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Revision of cabin configurations in AE

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#1
dzsoki

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Currently in AE we have a Max Seats parameter to describe the seating capacity of an aircraft.

This Max Seats parameter equals the maximum certified evacuation seat number of an aircraft. (FAA exit limit)

This FAA exit limit not suitable to describe the cabin size and the possible cabin configurations of an aircraft, becuse this FAA exit limit does not always match the cabin capacity of an aircraft.

Max seats = cabin capacity = exit limits

 

Please check the following example for the Airbus A340 series aircrafts:

Airbus factory datas: http://www.airbus.co...aft/a340family/

 

A340-200

Max seats in AE: 420

Cabin lenght: 46,06 m

Cabin width: 5,28 m

 

A340-300

Max seats in AE: 440

Cabin lenght: 50,35 m

Cabin width: 5,28 m

 

A340-500 (this aircraft intended for ultra long range flights)

Max seats in AE: 375

Cabin lenght: 53,56 m

Cabin width: 5,28 m

 

A340-600

Max seats in AE: 475

Cabin lenght: 60,98 m

Cabin width: 5,28 m

 

An Airbus A340-500 cabin is bigger than a A340-200 by more than 6 meters, in the reality if I configure

- 20F 60C 274Y (354) for both aircraft I will have more space in the A340-500.

Currently in AE I can configure only the following cabin config for A340-500, which has larger cabin than the A340-200:

- 20F 60C 229Y (309)

 

Using FAA exit limits to determine the actual seating capacity of an aircraft can be misleading in some cases. For bigger planes the max passengers certification process depends on the manufacturers strategy, let's see a simple example. We have two planes Airbus_1, and Boeing_1ER, both plane have the same cabin size, both designed for ultra long range flights.

 

Strategy of Airbus_1: This aircraft intended for long range usage so I certify it with 400 pieces of 32" pitch seat, nobody will use it with configurations above this.
Strategy of Boeing_1ER: I certify this aircraft with more 440 pieces of 30" seats, because I will have other aircrafts with comparable cabin size, and I will use this certification to take out this process for other shorter range aircrafts as well, with similar cabin size (we save money, if we go for the maximum amount of seats and test just once).
 
In AE this would mean that we can configure the following cabin layouts for two aircrafts, with exactly the same cabin size:
Airbus_1: 30F 60C 229Y (319)
Boeing_1ER: 30F 60C 269Y (359)
 
In the reality we can configure Airbus_1 to 30F 60C 269Y (359) the same capacity, exactly the same seat pitch, like the Boeing without any problem, but we took the FAA exit limit, as if it would describe the actual cabin size, which is not right and this caused errors in our calculations.
 
For bigger planes the manufacturers own seat map drawing, comparing cabin sizes, comparing actual seat plans with seat pitch data, will give you much more punctuality than FAA exit limits alone.
 
For the above mentioned example, I think two parameters should be used to describe the seating capacity of an aircraft in AE:
1, maximum allowed passengers (FAA exit limit)
2, cabin size (actual cabin size in seats)
 
Airbus_1:
maximum allowed passengers: 400
cabin size: 440
 
Boeing_1ER:
maximum allowed passengers: 440
cabin size: 440
 
-first parameter determines the maximum allowed seats for the aircraft.
-second parameter determines the maximum cabin size which can be used for seating
-at default the two parameters should be equal for all aircrafts, so it won't cause any problems in AE, only aircrafts where differences exist between the cabin size and max. allowed passengers could be fine tuned easily
 
To summarize, FAA exit limits have much better punctuality for smaller aircrafts, as most of the time they really reflects the maximum capacity and the actual cabin size of the aircraft.
At bigger planes the max. seating capacity depends on the actual cabin size, and the certification strategy of the manufacturer, which sometimes can be really misleading.
 
