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My Math Project  
User currently offlineBacardi182 From United States of America, joined Jan 2000, 1091 posts, RR: 1
Posted (15 years 12 months 3 days 1 hour ago) and read 1977 times:

for my IB math project i was going to compare 4 engine aircraft(A340 and 747-400). but my teacher said that the topic was too broad and not specific enough. does anybody have any ideas on how to narrow down the specifics on my project or have any better ideas that i can use that involves aviation?

5 replies: All unread, jump to last
User currently offlineJAT From Canada, joined Feb 2000, 1101 posts, RR: 9
Reply 1, posted (15 years 12 months 3 days 1 hour ago) and read 1876 times:

Maybe you should just compare two engines. Will she accept that?

User currently offlineSlawko From Canada, joined May 1999, 3804 posts, RR: 8
Reply 2, posted (15 years 12 months 3 days ago) and read 1860 times:

What about comparing the efficientcy and the power/speed, and how that relates to the operating costs of both planes for verious operators

"Clive Beddoe says he favours competition, but his actions do not support that idea." Robert Milton - CEO Air Canada
User currently offlineBlink182 From United States of America, joined Oct 1999, 5499 posts, RR: 14
Reply 3, posted (15 years 12 months 3 days ago) and read 1854 times:

just do it anyway! but spend all your time on it! will she accept that?
sorry the whole graphic didnt go on
many thanx to teahan for emailing me how

Give me a break, I created this username when I was a kid...
User currently offlineBacardi182 From United States of America, joined Jan 2000, 1091 posts, RR: 1
Reply 4, posted (15 years 12 months 2 days 23 hours ago) and read 1840 times:

i think i am going to use- does boeing or airbus make the most efficient 4 engined, long distance, wide body aircraft. im find this out by comparing the A340-300 with the 747-400 with 3 airlines. Cathay pacific, singapor, and candian/aircanada. does this project sound good to you guys?

PS- how do i find the seat cost per mile, or whatever that is?

User currently offlineB727-200 From Australia, joined Nov 1999, 1051 posts, RR: 2
Reply 5, posted (15 years 12 months 2 days 17 hours ago) and read 1817 times:

Don't mean to crap on - just brainstorming a little on the topic.

The reason they are different may be, firstly, physical factors such as weight, fuselage dimensions, drag coefficient, engine type and thrust, sweep angle of the wings (you will notice the B747 has a much sharper sweep than the A340 for instance), etc...

Then there are the financial connotations. Calculating cost per seat/mile is reliant on the configuration of the aircraft (how many seats in each class / how many seats in total). Then there is the optimum distance that these aircraft have to operate before efficiencies are gained. Oh, and don't forget cargo capacity as well, as this contributes a lot of revenue, particularly on long-haul international service.

I don't by any means want to discourage you, more encourage you to narrow your focus on what it is you want to achieve. It may be a straight-out comparison of operating costs at fixed configurations for each aircraft. If this is the case, you may want to create a sensitivity analysis, which looks at both aircraft types over a series of distances to work out which one is the best for certain markets (eg. over 1000nm, 2000nm, etc...).

If you can figure the lot out, maybe you should look at a career in Fleet Planning?


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