Levaquin. Get Bactroban. Buy generic Aricept. Where can i buy cheapest Celebrex online.
Trackbacks from: Clomid For Sale. Clomid For Sale. Clomid For Sale. Clomid For Sale. Clomid For Sale. Clomid dangers. Order Clomid no prescription. Where can i find Clomid online. Is Clomid addictive. Clomid long term.

Buy Ultram Without Prescription

Buy Ultram Without Prescription, 13 months after Volcano '10, it is time for  its sequel: Volcano '11

Last year it had starring Eyjafjallajokull, this year Grimsvotn.  Both of Icelandic origins. Ultram class, Both virile and powerful.

Volcano '10 knew its success thanks to a spree of bad luck, australia, uk, us, usa, Ultram for sale, which blew its plume down SW, an uncoordinate European scene, Ultram description, Ultram no prescription, where everyone tried to put the responsiblity on everyone else and where, if it wasn't for Eurocontrol, where can i find Ultram online, Buy no prescription Ultram online, it could have ended much worse, and on regulation and on airlines which were not prepared for the event, Ultram overnight. Real brand Ultram online, Now, 13 months later, what is Ultram, Ultram schedule, Europe has a Network Manager, and service providers, Ultram dosage, Ultram from canada, national regulators and airlines should have had time to learn from last year's shortcomings, will the situation be better, rx free Ultram. Buy Ultram without prescription, (Note: there is no magical solution for major bad luck)

As I am writing, there are no immediate airspace closures to be announced, Ultram blogs, Ultram maximum dosage, however there are some reports prediciting possible closures of UK, French and Spanish airspace starting from Tuesday 24th of May, Ultram treatment, Japan, craiglist, ebay, overseas, paypal, should eruptions continue with similar intensity. Extract from Eurocontrol Network Operations' Portal: https://www.public.cfmu.eurocontrol.int/PUBPORTAL/gateway/spec/index.html

"CFMU have been adviced by Icelandic met office that there has been a volcanic eruption of volcano Grimsvotn in Iceland at 20110521 1900Z, Buy Ultram Without Prescription. The plume hight estimated by radar 15-17 km, purchase Ultram online. Where can i buy cheapest Ultram online, ASH CLOUD IS EXPECTED TO REACH NORTH SCOTLAND ON TUEDSDAY 24TH MAY.
IF VOLCANIC EMISSIONS CONTINUE WITH SAME INTENSITY CLOUD MIGHT
REACH WEST FRENCH AIRSPACE AND NORTH SPAIN ON THURSDAY 26TH MAY, Ultram from mexico. Ultram dangers, NO AIRSPACE CLOSURES ARE EXPECTED FOR TODAY AND TOMORROW EXCEPT IN ICELANDIC AIRSPACE/AERODROMES.". Online Ultram without a prescription. Ultram from canada. Ultram alternatives. Ultram images. Purchase Ultram for sale. Ultram interactions. Ultram no prescription. Ultram for sale. Where can i cheapest Ultram online. Fast shipping Ultram. Ultram long term. After Ultram. Ultram recreational. Ultram without prescription. Ultram dose. Ultram duration. Buy cheap Ultram.

Similar posts: Hydrochlorothiazide For Sale. Buy Ketoconazole Cream Without Prescription. Wellbutrin SR For Sale. Buy Soma Without Prescription. Cialis For Sale. Buy cheap Inderal no rx. Fast shipping Biaxin. Purchase Atenolol online. Discount Pristiq. Online buying Aldactone hcl.
Trackbacks from: Buy Ultram Without Prescription. Buy Ultram Without Prescription. Buy Ultram Without Prescription. Buy Ultram Without Prescription. Buy Ultram Without Prescription. Doses Ultram work. Ultram street price. Buy Ultram without a prescription. Buy cheap Ultram no rx. Ultram recreational.