Possible cabin configurations accordingly for this example:
 
Airbus_1:
- 30F 60C 269Y (359)
- 400Y (400)
- 440Y (440)
 
Boeing_1ER:
-30F 60C 269Y (359)
-440Y (440)
 
Example cabin configuration solutions for the A340 series:
 
-Airbus A340-200:
maximum allowed passengers: 420
cabin size: 420
 
-Airbus A340-300:
maximum allowed passengers: 440
cabin size: 440
 
-Airbus A340-500:
maximum allowed passengers: 375 (ultra long range aircraft, this is why it certified so low)
cabin size: 468 (from the cabin width & lenght compared to A340-300)
 
-Airbus A340-600:
maximum allowed passengers: 475
cabin size: 520
 
-Boeing 777-300ER:
maximum allowed passengers: 550
cabin size: 550
I quoted 777-300ER here because it's a good example for the max seats certification strategy. If we take the FAA exit limits data, as cabin size this will tell us that the 777-300ER has a 46,6% bigger cabin than a A340-500. But that's not real. We get realistic cabin size ratios if we use the cabin size parameters.
 
Some Boeing aircraft examples, where these new parameters can be also used:
 
-Boeing 737-600:
maximum allowed passengers: 149
cabin size: 140
(this 149 seat number phisically won't fit into the aircraft, exit limit is higher than the actual capacity, because the exit limit is determined by the emergency exit door configuration, which matches 737-700)
 
Boeing 737-900 and 737-900ER: two aircraft with exactly the same cabin size.
 
"Boeing later introduced the 737-900, the longest and most powerful variant to date. Alaska Airlines launched the 737-900 in 1997 and accepted delivery on May 15, 2001. Because the -900 retained the same number of exits as the -800, seating capacity was limited to 189 in a single-class layout."
 
Boeing 737-900
maximum allowed passengers: 189
cabin size: 220
 
Boeing 737-900ER
maximum allowed passengers: 220
cabin size: 220
 
the maximum allowed configuration currently in AE:
16F 0C 149Y 
because the FAA exit limits not matches with the cabin size for this aircraft, we have calculation errors and cannot even configure a real world cabin configuration here.
The same applies for the Airbus A340 500/600 series. 
 

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#2
n.x.w.m

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You are saying that the FAA exit limit is not suitable to describe the cabin size and the possible cabin configurations of an aircraft, because this FAA exit limit does not always match the cabin capacity of an aircraft. But, AE is trying to be semi-realistic here, and therefore uses the FAA exit limit capacities.

 

This brings up an interesting point, and I think Northern and BritAboard may be able to clear this up a bit.

 

Can you please clarify your request?


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#3
dzsoki

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You are saying that the FAA exit limit is not suitable to describe the cabin size and the possible cabin configurations of an aircraft, because this FAA exit limit does not always match the cabin capacity of an aircraft. But, AE is trying to be semi-realistic here, and therefore uses the FAA exit limit capacities.

 

This brings up an interesting point, and I think Northern and BritAboard may be able to clear this up a bit.

 

Can you please clarify your request?

 

Yes, this FAA exit limit cause some irrealistic cabin configurations in AE. I think the above recommended method can be easily implemented, and adds more reality to the game.

 

My request is to use one additional parameter for all aircraft:

1, maximum allowed passengers (FAA exit limit)
2, cabin size (actual cabin size in seats)
 
-first parameter determines the maximum allowed seats for the aircraft, you cannot configure more seats than this value
-second parameter determines the maximum cabin size which can be used for seating - for seating this value applies, but you cannot configure more seats than the first parameter //AND connection with the first parameter//
-at default the two parameters should be equal for all aircrafts, so it won't cause any problems in AE, only aircrafts where differences exist between the cabin size and max. allowed passengers could be fine tuned easily
 
This parameters could be used for A340 series B737-600/B737-900 as a trial to allow more realistic cabin configs for these aircrafts if you are using First class and Business seats.
 
