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25 Nov
2019

Schedule Generation and FAM | Good Grade Guarantee!

AVIA26011Group Project (GP) for AVIA2601Given Fleets: You have 6 B737 (capacity 170 seats) and 6 B787 (capacity 250 seats) to basein the following cities (see Table 1). You have four tasks in this project.Table 1: Base citiesTask 1: Schedule Generation and FAM (Assignment Two)Your task is to create a timetable based on your base city and fleets. Your maintenance baseis located at your base airport. To simplify your task, you are asked to design a timetable thatrepeats on a daily basis and no date-line crossing allowed (e.g. SYD-LAX or LHR-JFK).To further simplify your task, you can do only point-to-point operations in your network withgiven aircraft and resources. Hence, don’t pay too much attention on competition but focuson choosing longer sectors to form your networks. To increase aircraft utilisation, you shouldaim for longer sectors (longer than 3 hrs) instead of high frequency short-haul operations,depending on aircraft range.
Team
Base City
1
Manchester (UK)
2
Amsterdam (Netherlands)
3
Lyon (France)
4
Warsaw (Poland)
5
Barcelona (Spain)
6
Porto (Portugal)
7
New Delhi (India)
8
Xian (China)
9
Cebu (Philipines)
10
Gimpo (Seoul, S. Korea)
11
Osaka (Japan)
12
Sapporo (Hokaido, Japan)
13
Karachi (Pakistan)
14
Muscat (Oman)
15
Colombo (Sri Lanka)
16
Oslo (Norway)
17
Gatwick (London)
18
Zurich (Switzerland)
19
Ankara (Turkey)
20
Taipei (Taiwan)
21
Guangzhou (China)
22
Ho Chi Minh City (Vietnam)
AVIA26012After creating your timetable, you will need to do Fleet Assignment by using the FAM youjust learned. Demand figures are provided on Moodle. Your fleet assignment results mustmeet the three sets of constraints in FAM.Task 2: Aircraft Routing (Assignment Two)Your task is to ‘route’ your aircraft (6 in each fleet) in a network based on results of fleetassignments. Also, A/C need to be maintained at the maintenance base (i.e. 12-hr overnightfor A Checks) for every three days. This means that you need to ‘bring’ your aircraft backto base once every three days. We don’t do aircraft cycles. (note: this is a very simplified Mrouting requirement. Modern A/C have a longer gap than three days in between A Checks;this topic will be covered with more details in AVIA3201.) You need to run aircraft routingmodels for those two fleets and generate separate routing patterns (i.e. A/C diagrams) foreach fleet.At this stage, you may find that your six aircraft are not adequate to cover all flights you haveplanned (i.e. too many flights). If so, you need to revise your timetable, re-do fleetassignments, and then do FAM optimisation again. This process is iterative, time-consuming,and may take a few rounds before your reach a satisfactory solution. So, make sure you startyour work as early as possible!In the final report, I will expect you to discuss the processes that you do FAM and AR (not torepeat what’s available from tutorials), including how you revise timetables and fleetassignments and what you have learned from the process. Thorough discussions arenecessary to gain a higher mark than PS. For example, what’s your aircraft/fleet utilisationon average per day; can you improve utilisation by changing your timetable or routingoptions? Mind that long-range aircraft (and long sector lengths) tend to have high dailyutilisations, so focus on the ‘gaps’ in your aircraft diagrams; can you ‘squeeze’ in anotherreturn flights? Failure to obtain an optimised solution in aircraft routing will yield a FL mark.Failure or inadequate discussions on results and implications will yield a maximum of PSmark. This marking standard is consistent throughout your group project of AVIA2601.AVIA26013{Note: OPL codes and other materials can be put in appendices of your report. Equations in reports MUST betyped in a word processing software, e.g. MS Word, and NOT to be copied and pasted from class materials.Copy-and-past will cause penalties in marking.}Task Two: Crew Pairing (Assignment Three)Based on results of Assignment Two, your job in this task is to solve the cabin crew pairingproblem of your airline. The following crewing constraints set by CASA and union-airlineEBAs must be respected in your solution:• Maximum 8 hrs block time for pilots and 11 hrs duty time for cabin crew for anygiven 24-hr duty period.• Maximum daily hrs (within any 24-hr duty period) can be extended by 2 hrs, only if aminimum rest time (sit time) of 3 hrs is provided within a duty.• Minimum rest time is 12 hrs if the previous duty finishes by midnight the day before.If the duty finishes after midnight, then the minimum rest time is 18 hrs.• The crew base is located at your home base.• The minimum and maximum sit times are 30 minutes and 3 hours respectively.• The maximum length of duty is 3 days.• Sign-on time is 40 mins before the first flight of the duty day and sign-off time is 20mins after the last flight of the duty day.• Assume group transport time to/from airport from hotel (while away from base) isboth 60 mins.