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Four million parts, 30 countries: How an Airbus A380 comes together (2018)

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Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#21
post #4

This reminds me of the f-35. I find it absolutely insane that a mix of tax incentives can lead to this inefficient mess involving custom built ships and airplanes. Wonder how much this supply chain dynamic ends up adding to the cost of the a380 in aggregate

Maybe when it comes to flying you wouldn't want too much corner-cutting in pursuit of the max profit. Max.. why does that sound familiar?

Corner cutting on safety is quite different from supply chain optimizations.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#22

I met an Airbus test pilot once. Among other stories he told me that the A380 is one of best balanced planes out there, and apparently a joy to fly. He said even without engines he could easily land it like a glider. Now, I can't really verify what he said, but he seemed sincere. Having travelled in the A380 as passenger, I will sure miss it.

Flown many times in the front of an A380. I usually put headphones on for landing. First ever flight on one I only noticed we had wheels down after the fact, so flawless was the landing.

Also the quietest plane I've ever been on.

Sad place for civilisation to lose this machine.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#23

I met an Airbus test pilot once. Among other stories he told me that the A380 is one of best balanced planes out there, and apparently a joy to fly. He said even without engines he could easily land it like a glider. Now, I can't really verify what he said, but he seemed sincere. Having travelled in the A380 as passenger, I will sure miss it.

> one of best balanced planes out there Airliner design is regulated for stability for passenger flight on IFR approaches. So they're all pretty smooth. (The reason for the 737 MAX MCAS system was to meet those requirements, although they failed in that case.) All planes can glide if the wings are attached, and any essential electricity is available for control (if necessary.) A corollary of "all planes glide" is tha…

All planes can glide, but not to the same degree. The glide ratio, or the ratio between distance travelled per distance dropped, varies wildly between planes.

A purpose built glider has a glide ratio of about 60:1, so it could travel 60mi while only losing 1mi of altitude, while a Cessna 172 has a glide ratio of 9. Large passenger aircraft have glide ratios inbetween, with a 737 having a ratio of 17.

On the other extreme end you have military fighter planes, which tend to more closely resemble well propelled un-aerodynamic objects once their engines give out. The worst I could find was the F104 Starfighter, which has a glide ratio of 3-5 depending on its exact configuration. Dead stick landings of these aircraft tend to be rare, as the availability of ejection seats (especially before zero-zero seats became a thing) encourages a not-my-problem-any-more attitude among pilots who discover themselves absent a working engine.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#24

I met an Airbus test pilot once. Among other stories he told me that the A380 is one of best balanced planes out there, and apparently a joy to fly. He said even without engines he could easily land it like a glider. Now, I can't really verify what he said, but he seemed sincere. Having travelled in the A380 as passenger, I will sure miss it.

The captain of Qantas Flight 32, Richard de Crespigny, credits his first flying instructor with schooling him in "not panicking when engines are lost and you have to glide your plane". He writes about it in his account of the explosion of QF32's Rolls Royce engine which degraded 21 of the Airbus’s 22 flight systems. With the aircraft in glide-mode he built up enough functions to be able to land the aircraft. With no reverse thrusters, no wing slats and badly degraded brakes, four tyres blew out when they landed. https://www.amazon.com/QF32-Richard-Crespigny-2012-05-04/dp/...

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#25

*came together. The A380 program is nearly over. The most incredible passenger plane in the sky. Comfortable for 16+ hours. I hope they can archive the blueprints for it well enough to consider building it again in the future.

Is the comfort really any difference in an A380 vs a 777 vs an A350? Cabin configuration is really the only differentiation between modern wide bodies and that’s mostly on the airline.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#26
post #4

This reminds me of the f-35. I find it absolutely insane that a mix of tax incentives can lead to this inefficient mess involving custom built ships and airplanes. Wonder how much this supply chain dynamic ends up adding to the cost of the a380 in aggregate

Maybe when it comes to flying you wouldn't want too much corner-cutting in pursuit of the max profit. Max.. why does that sound familiar?

Bespoke parts often leads to worse quality for the same price.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#27
post #16

Earlier quoted context omitted.

5) If there was really a big market for the A380 why wasn't Boeing selling more 747's.

It's a good point. I suspect there's an argument that a newer design could be more fuel-efficient, but I haven't read anything on that. (The only things that operators care about are fuel efficiency and operating cost/commonality, and will the lenders finance it. Passenger comfort has no bearing.)

No, the killer was the move away from hub and spoke model to directs between secondary cities. This was exacerbated more by ETOPS allowing narrow body jets to cover ocean flights.

No point in Southwest funneling all passengers to LAX to board an A380 to HNL when they can just have directs on 737s from every west coast city.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#28

*came together. The A380 program is nearly over. The most incredible passenger plane in the sky. Comfortable for 16+ hours. I hope they can archive the blueprints for it well enough to consider building it again in the future.

Is the comfort really any difference in an A380 vs a 777 vs an A350? Cabin configuration is really the only differentiation between modern wide bodies and that’s mostly on the airline.

In terms of seats, it’s roughly the same (and some airlines have awful A380 configurations), but amenities like showers and bars are much easier on the A380 given the space constraints of other widebodies.

Also IME engine noise is reduced given how far you can be from them versus a normal widebody.

Re: Four million parts, 30 countries: How an Airbus A380 comes together (2018)

#30

*came together. The A380 program is nearly over. The most incredible passenger plane in the sky. Comfortable for 16+ hours. I hope they can archive the blueprints for it well enough to consider building it again in the future.

Do airplane designers really go back to older designs to make next generation planes? I guess the documentation of design decisions could be useful but the design files by themselves seem pretty difficult to re-use.
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