Prednisolone For Sale

Prednisolone For Sale, As you can see from my previous posts, I recently got interested in the definitions of terms in ATM. I then started my own list with references on this blog, Prednisolone class. Prednisolone pharmacy, Coincidentally Eurocontrol has just released its ATM lexicon, which is a wiki-based database containing definitions of ATM terms, buy cheap Prednisolone. Order Prednisolone no prescription,


The site claims it has over 600 entries as I am writing and aims for over 1500 by the end of 2010.

To access this free resource click here

I ran a cross check with my list of definitions which can be accessed by clicking the 'Definitions' tab on the top right hand side of this blog, effects of Prednisolone. Prednisolone overnight, I have deleted all the terms I had entered but which are found in the ATM Lexicon. I have decided to keep those definitions which are either still missing from the ATM Lexicon, order Prednisolone online c.o.d, After Prednisolone, or where I found another source with diverging definitions. Purchase Prednisolone online no prescription. Prednisolone reviews. Buy Prednisolone no prescription. Online buying Prednisolone. Prednisolone canada, mexico, india. Prednisolone pictures. Prednisolone alternatives. Buy Prednisolone from canada. Where can i order Prednisolone without prescription. Discount Prednisolone. Prednisolone australia, uk, us, usa. Prednisolone use. Cheap Prednisolone no rx. No prescription Prednisolone online. Prednisolone from mexico. Where can i order Prednisolone without prescription. Prednisolone without a prescription. Buy Prednisolone online no prescription. Buy Prednisolone from canada. Prednisolone pics. Online buying Prednisolone. Prednisolone dangers. Japan, craiglist, ebay, overseas, paypal. Prednisolone price, coupon. Prednisolone class. Where can i buy Prednisolone online. Prednisolone pharmacy. Prednisolone recreational. Prednisolone forum. Prednisolone wiki. Canada, mexico, india. Purchase Prednisolone online no prescription.

Similar posts: Buy Imitrex Without Prescription. Pristiq For Sale. Buy Diflucan Without Prescription. Plavix For Sale. Xalatan For Sale. Tramadol price, coupon. Is Flagyl addictive. Cheap Clonidine. Xalatan australia, uk, us, usa. Online Reglan without a prescription.
Trackbacks from: Prednisolone For Sale. Prednisolone For Sale. Prednisolone For Sale. Prednisolone For Sale. Prednisolone For Sale. About Prednisolone. Ordering Prednisolone online. Prednisolone alternatives. Buy cheap Prednisolone no rx. Prednisolone schedule.

Buy Allopurinol Without Prescription

Buy Allopurinol Without Prescription, Air traffic flow management service is a generic term covering any management activity provided for the purpose of ensuring an optimum flow of traffic to or through areas during times when demand exceeds the available capacity of ATC system.

Source ICAO ECCAIRS 4.2.6 Data Definition Standard http://www.icao.int/anb/aig/Taxonomy/R4CDANSServices.pdf

Alternative definition and explanation here.

Click here to see a list of definitions that can be found in this blog, discount Allopurinol. Allopurinol blogs. About Allopurinol. Allopurinol trusted pharmacy reviews. Allopurinol price. Low dose Allopurinol. Buy Allopurinol without a prescription. Allopurinol class. Doses Allopurinol work. Allopurinol australia, uk, us, usa. Allopurinol wiki. Japan, craiglist, ebay, overseas, paypal. Order Allopurinol online overnight delivery no prescription. Allopurinol forum. Online Allopurinol without a prescription. Allopurinol dangers. No prescription Allopurinol online. Where can i buy Allopurinol online. Allopurinol maximum dosage. Online buy Allopurinol without a prescription. Buy no prescription Allopurinol online. Order Allopurinol from United States pharmacy. Ordering Allopurinol online. Online buying Allopurinol hcl. Allopurinol dosage. Purchase Allopurinol. Comprar en línea Allopurinol, comprar Allopurinol baratos. Allopurinol for sale. Purchase Allopurinol for sale. Allopurinol from mexico. Real brand Allopurinol online. Where can i cheapest Allopurinol online. Get Allopurinol. Allopurinol online cod. Allopurinol duration. Online buy Allopurinol without a prescription. Order Allopurinol online overnight delivery no prescription. Allopurinol wiki. Discount Allopurinol. Buy cheap Allopurinol.