But in the future this additional parameter will be also useful to tweak the actual capacity of other aifcrafts as well, especially as Airbus tends to not always certify it's long range aircrafts for the maximum seats.
 
To describe it as simply as I can, we can config with this parameter a 737-900 plane like this:
Boeing 737-900
maximum allowed passengers: 189
cabin size: 220
We have bigger cabin than the max allowed passengers, so you cannot seat 220 passengers, but if you want you can still configure a 16F 0C 156Y cabin layout, because you have enough legroom for this, and your max. passenger should be below 189.
 
With the current system you are not able to do this, if an aircraft has lower max. evacuation seat limits, it will be smaller from every point of view. Even if you are using first class and business seats and the aircraft has a huge cabin size, planned for long range it will be a small aircraft in the game. Like the A340-500 currently.

 

Also if you will have further developments in the game separation of the FAA exit limit and the actual cabin size will be inevitable. The best practise would be to use the actual cabin area as cabin size parameter, and you could build your cabin layout substracted from this value as every object would have it's given area/size value:

-lavatory (passenger will revolt if the ratio will be under 100:1 :) )

-galley

-28-30-32...40" seats


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#4
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Perhaps being able to choose "Seat Pitch" as opposed to number seats when configuring would help (obviously with something telling you how many seats a certain pitch would give)



#5
dzsoki

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Some additional examples, where using the FAA exit limit falsify the actual cabin space of an aircraft.

 

1, B747 classics vs. 747-400:

In AE Boeing 747-100, 747-200 series has "550 seats capacity" vs.

Boeing 747-400 series has "660 seats capacity".

In the reality: passenger capacity increased by only 10 percent by extending the upper deck and relocating the new straight stairway to the rear of the upper deck. There is no 20 percent cabin space difference between these aircrafts.

 

2, B747-400 vs. 747-8I:

In AE Boeing 747-400 series has "660 seats capacity" vs.

747-8I has "605 seats capacity".

In the reality: The 747-8 Intercontinental is the only jetliner in the 400- to 500-seat market, stretched 5.6 m (18.3 ft) from the 747-400 to provide 467 seats in a three-class configuration and a 14,815-km (8,000-nmi) range.

So the 747-8I actually has bigger cabin space just the company not certified it for bigger passenger number.

 

747-400 typical 3 class configuration 416 seats

747-8I typical 3 class configuration 467 seats

With 51 additional seats and 26% more revenue cargo volume than the 747-400, the Intercontinental was designed for the heart of the premium market offering more range, more payload and more fuel efficiency than any previous 747. 

While in AE a 747-8I is 10% smaller than the 747-400, just because the FAA exit limits....

 

 

3, Narrowbody Boeing 737-800 vs. A319-100:

Boeing 737-800 has a 189 seat FAA exit limit, but this is not limited by the actual cabin space, the exit door capability limits this value.

If you check the following seatmap from Ryanair, you can see that they have 30" seat pitch and still have one galley in the passenger area. So this plane has bigger cabin space than the FAA exit limit.

http://www.seatguru....ing_737-800.php

 

A319-100's 160 seat exit limit matches the possible max. seats (at just 28-29" pitch) and the actual cabin space:

http://www.seatguru....Airbus_A319.php

 

Because of this, if you are using two or three class configurations the relative productivity will be much better for an A319 vs. B738, or 747-400 vs. 747-8I / 747 classics.

 

4, The whole A350 series is affected too

This series intended for long range use, so the FAA certificate is declared for fewer passengers, and does not match with the actual cabin size and the Airbus recommended two class seat capacity.