• Crewing cost items are given as follows:1. Non-flying duty times: $1 per minute for sign-on/off and sit-times (for bothpilots and crew).2. Flying duty times: $5 per min for pilots and $2 per min for cabin crew.3. Transport times to/from airport from hotel (while away from base): $20c permin (for pilots and crew).4. Hotel cost is $500 for each pilot set (duo) overnight, and $2,500 for the wholecrew set overnight away from base.AVIA26014The objective of your optimisation is crew pairing cost minimisation. This is not entirelythe same as the textbook example, so be prepared to spend time exploring your journeyleading to problem solving and eventually, reaching the final solution. Would be fun. ^_<The marking standard applies for Assignment Three as well. I would expect that you discussthe processes of solving your crew pairing problem and discuss the difficulties and solutionsteps you adopt in your project. I would also expect you to explain how good your pairingsolutions are by performance measurements such as total crewing costs (minimisation) and/orutilisation hours (block times) … etc. Typically, airlines look for minimum cost pairingsolutions with high utilisation hrs. So, convince me that your solution is good. If you candemonstrate in the processes of problem solving how you have changed the timetable andpairings (and corresponding costs) that lead to better solutions with good discussions, thenthis would get you a higher mark in return. Hence, the secret to good marks is on your hardwork, creativity and exploration efforts in the project. No pain, no gain!Task Three: Crew Rostering (Assignment Three)Based on the results of Crew Pairing, you are asked to do cabin crew rostering. To reducethe scale of your rostering problem, roster generation is done by the following rules:• Only a 7-day roster is required in your optimisation exercise,• At least one day off between any two pairings,• At most two pairings per 7 days for any roster line.The objective of roster optimisation is working hour balance for each crew. After a 7-dayroster plan is produced after optimisation, then repeat or rotate to form a 28-day full roster foreach roster line. In other words, you only need to create a 7-day roster (so a smaller problemscale) in your optimisation model. When constructing the final 28-day roster, you then rotateamong the 7-day rosters to create a ‘balanced’ roster plan for 28 days. However, you mayhave ‘continuing pairings’ spanning across two 7-day roster periods. If this is the case, youneed to pay attention to how rosters can be rotated to form 28-day roster. Refer to our tutorialand the textbook for more examples.AVIA26015Reporting is the same as other tasks, so focus on performance indicators such as hours andhow rostering can be improved to boost performance. The report of Assignment Three shallcontain all previous tasks (i.e. Assignment Two), so this report will be the full report that yousubmit for markingAVIA26016Group Project Consultation Rules:In the teaching schedule, there are tutorials and consultation slots (check the teachingschedule for details). Please prepare yourself and the team for group project works and haveplenty of planning before embarking on the project. This project is going to be timeconsuming, so share the load with your partner. Project tutorials and consultations areprovided and aimed for assisting your project, so help yourself before asking for help. It’salso a good idea to ask your classmates on Moodle or in class.Beyond those consultation Wednesdays, you can also ask questions to the class on Moodle’sdiscussion forum; this is a lot more efficient, because your question can also solve otherteams’ issues. Questions will NOT be answered by your tutor or lecturer through emailsor outside planned consultation time on Wednesdays, so come to the lab, do your projectsand ask your questions; or, do it on Moodle. No further consultation time will be providedother than those planned in the teaching schedule, so don’t be a last-minute-dot-com-er!AVIA26017Assignment Submission Guidelines:All submissions must be done on Moodle and the following items must be submitted bydeadline (check Moodle for exact deadlines):1. You are required to submit an interim report (FAM & AR; only soft copies onMoodle) and a final report that includes all four tasks (FAM, AR, CP, & CR).2. The interim/final report file preparation: The soft copy of your report MUST be inPDF format and contained in ONE single PDF file only for submission (20%penalty, if you don’t follow this rule).a. Name your report file in the following format: groupX_finalReport.pdf. Alsonote your group number on your title page of your report.b. Mind the file size limit of your submission on Moodle!3. The final report (hard copy): a hard copy must be submitted to Dr. Wu’s office bythe same deadline (check Moodle for instructions).4. OPL codes: Three sets of model files (routing, pairing and rostering) that you used inthe project must also be submitted on Moodle in native forms in a single zipped ball(soft copies should include both model files and data files) together with interim andthe final report. Follow the following instructions for code submission:a. Name your model file in the following format: groupX_FAM.mod,groupX_routing.mod, groupX_crewPairing.mod, andgroupX_crewRoster.mod;b. Similar naming style for OPL data files.c. Zip all codes in a single zipped ball (you can do this in the lab or download ziptools freely from internet) and name it by groupX_OPL.zip.Penalties to late submissions are heavy; 10% reduction per day, so be on time! As usual, noexcuses are accepted for late submissions, unless it’s the problem with the Moodle system.Have fun. ^_^Dr. C. Richard Wu

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