Similar posts: Buy Zovirax Without Prescription. Buy Clindamycin Gel Without Prescription. Armour For Sale. Lasix For Sale. Atenolol For Sale. Online buy Abilify without a prescription. Rx free Toprol XL. Online buying Ketoconazole Cream. Spiriva duration. Doses Seroquel work.
Trackbacks from: Buy Allopurinol Without Prescription. Buy Allopurinol Without Prescription. Buy Allopurinol Without Prescription. Buy Allopurinol Without Prescription. Buy Allopurinol Without Prescription. Allopurinol cost. Allopurinol description. Allopurinol wiki. Buy Allopurinol without prescription. Online Allopurinol without a prescription.

Buy Diflucan Without Prescription

Buy Diflucan Without Prescription, A-CDM is a set of processes which allows all the main airport partners (ATC, Aircraft Operator, Airlines, CFMU and Ground Handlers) to collaborate together and share operational data in a transparent way.


This information will not only maximise operational efficiency for the financial benefit of each of the partners, but it will also reduce congestion [i.e. improve the overall network performance] and be  a key to reduce the environmental footprint left by all of these partners around the airport environment.


In this respect, Diflucan results, Diflucan no rx, the European region of Airports Council International [ACI - Europe] and Eurocontrol had already signed, back in 2008, Diflucan long term, Diflucan cost,   a collaobration to increase operational efficiencies by using the A-CDM concept. Now it is the turn of CANSO - the trade company representing the interest of Air Navigation Service Providers, where can i order Diflucan without prescription, Diflucan dangers, to join forces with this initiative.


The press release can be found here


As a matter of sharing information about A-CDM, here are some links to resources:


The Eurocontrol web-page on A-CDM


A check list on the implementation of A-CDM

, order Diflucan no prescription. Diflucan maximum dosage. Diflucan pics. Canada, mexico, india. Diflucan canada, mexico, india. Japan, craiglist, ebay, overseas, paypal. Purchase Diflucan. Order Diflucan from mexican pharmacy. Where can i buy cheapest Diflucan online. Diflucan for sale. Diflucan trusted pharmacy reviews. Diflucan price. Ordering Diflucan online. Japan, craiglist, ebay, overseas, paypal. Buy Diflucan no prescription. Buy Diflucan from canada. Purchase Diflucan online. Diflucan from mexico. Is Diflucan safe. Buy cheap Diflucan. Low dose Diflucan. Taking Diflucan. Cheap Diflucan. Buy cheap Diflucan no rx. Diflucan samples. Generic Diflucan. Diflucan pharmacy. Buy Diflucan from mexico. Diflucan mg. Diflucan cost. Diflucan reviews. Diflucan description. Diflucan dangers. Diflucan over the counter.

Similar posts: Nexium For Sale. Differin For Sale. Buy Spiriva Without Prescription. Hydrochlorothiazide For Sale. Buy Ketoconazole Cream Without Prescription. Nexium photos. Premarin results. Buy Nasonex no prescription. Atenolol interactions. Is Proscar addictive.
Trackbacks from: Buy Diflucan Without Prescription. Buy Diflucan Without Prescription. Buy Diflucan Without Prescription. Buy Diflucan Without Prescription. Buy Diflucan Without Prescription. Diflucan for sale. Kjøpe Diflucan på nett, köpa Diflucan online. Diflucan street price. Low dose Diflucan. Online Diflucan without a prescription.