 

A330-300 as reference:

cabin width: 5,28 meters

cabin lenght: 50,35 meters

Airbus recommended seat capacity (two class): 300

FAA exit limit: 440

 

A350-800 with approx. 5% smaller cabin space than the A330-300

cabin width: 5,61 meters

cabin lenght: 45,5 meters

Airbus recommended seat capacity (two class): 276

FAA exit limit: 360

 

A350-900 with approx. 10% larger cabin space than the A330-300

cabin width: 5,61 meters

cabin lenght: 51,8 meters

Airbus recommended seat capacity (two class): 315

FAA exit limit: 420

 

A350-1000 with approx. 20% bigger cabin space than the A330-300

cabin width: 5,61 meters

cabin lenght: 58,8 meters

Airbus recommended seat capacity (two class): 369

FAA exit limit: 450

 

An example how the quoted additional cabin space parameter would handle these aircrafts:

 

-Boeing 747-100/200 series:
maximum allowed passengers: 550
cabin size: 605
 
-Boeing 747-300 and 747-400 series:
maximum allowed passengers: 660
cabin size: 660
 
-Boeing 747-8I:
maximum allowed passengers: 605
cabin size: 726 (from the cabin size improvement compared to 747-400)
 
-Boeing 737-800:
maximum allowed passengers: 189
cabin size: 200
 
-Airbus A319:
maximum allowed passengers: 160
cabin size: 160

 

-Airbus A330-300 as reference:
maximum allowed passengers: 440
cabin size: 440
 
-Airbus A350-800:
maximum allowed passengers: 360
cabin size: 405
 
-Airbus A350-900:
maximum allowed passengers: 420
cabin size: 462
 
-Airbus A350-1000:
maximum allowed passengers: 450
cabin size: 541

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#6
Frdm920

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Mod Note: Thread Cleaned

ex

On topic, dzsoki I believe the current issue in regards to the way seating configurations work is also the lack of distinction between different types of F, C and Y seats used by airlines, for instance the "16F" in the Alaskan example you have shown is in reality equivalent to a business class seat rather than an actual long-haul first class, but as AE currently does not make this distinction (nor in fact takes into account differing pitches of seats at all) it results in situations where the RL config can't be replicated.


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#7
dzsoki

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Mod Note: Thread Cleaned

ex

On topic, dzsoki I believe the current issue in regards to the way seating configurations work is also the lack of distinction between different types of F, C and Y seats used by airlines, for instance the "16F" in the Alaskan example you have shown is in reality equivalent to a business class seat rather than an actual long-haul first class, but as AE currently does not make this distinction (nor in fact takes into account differing pitches of seats at all) it results in situations where the RL config can't be replicated.

I agree with that, in the real world much more different classes exist between the standard three, (business economy, premium economy, closed suites etc.) and it's quite hard to replicate all of them.


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#8
the DOC

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I agree with that, in the real world much more different classes exist between the standard three, (business economy, premium economy, closed suites etc.) and it's quite hard to replicate all of them.

They'll be coming in AE4.

#9
zipp

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With te seating layouts, having the FAA exit limit allows for realistic configs of those airlines that do not use te recommended configurations

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#10
Trogdor

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Perhaps being able to choose "Seat Pitch" as opposed to number seats when configuring would help (obviously with something telling you how many seats a certain pitch would give)

 

Agreed. Seat pitch would be much more useful, and give people a better idea of how pax are crammed into their planes (or not). To keep it simple, there could be a standard width configuration used for each class and for each plane, and players would adjust the pitch and be given a number of seats per class as a result.



#11
the DOC

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Agreed. Seat pitch would be much more useful, and give people a better idea of how pax are crammed into their planes (or not). To keep it simple, there could be a standard width configuration used for each class and for each plane, and players would adjust the pitch and be given a number of seats per class as a result.

