Scorpio From Belgium, joined Oct 2001, 5032 posts, RR: 43
Reply 1, posted (10 years 5 months 1 day 17 hours ago) and read 2129 times:
I'm pretty sure it's going to need a long runway that can sustain the kind of weight that aircraft is going to need.
Actually, the A380 will not need a longer runway than the 747. Also note that the weight of the plane will be distributed among more tires than on the 747, meaning the plane will not need 'stronger' runways. The taxiways will need to be widened in a number of airports though.
SU184 From Egypt, joined Feb 2004, 236 posts, RR: 10
Reply 5, posted (10 years 5 months 1 day 17 hours ago) and read 1952 times:
Just read in Flight International that the pavement loading for the A380 will be a little bit higher than the B744 ( 26,500 A380 against 23,300 B744 ), but lower than the B773 ( 26,600 ) the figure is weight per wheel. This is the main gear wheels only as they carry 95% of the weight.
It was earlier mentioned that LAX is lagging behind the other mainland US airports getting ready to receive the A380, mainly JFK and soon Memphis for FEDEX
PW100 From Netherlands, joined Jan 2002, 2485 posts, RR: 11
Reply 8, posted (10 years 5 months 1 day 12 hours ago) and read 1761 times:
Runways will not be a problem for A380, at least not compared to B777-300ER/B747-400.
Weight per wheel comparison:
A380-800: 26,500 kg per wheel [20 wheels]
A380-800F: 28,100 kg per wheel [20 wheels]
B747-400: 23,300 kg per wheel [16 wheels]
B777-300ER: 26,600 kg per wheel [12 wheels]
Note: number of wheels is main gear only. Assuming nose gear supports less than 5% of total weight.
Runway performance of the A380 is at least equal or better than 747.
Airbus has published the following data on the A380 take-off performance.
Mind you, take-off performance is highly dependent on pressure altitude:
A380-843F MTOW limitation for RR Trent 977 powered models, ISA conditions
9500 ft runway, MTOW:
0 ft press alt: 593 ton
2000 ft: 562 ton
4000 ft: 536 ton
6000 ft: 505 ton
10000 ft runway, MTOW:
0 ft press alt: 604 ton
2000 ft: 576 ton
4000 ft: 546 ton
6000 ft: 519 ton
11000 ft runway, MTOW:
0 ft press alt: 626 ton
2000 ft: 596 ton
4000 ft: 567 ton
6000 ft: 537 ton
12000 ft runway, MTOW:
0 ft press alt: 636 ton
2000 ft: 607 ton
4000 ft: 579 ton
6000 ft: 548 ton
1 ton = 1,000 kg = 2,200 lb
Note that above figures are aerodynamic/thrust margins, not actual/structural limits. The A380F is currently structurally limited to 590 ton MTOW. This would mean that the A380F would be able to take off WITHOUT payload/fuel penalty at MTOW from a 9500 ft runway at ISA sea level conditions [sea level, 15 degrees C, 59 F]. The A380F looks to be a very good airplane in terms of take-off performance. If a 747 can do the job at MTOW, the A380 will also be able to do the job at MTOW from the same runway.
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