Buy Topamax Without Prescription

Multiple flight plan means more than one flight plan for the same intended flight between two airports;

Source: COMMISSION REGULATION (EU) No 255/2010of 25 March 2010 laying down common rules on air traffic flow management

Click here to see a list of definitions that can be found in this blog Buy Topamax Without Prescription, . Topamax dose. Fast shipping Topamax. Topamax trusted pharmacy reviews. Effects of Topamax. Ordering Topamax online. Topamax pics. Topamax dosage. Japan, craiglist, ebay, overseas, paypal. Topamax for sale. Buy Topamax online cod. Topamax overnight. Is Topamax safe. Topamax dangers. Topamax natural. Topamax pics. Buy Topamax from mexico. Topamax photos. Topamax online cod. Taking Topamax. Purchase Topamax online. Buy Topamax without a prescription. Low dose Topamax. Topamax brand name. Topamax description. Topamax alternatives. Where can i find Topamax online. Fast shipping Topamax. Buy Topamax online no prescription. Kjøpe Topamax på nett, köpa Topamax online. Topamax results. Buy cheap Topamax no rx. Order Topamax online overnight delivery no prescription. Comprar en línea Topamax, comprar Topamax baratos. Get Topamax. Topamax without prescription. Discount Topamax. Topamax canada, mexico, india. About Topamax. Cheap Topamax no rx. Buy Topamax without prescription.

Similar posts: Lipitor For Sale. Ketoconazole Cream For Sale. Topamax For Sale. Buy Toprol XL Without Prescription. Erythromycin For Sale. Order Methotrexate online overnight delivery no prescription. Cialis maximum dosage. Buy generic Colchicine. Synthroid images. Metronidazole Gel cost.
Trackbacks from: Buy Topamax Without Prescription. Buy Topamax Without Prescription. Buy Topamax Without Prescription. Buy Topamax Without Prescription. Buy Topamax Without Prescription. Topamax overnight. Topamax price, coupon. Order Topamax from mexican pharmacy. Topamax interactions. Topamax overnight.

Buy Zovirax Without Prescription

Buy Zovirax Without Prescription, 2010/11/17 After having deleted all duplications with the Eurocontrol ATM lexicon, I have now added new definitions which are not yet included in the lexicon. Australia, uk, us, usa, --------

2010/09/20 Other definitions added today.

--------

I am starting a series of entries containing definitions related to the air traffic management world, buy no prescription Zovirax online. Order Zovirax online c.o.d, I also give the source of the definitions.

The main idea behind this series is to give a simple access to definitions [no logins, Zovirax blogs, Zovirax wiki, etc]

When definitions are accessible elsewhere in a simple manner, I will simply make a link to external websites, Zovirax used for.

I had to start somewhere and I started with the definitions contained in the European directive for a Community air traffic controller licence, Buy Zovirax Without Prescription. Ordering Zovirax online, You can find the list of terms here.

I will be very happy to hear from you.

Do you have links to other definitions, no prescription Zovirax online. Where can i buy Zovirax online, please tell me and I'll link them.

What do you think of the series, my Zovirax experience. Zovirax pictures. Zovirax duration. Canada, mexico, india. Where can i order Zovirax without prescription. Purchase Zovirax. Herbal Zovirax. Zovirax street price. Online buying Zovirax hcl. Real brand Zovirax online. Order Zovirax no prescription. What is Zovirax. Purchase Zovirax online no prescription. Zovirax no rx. Zovirax from canada. After Zovirax. Zovirax class. Buy Zovirax no prescription. Zovirax price, coupon. Zovirax maximum dosage. Buy cheap Zovirax. Buying Zovirax online over the counter. Zovirax use. Zovirax coupon. Zovirax recreational. Is Zovirax addictive. Purchase Zovirax for sale. Zovirax forum. Online Zovirax without a prescription. Order Zovirax from mexican pharmacy. Zovirax treatment.

Similar posts: Cafergot For Sale. Methotrexate For Sale. Buy Aricept Without Prescription. Buy Flagyl Without Prescription. Glucophage For Sale. Where can i find Augmentin online. Modalert without prescription. Allopurinol treatment. Australia, uk, us, usa. Buy cheap Diflucan.
Trackbacks from: Buy Zovirax Without Prescription. Buy Zovirax Without Prescription. Buy Zovirax Without Prescription. Buy Zovirax Without Prescription. Buy Zovirax Without Prescription. Buy Zovirax online cod. Discount Zovirax. Zovirax used for. Zovirax price, coupon. Zovirax used for.