Actually come to think of it I think this is on the list for AE4.... <_<



#12
dzsoki

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Here is a method of describing the actual cabin floor area on different long range aircrafts:

http://theaviationspecialist.com/master_lh_mission_dataset.gif

 

-Cabin floor area in square feet/meters

-Seating @ 1 PAX / square meters

 

Two examples:

-A340-600:

Cabin floor area: 3380 square feet

Seating @ 1 PAX / square meters: 315

 

-B777-300ER:

Cabin floor area: 3555 square feet

Seating @ 1 PAX / square meters: 330,4


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#13
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Here is a method of describing the actual cabin floor area on different long range aircrafts:

http://theaviationspecialist.com/master_lh_mission_dataset.gif

 

-Cabin floor area in square feet/meters

-Seating @ 1 PAX / square meters

 

Two examples:

-A340-600:

Cabin floor area: 3380 square feet

Seating @ 1 PAX / square meters: 315

 

-B777-300ER:

Cabin floor area: 3555 square feet

Seating @ 1 PAX / square meters: 330,4

But then again there are different size seats



#14
dzsoki

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But then again there are different size seats

 

We have the actual cabin floor area in the quoted parameter: Seating @ 1 PAX / square meters.

If we take this as a reference for example with 34" seat pitch, we can compare the different seat configurations to this.

 

-B777-300ER: Cabin floor area: 3555 square feet Seating @ 1 PAX / square meters: 330,4

If I configure 550Y it will be 67% (550/330,4) denser than our 34" reference. --> legroom parameter

If I configure 16F 40C 200Y it will be 29% (256/330,4) more spacious than our 34" reference.

 

-A340-600: Cabin floor area: 3380 square feet Seating @ 1 PAX / square meters: 315

If I configure 375Y it will be 19% denser than our 34" reference.

If I configure 16F 40C 200Y it will be 23% more spacious than our 34" reference.

 

The actual dimensions of the aircraft taken into account in this calculation, this is why the full Y config get better results for the A340 and the same three class seating is better for the 777-300ER.

 

Of course if we use different types of seat pitch not just 3-6 different classes with preconfigured values, it will make this much more sophisticated, as you have to know the dimensions of the seats etc. eetc.


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#15
Yuxi

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Actually come to think of it I think this is on the list for AE4.... <_<

 

Reminds me of an early concept I posted a while ago :P

 

airline-aircraft-subfleets.png



#16
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Reminds me of an early concept I posted a while ago :P

 

airline-aircraft-subfleets.png

DON'T TOY WITH ME :hmmph: <_< Looks real nice though and it pretty much solves most things raised in this topic



#17
dzsoki

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I like these demo pictures too. :)

I think the physical aircraft cabin sizes will be an interesting addition to the new version. As the fuel flow, speed, turn time, required runway lenght and other parameters currently have to be considered, the actual cabin size and the chosen seat configuration will be at least as important in the game, and also balances some aircraft types which I mentioned before.


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#18
Yuxi

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I like these demo pictures too. :)

I think the physical aircraft cabin sizes will be an interesting addition to the new version. As the fuel flow, speed, turn time, required runway lenght and other parameters currently have to be considered, the actual cabin size and the chosen seat configuration will be at least as important in the game, and also balances some aircraft types which I mentioned before.

 

Yep, the cabin width and lengths will be important for calculating seat pitch and such. Then we can use actual numbers to compare cabin layouts rather than a vague "legroom rating" of questionable accuracy (and not even differentiated per cabin). :P



#19
ar157

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With the use of seat pitch, would this not screw up reputation if you decide to use a reverse herringbone product for business class as seat pitch is something like 45" which sounds like utter crap on long haul when it actually isn't. I'm still in favour of just doing the maths and just enter the number of seats i want. With physical cabin sizes, this would be influenced by certain galley/lav configurations. 



#20
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With the use of seat pitch, would this not screw up reputation if you decide to use a reverse herringbone product for business class as seat pitch is something like 45" which sounds like utter crap on long haul when it actually isn't. I'm still in favour of just doing the maths and just enter the number of seats i want. With physical cabin sizes, this would be influenced by certain galley/lav configurations. 

I would just prefer the realism i.e. seat pitch and layout etc. but there is something to be said when just choosing the number of seats you need so that you end up with the right proportions or ratios because a bad ratio config really messes it up on AE






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